Any Fat Tired Harley Trike Conversion Gear info?

[funkj62]

I run a 295/50-15, 12.5" wide /26.5" tall rear tire. Considering going to a 15" wide tire but that puts me into a 30" plus tall tire and out of reach for my stock gearing of 32 front/70 rear pulley. My present Frankenstine rear won't allow for a taller rear pulley. .y option would be for a front pulley change.

Anyone have a gearing chart for a front pulley that would put me back in stock gearing range, done some gearing math but not real sure I am correct
?

 

[Gorilla]

This is a good one. Anyone have the chart?

 

[funkj62]

This is a good one. Anyone have the chart?

Unfortunately, I think I'm gonna have to do the math. When I do.i will post the results for others to veiw. In reality, it prolly just a few teeth, the belt length to stay in adjustment might be the bigger challenge.

 

[ROAD DOG]

What is the diameter of the stock rear 2 wheel tire? what is the diameter of the tires your putting on ? Diameter not height. Get a thin 1/4 " wide tape measure go around the tire, that's how we measure for stagger on race car tires

 

[funkj62]

What is the diameter of the stock rear 2 wheel tire? what is the diameter of the tires your putting on ? Diameter not height. Get a thin 1/4 " wide tape measure go around the tire, that's how we measure for stagger on race car tires

The stock 200/55vr-17 tire is 25.9" and my 295's are 26.5" so not much diff. Frankenstine told me they had complaints with 1st gear starts on 295's and only use a 265/50 and 215/60( not sure but thinking both are in the 25" tall range)

I don't remotely have any problem with 1st gear starts and extremely happy, however, my tw-44 tourq cam upgrade might possibly help overcome that problem they talk of that I don't experience.

playing with the gearing/mph calculator providing my math is correct, comes up with for every 2" of tire height equals 1 less tooth on the front pully/driver meaning one plus tooth on the rear pulley.

As already mentioned I don't think.my 30" hotrod frankenstine will accommodate a larger pulley, it's pretty tight with the present stock 70 so I'm forced to do a front pulley change if I decide on larger/taller tire.

 

[ROAD DOG]

If you go on tire rack they a tire size chart you can put in the tire size, you can compare different tire it shows the diameter, how many rpms you will turn versus another tire ? you can change the front engine sprocket ? I went on tire rack a 275/50/15 is 25.9, revs per mile are 803 the 295/50/15 26.5, revs per mile are 784 check it out