General Cycling Discussion - Will this fit this? / Whats the fastest you ever been on a bike?

http://www.ebay.com/itm/48V-1000W-Front-Electric-Bicycle-Engine-Kit-Conversion-Scooter-Motor-EBike-26-/120910309221?pt=LH_DefaultDomain_0&hash=item1c26d0e765#ht_2979wt_1163

http://www.schwinnbikes.com/bikes/urban/2012-coffee-1-speed-14284#/specs

Its a little experiment i want to do. Its gonna cost me $800 and i want to make sure everything fits before i commit.


So does this Motor / Rim fit that bike? And if not can you point me to a bike that it will fit (Preferably with fenders)


**Just for fun

Whats the Fastest you ever been on a bike.

Me i believe it was about 28 MPH on a flat road chasing a car. Long story short.. the car got away... :(

About 60mph, downhill with a fierce tailwind, according to the not-too-happy motorcop who pulled me over.

hahaha

http://www.leftfootforward.org/images/2011/05/Jeremy-Clarkson-scummy-man.jpg

Id be scared to do 60 MPH on a bike.

About 60mph, downhill with a fierce tailwind, according to the not-too-happy motorcop who pulled me over.I'd love to get pulled over by a cop....maybe get a citation/warning to hang on the wall of my shop. That would rock.

I can generate 30mph on the flats, no wind.

Come to NYC. You'll get pulled over every other week.

So does any one know the answer to the question?

IDK, is it possible the guys over here will have the answer to your question?
http://www.bikeforums.net/forumdisplay.php/258-Electric-Bikes

Im already there. No responce about the tire size

You really don't want long reach caliper brakes if you intend to go really fast. Certainly not cheap single pivot long reach calipers.

Stuffstuff1, do you have a motorcycle license?

Stuffstuff1, do you have a motorcycle license?

About to get it. Why?

Come to NYC. You'll get pulled over every other week.

So does any one know the answer to the question?

A the electric kit comes with a 26 inch front wheel and motor. The bike has 700c wheels. I don't think it will work.

SO i need to look for a new bike..

On a short straight downhill on a tandem...56 mph

Single bike..........46

flat straight....34

On a mtn road with switchbacks 38.8. I hit 40 before I had the Garmin couple years back.

This is what 38 looks like on the mtn road and swithcbacks from my pov.:D

http://i98.photobucket.com/albums/l267/gulpxtreme/Ride%20info/gmrdescent.jpg


http://www.youtube.com/watch?v=B6jBSRAO4qY

This: http://www.ebay.com/itm/schwinn-mens-off-road-blue-mountain-bike-overstock-sale-/150802546552?pt=Mountain_Bikes&hash=item231c883f78#ht_500wt_1413

Or this: http://www.ebay.com/itm/Schwinn-High-Timber-26-Mens-Front-Suspension-ATB-Mountain-Bike-S4010A-/230784017807?pt=Mountain_Bikes&hash=item35bbcca58f#ht_4204wt_1396


Im worried about those diskbrakes.

I'd look for a decent rigid MTB. Wonder what effect the weight of the motor will have on the front fork & handling?

I think I've been to 120 on one or two occasions. I'd never do it except on a straight, perfectly dry road with minimal traffic, in a full face helmet, a leather jacket, and heavy gloves.

Now, if you want to know the fastest I've been on a bicycle, I'm pretty sure that I went above 40 mph a few times, and my GPS shows me hitting 46 mph once, but that one might be a GPS glitch. I'm generally too chicken to pedal downhill, on account of having no real body protection. The fastest I went on anything resembling a flat road (not that we have many of those here) was 35 mph with a fierce tailwind.

With regard to the electric motor, I recommend that you check the laws in your state. Here in California any bicycle with an electric motor is legally restricted to 20 mph. A 1000W motor would be a huge overkill. It would be capable of pulling you at 20 mph up a 10% grade.

About to get it. Why?

With a 1000w motor I'm guessing you'll need it.



I don't think there's any way to use that with disc brakes.
I would look for an older fully rigid steel mountain bike or a good quality cruiser. And make sure you use a strong rear wheel and that the spokes on the front wheel are properly tensioned.

50 mph downhill

A couple possibilities: http://www.amazon.com/gp/aw/d/B001DHLJ4U/ref=redir_mdp_mobile http://newyork.craigslist.org/brk/bik/2983005884.html

As far as I know 58mph was the fastest I went going down Tramway in Palm Springs California.

With a 1000w motor I'm guessing you'll need it.



I don't think there's any way to use that with disc brakes.
I would look for an older fully rigid steel mountain bike or a good quality cruiser. And make sure you use a strong rear wheel and that the spokes on the front wheel are properly tensioned.


Actually electric bikes are in a legal grey zone in NYC
The key is if i go 20MPH or faster really. But im kinda looking at it much like sports car owners do. I wont go that fast.. But i would like to have the ability too MUHAHAH... Any ways i need to commute about 12-16 a day miles so i wont go that fast. Or else i might not make it back haha



Last on the other site i was referred to it says that you can use disc brakes with a hub. A lot of time you just need to get the spacer. I dont know if i need it but im gonna get it any ways just incase and ill see when i put the bike together...


Also how much is the shipping on that bike on amazon?

Another question... How cast can a bike physically go before it starts to fall apart?

I checked the vpower.hk website and didn't see any reference to disc brake compatibility or a disc brake adapter.
http://www.vpower.hk/product.php?id=40
If you plan to use it with disc brakes you should probably email them and see what you will need and what issues there may be.


Also, I'll be very surprised if vehicle classification in NYC is based on current speed traveled and not on the speed the motor is able to propel the vehicle. You can use a cycle analyst to limit the speed.

I'd love to get pulled over by a cop....maybe get a citation/warning to hang on the wall of my shop. That would rock.

I can generate 30mph on the flats, no wind.

Local Cycling club had a Time Trial a couple of weeks ago. The one spot on the road that had a 40mph limit on it and the Police set up a speed trap. 6 competitors stopped and Charged with "Riding in an aggressive manner". It was noted that NO cars were stopped and locals have never seen a speed trap on this section of road before.

Bicycles are prone to so-called "speed wobble" above 40 mph, which is not exactly starting to fall apart but scary enough to make you slow down. The point of onset of speed wobble is highly variable depending on the bicycle and conditions.

The second biggest risk, with rim brakes, is tire overheating and exploding during braking. This is part of the reason why disk brakes are often used on tandems (two riders -> twice the energy to dissipate at any given speed). But if it can happen with a tandem, it can also happen with a single-person bike, just at a higher speed. I can't put a number on it but I imagine that braking from 50 mph to a full stop should get you pretty close.

Tire exploding.. Damn.. If you were able to maintain control would it hurt you?

My gps said I maxed at 32mph. I remember feeling that I was going faster than I was comfortable with. I'm a casual rider, and I knew that an emergency stop at that speed would have been bad news bears.

As the rim heats up the air in the tire expands. I assume that, most of the time, the tire would blow off the bead, same as over inflating. The loud bang may be frightening, but not DIRECTLY harmful. Having a weakened rim hit the pavement, with part of the tire to deflect it sideways, and the brake locking the rim up, seems likely to result in catastrophic wheel failure. If you're going less than 10mph when it happens (i.e. almost complete stop before) you might be ok; if it happens when you're still going 20+mph downhill I would expect it to hurt.

I've hit 53 on 3 of my 4 recumbents. Fastest I ever went on a road bike was 49, pedaling like mad. Same hill on my Baron lowracer was 51, and I'd stopped pedaling at 15 mph so that I could ride one-handed and shoot video with the free hand. On flat ground, I regularly hit 32-37 mph for the end-of-the-ride sign sprint, and I was officially clocked once at 39 mph.

edit: regarding blow-outs, I imagine the main culprit is the heat softening or melting the rubber, not the increased pressure from the heat. Discs don't cause catastrophic failures like that, but when they get too hot they start fading. It pretty much only happens with tandems, which is why they tend to have HUGE rotors. My Baron has dual-discs and I can brake hard going into a hairpin from 50 mph with complete confidence.

River Mountain Road is good for 40-50 MPH depending on which bike I'm on.

Bicycles are prone to so-called "speed wobble" above 40 mph, which is not exactly starting to fall apart but scary enough to make you slow down. The point of onset of speed wobble is highly variable depending on the bicycle and conditions.

The second biggest risk, with rim brakes, is tire overheating and exploding during braking. This is part of the reason why disk brakes are often used on tandems (two riders -> twice the energy to dissipate at any given speed). But if it can happen with a tandem, it can also happen with a single-person bike, just at a higher speed. I can't put a number on it but I imagine that braking from 50 mph to a full stop should get you pretty close.

I'm sorry but I have to disagree with this, at least to some degree.

First off not all bikes are prone to vibration at 40mph, only poorly designed bikes are. I have 4 bikes that I know of that went above 40mph and not one has ever vibrated; I had two other bikes I no longer own that went above 40 and never vibrated. Pro cyclists go above 40 a lot and never, or at least rarely experience vibration. I personally got up to 58 and never experienced any vibration.

Rim brakes will not cause tires to explode, this happens so rarely it's not even worth mentioning. There has been issues with tubulars and the glue going soft due to heat, and latex tubes can explode if the heat is too great, also carbon fiber wheels cannot disipate the heat as fast as aluminum and thus can either blow a tube due to heat or the rime will delaminate. But any aluminum rim having a tire using butyl tubes blow due to heat is a rarity. It could happen more frequently with a tandem or a heavly loaded touring bike but I never saw that happen in all the years I lived in So Calif and rode mountains on hot days. In fact the day I came down TramWay in Palmsprings Calif and did 58mph it was 105 degrees out and I had to stop for a light at the bottom. And again Pro riders race and train in mountains on hot days and do so without issues.

I was taught to stab brake a bike coming down steep descents, this means applying very hard braking pressure for about 5 seconds then releasing the brakes for about 10 seconds and repeat till you slow down to what ever speed you wanted to be at. Not sure if that works, I had some people say it does and others say it doesn't. I have a friend who is a truck driver and when I mentioned the braking thing I did in the mountains he replied it works on big trucks and couldn't see why it wouldn't work with bicycles. The idea is to get the friction off the rim just enough to allow air to cool the rim a bit before you reapply the brakes...it seems logical.

Theres thsi one time, when i broke the sound barrier. But I rather not brag about it.

Theres thsi one time, when i broke the sound barrier. But I rather not brag about it.

Please brag about it, I for one would like to hear about it! Did you go into a full aero tuck on your bike while being tossed out of an airplane to achieve that? Did the bike frame resonate funny? Did the bar tape rip off the bars? With the wheels spinning so fast did they gyroscope the bike into weird positions? And most importantly, do you have pictures of the bike after impact?

Theres thsi one time, when i broke the sound barrier. But I rather not brag about it.

I have experienced several sonic booms while riding after eating Indian food.

FWIW, I's usually a better deal to just buy a Pedal electric bike complete,
unless you have abundant time and Are a tinkerer that feels compelled.

Fastest?, the bike was accompanied, in a carton and I was in a Boeing 747,
going some where to take a pootle-slow bike tour ..

Just today, with a rack and panniers on my cross bike-

http://i.imgur.com/3NS2U.png

If you put a motor on a bicycle, then you are not allowed to brag about how fast you ride.

Never planned on bragging about it..

How ever how fast you go with out motor assitance but the motor there is something to brag about.

52mph was my fastest. Many moons ago. Nowadays I get up to about 45 and I'm wont to coast, but not tuck.

We frequently hit 30 to 35 mph with the tandem going down hill. Any faster and my stoker complains, and I start tapping the brakes. Rule: Never frighten your stoker.

We frequently hit 30 to 35 mph with the tandem going down hill. Any faster and my stoker complains, and I start tapping the brakes. Rule: Never frighten your stoker.

**Clear throat**

Rule: Trust your captain.

You need to train your stoker!

60+ down Taft Ave. in the 13760 on a road bike.
40+ down the McArthur causeway in Miami on my mtb.

Fastest on a bike for me, about 46.1 according to my cycle computer. This was feathering the brakes lightly and wind rushing past my ears so loud I couldn't hear anything else. 2008 Houston to Austin Ms150. Anyone who has ridden that ride knows exactly what point of the ride I am talking about. I was riding a 2005 Scott Speedster S-4(like the one in the link below), and never pedaled a single time until I hit the bottom and leveled out. I think that was the scariest (and most fun) 2-3 minute period I've ever spent on a bike. I am not even sure I could have pedaled fast enough to keep up with the gearing. It was a blast for sure!,,,,BD

It was on Bontrager Hardcase 700x23 tires. I would have NEVER let the bike get over 20-25 with anything less tire wise...

http://gallery.roadbikereview.com/data/roadbike/2/257202Speedster.jpg

52.8 mph on a short but wild whoop-de-doo somewhere in Pennsylvania.

50-51 sustained on a long, straight downhill with a tailwind in the Sierra Nevada.

There are local roads where it's easy to exceed 40 for a few moments.

I weigh about 125 lbs and ride a road bike, a single.

Just hit 42 this morning, coming down Long Hill road. Aptly named.

Fastest is slightly over 50, but regularly hit 40. I will say that the "whoosh" factor is not linear above 35.

http://www.ebay.com/itm/48V-1000W-Front-Electric-Bicycle-Engine-Kit-Conversion-Scooter-Motor-EBike-26-/120910309221?pt=LH_DefaultDomain_0&hash=item1c26d0e765#ht_2979wt_1163

http://www.schwinnbikes.com/bikes/urban/2012-coffee-1-speed-14284#/specs

Its a little experiment i want to do. Its gonna cost me $800 and i want to make sure everything fits before i commit.


So does this Motor / Rim fit that bike? And if not can you point me to a bike that it will fit (Preferably with fenders)


**Just for fun

Whats the Fastest you ever been on a bike.

Me i believe it was about 28 MPH on a flat road chasing a car. Long story short.. the car got away... :(


The bicycle kit is compatible with the bike .
Vpower.hk biycle kit is uncompatible with disc brake . We use brake lever .

If you have more questions, can contact us at : sosomum@gmail.com

The fastest I ever managed to get my MTB/road bike to go on a slight down hill grade (there are no really good descents around here that are safe) was 57km/h. At that speed on a bike with no protection except fingerless gloves and a helmet I didn't really enjoy the experience. The fastest I ever went on a motorcycle was about 70mph and the force of the wind at that speed on a cruiser is truely epic. I felt like a sail...

The bicycle kit is compatible with the bike .
Vpower.hk biycle kit is uncompatible with disc brake . We use brake lever .

If you have more questions, can contact us at : sosomum@gmail.com

haha you followed me here! I ordered a 1000W Motor from your ebay ad 6/09/12

i since gotten another bike with out disk breaks with 26" tires so i wouldnt have to make any arrangements.,

I'd love to get pulled over by a cop.

It's no special thrill. When part of my commute was Interstate 5 in San Diego, I got pulled over many times. I would explain the situation to the officer, promise that they would see a "Bicycles Must Exit" sign at the next offramp, they would follow me down, see the sign and pull back on the freeway as I went down the exit.

Oddly, not one officer stopped me in the afternoons when I went back up Interstate 5 in the opposite direction. They must have thought that the hill itself was punishment enough.

It was a fast hill, but not that fast.

But since I don't run a speedo, I have no idea what the fastest I've ever done is. Probably in the 40-50 range.