DR650 front sprocket?

[marks]

my son and I often have races on long down hills with our engines off and in neutral. Its surprising how much braking confidence you develop in your rear brake when you can hear how much traction it has. That alone has changed the way I use my back brake off road. He beats me every time

and Fran is right - small front sprockets root lots of things - themselves, the chain, the swingarm chain guides

[ducatijim]

You're the one that went from a 650 to a 990!

Big wrong actually, I have a 250 instead of the 650 now!

[ducatijim]

and Fran is right - small front sprockets root lots of things - themselves, the chain, the swingarm chain guides

13T on a DR is not a problem. No, really!! I cannot understand why I am attracting so many 'doubters' when I have used a 13T for many K's of kms and had no issues?

I guess I have no credibility.

funny...........

[NordieBoy]

13T on a DR is not a problem. No, really!! I cannot understand why I am attracting so many 'doubters' when I have used a 13T for many K's of kms and had no issues?

I guess I have no credibility.

funny...........

Rick from Procycle in the US also loves his 13t.
He runs from 13 to 16t fronts.

I just don't like the idea of such a small sprocket on the DR.
But if I tried one for the hills in conjunction with the 44t rear however...

It may be love. Until the 100k zone.

[NordieBoy]

Big wrong actually, I have a 250 instead of the 650 now!

990 and 250 averages out to 620.

Sounds a suspiciously orange sort of number.

[countryguy]

13T on a DR is not a problem. No, really!! I cannot understand why I am attracting so many 'doubters' when I have used a 13T for many K's of kms and had no issues?

I guess I have no credibility.

funny...........

Thanks...thats just what I need to hear.

[cooneyr]

my son and I often have races on long down hills with our engines off and in neutral. ....

Umm you realise that the oil pump won't be pumping oil to the gearbox - specifically oil to the CS (which is still turning) bearings. Be much better to leave the motor running with it in neutral. Probably not a big deal as minimal to no load on the bearings, but food for thought.

Cheers R

[marks]

Umm you realise that the oil pump won't be pumping oil to the gearbox - specifically oil to the CS (which is still turning) bearings. Be much better to leave the motor running with it in neutral. Probably not a big deal as minimal to no load on the bearings, but food for thought.

Cheers R

I don't think this is a problem on a 2 stroke - aren't the gearbox bearings splash fed? On a 4 stroke - I'm not so sure but I thought it was all splash lubricated and the oil pump just does the bearings and valve gear?

nothings exploded yet - its no different than towing a bike is it?

[Woodman]

Umm you realise that the oil pump won't be pumping oil to the gearbox - specifically oil to the CS (which is still turning) bearings. Be much better to leave the motor running with it in neutral. Probably not a big deal as minimal to no load on the bearings, but food for thought.

Cheers R

Crankshaft will not be turning with the engine off, therefore requires no lubrication.

[warewolf]

Crankshaft will not be turning with the engine off, therefore requires no lubrication.

Gearbox output shaft will be though, unless you have a broken chain

LC4 gearbox is pressure fed.

[ducatijim]

990 and 250 averages out to 620.

Sounds a suspiciously orange sort of number.

No 620, or 640 or whatever.........

Green 250, the orange hump and a black bitch.......like me;quite uncomplicated really!

250's my fav

[NordieBoy]

No 620, or 640 or whatever.........

Green 250, the orange hump and a black bitch.......like me;quite uncomplicated really!

250's my fav

I do quite like my little 250 too.

[countryguy]

Must be getting used to the gearing...just rode some old rutted Hydro tracks and some fairly knarlly mountainbike tracks and was a lot more confident at higher speeds. Did hesitate at a big rocky tussock face I used to ride up a few years ago though. Can't wait to try the 13th sprocket.
Also getting used to the shingle roads around here...just came back from Accomodation House on Molesworth over Jollies pass at between 60-80k's on what are essntially road tyres.

[Woodman]

personally i would wait a wee while before putting the 13 on cos you are getting used to the higher geraring already, and probly using the grunt you now have better too.

[fridayflash]

hi all, just bought a k2 dr650 today, bought it in welly now home in napier admiring it lol, getting some usefull info
on gearing... ill def play around with mine and do roadside swaps with the front etc, i dont mind steep downhills as have
trail and enduro'd two and four strokes in the past but will want lower gearing for steeper climbs and of course... wheelies!