[MadRiver]

Mostly a lurker here everyday, but now I have a question. I am building up my 2nd SS from a steel Stumpjumper probably in the early to mid 90s as it has 7 speed XT/LX components. If anyone has a stumpjumper, is there a magic gear combo so that a tensioner is not needed. I have used some of the available calculators for this, but wanted to see what others may be using. Thanks.

 

[xrmattaz]

My early '90's Stumpy works perfectly with a 34/18 combo. No tensioner.

Hope this helps!

 

[gpsser]

Mostly a lurker here everyday, but now I have a question. I am building up my 2nd SS from a steel Stumpjumper probably in the early to mid 90s as it has 7 speed XT/LX components. If anyone has a stumpjumper, is there a magic gear combo so that a tensioner is not needed. I have used some of the available calculators for this, but wanted to see what others may be using. Thanks.

I can run a 34:20 or a 32:18 with a little axle manipulation on my 95 M2, but it is aluminum.

 

[Onurleft]

32:18

I run a 32:18 on my 99 Stumpjumper Pro without tensioner.

 

[MadRiver]

Thanks everyone! I've got the rear cogs covered, just have to hit the bike shop for
the chainrings. I'll post a pic if I get it set up, and oh yeah if I get that digital camera
for Christmas. Happy Ridin'!

 

[Plum]

94 or 95 here

My 94 or 95 stumphumper fits a 32/16 tightly, might be a little too tight even, but it's certainly doable. Might give that a try too, depending on your local terrain. My wife is currently riding this back and forth to school here in flatland [email protected] Lansing.

Plum

 

[Farmboy]

I did 34:16 on a 95, but it was aluminum.

 

[Jonny G]

My 94 or 95 stumphumper fits a 32/16 tightly, might be a little too tight even, but it's certainly doable. Might give that a try too, depending on your local terrain. My wife is currently riding this back and forth to school here in flatland [email protected] Lansing.

Plum

I'm putting together a 96 stumpjumper and I tried all the gear ratios on this and none of them seemed to work. Could any of you guys give more detail on how I could do it without a tensor. Thanks

 

[E !]

Try 32x17 yet?

On my 2000 model rockhopper(al. frame) 32x17 fits perfect. I put a tensioner on though cuz i figure it will go slack after a few rides.

 

[Suffer]

That model year has a semi-horizonal rear dropout. It should give you about a quarter of an inch to play with. I put a chain tug on the drive side(had to do a little modification) to keep the axle in place. I really don't need it because it never moved when I just used the quick release to keep the wheel in place. I can post a picture if you want.

 

[trlrnr]

32x17

That model year has a semi-horizonal rear dropout. It should give you about a quarter of an inch to play with. I put a chain tug on the drive side(had to do a little modification) to keep the axle in place. I really don't need it because it never moved when I just used the quick release to keep the wheel in place. I can post a picture if you want.

Yo

I run 32 in the front, and a 17 BMX freewheel in the back on a 95 Stumpjumper FS that is steel.

Works like a charm, no tensioner.

Good Luck

 

[Jonny G]

That model year has a semi-horizonal rear dropout. It should give you about a quarter of an inch to play with. I put a chain tug on the drive side(had to do a little modification) to keep the axle in place. I really don't need it because it never moved when I just used the quick release to keep the wheel in place. I can post a picture if you want.

Yes, pictures would be great.

 

[pacman]

Thanks everyone! I've got the rear cogs covered, just have to hit the bike shop for
the chainrings. I'll post a pic if I get it set up, and oh yeah if I get that digital camera
for Christmas. Happy Ridin'!

I see a number of reports that imply different chainstay lengths. There's no way to tell which combination is right for you MadRiver.

Did something work anyway?

 

[MadRiver]

Thanks for asking pacman, but I haven't tried anything yet. Getting an ENO hub may be the best bet anyway. My SS now is a Chameleon and I use the Surly tugnut which works great. However seems like with chain-stretch I am tightening it every few rides, so seems like the perfect fit might only last so long before a new chain would be needed. FWIW I would guess the 34 X 18 would be the best.

 

[Suffer]

Thanks for asking pacman, but I haven't tried anything yet. Getting an ENO hub may be the best bet anyway. My SS now is a Chameleon and I use the Surly tugnut which works great. However seems like with chain-stretch I am tightening it every few rides, so seems like the perfect fit might only last so long before a new chain would be needed. FWIW I would guess the 34 X 18 would be the best.

Correct. I have about 450-500 miles on this chain and I have slowly moved the axle back as needed. That is the great thing about the Stumpjumper it has some play in the drops.