ratios

[chromedawg]

I converted my trike from belt to chain. because it was too high geared.

I am running 14 front and 43 back at 60 my speedo says 77, if i go 15 front will that correct enough or should i go 16. thank you.:83:

[Tosh Togo]

I converted my trike from belt to chain. because it was too high geared.

I am running 14 front and 43 back at 60 my speedo says 77, if i go 15 front will that correct enough or should i go 16. thank you.:83:

Where's the speedo driven from, the front wheel, or the rear?. If it's the one in back, you'd need a smaller CS sprocket, not a larger one. The solution is to make the engine spin faster & produce a higher speedo reading for a given wheel speed, and a larger front sprocket will make the speedo error even worse..... Using a 12t front sprocket isn't a good idea, so the answer is at the other end of the chain. :)

The 77 @ 60 means that the current gearing is off by ~28%: (77/60 = 1.2833), so 43 X 1.28 = 55.04.

A 55t rear with your current 14t front will be really close. (77/60) X (43/55) = 1.003, so the net result should be almost dead-nuts on. :happy:


PS- I hope you didn't get your speed calibration the expensive way.

http://www.corbisimages.com/images/572/2F62306D-AFE9-4A46-BE6B-5A42195D270D/42-20079900.jpg