Ooooo looky looky Enny an underslung exhaust, did you get that TZR exhaust you were on about last week? the one in the vid looks similar to the 4dl2/3 expanny, and check out laddos big Keihin carb too, don't like the idea of not having a filter on mine though.
Aye Enny probably will work great, till bits of crap start getting into the jets clogging them up. The Portuguese lads, spend a fair bit tarting their bikes up to make them look nice, but when it comes to the engine and engineering side we're miles ahead over here.
Well ,well, well, what sort of nutter would take on a project like that ey? Plus mine has a working servo, and bigger piston. Reckon I'll leave the carb at 38mm though.
-- Edited by NEV on Tuesday 21st of May 2013 03:16:52 PM
-- Edited by NEV on Tuesday 21st of May 2013 03:19:30 PM
Suspension: Front Gilera Chrono 125 inverted suspension.
Steering Damper: 3 possible regulations.
Frame: stock modified.
Swingarm: Honda XR 600 alloy polished.
Chain: 420
Fenders: Rear Honda CR 250, front Acerbis Supermoto, UFO headlight.
Stop light: LEDs.
The purpose of this hybrid prototype is, to create an outstanding 2-Stroke supermotard, uniting a supermotard with a pure GP 2-Stroke engine. So, we picked up our Honda CRM 50 chassis whose weight is equivalent to a 125cc trail like Honda CRM 125 or Yamaha DT 125R, with an approached weight of 100 kg, and assembled the Yamaha DTR 125 engine . The only Yamaha DTR 125 parts in the engine are the crankcase, the crankshaft and the cylinder. The Yamaha TZR 125 parts later installed are the gearbox sprockets.
Now we pass to the study of the Honda CRR (TZR 125 gear box), from which we can take many conclusions about the performances and losses between gears in a percentual way. So, we now give the graphic relative to the Jumps/Losses Between Gears (%) for the Honda CRR:
As we can see through the Graph "Jumps Between Gears (%) Honda CRR", that the gearbox is very nice for top speed, the first gears are somehow long, then the 3 last ones are very short. As we can comprove by the Graph, the Jump/Loss between 5th and 6th gear is 9.10%, a good value for this kind of engine tuning, as we know in street bikes/GP bikes, the gearboxes are very close ratio to prevent breakings between gears.
HEHEHEHEHEHE you cheeky little monkey! The bloke said getting over 100 mph wasnt the issue it was getting the acceleration to match that of a 4 stroke supermoto like a ktm 520 but they did well :P
HEHEHE
