Quote Originally Posted by jape View Post
The likeliest immediate problem for me is going to be the gearing. I live in the bush and after a few km of dirt I am on open roads and freeways for 30 to 100 km. Safety says I need to be doing 100 km and keeping up with the flow.

Now this bike was sold to me as a 100 km.p.h bike and obviously isn't, 85 to 90 more like it but I have had other small engine bikes (250cc) that could do 100 km plus all day. I know 25% smaller makes a difference there especially as I am 15 stone plus gear but I am hoping to improve the top end a little. It has no problem pulling me and a girlfiend away so it has plenty power enough for when I am riding solo (99% of the time).

I have read that road tyres (it has nobblies of course) will make it even slower, if easier to ride. So ... any ideas on gearing the rear sprocket as far as possible. Makes, sizes etc.? And possible carbie changes. It has a jap 'walbro' as fitted.
Re gearing for Rt 200 Kinlon- I have owned one for 18 mths, and fitted a 35T rear sprocket 18,000klm ago. I took the standard rear sprocket to my local Honda dealer ( Sydney, Australia )and they were able to order in a sprocket to suit.It was'nt a stock Honda item, so here are the markings off the sprocket, if it helps you.
The packet containing the sprocket is marked 'Manufactured by Jomthai Asahi Co.,Ltd' and 'Japanese steel, made in Thailand'.The packet and the sprocket both bear an emblem of a rising sun with 'jt' underneath.
The sticker on the packet has 41200-KRO-600 and 32-KRO-35/07 stamped on it. The sprocket itself has JTR279-35 and, seperately, C45 stamped on it.
Cost was $45.With a 35T on the rear wheel, the engine is more relaxed.Top speed rises to 115kph, and the bike will sit on 100kph for short periods, but is still happiest between 80-90kph.I have run my Rt200 at 100kph for up to 15 minutes, but the engine definitely does'nt like it, so I keep the speed to about 95kph max, except on downhill runs.
Hope this info helps