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Show your Trek Multitrack!

Old 07-28-21, 08:00 PM
  #676  
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Does anyone know is seatpost binder bolt is M6 or M8?
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Old 07-31-21, 04:48 PM
  #677  
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So I got my frame from powder coating. I have been working on it today and Iím having an issue with SRAM Apex 10 speed 50/34 crankset. Big chainring is hitting the chain stay. Is 92 frame incompatible with 50 chainring? Can I use spacers or do I have to go down to smaller chainring or maybe run 1x10?
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Old 07-31-21, 06:30 PM
  #678  
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Some models of the MultiTrack came with 28-38-48 chain rings, so a 50 should fit assuming you're trying to position it about where the large chain ring would be on a triple crank. If you're installing a 34-50 double on the same BB length or spindle as the triple used, then you probably will have a conflict with the chain stay. Is this a square taper crankset or a two piece, like a SRAM GXP or Shimano Hollowtech?
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Old 07-31-21, 06:54 PM
  #679  
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Originally Posted by hokiefyd View Post
Some models of the MultiTrack came with 28-38-48 chain rings, so a 50 should fit assuming you're trying to position it about where the large chain ring would be on a triple crank. If you're installing a 34-50 double on the same BB length or spindle as the triple used, then you probably will have a conflict with the chain stay. Is this a square taper crankset or a two piece, like a SRAM GXP or Shimano Hollowtech?
Itís a sram GXP. What would be my options now?
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Old 07-31-21, 07:40 PM
  #680  
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Mmm. I'm not an expert on SRAM GXP. I'm thinking that you could install a ~2mm spacer inside at least the drive side cup to space the crankset over a little bit. I don't know if that'd offer you enough room or not. If not, then I'd say you may need to consider either a smaller chain wheel or something like a square taper crank where you can tune the chain line a little easier (with different length spindles).
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Old 08-02-21, 02:03 PM
  #681  
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Originally Posted by hokiefyd View Post
Mmm. I'm not an expert on SRAM GXP. I'm thinking that you could install a ~2mm spacer inside at least the drive side cup to space the crankset over a little bit. I don't know if that'd offer you enough room or not. If not, then I'd say you may need to consider either a smaller chain wheel or something like a square taper crank where you can tune the chain line a little easier (with different length spindles).
I got more parts coming in so I will see what, if anything, fits.
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Old 08-02-21, 04:37 PM
  #682  
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Originally Posted by bh85 View Post
So I got my frame from powder coating. I have been working on it today and Iím having an issue with SRAM Apex 10 speed 50/34 crankset. Big chainring is hitting the chain stay. Is 92 frame incompatible with 50 chainring? Can I use spacers or do I have to go down to smaller chainring or maybe run 1x10?
It seems like you ran into a chainline issue (road double [43.5mm] vs MTB triple [47.5mm]). Basically, your 50t is roughly where your middle ring is now.

These modern road cranksets from Shimano, SRAM, and Campagnolo are not meant to run shims on the BB, there is no chainline adjustment. GXP especially uses a stepped down spindle which requires a specific distance for preload; unless the shell is way out of spec, BB shims are not used on road cranks.

It looks like a Shimano Hollowtech II 50/34 fits.
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Old 08-02-21, 09:21 PM
  #683  
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Originally Posted by DorkDisk View Post
It seems like you ran into a chainline issue (road double [43.5mm] vs MTB triple [47.5mm]). Basically, your 50t is roughly where your middle ring is now.

These modern road cranksets from Shimano, SRAM, and Campagnolo are not meant to run shims on the BB, there is no chainline adjustment. GXP especially uses a stepped down spindle which requires a specific distance for preload; unless the shell is way out of spec, BB shims are not used on road cranks.

It looks like a Shimano Hollowtech II 50/34 fits.
I got Fsa Tempo Adventure square tapered crankset. That way it gives me more chain line adjustment. What do you think about using that with SRAM apex 10s?
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Old 08-03-21, 04:49 AM
  #684  
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Originally Posted by bh85 View Post
I got Fsa Tempo Adventure square tapered crankset. That way it gives me more chain line adjustment. What do you think about using that with SRAM apex 10s?
should work fine, but not a fan of FSA. These cranks use a proprietary 80mm bcd, which I find unneccessary.
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Old 08-03-21, 06:15 AM
  #685  
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Originally Posted by DorkDisk View Post
should work fine, but not a fan of FSA. These cranks use a proprietary 80mm bcd, which I find unneccessary.
I have a couple of FSA cranksets myself which use the standard 64/104mm BCD and they seem to work well. I looked up the Tempo Adventure model and FSA's page says it's a standard 110mm BCD. Is this the correct model?
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Old 08-03-21, 06:19 AM
  #686  
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Originally Posted by hokiefyd View Post
I have a couple of FSA cranksets myself which use the standard 64/104mm BCD and they seem to work well. I looked up the Tempo Adventure model and FSA's page says it's a standard 110mm BCD. Is this the correct model?
Adventure is 46/30. 110bcd has a min ring size of 33. This uses an 80mm bcd for the small ring

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Old 08-03-21, 06:22 AM
  #687  
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Originally Posted by DorkDisk View Post
Adventure is 46/30. 110bcd has a min ring size of 33. This uses an 80mm bcd for the small ring
Well, that's pretty sneaky, isn't it?
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Old 08-03-21, 09:47 AM
  #688  
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Originally Posted by DorkDisk View Post
should work fine, but not a fan of FSA. These cranks use a proprietary 80mm bcd, which I find unneccessary.
Yea as long as it works. We will see how the chainline will look. I got square tapered BB with 122.5 long spindle. Do you think that would be a good length?
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Old 08-03-21, 09:54 AM
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Sounds crazy long. 122.5 is old, old school triple. I haven't used that since....92?

Doubles use narrower spindles
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Old 08-03-21, 10:07 AM
  #690  
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Originally Posted by DorkDisk View Post
Sounds crazy long. 122.5 is old, old school triple. I haven't used that since....92?

Doubles use narrower spindles
I also have 118. What would your guess be for the length needed for the correct chainline?
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Old 08-03-21, 10:09 AM
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Don't guess. Read the manual.
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Old 08-03-21, 11:03 AM
  #692  
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Originally Posted by DorkDisk View Post
Don't guess. Read the manual.
Manual said 118 bb will give 44mm chainline.
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Old 08-03-21, 11:49 AM
  #693  
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Originally Posted by bh85 View Post
Manual said 118 bb will give 44mm chainline.
I would have not guessed that correctly. My guess would have been much narrower, 107-115mm
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Old 08-03-21, 08:55 PM
  #694  
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Here is work in progress.
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Old 08-17-21, 08:21 PM
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Here is my finished build.
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Old 08-18-21, 06:29 AM
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Originally Posted by bh85 View Post
Here is my finished build.
How are those brakes working out? Most people run travel agents with STI and V brakes, or run mini-Vs.
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Old 08-18-21, 07:41 AM
  #697  
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Originally Posted by DorkDisk View Post
How are those brakes working out? Most people run travel agents with STI and V brakes, or run mini-Vs.
They seem fine. They are shimanos. Iíll still have to give it a better test. By the way 122.5mm bottom bracket gave me a great chain line that I needed. 118 was too short.
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Old 08-20-21, 11:28 PM
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Originally Posted by DorkDisk View Post
How are those brakes working out? Most people run travel agents with STI and V brakes, or run mini-Vs.
just wanted to let you know that I did switch to cantilever brakes. While V brakes worked, you really had to squeeze them a lot. Cantis are perfect.
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Old 08-21-21, 04:40 PM
  #699  
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Okay, okay. I get it already!

I'll look for one.
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Old 08-26-21, 08:11 PM
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Well, it looks like I may have tracked down a 750! Once against putting trust in Craigslist humanity, I've struck a deal with a seller in California who has shipped a 55lbs box which should arrive in a week. It's a black 23" 1992 model that will need some work. In the time since I last posted, I picked up a 22" 950 frameset with wheels. Now I'm trying to justify keeping both; 3 bikes were plenty, 4 may be pushing the limit of capacity here. Maybe if I hang it artfully in my room...

I think, in reality, the 950 may get boxed up and stored for the time being. I also need to sort out a click on my 710... and list some other parts from a salvage buy... it never stops, does it? hahah


Seller photo
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