Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Project 100 (custom enclosed Honda C90 targets 100 mph vmax and 100 km/L FE)

Ironside · 08-13-2013, 06:53 PM

Thanks for the reply Visionary, I didn't want to highjack your thread, a brief description follows :-
1981 Honda 90zz, basically standard frame, forks and wheels. The original 90cc motor was replaced with a Honda 125 4 speed motor after the original motor seized (3 times). This was probably due to over revving because of the decreased wind resistance and standard gearing.
The new motor came out of an ATC 3 wheeler farm bike and fitted straight in. It has a Hi/Low ratio gearbox which at the moment is geared for 65 mph at 8500 rpm. which it will achieve under favorable conditions. Those extra 35cc's and the fourth gear make a world of difference.
It will do in excess of 120 mpg with the throttle pinned while drafting HGV's even though the carburation is not fully sorted. I have located a 'dustbin' fairing, which I hope to fit soon.
I'm unable to post a photo of the wee beastie yet (less than 5 posts) so I've put 3 photos into my album, I assume these will be available to anyone who is interested.

08-13-2013, 06:53 PM	#313 (permalink)
Ironside EcoModding Lurker Join Date: Aug 2013 Location: West Wales,UK Posts: 88 Thanks: 16 Thanked 57 Times in 24 Posts	Thanks for the reply Visionary, I didn't want to highjack your thread, a brief description follows :- 1981 Honda 90zz, basically standard frame, forks and wheels. The original 90cc motor was replaced with a Honda 125 4 speed motor after the original motor seized (3 times). This was probably due to over revving because of the decreased wind resistance and standard gearing. The new motor came out of an ATC 3 wheeler farm bike and fitted straight in. It has a Hi/Low ratio gearbox which at the moment is geared for 65 mph at 8500 rpm. which it will achieve under favorable conditions. Those extra 35cc's and the fourth gear make a world of difference. It will do in excess of 120 mpg with the throttle pinned while drafting HGV's even though the carburation is not fully sorted. I have located a 'dustbin' fairing, which I hope to fit soon. I'm unable to post a photo of the wee beastie yet (less than 5 posts) so I've put 3 photos into my album, I assume these will be available to anyone who is interested.