pedal cranks in the way of the motor

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R

rijopiatt

New Member
Dec 30, 2009
27
0
0
Indiana
I've got a 1940 Schwinn that I'm mounting a Starfire motor on. Someone told me that the front sprocket is not orignal, so maybe the crank is not either. Anyway, the cranks hit the engine on both sides. What are some solutions to this.

Thanks in advance.

Rick in Indiana
 
scotto-

scotto-

Custom 4-Stroke Bike Builder
Jun 3, 2010
6,505
24
38
Ridin' inSane Diego, CA.
Install a wider bottom bracket spindle.....something like this



You may need to get an adapter for that cartridge if your Schwinn has the large bottom bracket shell (which it prolly does), but they're pretty cheap.

dnut
 
FileStyle

FileStyle

New Member
May 27, 2008
719
7
0
Decatur,IL
I just completed a Felt MP build with a HQ Matic 4 stroke and had pedal clearance issues and had thought about using the wide adapter but opted instead to use shorter cranks
(5 1/2") from 6 1/2" long. I then went to bike store to p/u some 1.25" pedal extenders to get the pedals wider, out from under the motor.
 
P

Professor_Fate

New Member
May 11, 2011
20
0
0
H.B./O.C. Calif
Where can I get a 44t chainring that fits that bottom bracket in the post above? I already have some bent crank arms, but the gear that came with the cup and cone BB
is mounted with a pin and bolt. The BB in the pic above uses a keyway.
 
N

nvmextc

Member
Dec 10, 2010
30
0
6
Sydney
My mates bike had the same problem, the crank arms wouldn't clear the engine by a few mm's, so we jus grinded a small portion of metal off the crank arms.
 
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