200x gearing

[3wheelieo]

So whats everybody got for gears on there 200x . Im thinking 13/36 is what im gonna run for flat track . Any input appreciated

[3wheelieo]

Anybody know whays stock at least

[Rob Canadian]

What year X?

I am running stock gear on my 1983. 12/40

[3wheelieo]

Thanks .well im building a 185s flat tracker with an x motor on it . If 12/40 is stock i may be able to pull 13 /34 gears no problem .motor is being stroked and big bored .

[RUNMEDOWN]

11/30 w/18" rear rubber. (Still on shelf waitng for final assembly, hope it works in real world, works in Math world)

[atc300r]

Where do you race flat track.Sounds like a cool build your doing.

[3wheelieo]

All private land trying to get more people involved and willing to participate

[atc300r]

Paradise speedway in Geneva ny has three wheeler classes.200 and open.

[3wheelieo]

Whoa first i heard of this now im even more pumped to get it done should have 250r front end on and my new rims and extended hubs by the end of week .

[atc300r]

We have a 6 race point series. We had # 4 race 6/18 next race for trikes is 8/24 then 9/3 .

[3wheelieo]

Well thanks for replys guys . Hope to race with you in september atc300r

[DohcBikes]

Very much depends on tire size. Gear ratios are calculated driven divided by drive. Stock gearing is 12/40. so 3.33:1. Numerically lower is a 'taller' gear, for example your proposed 13/36 is a 2.77:1 ratio. Stock rear tire size is 22", so if you are running shorter tires such as 18" for flat track, it will bring the final drive ratio back up numerically, resulting in 'shorter' or lower gearing overall. 13 is the largest front sprocket that will fit without contacting the case saver. I ran 14/35 gearing with 20" tires on my 229cc street trike and it would hit around 70mph with only 4 forward gears. Gearing is part of the race tuning process. It's easiest to have a few different front sprocket sizes to quickly change and evaluate.

[3wheelieo]

I totally agree just wanted a good base point with the rear and make changes with the front to tune.

[yaegerb]

I ran 13/36 with 16" hoosier cross blocks on my flat track bike. It would pull like a freight train for a 200x.

[3wheelieo]

Exactley what im running for rubber as well thank you