Hey this is my first post here. I recently bought a GT timbeline off Craiglist for the price of $25. Its not in bad shape and built really well but the bottom bracket is wearing and im having trouble locating information on this model. Ive found info but not the size of the bottom bracket. Even the pics I do find of the older timberlines, the rear brake is located on top of the frame and not under like mine. Any help would be great Thanx...

 

umm...... ummmm...

 

I guess some folks think that if it can be done, it should be done. . .

 

Anyone know the bottom bracket size for this bike??

 

Anyone know the bottom bracket size for this bike??

Look on the back of the crank arms to see which model they are, then go here

http://sheldonbrown.com/bbsize.html

Based on the age of the bike (I can't make out what crankset that is), I'd wager that it's either 68x122 or 68x127

-Jim G

 

Here's a couple for you

1996 Pantera with NOS STX-RC 7 speed Groupset, full rebuild nice and shiny again.

1997 STS-DH getting ready to put a new NOS Super Deluxe on (just sourced some mint triple clamp XL's for this)

 

Look on the back of the crank arms to see which model they are, then go here

http://sheldonbrown.com/bbsize.html

Based on the age of the bike (I can't make out what crankset that is), I'd wager that it's either 68x122 or 68x127

-Jim G

Its a Exage crankset but the bike is older than 1990 and the exage cranks on the link dont go under 1990.

 

The Tequesta that you have is from the 1988 model year and that year (see catalog pic below) every Tequesta, Timberline and Outpost had a u-brake that was chainstay mounted. There are 10's of thousands in existence. The reason you don't see many in this forum thread is because it's tends to have more upscale models that are talked about not the more basic common models.

Know the bottom bracket size?

 

do you have the tools to take the BB out?

 

do you have the tools to take the BB out?

Pulled it this morning. The only idnetification markings on it are as follows...

Hatta

01 88 (guessing this is the year)

3P Cr-Mo

Thats it, theres no size anywhere on it and like I was afraid of it fell to pieces when I took it apart. The bearing rings are garbage and ball bearings went everywhere. Googling the internet trying to find a replacement but its not looking to good. Any help with this is/will be greatly aprreciated. Thanx....

 

this may help...

Pulled it this morning. The only idnetification markings on it are as follows...

Hatta

01 88 (guessing this is the year)

3P Cr-Mo

Thats it, theres no size anywhere on it and like I was afraid of it fell to pieces when I took it apart. The bearing rings are garbage and ball bearings went everywhere. Googling the internet trying to find a replacement but its not looking to good. Any help with this is/will be greatly aprreciated. Thanx....

"The Symmetrical equivalent to a 3P axle is a cartridge BB with a 122 axle. So you need a 68x122 cartridge BB or a standard BB cup and retainer set with the same 3P axle you had."

 

"The Symmetrical equivalent to a 3P axle is a cartridge BB with a 122 axle. So you need a 68x122 cartridge BB or a standard BB cup and retainer set with the same 3P axle you had."

Thankyou...

 

80cc...assisted GT Timberline

I'll see your 80cc and raise you 500W:

 

Here's one. GT Karakoram

 

Picked this up recently just for the parts. It's a 1990 Karakoram that someone upgraded with XT derailleurs, XT wheels w/black ano'd Specialized rims, XT rear U-brake and SE Pederson front canti's, Deore thumbies, a Girvin stem, Onza bar-ends, and some Bullseye cranks. It's kinda cool seeing blue collar bikes with upgrades.

 

picked this 1988 GT avalanche I found on CL...

sorry for all the pics

pics from the guy on CL...

described as having...
Scott~wrap around mountain bars
Odyessey~stem with 3:1 ratio brake cable cam
Blackburn~rear rack
Diore II XT rims
Diore II crank, brakes and levers
Undersized forward smaller crank for speed and oversized forward larger crank wheel for climbing
After market freewheel cog on rear wheel reduced tooth on small cog (speed) and oversized tooth on large cog (climbing)
I am sure it will need new rubber though.....although I have a different tire up front

some more pics after I picked it up... only thing I did was

biopace cranks

setup in commuter mode with origin8 space bar, lights and a rack...

 

Donalson, that Avalanche is sweet. I love the hite rite and biopace rings. Nice work on the bar change out for commuting. Perfect bike.

 

Here's one. GT Karakoram

I see no bike, just trees and pubic hair.

 

Donalson...nice pick. That's the $50 bike from Pensacola. My son was at Eglin AFB and I was trying to get him to run over and grab it for me but he was buried in training and had no time.

 

Donalson...nice pick. That's the $50 bike from Pensacola. My son was at Eglin AFB and I was trying to get him to run over and grab it for me but he was buried in training and had no time.

yup pensacola CL back in early december haha... was located in fort walton beach which is right near eglin... I'd emailed him way back when... never had money and time to go get it at the same time... finaly had money and worked it out with a friend that lives over that way to pick it up for me for $50 it's a steal... i'm going to run it out on the trail at some point just to say I did ... wish i still had my lycra covered helmet haha.

 

Can anyone help identify this frame please? Its been in my garage for a few years now, never ridden it, as far as i can tell it has always been white and red, just someone has stuck a Shimano sticker over the name/model of the frame, it is 6061, and the serial is MT81205083, never built it, just wondering if anyone can help identify the age, model etc of this frame?, maybe help me even source some parts to get the suspension part built up again?, it is literally the frame and swinging arm nothing else, thanks in advance!.

Can do more pics if you need them?

 

Can someone tell me if the bike in this ad is really a Zaskar? The guy has been trying to sell it for months and it looks pretty beat up...thanks.

http://kitchener.kijiji.ca/c-buy-an...l-sports-bikes-GT-ZASKAR-LE-XC-HARDTAIL-MOUNTAIN-BIKE-custom-W0QQAdIdZ114855093

 

Can someone tell me if the bike in this ad is really a Zaskar? The guy has been trying to sell it for months and it looks pretty beat up...thanks.

http://kitchener.kijiji.ca/c-buy-an...l-sports-bikes-GT-ZASKAR-LE-XC-HARDTAIL-MOUNTAIN-BIKE-custom-W0QQAdIdZ114855093

I would say no based on the curved end of the top tube behind the seatpost. As far as I know, all Zaskars had a flat end.

 

Looks like an AVALANCHE to me. There is a thread about the end cap. I'm just too lazy to search but it has infos about the curved and flat end cap, I just cant recall if the issue was with the ZASKAR or the AVALANCHE. But it still looks like a repainted AVALANCHE with ZASKAR stickers. I'm not sure.

 

K, thanks, I was suspicious because he has a weird list of components and the frame is repainted and it has been listed for months now; the dork disk was also a bit odd. Thanks guys.