Front sprocket change...

[bschurmann]

I think I asked about this when I first bought my bike but here it is again.

I want to change out my front sprocket and just want to get a heads up on anything to look out for.

I read the "how to" listed on here so it seems the hard part is getting the rear tire aligned. The rest should be a cake walk.

Any thoughts??? Tools I should have handy???

Thanks in advance.

[yuu]

Rear stand
Wrenches and sockets for the axle and adjusters
Torque wrench
Allen keys.

[ducatiloo]

Gear Puller if it's on tight.

http://www.jcwhitney.com/webapp/wcs/...atalogId=10101

[zooom]

Originally Posted by ducatiloo

Gear Puller if it's on tight.

http://www.jcwhitney.com/webapp/wcs/...atalogId=10101

on a 2001 M900....you won't need a gear puller....2 5mm (if I remember correctly) allen bolts and thenyou may have to wiggle the sprocket a lil to get it off...

I hope you are changing the chain and both sprockets at the same time?...because the chain will have to come off in order to do this more easily...

[Serenitynow]

I have '97 M750 and it was the best 30 minutes I invested in the bike! That includes the whole thing, new front sprocket, cleaning in that area, chain tension and alignment, and chain cleaning/lube. This is very simple folks. 3 Allen bolts to take off the plastic sprocket cover. 2 for the front sprocket holder. Loosen the rear wheel axle bolts some to give some slack to the chain. The front sprocket will slide right off. I cleaned the area there since I had access and put the new sprocket on and reversed the procedure to put things back together. Use Lok-Tite thread lock (or similar) on the 2 allen bolts for securing the sprocket. When you get it back together use the rear bolts at the rear of the swing arm for adjusting the chain to the proper tightness and alignment (see other posts re. that...and don't just go by the adjustment lines of the tensioners because it doesn't mean you're lined up just because they're both on the same line!), tighten the rear wheel axle (check your chain slack again because sometimes things will move during the tightening) and then tighten up the adjusters one more time. Thanks for that last one goes to another post on here - I didn't tighten those after properly adjusting them and tightening the axle bolts and they were loose as the other post said they'd be!

I also cleaned and lubed the chain with Maxima Chain Wax according to the vid by Cycleworks.

The newer bikes have a bigger bolt and lock washer thingy on the sprocket but otherwise it should be pretty similar to the above.

The change was incredible! Why does Ductai gear their bikes so tall?

I'm almost tempted to go up on the back sprocket as well. Right now I'm at 14/38. Does anyone run a 750 at 14/40 or 14/41?

[zooom]

Originally Posted by Serenitynow

The change was incredible! Why does Ductai gear their bikes so tall?

I'm almost tempted to go up on the back sprocket as well. Right now I'm at 14/38. Does anyone run a 750 at 14/40 or 14/41?

a few weeks back I did "2wheeler"s chain and sprocket set on his 01 M750 and I think we put on a 15/43 combo....

and as far as why they are geared they way they are....my best guess is for maximum bike potential since not all bikes are ridden in metropolitan areas and need the ramping up the rev range that higher gearing does provide....

[ducatiloo]

Originally Posted by zooom

a few weeks back I did "2wheeler"s chain and sprocket set on his 01 M750 and I think we put on a 15/43 combo....

and as far as why they are geared they way they are....my best guess is for maximum bike potential since not all bikes are ridden in metropolitan areas and need the ramping up the rev range that higher gearing does provide....

They are geared that way to make the Great EPA happy, in regards to noise / emissions.

[Serenitynow]

I've always heard that about the EPA etc. but is it the gas mileage figure they're trying to hit? How do they measure the noise, while accelerating or at a stop at certain rpms? Anyone know?

Anyway, it's a nice EZ fix to get some more usable power and drivability.

[bschurmann]

oh boy!
I think mine is a 14/41.

The kid I bought the bike from just wanted to do wheelies.

I do not recommend it.

I have to double check what I have but I think the extra front sprocket I have is 15t (stock one). However it works out, I am actually lowering the gearing on my bike. Right now it just has wayyyyy too much torque. As for the gas mileage... mine sucks it down when I am on the highway. I think I am up around 7000rpm at 75 mph.

Serenity,
Is there any chance you live out near Leesburg and would be willing to help out a fellow rider for 30 min?
I think I can tackle the myself but it certainly cant hurt to have someone around who has already done the work.

[Serenitynow]

Hi,
I'd love to help but I'm down in GA so it might be awhile before I arrive! Sorry, if only you were closer. But, I bet you can handle it just fine.