Electric Bikes - Pegasus electric bike conversion kit thingie

How do you electric bike savvy good people feel about the following electric bike kit
http://www.pegasuspowersystems.com/id102.html ?

I can't find any reviews and I'm in a rush to get a motor for my bicycle and this one is tempting me over the BL-36 Wilderness model.

Side note: If you know of a better kit under $400 shipped to Eugene, Oregon, I'll give you an internet cookie if you tell me about it.

Thanks for your time :D

slcavos

I can't offer you much wisdom. But I do think Pegasus battery case, controller mount, rack look like something I would like. The fact that they make headlights powered from the propulsion battery is also a BIG plus.
I would certainly give them a look if I didn't already have an ebike.

Thanks for tipping us off to look there. Please let us know the results if you choose Pegasus.

Don

I hate to be the bearer of bad news, but I'd be more inclined to just get the motor and controller here http://www.electricrider.com/ as the first upgrade most people usually make after getting a kit is to replace the marginal lead acid (which usually doesn't last long, total life wise) battery pack, with a better NiMiH pack, and that necessitates a compatible charger too, so almost right away that's half the cost of your kit.

A nice top of the line battery can be found here...

http://www.batteryspace.com/index.asp?PageAction=VIEWCATS&Category=1272


Course, I know it gets pricey quick.

well,
price tells everthing.
my battery 36V10Ah alone cost me more.
my TF made-in USA cost 4000 dollars, but it is trouble -free for 13,500 km.
the best ebike kit E+ /Google it/ is over 2500dollars.
I don`t know why would people expect reliable mean of transport for less than 10 tanks of gasoline.
Pay at very minimum one year worth of gasoline - 12 times $70 is....
Do you want reliable or have your hands dirty every day with crap from China.
MC

slcavos
Please let us know the results if you choose Pegasus.

Will do!


bearer of bad news
I don't count that as bad news as it's stuff I want to hear. I was hoping I would eventually pick up a second battery for the bike. The Pegasus dealer place sells empty battery cases and judging by the dimensions of lead acid and NiMH listed at the link you posted I think I could fit the cells into the plastic case thing. But if the setup is **** I'll never need a second battery pack!


crap from China.
Good point.

Thanks for all the input. I'm presently waiting to hear back from someone I found who bought one on eBay.

stuff

almost forgot, you get half a cookie

I tracked down someone who bought one of these through ebay feedback and they had good things to say about it so I bought one and just installed it and it's awesome. I'm not a technical person in this field so I don't know what all to say about it as a review.

It took about three hours to install and it came with all the tools needed to install it. It is a lot more powerful than I expected, and it's faster than I want to go at full throttle. The battery case is 25 pounds but it pops on and off with the turn of a key which is great so I can remove it quickly to lift my bike onto public transit bike racks.

The brake levers kill the motor when you put any pressure on them. The wheel was true. Everything mounted up just fine. The light and horn are nice. It zooms right along.

If you ride your bike up and down stairs, on railroad ties, or heavy off road stuff, in my opinion the rack/battery mount is not strong enough. It's a bit wobbly when you jerk it around.

There are two key positions for "on" and one for "off" and I don't know what the difference between the two "on" positions is. Any ideas?

There are two gauges on top of the light and I'm going to guess one is for battery level but I have no idea what the other is. Any ideas?

It shipped UPS and the box weighed 61 pounds. It took 6 days to get here.

I had twist shifters but rarely used them so I'm not worried about them being slightly harder to use. The new brake levers are long enough that there is no extra reaching of fingers to grab the brake levers.
http://www.intldaveclub.org/public/electricbike1.jpghttp://www.intldaveclub.org/public/electricbike2.jpg
It is rain proof, by the way. The seller, the manufacturer and the manual it came with all say it will work in the rain and I could definitely see where they sealed parts to make them rain proof.

I'm very happy with it and I'm glad I won't have to eat so much anymore! People complain about the gas prices, but eating extra calories every day to fuel my bike adds up. I'm happy to answer any questions if I know the answers to them, or take extra pictures.

Do you want reliable or have your hands dirty every day with crap from China.


BTW, are there any ebike kits that are *not* from China? As someone that has spent many a day and night defending and securing computer systems from attacks that originated in that country, I'd like to make my personal purchasing dollars stand by my beliefs, aside from the quality issues. Unfortunately, I'm not aware of any ebike components made in the US or Canada. So, I'm currently looking at the ez kits, which from the way people talk have good customer support, and are quality products as far as these things go.

Hello,

I was wondering if how your experience has been after a year with the bike? I have been burned twice trying to get a working ebike, and I am hoping the third time would be a charm. Found your posting, when I was trying to see what people think of the pegasus kits. Thanks for starting the thread. I greatly appreciate if you can post any update/insight. For example, have you been able to use it in colder/hotter weather? Is the battery still going? Do you have to charge it continouslly and once/twice a day? Does it handle up hills well? etc.

Best,

A.

How do you electric bike savvy good people feel about the following electric bike kit
http://www.pegasuspowersystems.com/id102.html ?

I can't find any reviews and I'm in a rush to get a motor for my bicycle and this one is tempting me over the BL-36 Wilderness model.

Side note: If you know of a better kit under $400 shipped to Eugene, Oregon, I'll give you an internet cookie if you tell me about it.

Thanks for your time :D

You've been burned twice? I've had good experiences so far with my 2 ebikes. Nothing has broken so far. I'm careful with my bikes, though. I have a Forsen hub motor and a Crystalyte 5303 motor. Both run great.

You've been burned twice? I've had good experiences so far with my 2 ebikes. Nothing has broken so far. I'm careful with my bikes, though. I have a Forsen hub motor and a Crystalyte 5303 motor. Both run great.

Well, I guess I can easily be called an 'unlucky' one!?! :-(

It seems as I need something with a 500W motor that has enough tourque. I am hoping to be able to go around 20-25 miles per hour (so you don't get killed driving in the traffic), and it would be great if it could cover about twice that in distance, if necessary. I also realize that the range probably will diminish as the battery starting to die out. I still haven't figured out what kind of battery I need, as everyone says something different. With motors, there is also seems to be a large number out there. I also have considered whether to buy an already built ebike, but in any case I hope my third attempt is a 'home run' rather than a 'strike out'! :-)

The kits I have been looking at are:

Electric Bull or Green Hornet from Falconev

http://www.falconev.com/E-Bikes.html

Crystalyte 5304 or 408 from

http://www.electric-bikes.com/betterbikes/crystalyte.html

and the one I was asking about Pegasus Power 680

http://www.pegasuspowersystems.com/id102.html

It looks from reading lots of posting that the one everyone is very happy with is the Crystalyte one. I have emailed Pegasus to see if I can find out more about their motors. Two things that make it rather attractive are price - less than $500 including shipping, and the rather water proof set up they have. I do want to be able to drive it to public places, and be able to lock it up without worrying too much whether it would be there when I get back (have couple bikes stolen on me), or whether the rain would be a serious issue.

The first two option also leave me to find a decent battery, which does not cost an arm or leg. I was thinking of buying a ping battery, which doesn't seem to be cheap; but again is receiving good reviews from people.

Your post mentioned that you have a Forsen hub and an x5303. Would you mind telling me how/where you got them, and what kind of battery you are using? Have you managed to 'water -proof' it? Any other suggestion/comment would also be greatly appreciated.


Cheers.

I bought my Forsen hub from cycle9.com but I don't think they carry them anymore. It's a very good hub motor but not good for hills. It's made for speed. It's German made and seems to be a great motor. I put about 300 miles on it before I switched to my crystalyte 5303. The only reason I switched was because I wanted more torque and speed and well, the 5303 got so many great reviews. The crystalyte motors are very good but they aren't good in the rain. I never ride in the rain, though. The nine continent motors are good in the rain. If you want to go with a crystalyte and ride in the rain, there is a chemical called ACF-50 that you can put inside the motor that will prevent it from rusting. It might not rust but someone has had their crystalyte rust before but he kept his in a garage so I wonder how it would do inside a house that's dry and air conditioned. I keep mine in my house. The crystalyte motors will take more punishment than the nine continent but it's still very close on durability. The nine continent can handle quite a bit.

I got my 5303 from http://ebikes.ca . A 5303 with a 35 amp controller for $750. It's very well built. I've went off sidewalk curbs numerous times and even hit a very big pothole and never bent the rim or broke a spoke. No damage at all. I think they use a pretty heavy and thick rim...probably double walled but I'm no expert so I can't tell the difference but it's a very thick rim.

If you want torque, the Ezee motor is pretty good. Also good with hills. Max speed at 48v is 24 mph. Max speed is probably around 20 mph at 36v. Ebikes.ca has a good reputation.

I think you would do well with these brands of motors/controllers

ezee
nine continent
crystalyte

Ampedbikes.com uses a nine continent motor in their kits and I think e-bikekit.com also uses nine continent.

I recommend going through http://ebikes.ca if you want to buy the last ebike kit because they honor their warranties and if you have problems, they have a great reputation for fixing the problem very quickly. They also sell ebikes that actually work and have been well tested and they toss the stuff that doesn't work so you know that if you buy from them, it's going to be a good product.

As far as traffic goes, I was going 32 mph on a 30 mph road and I still had cars passing me.

As far as traffic goes, I was going 32 mph on a 30 mph road and I still had cars passing me.

True! On the way home (about 7KM/5M), I am biking mostly uphill which is sometime very steep. When you are taking that kind of path, and dropping speed can be even deadlier! :-)

Thanks for all the suggestions. I checked ebikes.ca. They seem to now only sell nine continent and Ezee motors now, although many of their info still is based on crystalyte! They have great prices on 2806 and 2807 models. Are these 400W-500W motors? Do you think is worth it to upgrade their 25A controller to a 40A one?
Their batteries also seems to be out of my range. I also cannot figure out how much Ah I need! Would 36V/48V, 8Ah run this motor for a decent range? Would I better off trying to buy a cheaper battery from ebay, etc? I know the danger with it, but I have read good things about ping batteries, and they seem to be cheaper (there are of course much cheaper LiFePO4 out there, but I guess you get what you pay for!)

I think you should go with a 25 amp controller because that allows you to buy almost any battery you want so you'll be able to shop around for a good battery rather than be limited to only High C rate discharge batteries (which are more expensive). You can still go wtih a 40 amp controller I guess but then you have to find a 2C battery that actually works well with a 40 amp discharge rate. And some of them that say 2C are not really 2C batteries. I have Thundersky that I use with my 35 amp controller and it just barely can handle it. I'd go with the 2806 Nine continent. Do they still sell the 2805 nine continent? That one really is built for speed. The 2806 is kind of mix between speed and hill climbing. I wouldn't go with the 2807. Either the 2806 or 2805 Nine continent. Or a crystalyte hub motor.

Ok, if you go with a 25 amp controller, for a battery, it depends on what you want. Do you mind how big the battery is? Do you want something really small? Those are questions you need to answer. I would not buy a battery off of ebay.

For batteries, if you go with 25 amp controller, you can get any of these:

pingbattery ...from pingbattery.com
Thundersky from elitepowersolutions.com (that's where I got mine...but they are a bit big but they are still good lithium batteries)
lithium batteries from hightekbikes.com
lithium and NIMH from ebikes.ca
cycle9.com has some lithium but usually more expensive
itselectric.ca has some but usually more expensive


If you want a small battery then Thundersky are probably not what you want. They are smaller and lighter than SLA because it's lifepo4 but they are prismatic cells and they are very user friendly but they are kind of bulky but are very safe. They have a vent at the top to prevent fires. They are probably the safest lithium battery on the market. You probably want to go with lifepo4 since it's pretty safe. Careful because there is a difference between LIPO or lithium polymer and LIFEPO4. I hear that LIPO has gotten safer though but lifepo4 is still safer than LIPO. LIPO gives higher C rate, though.

Pingbattery used to be a lot better. Some of his newer batteries have had some problems. Not sure why. The Thundersky's are better batteries in my opinion. People seem to be having a lot of trouble with the ping BMS's.

The thing is that a lot of those ebay batteries are factory rejects I think. I don't have proof but how are they providing these batteries for so cheap. I think pingbattery.com might be also using factory rejects but he probably is better on the inspection but lately, I think he's been letting some bad ones through.

Pingbattery used to be a lot better. Some of his newer batteries have had some problems. Not sure why. The Thundersky's are better batteries in my opinion. People seem to be having a lot of trouble with the ping BMS's.

The thing is that a lot of those ebay batteries are factory rejects I think. I don't have proof but how are they providing these batteries for so cheap. I think pingbattery.com might be also using factory rejects but he probably is better on the inspection but lately, I think he's been letting some bad ones through.

Following your suggestion, I will order the 2806 Nine Continent. It comes with plug-in Cycle Analyst, which I was planning to buy anyway. As you mentioned, they also have a 2 year warranty, and their shipping to me (or back to them) is really cheap (I am in Canada). I am also taking you advise of sticking with the 25A controller - I just want it to work and not get into a race!! :-)

The last decision I have to make is the battery. I am sticking with 36V, but have not decided to aim for 20Ah or 30Ah. Checked all the sites you had mentioned and more. Ping prices are the most reasonable for the buck (for LiFePO4); but your last post doesn't give them the highest marks. I actually considering using SLA batteries. They are heavier, have a shorter life span and discharge rate; but I can pick them from local stores here; and they are relatively inexpensive. I also came across a rather interesting solution:

http://www.youtube.com/watch?v=zKKvP9wWrlY&feature=fvw

Someone had used 36 volt Dewalt battery packs, which he claimed give him 20Ah. They are relatively cheap (Amazon selling them for $170 each). They are Li, and come with 1-2 year warranty. If it works, they are also very light.

I also currently have a 36V, 12Ah LiFePO4 battery (only used for a month). Not sure if it is the problem with the battery or the controller (even might be the motor itself); but after couple of weeks of working fine, it does cut out on me. I will try out with the NC 2806 kit to see if it is working. Talking to at least 3 different stores yesterday, including ebike.ca people, it seems as you can use almost any size Ah battery. It just may last shorter (or longer). Also, if your controller draws too much, and you have a low C battery; I guess the battery BMS will cut out the power. (I wonder if that is the case with my current 20Ah Cylte controller?)

Just one final, quick reply:

I just ordered the NC 2806 with their new LiMn 48V, 8Ah from ebike.ca. As you had also mentioned, they recommended that I stick to 25A controller with this battery. Bought a light kit with it, and cannot wait until it gets here. Hopefully my third try would be the charm!!?! :-)

Thanks again for taking the time, and answering all the questions and making great suggestions.

Cheers.



Pingbattery used to be a lot better. Some of his newer batteries have had some problems. Not sure why. The Thundersky's are better batteries in my opinion. People seem to be having a lot of trouble with the ping BMS's.

The thing is that a lot of those ebay batteries are factory rejects I think. I don't have proof but how are they providing these batteries for so cheap. I think pingbattery.com might be also using factory rejects but he probably is better on the inspection but lately, I think he's been letting some bad ones through.

The Dewalt batteries are actually A123 cells which are the best on the market for lithium. They aren't cheap at all by any means. They are actually the most expensive batteries you can buy. Lithium is measured by the Watt-hour or WH. Those dewalt 36v packs are 36v 2.5AH packs so you get about 36 x 2.5 = 90 wh which will give you about 3 or 4 miles range before it cuts out. So if you bought two of them, and you say they are about $150, that's $300 for about 6 - 8 mile range. That's horrible. If you can find new dewalt packs on ebay for $50, that'd be a pretty good buy. Whenever you look at lithium, measure how many watt-hours it has in the battery and that will tell you whether it's a good buy. My 36v20AH thundersky was $360 + $30 shipping so $390. I got 36 x 20 = 720 wh so 390/720 = about 55 cents per watt - hour.

I don't recommend SLA unless you think you just want to enjoy the e-bike for the summer and then it's not too bad. I think you should keep looking for a couple more weeks until your motor comes. Get a 2nd opinion on the pingbatteries. I personally don't think they are all that great but you are welcome to ask around and see what people think. Try endless-sphere.com forum . Someone just posted a ping problem today actually.
http://endless-sphere.com/forums/viewtopic.php?f=3&t=19682

about your current battery, yeah maybe that's what was happening. Hold off on buying a new battery because this new motor and controller might work fine with that battery. (nevermind, I just read your last post.)....yeah you can't go wrong with http://ebikes.ca ...I'm sure they'll hook you up with some good stuff. They got me a really nice motor and rim and controller. Been using it for a year now with no problems.

When looking at lithium, you want to keep in mind what it's C rating is and how many continous amps you'll be using. Your new controller is a 25 amp controller . So for example, if you bought a Thundersky battery which is rated at 2C and it's capacity is 20AH...then 20AH x 2C = 40 amps. So you can use any controller 40 amps or under and it won't hurt the battery. So you take the capacity x the C rating = .

So with your 25 amp controller, if you got a 10AH pack then you'd need one rated for about 2C or more. So a 15AH pack that's rated at 2C might be what is best for you as far as lifepo4 goes. Or just about any LIPO pack would work since those are all high C rate packs.

The Dewalt batteries are actually A123 cells which are the best on the market for lithium. They aren't cheap at all by any means. They are actually the most expensive batteries you can buy. Lithium is measured by the Watt-hour or WH. Those dewalt 36v packs are 36v 2.5AH packs so you get about 36 x 2.5 = 90 wh which will give you about 3 or 4 miles range before it cuts out. So if you bought two of them, and you say they are about $150, that's $300 for about 6 - 8 mile range. That's horrible. If you can find new dewalt packs on ebay for $50, that'd be a pretty good buy. Whenever you look at lithium, measure how many watt-hours it has in the battery and that will tell you whether it's a good buy. My 36v20AH thundersky was $360 + $30 shipping so $390. I got 36 x 20 = 720 wh so 390/720 = about 55 cents per watt - hour.

I don't recommend SLA unless you think you just want to enjoy the e-bike for the summer and then it's not too bad. I think you should keep looking for a couple more weeks until your motor comes. Get a 2nd opinion on the pingbatteries. I personally don't think they are all that great but you are welcome to ask around and see what people think. Try endless-sphere.com forum . Someone just posted a ping problem today actually.
http://endless-sphere.com/forums/viewtopic.php?f=3&t=19682

Thanks for the link. Similar, but not exactly the same problem as mine. For one thing, mine was only tested with one controller (the first one never worked). Mine worked for about a week or so. I peddle and only have a short distance each way to and from work (total of 10 miles). The way back in mostly uphill, so it really pushes the 250W motor, so I made sure to help it as much as I could. Then, similar to what was described in that post, I lost the power half way there. Turned the controller off and switched off the battery. It came back after a few minutes, but died again not long after. As I repeated this, it took longer and longer to come back on, and eventually I had to wait at least several hours to get it back. Last night, following a suggestion, I tried to drain it completely at home with no load, and with a gentle throttle to draw small amount of current. Died the same way. Left on over night, and in the morning wasn't coming back on as before. Waited until the afternoon - charged it back, it had gone from just over 43V to just under 40V. It came back on, but the same as before.

If there is any chance that I can use it; I will keep it. I can always use it when I want a longer range. Not sure if you can put them on series, being two different batteries, and different voltages; but if it is possible then it would be great.

I am selling it dirt cheap to someone on Thursday - he seems to know more about batteries and power. Is there any way I can check it (without opening up the package) to see if I should hold on to it?

about your current battery, yeah maybe that's what was happening. Hold off on buying a new battery because this new motor and controller might work fine with that battery. (nevermind, I just read your last post.)....yeah you can't go wrong with http://ebikes.ca ...I'm sure they'll hook you up with some good stuff. They got me a really nice motor and rim and controller. Been using it for a year now with no problems.

My fingers are crossed! :-)

When looking at lithium, you want to keep in mind what it's C rating is and how many continous amps you'll be using. Your new controller is a 25 amp controller . So for example, if you bought a Thundersky battery which is rated at 2C and it's capacity is 20AH...then 20AH x 2C = 40 amps. So you can use any controller 40 amps or under and it won't hurt the battery. So you take the capacity x the C rating = .

I look at Thundersky, and you were absolutely right - For the money was an excellent buy. Having said that and being very new at this, I thought the safest route is to simplify!? It seems as you need to do a bit more work, that is you have to either watch the balancer manually (which is probably better any way), or make it work with BMS.

The prices were also great at HighTekBikes, but almost all their batteries out of stock!

So with your 25 amp controller, if you got a 10AH pack then you'd need one rated for about 2C or more. So a 15AH pack that's rated at 2C might be what is best for you as far as lifepo4 goes. Or just about any LIPO pack would work since those are all high C rate packs.

I assume that if the battery has high C rate, and high AH, then the controller will just choke it off. Am I right?

I bought a 30 amp 24 volt ping battery in the spring of 2009. So far no problems and it seems to be as strong as ever.

I am selling it dirt cheap to someone on Thursday - he seems to know more about batteries and power. Is there any way I can check it (without opening up the package) to see if I should hold on to it?

I've never repaired a battery before but I don't think there is anything you can do that doesn't involve opening it up. It's probably the BMS that is causing the problem. If you wanted to check the battery, you'd have to open it up and take a volt meter and measure all the cells. The cells should all be above 2.5v if it's a lifepo4. And above 3.0v (I think) if it's LIPO. Your new battery should be fine if it was checked out by ebikes.ca and he said it would work.

If you had a 250 w bike before, you'll love this one that you are getting with a 48v battery. It'll probably go about 28 mph.

If you are curious, here is the crystalyte motors....http://crystalyte.com

I just looked at the battery that you said you got. Is this it? If so, that's awesome. Super convenient. You could just remove that and take it in places with you if you want because it looks pretty small.

http://ebikes.ca/store/photos/B4808LiM-EZ.jpg

ebikes.ca does still sell crystalyte motors but not in a complete kit. It's on this page.
http://ebikes.ca/store/store_motors.php

I bought a 30 amp 24 volt ping battery in the spring of 2009. So far no problems and it seems to be as strong as ever.

In any production line, there will be a few bad apples. What sold me on ebike.ca battery (which price wise is more expensive than pings) is that it comes with one year warranty which I like to think I can count on.

ebikes.ca does still sell crystalyte motors but not in a complete kit. It's on this page.
http://ebikes.ca/store/store_motors.php

Hmmm! I did miss it - I guess I thought that link was for hubs only, and I wasn't planning to put hub on the rim. I paid for the NC kit earlier today, but I doubt they have shipped it yet. Is it worth it to get them change the order? I suspect that the controller has to also change, and I wonder if the 48V, 8Ah battery would be big enough for it? By the way, it is the battery in your posting. I just wished it was a 10-12Ah to give me a bit more range.

You got a pretty awesome setup as it is. The nine continents are probably more efficient and probably faster than 400 series crystalytes anyway. They definitely have more torque. You'll get probably 28 mph out of the one you got with the 48v battery.

Sorry, didn't mean to make you 2nd guess what you purchased. If I had it to do over again, I probably would have gotten a nine continent too because it's just a lot more efficient and speed isn't really what you most e-bikers are looking for anyway. Past 28 mph, it gets really expensive to maintain that kind of speed. It's just not worth it on an e-bike unless you like spending lots of money.

I was just trying to make you aware of what else was out there. I apologize. The nine continent is probably faster than the crystalytes anyway so I wouldn't change the order. It's probably a lot easier to pedal the nine continent since the NCs are newer motors and are more efficient than the crystalytes. Basically, NC took what the crystalytes did and they improved upon the design by adding more magnets so the motor you are getting is a newer design and more efficient than the older crystalytes.

I was just trying to make you aware of what else was out there. I apologize. The nine continent is probably faster than the
crystalytes anyway so I wouldn't change the order. It's probably a lot easier to pedal the nine continent since the NCs are newer motors and are more efficient than the crystalytes. Basically, NC took what the crystalytes did and they improved upon the design by adding more magnets so the motor you are getting is a newer design and more efficient than the older crystalytes.

Your suggestions have been great and very well appreciated. In one of your earlier post, you suggested NC because it does better in rain (that is what ebike.ca also mentions on their web site). That is exactly what I need, since I would like to be able to ride the bike most of the year if I can. You are also dead on that it would be best for all of us to go more than 30-35 Kh. I personally wouldn't feel very safe going any faster, not to mention that at the moment I only have one working V-break on my bike!! One unfortunate thing about NC motors/wheels is that there is no room for other type of breaks (at least with the front wheel set up)

Quick couple of questions:

-Before replacing the current set up on my bike, I though of checking to see whether the problem was the battery/controller/motor! Would a 48V, 8A battery work with a Crystlyte 36V, 20A controller and a 250W motor?

-In an earlier post, you had also mentioned that if one goes with SLA batteries, then he should stick with using it in the summer. I was told by someone else that only leaving them outside in the cold can lead to freezing, etc. So, if one rides them to and from a warm place, they should do OK with the lower temp. Was he correct on that? The plan with all the parts I have left after this conversion, and assuming that my controller can work with an SLA pack of say 12Ah is to make a very cheap ebike; so that I can use it when I go to downtown and have to leave the bike outside.

Yeah, if you charge an SLA indoors and then go out in the cold and then bring the battery indoors with you, that should be fine. They probably wouldn't freeze as long as you were using them on your journey.

I think that 48v8AH Samsung battery that you are getting should be really nice for you. Looks small enough to just take off the bike and bring inside. I'd suggest making the controller also removeable so you can bring both inside with you. The battery only weighs about 6 lbs I think so it wouldn't be a big deal.

Yeah, you can hook up that 48v8AH battery to your old setup if you want and try to figure out what is going on. The 36v controller on your old setup should be able to handle 48v I think without blowing. They usually have a 60v limit on those controllers.

Yeah, I'm using two V-brakes as well on my bike. No way to put disc brakes on. I think there is some way of doing it. There might be some kits on ebikes.ca to do this. I think I saw some disc brake adapters on the website.

If you want to find out about that battery, you might ask over on endless-sphere.com forum. Lots of battery experts over there.

Yeah, if you charge an SLA indoors and then go out in the cold and then bring the battery indoors with you, that should be fine. They probably wouldn't freeze as long as you were using them on your journey.

I think that 48v8AH Samsung battery that you are getting should be really nice for you. Looks small enough to just take off the bike and bring inside. I'd suggest making the controller also removeable so you can bring both inside with you. The battery only weighs about 6 lbs I think so it wouldn't be a big deal.

Yeah, you can hook up that 48v8AH battery to your old setup if you want and try to figure out what is going on. The 36v controller on your old setup should be able to handle 48v I think without blowing. They usually have a 60v limit on those controllers.

Yeah, I'm using two V-brakes as well on my bike. No way to put disc brakes on. I think there is some way of doing it. There might be some kits on ebikes.ca to do this. I think I saw some disc brake adapters on the website.

I am planning to take out the battery, if the bike is (ever) tied up in a public place. Making the controller also removeable is also such an excellent idea; but is it possible with all the connections to the motor, etc.?

Great to hear that I can test my old set up with the new battery. The motor is only 250W. Should be I concern about that?

I saw the disc brake adapters a few day ago on one of the web site I was checking. The attached higher up on the fork (for the front week), and use the hole that is used to attached the fenders. If you can use the link, I will try to find it.

Oh, you are right, there are 2 or 3 connections to the motor from the controller. I was thinking of the other end, with the battery to controller. I was planning on doing this also. Still, all the connections just involve unplugging them so I think it's do-able.

In your case, the best thing to do might be to somehow put the controller on top of the battery and make it one single brick. Maybe put some foam liner between controller and battery. Or something that won't allow heat to penetrate because you don't want heat from the controller to get to the battery.

As far as the 250w motor goes, if you are going from 36v to 48v, I wouldn't worry about overheating the motor as long as you don't run it for too long. Most motors can handle quite a bit. I wouldn't run it all the time like that.

I'm not really experienced enough to tell you whether or not the 250 w motor can handle a 48v battery because I've only been e-biking for 2 years myself and only have experience with what I have. From what I know, I think the motor will be fine. It's not very common to hear about a motor overheating or being destroyed by upgrading to 48v. It's pretty uncommon. What is more sensitive is usually the controller.