As the top speed, as verified by GPS, is only 50mph or so, some of us are looking at trying a few mods to increase this.

One possiblility is changing the rear sprocket ratio. There is no free prize. Increasing the speed costs some torque, or acceleration,  However, it is a way to experiment without throwing too much cash at it, and it is reversable, easy to try, and so is worth a try.

The MC-95 reverse trike currently uses a 18 teeth front sprocket, and a 30 teeth rear sprocket 

This gives a ratio of 30/18= 1.67:1.  At 5500revs/min this gives 50.9mph.

So. if we alter either the front sprocket (more teeth)  or the rear sprocket (less teeth), we can increase the speed ( for a loss in torque/acceleration).

Trying the Front Sprocket Change

A 30/21 set of sprockets will give a ratio ot 1.44:1 which gives a speed of 60mph

Trying the Rear Sprocket Change

A 26/18 set of sprockets will give a ratio ot 1.44:1 which gives a speed of 60mph

The Chain is 530 size and will need to be a longer length, so add that to the list of parts.  It can be purchased cheaply but the length, ans also can be shortened if you decide to go back to the original sprockets, so it is not really wasted. 


Now, the tricky part is to find the sprockets! 

I'm still looking for a supplier of a 530/26T rear sprocket, with the standard foreign (metric) six hole spacing.  I'll probably end up getting it custom made, so if anyone knows a possible supplier of the actual 530/26T sprocket, ot a good custom supplier please let me know!

And watch this space for my progress.       If you never try it you'll never know!

Kevin