DT125R ARCHIVE

Calum122 · Guru

RE: fuse in back of speedo 2003 dtr

madrevs · DTR Senior Member

Will check in a bit weird how it will redline in 5th though at 10000 revs in 5th will do 60 is that about right for standard gearing

dread123 · Moderator

no it should still pull more than that on standard gearing! mine was the the reed switch stopping mine over 55-60...once removed it would pull 70+ -now with my different gearing etc -pulls 80+ now :p

madrevs · DTR Senior Member

Does seem like it could be the sprockets then didnt get a chance to check last night will try and check today

madrevs · DTR Senior Member

Have you really lowered the bottom end power though by changing your gearing

dread123 · Moderator

yep more geared now for topend power, although i am thinking about changing sprockets again on front- can see no point why i need this DT to go over 80mph?? I've got a car that will do all that!!

might drop back to a 13t front sprocket, very rapid acceleration then :p

madrevs · DTR Senior Member

I would be happy with about 70/75 top end to keep up with traffic on dual carriageways

Calum122 · Guru

I've got 13 front and 46 rear. I'd rather have more bottom end grunt since I do more traffic riding. But during the summer months it is nice to just go for long blasts. My brother gets annoyed cause his RS is good for a ton where as my DT barely does 60 :( It is running rather poo atm.

madrevs · DTR Senior Member

Bet his rs needs rebuilding alot though.so if I change front and rear sprockets if that turns out to be the problem.do I have to change the chain aswell as theres nothing wrong with the chain

dread123 · Moderator

i run a 520 conversion on my dt. but only change the front sprocket...no need to chnge both mate, one or the other is only needed

madrevs · DTR Senior Member

What if tgeytve both been changed to non standard though how would I work out how many teeth I need

dread123 · Moderator

count the teeth and then post :p

Calum122 · Guru

He's had it three years and it has never needed a rebuild.

I posted up and stickied a calculator on here mate.

Count the teeth first. If its standard then it should do standard speed.

madrevs · DTR Senior Member

Will do might have to get an rs lol

madrevs · DTR Senior Member

Sorry for late reply had a lot of things going on recently its got a 16 front and 57 rear