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-   -   Front sprocket torque? ( https://www.xt660.com/showthread.php?t=19524)

uberthumper 01-02-13 08:47

Quote:

Originally Posted by tripletom (Post 183729)
Mt-03's really do wheelie quite well though

I only tried once, but didn't think so. Stiff shock and more than half the weight on the front wheel, as opposed to the height, squishiness, and rearward weight distribution of the Ten. I can't wheelie for **** though, as you know - but the best I can do is on the Ten.

PhilinFrance 01-02-13 09:03

HERE'S A QUICKIE
Just read all through this post and very interesting BUT anyone gone UP to 16t on the front ? Just a thought but would it give better fuel consumsion ?
Cheers Phil

Black Dog 01-02-13 13:29

Quote:

Originally Posted by PhilinFrance (Post 183741)
HERE'S A QUICKIE
Just read all through this post and very interesting BUT anyone gone UP to 16t on the front ? Just a thought but would it give better fuel consumsion ?
Cheers Phil

This has come up on virtually every forum I have been a member of. I would reckon the answer is very little. All that raising the gearing does is slow the engine revs down for any given speed. This will reduce the frictional losses in the engine and transmission, but at any decent road speed these are a small proportion of the total work done by the engine, the vast majority of which is in overcoming air resistance. Let's say you raise the overall gear ratio by 10%, and thereby reduce the engine and transmission losses by 10%. If 90% of the engine's power goes into overcoming air resistance, then raising the gear ratio only reduces the engine's workload by 10% of the remaining 10%, i.e. 1%.

To reduce fuel consumption, lie on the tank, fit a fairing, or just ride 10 mph slower, but your overall gearing ratio will make little difference. You are also raising the road speed at which peak torque is reached, meaning that the bike might struggle to maintain a decent cruise.

Two examples from experience (both car-related, but the principle is the same):

Series 2 Land Rover - fitted Fairey overdrive, quieter at speed but only 1 mpg improvement in fuel consumption.

Range Rover 4.6 V8 - towing a caravan on French autoroute, left it in 3rd gear rather than Drive by accident for 200 miles approx. Expecting massive fuel penalty, in fact it made no difference at all.

It's pretty much energy in = work out, and for a bike most of that is air resistance.

Just some thoughts. I am not an expert.

PhilinFrance 04-02-13 09:37

Than settles it then !!!!
It was more of an idea than a reality as once or twice a year i blast back to the UK to see family , around a 2000 mile return and i only really stay there for a long W/E
Phil

phil ten 04-02-13 13:44

at some point in the near future im going to need a new chain & sprocket set. Was thinking of going just 1 up on the back..so 46? (45 standard isnt it?)

will the OEM chain length be ok?

Eddiw 08-09-13 10:55

Quote:

Originally Posted by phil ten (Post 183890)
at some point in the near future im going to need a new chain & sprocket set. Was thinking of going just 1 up on the back..so 46? (45 standard isnt it?)

will the OEM chain length be ok?

Late answer, but no, you will need a 112 length chain if you got 1 tooth up on the rear sprocket.

I have just ordered 15/46 with a DID VX2 520, 112 length chain.


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