Electric shifter kits



bluegoatwoods

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#2
Nice!

But I'm not sure I really understand it. Is this an electric version of, say, a china girl with a shift kit? And does the motor mount in the same place as the china girl would?
 

Pablo

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#3
Nice!

But I'm not sure I really understand it. Is this an electric version of, say, a china girl with a shift kit? And does the motor mount in the same place as the china girl would?
Not sure I would compare the torque and reliability to China girl or anything much else with an IC engine, but yes click on the installation instructions link. Thanks!
 

jaguar

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#4
excellent idea! I think being able to shift will also save on battery power on long flat roads since you wouldnt have to give full power to go full speed.
I used to have a 48v electric bike with front hub motor so know a bit on the subject.
 

Pablo

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#5
This was one of our test mules. Different controller and mount system, but exact concept:


 

Pablo

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#6
excellent idea! I think being able to shift will also save on battery power on long flat roads since you wouldnt have to give full power to go full speed.
I used to have a 48v electric bike with front hub motor so know a bit on the subject.
When people go electric they mainly:

a) worry and fret and poop about the cost of the battery
b) become so thoroughly hooked they wonder why they didn't start earlier
c) ride their bikes a lot more, I mean a LOT more!
d) brag to people how quiet they are.
 

bluegoatwoods

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#7
I certainly do like the idea of running the drive through the derailleur and gears. I'll bet it's a great way to save battery power and share the load without becoming exhausted.

It looks like an idea with real potential.

Though I was impressed with the idea and engineering involved in doing the same thing with an IC engine, I've not regarded it as being particularly desirable or useful. (Though I don't mean to knock SBPs product. I'm impressed with what they do.) But in an electric application, where conserving power is much more necessary, this looks like a real range extender.

I'll be watching with interest.
 

Fabian

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#8
Will Sick Bike Parts do a hybrid system, where the engine can be used to recharge the battery and work in conjunction with the electric motor for boost power when doing heavy hauls?
 

Pablo

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#9
Will Sick Bike Parts do a hybrid system, where the engine can be used to recharge the battery and work in conjunction with the electric motor for boost power when doing heavy hauls?
Not in the foreseeable future. We have lots of thoughts like that, many ideas from you and other great customers. How commercially viable? Sometimes we never know. The heavy haul type of thing would be limited by customer base, but the hybrid part appeals to me big time. Electric around people and town, gas on the open road.
 

Fabian

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#10
the hybrid part appeals to me big time. Electric around people and town, gas on the open road.
I share the same sentiment because when travelling on bicycle trails it would be hugely advantageous to turn off the internal combustion engine and cruise along without upsetting any of the more uptight cyclists (the very people who will report you to the police for being an evil anti-social menace on the bicycle trail) and who frown on an internal combustion engine running in a bike.
By it's nature, electric operation attracts a lot less attention which is a good thing under these circumstances,

but,

when back on the road, it makes a lot of sense to run the engine at 100% duty cycle; pushing the bike forward as well as recharging the battery and with the added advantage of having boost power when electric operation and the internal combustion engine work in unison.
 

Frankenstein

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#11
So what are the recommended motors on your side and batteries now? You seem to have a 72 volt system available? What is the best format in frame or just rear rack mount? I saw some funny looking offset gears (dished so the center mount and teeth are offset) that might be used for fat bike wheels I think? I am trying to get my bearings on the feasibility of this, I saw a dolomite using an electric center but I may be dealing with a frame that uses closer to normal geometry for a bike but want to use a wheel that's already too large to fit in the rear dropout.
 

Pablo

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#12
Kit here: http://sickbikeparts.com/electric-shift-kits-e-products/

We don't sell batteries as they are commodity item. Expensive, yet no mark up for us. So best to buy direct.

Yes 36V-72+V systems best for DIY folks..

Like any bike mount power system, there are challenges and rewards. Electrics have the expense and weight of batteries but the motors are easy to mount and drive is already on the right side. They are essentially silent and the pollution is upstream. Range is not as huge of factor for most, theft can be a real problem is some areas. Fun and challenging.
 

Frankenstein

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#13
Kit here: http://sickbikeparts.com/electric-shift-kits-e-products/

We don't sell batteries as they are commodity item. Expensive, yet no mark up for us. So best to buy direct.

Yes 36V-72+V systems best for DIY folks..

Like any bike mount power system, there are challenges and rewards. Electrics have the expense and weight of batteries but the motors are easy to mount and drive is already on the right side. They are essentially silent and the pollution is upstream. Range is not as huge of factor for most, theft can be a real problem is some areas. Fun and challenging.
So do you know anything about those dished gears and their geometry? Theft shouldn't be a major issue, while I lock even normal bicycles down I am going to get a Sherlock device for tracking purposes should it ever get lifted.. The real question is do I follow them home myself and kill them or just let the police take all the fun out of it.
 

bakaneko

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#17
Is there a youtube video of the electric bike shift kit in action?! plenty for the gas bikes seems none for electric =(
 

Pablo

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#18
Is there a youtube video of the electric bike shift kit in action?! plenty for the gas bikes seems none for electric =(
No, we don't have any. I am not a videographer unfortunately. If anyone has any vids, Youtube, I can post. We actually lost our original Youtube channel way back in a Google tussle with our original ISP.
 
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#19
Is there room on the shaft on your jackshaft kit to put another sprocket?
If we rack mount the electric motor behind us to tie into your normal shift kit then we could use the electric as a bumb motor/generator. Would it only take buying the longer shaft, and mounting a extra sprocket say 14 tooth for a #25 chain? It's something many people want, I imagine a 250 watt to 500 watt either wind generator or scooter motor would be plenty enough for most people in conjunction with gas engine without robbing all our power. I'm not worried about going 40 miles an hour on a bike but I am wanting to be able to travel under electric or gas and be able to charge. Think SBP would get to sell charge controllers also along with motor controllers. All the electric tech and ICE motor tech is there it's the hardware we need.. from what I read on this website is you are the best when it comes to shift kits. I can't pull the trigger on one if I cant simply add one more sprocket for another chain into the combo.
1541754648486507751482739861541.jpg

Very rough drawing not an artist

Would be best if the gas sprocket could be 'clutched' to not spin if put in a neurtal state to save our china girl engines' clutch.
Sorry so long winded.
 
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