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Search: Posts Made By: simplecj
Showing results 1 to 40 of 40
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Forum: Electric Bikes
03-24-09, 08:30 PM
Replies: 84
Views: 5,736
Posted By simplecj

Here's my efficiency ratings as of 3-24

Here's my efficiency ratings as of 3-24
Forum: Singlespeed & Fixed Gear
02-13-09, 05:45 PM
Replies: 1
Views: 335
Posted By simplecj

With the 22T gear I have a top speed around...

With the 22T gear I have a top speed around 25mph. I calculated that a 27T gear would give me 20mph max speed, so I don't think my 24T is going to be enough... although if it means another $80, I...
Forum: Singlespeed & Fixed Gear
02-13-09, 05:43 PM
Replies: 1
Views: 335
Posted By simplecj

Anyone know where I can get a keyed 25 to 27 tooth sprocket??

I am doing an electric conversion on my fixed gear trike. I've added a 3 speed hub and need to gear down just a bit at my rear axle. I have looked all over the place and I can't seem to find any...
Forum: Electric Bikes
02-11-09, 01:32 PM
Replies: 84
Views: 5,736
Posted By simplecj

SOOO>.... Today I put the rest of the doo-dads on...

SOOO>.... Today I put the rest of the doo-dads on the bike!

I installed the shifter for the hub, the cycle analyst, and the connector and mount for the battery compartment.

Runs excellent with...
Forum: Electric Bikes
02-10-09, 12:45 PM
Replies: 84
Views: 5,736
Posted By simplecj

Update: I've got all my battery packs...

Update:

I've got all my battery packs assembled.

The removable trunk/battery storage is pretty much done.

I also got the motor mounted with the chain, extended peddle crank and Nexus 3...
Forum: Electric Bikes
01-12-09, 10:52 AM
Replies: 84
Views: 5,736
Posted By simplecj

I'm not using a hub motor anymore. Look at my...

I'm not using a hub motor anymore. Look at my post, I purchased a 500W Cyclone motor kit. Rated peak efficiency near 90% while most hubs are topping out around 80%, the motor comes with a 9:1...
Forum: Electric Bikes
01-10-09, 03:21 PM
Replies: 84
Views: 5,736
Posted By simplecj

Update!!

Ok, so I got a bunch of stuff now...

I bought a 10A iCharger with graphing capabilities through a USB connection. Tested every single cell I had and grouped into groups of 8 cells with similar...
Forum: Electric Bikes
12-16-08, 11:09 AM
Replies: 84
Views: 5,736
Posted By simplecj

Thanks... I actually think I'm going to mount the...

Thanks... I actually think I'm going to mount the motor at the rear with a freewheel sprocket on the axle next to the peddle driven sprocket. I'm working on modeling the bike in inventor to design...
Forum: Electric Bikes
12-14-08, 10:44 AM
Replies: 84
Views: 5,736
Posted By simplecj

OK!!! SO, I got the bike together and now.. well...

OK!!! SO, I got the bike together and now.. well to say the least, my project has taken a radical new direction!

After assembling the trike, I rode it around the yard. I have to say that the...
Forum: Electric Bikes
12-13-08, 02:41 PM
Replies: 84
Views: 5,736
Posted By simplecj

Here's a pic of my 10 cell charging rack hooked...

Here's a pic of my 10 cell charging rack hooked up to my hobby charger. Two or three similar units would be enough to properly charge my pack. They only do up to 6 series packs, but they can do it...
Forum: Electric Bikes
12-13-08, 01:55 PM
Replies: 84
Views: 5,736
Posted By simplecj

Just went and picked up the trike!!! :thumb:...

Just went and picked up the trike!!! :thumb: It's a lot lighter than I expected. Other than a bit awkward, the box wasn't too heavy to handle by myself.

That's one of the reasons I think this...
Forum: Electric Bikes
12-13-08, 10:28 AM
Replies: 84
Views: 5,736
Posted By simplecj

Um... ok James... I think I like the idea of a...

Um... ok James... I think I like the idea of a second chain better than a glued on pedal. I don't think they make freewheel bearings for the pedal sprockets. And glue... haha very funny. :lol:

I...
Forum: Electric Bikes
12-12-08, 07:46 PM
Replies: 84
Views: 5,736
Posted By simplecj

My hobby charger does a fast charge CCCV, it just...

My hobby charger does a fast charge CCCV, it just reduces the CV time by about half, but you're right. That first 90% is the fastest and may be all you need in the "need a charge quick" situation. ...
Forum: Electric Bikes
12-12-08, 12:46 AM
Replies: 84
Views: 5,736
Posted By simplecj

The upside to your rear wheel design is that you...

The upside to your rear wheel design is that you can tilt the wheels in to improve stability, especially if you can hit speeds of 36mph! But you're only driving a single rear wheel, does that effect...
Forum: Electric Bikes
12-11-08, 10:53 PM
Replies: 84
Views: 5,736
Posted By simplecj

You know what would look sweet on there... a good...

You know what would look sweet on there... a good motorcycle trunk! They run between $100 and $200 on ebay. That's what I'm thinking of putting on mine. That way it looks nice, you can lock it,...
Forum: Electric Bikes
12-11-08, 10:31 PM
Replies: 84
Views: 5,736
Posted By simplecj

Wow... you're overcharging your cells a bit! ...

Wow... you're overcharging your cells a bit! Your peak charge on those cells should not exceed 3.6v or 57.6V for your case. That's why you have the higher resting voltage. These cells are pretty...
Forum: Electric Bikes
12-11-08, 07:45 PM
Replies: 84
Views: 5,736
Posted By simplecj

Full voltage on 4 in series, would be 13.2v,...

Full voltage on 4 in series, would be 13.2v, 14.4v peak charge level (you said 15.4v?)

So with a 48v configuration, you'd actually be at a nominal voltage of 52.8V (16 cells in series or four of...
Forum: Electric Bikes
12-11-08, 05:00 PM
Replies: 84
Views: 5,736
Posted By simplecj

To those of you who have posted links to other...

To those of you who have posted links to other resources... I have been in finals week and too busy to do much research and with the holidays coming up I may be slow to respond.

Thank you for...
Forum: Electric Bikes
12-11-08, 04:51 PM
Replies: 84
Views: 5,736
Posted By simplecj

Um, SeizeTech... again, you are another person...

Um, SeizeTech... again, you are another person who hasn't read the whole thread and doesn't realize that I'm not talking about just any lithium cells.

I have A123 M1 cells that CAN take way more...
Forum: Electric Bikes
12-09-08, 01:38 PM
Replies: 84
Views: 5,736
Posted By simplecj

By BS you mean....? Bachelors of Science right? ...

By BS you mean....? Bachelors of Science right? ;) I try not to indulge too much in the other meaning of it, but hey, I guess sometimes it happens huh?

I'll check it out and post a reformulated...
Forum: Electric Bikes
12-09-08, 12:40 PM
Replies: 84
Views: 5,736
Posted By simplecj

The saddest part is that I am really interested...

The saddest part is that I am really interested in electronics and alternative energies, but quite honestly I feel that our program failed us in properly teaching electronics in favor of cramming...
Forum: Electric Bikes
12-09-08, 12:13 PM
Replies: 84
Views: 5,736
Posted By simplecj

Papa: What exactly are you pointing at? The...

Papa: What exactly are you pointing at? The eBike forum @ endless sphere??

James: We got the cells used from a hybrid company in Colorado. They had used them in some experimental packs used...
Forum: Electric Bikes
12-09-08, 02:55 AM
Replies: 84
Views: 5,736
Posted By simplecj

So what... how fast do you think is safe on a...

So what... how fast do you think is safe on a trike like this? I'm sure they're geared to go at least 10mph without much effort and no electric assist.

What about the 4011 Crystalyte motor? It...
Forum: Electric Bikes
12-09-08, 01:11 AM
Replies: 84
Views: 5,736
Posted By simplecj

Well, I personally don't think 20 is really that...

Well, I personally don't think 20 is really that fast. It feels like crawling in a car and I know I get going faster than that on my mountain bike with no problem. Yes obviously you would need to...
Forum: Electric Bikes
12-08-08, 02:02 AM
Replies: 84
Views: 5,736
Posted By simplecj

... I really need to look at the bike, wish it...

... I really need to look at the bike, wish it would get here already. I'm now rethinking my approach.

I was looking around and the only solar charge controller that will do 36v is either $75...
Forum: Electric Bikes
12-07-08, 11:44 PM
Replies: 84
Views: 5,736
Posted By simplecj

Probably one of the trickiest parts of this...

Probably one of the trickiest parts of this project is going to be building the trunk. I'm thinking of doing it out of composite fiberglass. That way I can have a big trunk without it weighing too...
Forum: Electric Bikes
12-07-08, 11:12 PM
Replies: 84
Views: 5,736
Posted By simplecj

I don't want to purchase a 50W system for my bike...

I don't want to purchase a 50W system for my bike just to have it sit at home.

I think you're missing my point, I don't care if the panels put out much power. I certainly don't expect them to...
Forum: Electric Bikes
12-07-08, 10:30 PM
Replies: 84
Views: 5,736
Posted By simplecj

What fiasco? The only difference in this system...

What fiasco? The only difference in this system with or without a solar system is the panels and a panel charge controller.

Again.. even if my system isn't the most efficient, any solar is...
Forum: Electric Bikes
12-07-08, 02:20 PM
Replies: 84
Views: 5,736
Posted By simplecj

Hmm... damn, you may be right.. but really, those...

Hmm... damn, you may be right.. but really, those tiny 12v panels are not heavy at all and they would be laid flat on the top of the trunk and not adding to drag, and drag really isn't a huge factor...
Forum: Electric Bikes
12-07-08, 02:13 PM
Replies: 84
Views: 5,736
Posted By simplecj

Okay... The weight of the 5305 is 24 pounds...

Okay... The weight of the 5305 is 24 pounds including the rim and spokes.

The eZee motor itself weighs 8 pounds, maybe 10 pounds with the rim and spokes?

So I guess I was wrong about the 20%...
Forum: Electric Bikes
12-07-08, 12:53 PM
Replies: 84
Views: 5,736
Posted By simplecj

Well, the eZee is only 20% lighter than the...

Well, the eZee is only 20% lighter than the Crystalyte hub, and I can limit the amps to 20A on the Crystalyte with only 16% less torque off the line. According to the simulator, almost everything...
Forum: Electric Bikes
12-07-08, 12:27 PM
Replies: 84
Views: 5,736
Posted By simplecj

I know that, that's why I'm getting the front...

I know that, that's why I'm getting the front wheel hub. It'll actually make it a 3 wheel drive with both electric and pedal power!

What I'm really hoping is that I can rig up a disc brake on the...
Forum: Electric Bikes
12-07-08, 10:41 AM
Replies: 84
Views: 5,736
Posted By simplecj

As for the motor selection... I'd rather have...

As for the motor selection... I'd rather have more flexibility in my system and the ability to handle more power if I want it to, especially if it's not going to cost me any more money, which it...
Forum: Electric Bikes
12-07-08, 12:16 AM
Replies: 84
Views: 5,736
Posted By simplecj

I don't know... I compared the eZee to the 5305...

I don't know... I compared the eZee to the 5305 hub with a 36V 20A system and really there isn't much difference. The eZee has a few more pounds thrust off the line (42 vs 35), but the 5305 has a...
Forum: Electric Bikes
12-06-08, 05:45 PM
Replies: 84
Views: 5,736
Posted By simplecj

Ok... now I'm looking at the eZee again and I'm...

Ok... now I'm looking at the eZee again and I'm thinking that really would be a better choice. I just wish it was a bit cheaper... I've sent an email to their sales department to see if I can get...
Forum: Electric Bikes
12-06-08, 04:33 PM
Replies: 84
Views: 5,736
Posted By simplecj

Tourezrick: Well, some LiFe batteries might not...

Tourezrick: Well, some LiFe batteries might not be able to supply the current, but the ones I have certainly can produce more than enough amps for even the most powerful motor systems.

These...
Forum: Electric Bikes
12-06-08, 10:43 AM
Replies: 84
Views: 5,736
Posted By simplecj

I also have another question... With this higher...

I also have another question... With this higher power system (~1400W), will I get a noticeable decrease in range over using a smaller 600W system? Or does the higher power cancel out in range...
Forum: Electric Bikes
12-06-08, 09:35 AM
Replies: 84
Views: 5,736
Posted By simplecj

First, thank you for your replies they have been...

First, thank you for your replies they have been very helpful. :)

I looked at the eZee motor, while it does give excellent torque (about 60 lbs thrust off the line), with a 36v system my max speed...
Forum: Electric Bikes
12-05-08, 06:46 PM
Replies: 84
Views: 5,736
Posted By simplecj

Ok, I figured hubs would win, but I'm having...

Ok, I figured hubs would win, but I'm having problems finding any stats on them and it seems a lot of suppliers are sold out right now. And they all want you to buy the full kit. All I really need...
Forum: Electric Bikes
12-05-08, 06:16 PM
Replies: 84
Views: 5,736
Posted By simplecj

Cool Engineering student needs suggestions: Solar-Electric Trike!

Hi, I'm a senior engineering student and I've chosen to build an electric-solar bike for my senior project. :thumb:

So far I have a brand new Schwinn Meridian adult tricylce and about 66 A123 LiFe...
Showing results 1 to 40 of 40


 
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