Wards/gilson jackshaft needed

capguncowboy

capguncowboy

Well-Known Member
#2
#2
Get a standard 14" 5/8" jackshaft and 1-3/8 x 5/8" bearings from OldMiniBikes. Trim down the jackshaft and throw on the sprockets you want to run and you'll be set.

They're pretty easy to set up
 
capguncowboy

capguncowboy

Well-Known Member
#4
#4
The stock Gilson jackshaft mounts are for 5/8, so i was just suggesting a replacement that would look correct and require little to no modifications
 
J

Jess2280

New Member
#8
#8
Do I need to run collars on each side to hold the shaft in place? Trying to order everything at once to save on shipping. Thanks for all the info. Truly helpful.
 
chipper

chipper

#9
#9
Jess2280 said:
Do I need to run collars on each side to hold the shaft in place? Trying to order everything at once to save on shipping. Thanks for all the info. Truly helpful.
Click to expand...
Yes you will need collars on each side , I drill a small divit in shaft for the set screws to sit in for a tight installation !
 
J

Jess2280

New Member
#10
#10
Thanks guys for all the help with the jack shaft. Almost done. What’s the best way that mount the rear sprocket ? Running the stock 2 piece wheels. 3. Bolt pattern. I know I will have to get a blank and drill the holes to match. Running a 48 tooth 41 chain based on the ratio I chose with help from another gilson builder on this site.
 
Dr. Shop Teacher

Dr. Shop Teacher

#11
#11
If you have the original sprocket, you can drill using the old one as a pattern--just make sure you center it well. I have been using 1" spacers (use threaded rod connectors) to properly set off of the Bosch wheels. Then, use a step drill and drill the sprocket center out to 1 3/8" (snug) and use a 5/8" ID flange bearing on the sprocket. This saves the wheel bolts from twisting and snapping the rim under high torque.
 
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