121-136 SX6 gearing

[A couple of bucks]

1. 99 SX6
2. Putting in a 121-136 HARTMAN kit
3. I need best guesses on gearing and clutch set-up.

Thanks

 

[A couple of bucks]

I see that the MM for the same year came w/ 19/39 gearing!!!!!

 

[SWEDE]

Gear down one tooth on the top from where you are if you were happy before.Your clutching will be very close with this if you were dialed in as a shorty.This was Turk's advice to me when I did a 136" on mine.I ended up at 39/21 which seems to be a good all around ratio for midwest style riding.This required a 68 link chain with the top gear change.

 

[A couple of bucks]

I believe there is a 21/40 w/ a 70L chain in her now. Is there a 20 tooth gear? And would 60 (having a 20/40)total teeth necessate a 68L?

 

[SWEDE]

Not sure about that, somewhere in the technical section is a chart with gear ratios and required link chains.Although I think your current ratio should work very well for you with a 136".

 

[staggs65]

I use a 68 with 20/40 in my srx if that helps any.

 

[A couple of bucks]

Does anyone know how wide the stock ones are in this old girl? I definately want all the goodies in hand before diving in.

 

[A couple of bucks]

I use a 68 with 20/40 in my srx if that helps any.

I appears that this is the cut-off from a 68l to a 70l. 60 total teeth need a 68l and 61 total teeth need a 70l.

 

[A couple of bucks]

I see that the MM for the same year came w/ 19/39 gearing!!!!!

Whoops.... that was for a twin.

 

[A couple of bucks]

I know this is gonna be pretty much on the money, but does anyone have any tweeks to the rivit weights(or anything else) in Turks setup, as the kid is probably @ 250# w/ gear on.By the way....looking for 8-ca weights.

cut & pasted from Turks setup page:
99 SX600 Trail
51/43 Helix, 8-ca weights 0.8g in tip, 2-3 engagement shims, stock spring primary, silver secondary, 1 or 2 layers removed from head gasket and 20/40 gearing. Jetting: 140 mains