Street Stock 250cc 4-stroke twins

[RDjase]

Yeah, that would be one of the best I've heard of.

That was the original one on it, Shame it got smashed in one of the offs my LC has had(a mate crashed it when it was still a minter ), the one on it now is out heaps Its reads really low, only says 140 hard out now. on the open road sticking with the traffic it says just over 70kmh

[DELLORTO]

That was the original one on it, Shame it got smashed in one of the offs my LC has had(a mate crashed it when it was still a minter ), the one on it now is out heaps Its reads really low, only says 140 hard out now. on the open road sticking with the traffic it says just over 70kmh

your RD would pull 200km/h-220km/h?? thats what im guessing.......speedos are mostly crap from cheap bikes......i dont realy care about how fast im going just along im keeping up.

[puddytat]

i think it the brand cuz my dads 900 has the same rim and tyre size as me but his dont buldge like the shinkos so im thinking 150/70 diablos as mt eden have a special on at the moment 499 front and rear plus fitting

I thought the rules said that max tyre size was 140/70/17? You might want to check...

[RDjase]

your RD would pull 200km/h-220km/h?? thats what im guessing.......speedos are mostly crap from cheap bikes......i dont realy care about how fast im going just along im keeping up.

I did a flying 1/2 mile years ago on my RD350LC road bike. I got 179.9 Kmh out of it so close to 180 . 45 rear wheel HP(was 39 but junked the standard restrictive air box and mucked around with jetting on my mates dyno and got 6 hp. Air box technology has come a loong way in 29years lol)
It is 149.5 kg in road trim on reserve (2 ltrs maybe) That was weighed at the kart track. I had a 17 front sprocket instead of the standard 16, the mirrors taken off and it is a Naked bike. Me with my gear on is 75kg. The speedo wasnt too far out saying 187ish. I left that gearing on it as ,it still wheel stands easy as.
Good old 2 strokes before Power Valves aye

180 is it mate, well on my stock road bike anyway, will get more out of the race bike(still had a stock engine, done heaps of work) 16/39 standard gearing 17/39 now. but want to get a 38 rear and a 40 plus change from 530 chain to 520. A big weight reduction there. It still accelerated well and was tapped out 2/3rd of the way down taupos long straight. Will put a bikini fairing on too, I have got a cool late 70s one for it

[chaos rider]

That is good.They may travel quicker than the claimed 140 when run in and run in.160 true speed on a gt250r would be a legend result with pipe etc.
I would bet that geared down slightly could make them faster.Peak rpm in top would be easier to achieve.

you reaaly need the fairings on them at 140 by my speedo, if i lift my head up i lose a bit of speed. because the hp is rather low on them having the fairings on dose make a huge difrence.

[mossy1200]

I thought the rules said that max tyre size was 140/70/17? You might want to check...

13-3 Tyres
Only tyres on general sale to the general public in New Zealand as road legal fitment will be permitted.
Front and rear tyres fitted must conform to the tyre importers specifications for the homologated rim sizes that model.
Tyre warmers are not allowed.

I read that as being not the bike manufacturer recommended 150/70/17 but as tyre producers recommended fitment.So 140 or 150 on 4inch rear and 120 or 110 on 3inch front.If the rim sizes are not 3 and 4inch then this would change.

[puddytat]

13-3 Tyres
Only tyres on general sale to the general public in New Zealand as road legal fitment will be permitted.
Front and rear tyres fitted must conform to the tyre importers specifications for the homologated rim sizes that model.
Tyre warmers are not allowed.

I read that as being not the bike manufacturer recommended 150/70/17 but as tyre producers recommended fitment.So 140 or 150 on 4inch rear and 120 or 110 on 3inch front.If the rim sizes are not 3 and 4inch then this would change.

Aaaahaaaa...

[ducatilover]

you reaaly need the fairings on them at 140 by my speedo, if i lift my head up i lose a bit of speed. because the hp is rather low on them having the fairings on dose make a huge difrence.

I've had cbr and zxrs all indicating past the end of the clock and my bros pointing at somewhere ridiculous which in reality wasn't too fast

[chaos rider]

I've had cbr and zxrs all indicating past the end of the clock and my bros pointing at somewhere ridiculous which in reality wasn't too fast

ok i was just saying that the hyo that did that speed run could have gone faster if it were faired

[ducatilover]

ok i was just saying that the hyo that did that speed run could have gone faster if it were faired

I was meaning with yours dude. The naked ones can't pull the skin off a banana

[chaos rider]

I was meaning with yours dude. The naked ones can't pull the skin off a banana

ok, wasnt sure what you ment with the cbr.. ect in relashen with my comment, infact im still mot sure

[Mully]

The naked ones can't pull the skin off a banana

I like the phrase "Couldn't pull a rapist off your Granny" for some reason.

Or "Couldn't pull a boyscout off his sister"

Must be just me.

[ducatilover]

ok, wasnt sure what you ment with the cbr.. ect in relashen with my comment, infact im still mot sure

Meaning, if a cbr xxxkm/h....your speedo must be miles out....

I like the phrase "Couldn't pull a rapist off your Granny" for some reason.

Or "Couldn't pull a boyscout off his sister"

Must be just me.

Yeah, I was going for a fresh approach....

[chaos rider]

mark at mt eden is susin me out with a rear 2nd hand 160/60 17 perreli i think for $30 yes "30" still in good condition for a couple more races

meseared my rims rear is 4,1/2'' front is 3'' i should be good with the front but ill see on the 4th

[Hiflyer]

I like the phrase "Couldn't pull a rapist off your Granny" for some reason.

Or "Couldn't pull a boyscout off his sister"

Must be just me.

A guy on trademe said his z1000 pulls like a schoolboy... dont know wtf to think about that.....