Put chain on the left side of a bike?

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zzirrgrizz

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Hey everyone! So I am going to be putting a little B&S motor on my West Coast Chopper bike and so far it's going along great....but ......the engine shaft turns counter clockwise :mad: which means I am going to have add a sprocket and chain to the back tire on the LEFT side ): I am not sure what to do? Any suggestions?

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I added photos and on the far left picture is my current little cog that would be driven by the chain and pedals. In the middle picture is the sprocket I am going to put on there (however it's going to need to be on the other side since the chain won't be on the right side, obviously). And on the far right picture is what the left side of my wheel looks like (the side that need to put that big sprocket on) the little black lever sticking out is for the coaster brake on the bike.
 

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zzirrgrizz

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take off your rear wheel and flip it around to the other side and spin your motor around as well?

It would work and I have thought of that before but it won't because the hub has a coaster brake so if I flip it the chain would be activating the brake haha
 

itsid

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how about some PICS ??

So we get a better idea what we're dealing with here..

if there's enough room, you can run the chain to a jackshaft (left in) and from there (right out) to the wheel..

'sid
 

Joe-405

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Sid is about perfect on his post, some of those choppers actually came with a jack shaft from the dealer so he's probably right on and it's just missing or something. And pics would be perfect.
 

ML-TOYS

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If i read his posts correctly i think he is referring to a bike like this.

Not a chopper with a motor and jackshaft.
 

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mckutzy

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What is the size/power of the motor.
I'd say go with right side drive, butthat's kinda my style. Mind you, there will be the challenge of the tensioner, and how to mount a new sprocket for the new chain you will need?
 

zzirrgrizz

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What is the size/power of the motor.
I'd say go with right side drive, butthat's kinda my style.\?

The engine is only a 2hp B&S motor, but that's besides the point lol. I would like to have a right hand drive but unfortunately idk if I can because the shaft turns counter clockwise so if I put the shaft on the right side the bike would go backwards ):
 

mckutzy

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... Use a jack shaft... My build for example.
No, actually it does matter. The power is almost vitally important to know before a build commence, as that will dictate how the motor support will be made and over all the required strength.
Still you need to mount a sprocket to the rear tire, left or right side?
 

Poboy kartman

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... Use a jack shaft... My build for example.
No, actually it does matter. The power is almost vitally important to know before a build commence, as that will dictate how the motor support will be made and over all the required strength.
Still you need to mount a sprocket to the rear tire, left or right side?

That should be a a pretty much no brainer both ways....a 2 hp motor...shouldn't require more than a minimum mount....and if need be the wheel can be flipped.....(change sprocket? ??!!!)....
 

mckutzy

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The wheel drive sprocket is going to need to be changed as it wont be the same chain as the clutch( typically #35 or#40 chain). Its not like its going to just bolt on aswell and will it have room within the frame, Or will it (the frame) need to be modified.

As for the power, well now we know what were starting to deal with.
Need pics.
 

itsid

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the wheel drive sprocket is not an issue at all..

that very much looks like a BMX chain in there.. which as you might already know IS a #40 chain already ;)

'sid
 

mckutzy

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Is that so, actually I wasn't aware they were the same chain. I stand corrected.
Well the ratio will most likely need to be modified, so there still is a probable need for a jack shaft.
 

itsid

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a jackshaft is IMHO the easiest way of getting this done..

you can even install a second sprocket (freewheel) to the right side of the jackshaft and keep the pedals alive in case you run out of fuel ;)

'sid
 

zzirrgrizz

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The wheel drive sprocket is going to need to be changed as it wont be the same chain as the clutch( typically #35 or#40 chain). Its not like its going to just bolt on aswell and will it have room within the frame, Or will it (the frame) need to be modified.

As for the power, well now we know what were starting to deal with.
Need pics.

Just added pics
 

zzirrgrizz

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a jackshaft is IMHO the easiest way of getting this done..

you can even install a second sprocket (freewheel) to the right side of the jackshaft and keep the pedals alive in case you run out of fuel ;)

'sid

Just added pics to the original post btw
 
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