Shovelhead Rear Sprocket Size?

[Richard D]

I am building a custom trike with a Harley Shovelhead engine and four speed trans. Chain Drive. I have a 23 tooth trans sprocket, what do you guys recommend for the axle sprocket? 26" tires. This will be mostly just ridden around town, rarely if ever on the freeway.

 

[Jack Klarich]

Chain or belt? The stock HD 4 speed leaves a lot of gearing choices left on the table, however changing the rear sprocket can improve some of this

You need to check to see if a chain or belt will be available also for whatever sprockets/ pulleys you use

32 tranny sprocket/ pulley and 70 wheel is a good combo for most trikes, but again your tranny gearing is going to be in play as well as your primary gearing

 

[Richard D]

Chain drive.

 

[Jack Klarich]

Have a look here at the calculator

https://www.mulliemotors.com/indexmotors.php?page=driveratios

 

[Richard D]

That's a pretty handy calculator for figuring chain length and the final drive ratio. I am guessing lower numerical is good for the highway, higher numerical is better for off the line power.

 

[Jack Klarich]

That's a pretty handy calculator for figuring chain length and the final drive ratio. I am guessing lower numerical is good for the highway, higher numerical is better for off the line power.

Yes

 

[Servi]

Don't forget the extra weight.

 

[Richard D]

I ordered a 48 tooth sprocket from Rebel Gears.