How do all, I'm new on here but it seems like a great site! Just brought an xr250r to start riding on so I expect I'll be annoying you all with questions!
I've got a landy that I go offroading in, and the mate I go with also has a bike so I had a go on that one day and was hooked! I'll have a bike to fix now as well as a Land Rover!
Anyway, thats a bit about me, onto my question, sproket gearing. I did read a thread about and from what I understand, increase the teeth on the front sprocket and reduce them on the rear give you more speed, and decreasing the teeth on the front and increasing the rear gives you less speed (but more torque)? Is that right? Or am I being a bit of a numpty

Cheers, Ben

hey Ben.
There is tonnes of info on the sprocket thing, and I am sure on many other things you will stumble across. Just do a search and you will be surprised! good luck!
orrin

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You're correct on the gearing thing.

Lower=
fewer teeth on counter shaft sprocket
more teeth on rear sprocket

Higher = the opposite

The easiest and least expensive change is the front sprocket, usually 1 tooth, and doesn't require a change in your chain length.

Ben, you don't mention how old your bike is but there's a good read about XR250s (L & R) here with some mention of sprocket details as well as a lot more. It relates to fairly old bikes but the XRs don't change much, do they?

I learnt to ride on an XR250.

Have fun, Stephan

Cheers guys Its a '91 XR, they didn't change much really from when they were made 'til about 96, then from 96 onwards they didn't change much I dont think!
Never thought about it but if you put bigger/ smaller sprockets on the back do you have to have a different length chain?! Suppose it would make sence!
Thanks for the link too, I'll have a looksee.

Cheers, Ben

Hey ben and welcome to HU.It's a great site and i'm sure you will find all the information you need on your bike.Go over all the old treads and you will find a wealth of useful info....

Depends on how much forward/rear adjustment you have with the rear axle, Yes, you're correct, it does make sense.

Hi Ben, Sorry to burst your bubble

Good, I've got enough to do on the landy! I know its an old one really, but I got it cheap and its what I'm after, a cheap bike to learn on and doesn't matter if I do happen to bash it or scratch it! I'd be a bit gutted to buy a brand new one and break it

Cheers, Ben

Hi Ben,
I used to find it difficult to remember the effect of changing the teeth on the front/back sprockets; this was until I looked more closely at the derailleur gears on my bicycle - that confirms what is going on every time you feel it harder or easier to pedal!

Cheers,

Dave