85cc max, everthing else open or why bother. You'll never match the 94cc kit Derbis and they won't match the hot FXR's.
Oh and theres a reason the 150 four strokes replaced the 85cc two strokes, same would apply for buckets. The 85 is unlikely to be a winner even when fully worked but it does offer a decent available platform.
Edit: I might be wrong as I just checked the Aus bucket championship points and RS85's 1st and 2nd, but then 150 four strokes for the next four places.
Yea but you would have to say the derbi kits are a little on the grey side of things Kel; under the current rules.
While it has been argued that they are not a performance I mean competition part, they are used as such in some countries..
Yea but hard pressed really to get big numbers out of a road going 156cc four stroke... Lots of hard work to get us to that point (not mine though!! I'm not good enough to have a full GPR150 factory engine)
I do agree a good basic engine to work with. No different than the TF100s back in the day...
But I bet you, putting one in a RS/TZ etc and putting a young gun on it, it would be an equal weapon to the derbi...
http://www.ozbucketracing.com/#
Ahh boolshit. That Derbi is a peaky 24-25hp. And a bit more than 80 I think but only a bit.
And comparing it with the Works RSA is just moronic. C'mon, none of us are ever going to get anywhere near that potential are we? I mean really.
The comparison with a 40hp RS125 is a target. Heck the RS125 is a HRC racebike. You're not going to beat that, but if you're real skilled you might get close. By the way most NF4s put on a dyno will muster mid to high 30s only, isn't that right Scott?
The lap record Nat recently set is with the tamer engine, about 21hp. The spread of power is important on some kart tracks & the ability of the rider on a rough track is clearly the key factor here.
Don't you look at my accountant.
He's the only one I've got.
The whole frame thing "one or other" is interesting, but I don't think its necessary given the current performance. I like those kind of rules in some classes, 2 valve, FI, water cooling, any 2 of the above sort of thing.
std mx frame will be too restricting for size/geometry & add cost as shocks/forks would be Waaay too soft for a bloater adult. I rode a CR80 at Kaitoki many moons ago. bottomed out & sliding most corners. Knobblies weren't helping much
Don't you look at my accountant.
He's the only one I've got.
Don't you look at my accountant.
He's the only one I've got.
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