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DeathBlade556
09-10-2008, 02:21 PM
Well I'm bored so a new project, adding a electric motor to my bicycle I picked up a 2000lb winch from harbor freight on monday and I took it the machine shop at RMU yesterday before the baja meeting and ripped it apart, cleaned the brushes, drilled some vent hole, milled out the bottom and hooked up a tach to it. At 24volts I got some 3400rpm out of it I'm going to use a 10T sprocket on the motor and a 48T on the rear wheel for a 4.8:1 gear ratio
I'm going to mount the motor above the rear wheel and attach the 48T sprocket to the left side of the hub opposite of the normal gears.
like this
http://i151.photobucket.com/albums/s156/DeathBlade556/bike2.gif

27" rear wheel (cir 84.75")

3400 / 4.8 = 708rpm

708rpm * 84.75" = 60,003"

60003" / 12" = 5000.25"

5000.25 / 88 = 56.8mph

http://i151.photobucket.com/albums/s156/DeathBlade556/DSCF5479.jpg

http://i151.photobucket.com/albums/s156/DeathBlade556/DSCF5483.jpg

http://i151.photobucket.com/albums/s156/DeathBlade556/DSCF5486.jpg

Ragnorox
09-10-2008, 02:24 PM
your my hero

Muzikman
09-10-2008, 02:32 PM
Wait...no Paint CAD drawings yet?!?!?

Cebby
09-10-2008, 03:07 PM
Does it have a free spool function? What's the duty cycle on the winch motor?

sb406
09-10-2008, 04:21 PM
It'd be really bad ass if you set it up for regenerative braking.

92YJCBG
09-10-2008, 04:29 PM
is it going to be time travel capible?

jackb1
09-10-2008, 04:36 PM
is it going to be time travel capible?

Looks like it will only do about 57mph. That's a little short of the necessary 88mph for time travel. Duh

SirFuego
09-10-2008, 04:45 PM
A motorized bicycle!! You should patent that idea and make millions!

What are you doing with the pedals? It'd be sweet if they could be used to charge the battery. Are pedals going to still power the rear wheels if the motor takes a dump -- sorta like how an escalator still "works" even when it doesn't. Or are the pedals just going to be for bling?

I always get a big smile on my face when you start one of these threads.

jeepxj3
09-10-2008, 04:50 PM
A motorized bicycle!! You should patent that idea and make millions!

What are you doing with the pedals? It'd be sweet if they could be used to charge the battery. Are pedals going to still power the rear wheels if the motor takes a dump -- sorta like how an escalator still "works" even when it doesn't. Or are the pedals just going to be for bling?

I always get a big smile on my face when you start one of these threads.

Its been done before, its called a moped! Electric has also been done before, its called Bionx
http://www.greenspeed.us/bionx_motor_bike_kit.htm

Macabre
09-10-2008, 05:15 PM
sorta like how an escalator still "works" even when it doesn't.

http://www.comedycentral.com/videos/index.jhtml?videoId=41938&title=mitch-hedberg-wall-knocking

Man, I miss that guy.

r6cyclegal
09-10-2008, 05:24 PM
I have something like that. It's called an R6. :D

2002wranglerX
09-10-2008, 06:00 PM
Does it have a free spool function? What's the duty cycle on the winch motor?

huh, ya for pedaling that could be a problem if not.

DeathBlade556
09-10-2008, 07:29 PM
Well I'm mounting the 48T on the rear hub and I'm keeping the pedals so I can pedal when I need to. The rear gears will free spool when I'm usingthe motor so the pedals won't be turning(and ripping off my shins) like on my last protoype, the the motor will turn when I'm pedaling so if I can find or make the right controller I should have regen braking. Its just finding a circuit which can do PWM at 24V and 120amps.
As for the duty cycle its more of 'is it hot yet?' when I'm done adding the blower for cooling it will take a while longer before I get to 'is it hot yet?'

Bill
09-10-2008, 07:33 PM
I have one question...

Where the hell do you come up with this stuff?

BigDukeSix
09-10-2008, 08:41 PM
I think you should invent a velocipede that combines an internal combustion engine that powers a mobile platform with four wheels and steering. You could call it a "car".

DeathBlade556
09-15-2008, 01:12 PM
Since there was on electricity at RMU I went home and worked on some projects, the super paper shreader is coming along nicely, the windturbine v2 is in need of a good PM DC motor to use as a generator and the Ebike tried to kill me.

I had attached the sprockets to the motor(12T) and bike wheel(48T), then broke the chain and got it tentsioned. The psychotic vibrations that threated to fip the whole think though the air were manageable at 12volts then stupid me decided to wire in the other battery for 24volts. Bad idea. It seams that 1/8"x3/32" derailleur chain
cant stand the motor output at 24volts, 156amps x 24volts = 3744watts = 5.02HP

It ripped the chain off of the 48T sprocket and snapped the fix link I was using to hold it together, it got jammed on the 12T and it went flying around like some unholy weadwacker till the motor spooled down.

Note to self bicycle chain is not for power transmission.

I got a 9T #41 sprocket and chain on order from grainger and an 56T on the way from ebay. Lets see this thing break that.

DeathBlade556
09-18-2008, 12:32 PM
I got the 56T sprocket, it took forever to get it on straight. put the wheel back on and its way out of balance anybody got a way to balance a bicycle tire.

http://i151.photobucket.com/albums/s156/DeathBlade556/DSCF5500.jpg

Jpdst29
09-18-2008, 12:46 PM
i didnt even know there was a way to balance a bicycle tire. or that anybody did such a thing.

BAD_GNR
09-18-2008, 12:54 PM
anybody got a way to balance a bicycle tire.




Most people have it done professionally, but all you really need is a spoke wrench and a lot of patience. Just throw the wheel on the bike frame and spin it. Wherever it's rubbing you'll need to tighten or loosen 5-6 spokes depending on which side you need to pull the tire. Just keep adjusting them and spin the wheel to get an idea of your progress. Just make sure nothing gets over or under tightened. It takes a while.

JeepSteeler
09-18-2008, 01:10 PM
Why don't you try belt drive instead of fooling with the chains/sprocket?

Lord knows you already ripped both shins off, I'd hate to see that chain get ahold of you.

This might be the first thread of yours I've been able to follow *almost* the whole way (patting my back)...

abrzrkr
09-18-2008, 03:16 PM
Most people have it done professionally, but all you really need is a spoke wrench and a lot of patience. Just throw the wheel on the bike frame and spin it. Wherever it's rubbing you'll need to tighten or loosen 5-6 spokes depending on which side you need to pull the tire. Just keep adjusting them and spin the wheel to get an idea of your progress. Just make sure nothing gets over or under tightened. It takes a while.
That's how you would straighten the wheel. Now if you want to balance it I would start by taking off the reflector.

Backwoods Couple
09-18-2008, 03:18 PM
I think it's pretty. That's about all I can get from this.. Oh.. and slightly insane!

Diane

DeathBlade556
10-05-2008, 10:00 PM
Finally got to working on my bike project(have a wind turbine project going), I took the #41 chain and found my ebay sprocket is not #41 like the chinese claim but some kind of odd size I took it to the local bike shop its not metric chain, is not ANSI, its not bicycle, its some, 'we are china!, we have no quality control!, who cares that size the teeth are! its only going to spinning at high speed." size. But we found a BMX type chain fits it ~ok~ probably wont come flying off.
After that I took the 9T to the machine shop at RMU between classes friday. Turned it down to fitt the BMX chain.
Was bored after my OBA explosion so I fabbed up a crappy frame from some 3/4" angle and 1/2" tube.
One of the engineering professors is looking over my controller circuit I'm basing it around a 1200Volt 300amp IGBT.

http://i151.photobucket.com/albums/s156/DeathBlade556/DSCF5509.jpg

http://i151.photobucket.com/albums/s156/DeathBlade556/DSCF5521.jpg

http://i151.photobucket.com/albums/s156/DeathBlade556/pwm20.jpg

Bill
10-05-2008, 10:02 PM
but will it wheelie?

DeathBlade556
10-05-2008, 10:05 PM
It might, If I run it at the stock amperage of 140amps and at 24volts its should be 3360watts / 764 = 4.3HP if I take it up to 36volts :D thats 5040watts / 764 = 6.5hp!!

aquaholic
10-05-2008, 10:16 PM
i'd supercharge it

avenged7foldhc
10-05-2008, 11:45 PM
from what i understand, wont this go from 0-full power immediatley? which should result in some mega wheelies...

omg how cool would it be to see a vid of a guy on a electric pedal bike smoking tire... hint hint

DeathBlade556
10-06-2008, 08:54 AM
from what i understand, wont this go from 0-full power immediatley? which should result in some mega wheelies...

omg how cool would it be to see a vid of a guy on a electric pedal bike smoking tire... hint hint

No, thats what the Pulse Width Modulation ciruit is for it will limit the time the motor has full voltage to a millisecond or so at a each pulse allowing me to control the speed. More pulses the longer the motor is on, I just need to make a spring loaded varible resistor to use as a throttle.

avenged7foldhc
10-06-2008, 11:11 AM
ahh gotcha

wozz
10-06-2008, 07:28 PM
So I guess that the president of RIT built an electric bike. He rode it to baja's sponsor day and rumor has it he did a front wheel burnout.

Just some inspiration.

DeathBlade556
10-06-2008, 11:02 PM
Wait, that guy that rides around the free lot on that electric 1970s bike with the front hub motor did a burn out?

92YJCBG
10-06-2008, 11:16 PM
wow......

2002wranglerX
10-07-2008, 02:20 PM
so what batteries are you going to use for this? and what kind of life are you predicting?

DeathBlade556
10-07-2008, 06:51 PM
I was planning on using two 20ah AGM lead acids, should give me a couple hundred charge cycles.

DeathBlade556
10-08-2008, 11:51 AM
I made another controller circit, and gave it to dr.arif to give a once over. When I got home I made another mount for the motor since the last one broke

http://i151.photobucket.com/albums/s156/DeathBlade556/PWM35.jpg

2002wranglerX
10-08-2008, 01:22 PM
I was planning on using two 20ah AGM lead acids, should give me a couple hundred charge cycles.

man, aren't they heavy though?

DeathBlade556
10-08-2008, 03:17 PM
Their only like 15-20 pound each,

DeathBlade556
10-17-2008, 11:00 AM
Well I got the whole thing together! and flipped it for a motor test, and it spins that tire like there is no tomorrow!
So then I took it for a road test with some bigger batteries(a 15 and 20ah SLA in series for 24v) and they just cant give me the amps I need for full torque and hp.(140amps)
So I tested it with two group 30 deep cycles I put on a backpack frame it got me zipping round at 32mph at the max but I had 180lbs of batteries on my back and even with the cooling fan I installed on the motor, it was burning hot!! (gave me a nice blister when I touched it) I've given up on the winch motor, it just needs to many amps, I might rewind it to use for another project.

Here is the stationary test

http://www.youtube.com/watch?v=hlt7ZYcspSg

The road test with the winch motor

http://www.youtube.com/watch?v=m_DX0kPPsgk



So I've bought a Scott 1hp motor its huge compared to my winch motor, best part is it draws only 41amps instead of 140! I think I'll overvolt it with 36volts using some dewalt LiFeP04 36v batteries(I saw a good deal locally on craigslist for a tool kit from a business that went under and I could use a new drill)

I made a new controller diagram using a 556 one half controlls the frequency the other controls the pulse width, I think I have some 3k nested pots in my junk box, as I turn it up the frequency and pulse time with increase maybe it will help with motor noise.

MemorEsto
10-17-2008, 11:11 AM
You ran a stop sign

red6rubicon
10-17-2008, 11:31 AM
I was just waiting for the chain to break and cut your toes off!

jeepxj3
10-17-2008, 12:46 PM
awesome...

DeathBlade556
10-17-2008, 07:00 PM
The new motor, compared to a 4 gauge and a 12gauge shell

http://i151.photobucket.com/albums/s156/DeathBlade556/DSCF5532.jpg

old motor vs new motor
http://i151.photobucket.com/albums/s156/DeathBlade556/DSCF5537.jpg

2002wranglerX
10-30-2008, 11:02 AM
http://pittsburgh.craigslist.org/bik/898494594.html

DeathBlade556
12-05-2008, 10:31 AM
Well I've started working on it again I've decided to upgrade the battery to 4 half U1 12v 18ah AGMs for a 48v 18ah pack it will weigh 47 pounds :088: (this is going to be a heavy mountain bike) And since I'm doubling the voltage I'll double the motor RPM from 3000rpm to 6000rpm I've added another 9t sporket and a 20t freewheel for 2.222 plus the original 6.22 for a 13.82 ratio which will give me a max speed of 32mph. I've bought a YK42 controller and thumb throttle so just need to wait for the batteries to come in. Then I can start looking for a rolling frame for my e-dirtbike build. (anybody got a rolling chasis they dont need?)

http://i151.photobucket.com/albums/s156/DeathBlade556/DSCF5564.jpg

http://i151.photobucket.com/albums/s156/DeathBlade556/DSCF5569.jpg

And my next next idea an electric pedal ATV
http://i151.photobucket.com/albums/s156/DeathBlade556/equad1.gif

DeathBlade556
12-19-2008, 05:05 PM
Was at the machine shop at RMU today and had some free time so I make this 100 Amp / 200 Volt gauge for the bike, the green display is volts (200VDC) and the red is amps (100A)
http://i151.photobucket.com/albums/s156/DeathBlade556/DSCF5581.jpg

sb406
07-22-2009, 04:52 PM
Update?
WTF? I'm on the edge of my seat over here........

DeathBlade556
07-22-2009, 07:06 PM
I need to upgrade to a better bike, on the current one its too hard to ride fast over bumps without suspension.

The drive train of the motor I'm upgrading with a sturmey archer 3speed AW hub to give me 1.33, 1, then 0.75 gears. I'm calculating my stop speed in high gear being 37mph and low gear as being 17mph.

I got in 4 new gruber 1/2 U1 batteries 12volts @ 18amphours I'll use three for a 36volt back.

cjw94xk
07-23-2009, 12:07 AM
Considering the weight of the batteries I assume your not considering a full suspension?
I have a set of front Rock shoxs I would be more than happy to donate, well as long as I can to take it for a spin!

DeathBlade556
07-23-2009, 10:15 AM
My current bike has a 1" threaded tube, its just too old. Shifters are shot, freewheel cassette is worn out, brakes are going. Just need a new bike, looking at a 07 diamond back responce he wants 250 I'll see if I can talk it down to 200.

BAD_GNR
07-23-2009, 10:42 AM
I bet if you tell him what you're doing with it and show him this thread, he'd be more than willing to knock it down to $200. At least if he's a cool guy he will.

mrdylanr
09-08-2009, 12:57 AM
You still looking for a bike for this?

DeathBlade556
09-08-2009, 07:54 AM
Yep, still looking for new bike. Old one is completely shot up, I tried using the old bike for a full speed test. And bent the front rim to hell when the e-throttle got stuck at 100% and I did an unintended jump