1979 Trek 710 Project
#26
Thread Starter
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Joined: May 2017
Posts: 698
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From: NE Ohio
Bikes: 77 Trek TX900, 81.5 Trek 950, 83 Trek 970, 84 Schwinn Peloton, 88 Schwinn Premis, 85 Pinarello Montello, 88 Lemond Pro, more...
Thanks everyone. I will probably retain the TA crank.
[MENTION=20548]JohnDThompson[/MENTION] have you seen the "REK" seat stay before?
[MENTION=20548]JohnDThompson[/MENTION] have you seen the "REK" seat stay before?
#27
Senior Member

Joined: Feb 2005
Posts: 1,943
Likes: 23
From: Thornton, CO
Bikes: 2003 Orbea Orca, 2003 Bianchi Imola, ? Waterford
That half dollar brings back fond memories of my dad's coin collection...Back OT. Great score on the Trek. The Phil hubs should last longer than all of us with maybe a bearing change or two...
Last edited by ptempel; 03-09-18 at 08:20 AM.
#28
Old fart



Joined: Nov 2004
Posts: 26,411
Likes: 5,350
From: Appleton WI
Bikes: Several, mostly not name brands.
#30
Thread Starter
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Joined: May 2017
Posts: 698
Likes: 294
From: NE Ohio
Bikes: 77 Trek TX900, 81.5 Trek 950, 83 Trek 970, 84 Schwinn Peloton, 88 Schwinn Premis, 85 Pinarello Montello, 88 Lemond Pro, more...
I'm building this one back up. I rebuilt the headset yesterday, which is the first I have ever done. I was a bit hesitant as it always sounded difficult, but it went pretty well. It took a few tries, but the steering feels really smooth now. I also discovered a neat tag in the head tube. Many of the components had a "ST" stamp on them - crank arm, crank rings, rear derailleur, hubs, rack and others I am probably forgetting. When I looked down the head tube, I saw a label with the name "Scott Thomas." I assume he was the originally buyer and stamped all the components with his initials. It's pretty neat to know that most of these components have likely been together for nearly 40 years. Maybe the front derailleur was replaced at some point as it does not have the "ST" stamp.
#31
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Joined: May 2017
Posts: 698
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From: NE Ohio
Bikes: 77 Trek TX900, 81.5 Trek 950, 83 Trek 970, 84 Schwinn Peloton, 88 Schwinn Premis, 85 Pinarello Montello, 88 Lemond Pro, more...
Here's a pic as the bike comes back together. As I mentioned above, this is the first time I am attempting a "build" (although, I'm mostly just taking parts off, cleaning them and putting the back on - not really a build). Any comments or tips would be helpful. I know I need them.
A few things have changed since I received this through ebay. The rear rim was bent. The LBS said it couldn't be saved. The rear hub was 120 mm, but when I measured the rear spacing on the frame it was 124 mm. I thought I wanted to change to 700c wheels from 27" anyway. I had a Campy wheelset from a Trek 700 (too big) that I used. The 710 had short reach Suntour Superbe brakes. The rear reached, but the front did not. That same Trek 700 that donated the wheel set also had a set of long reach Suntour Superbe calipers. I retained the short reach at the rear and the used the long reach on the front (I have another frame that is the exact opposite - long in the rear and short in the front. I got two working sets out of these brakes). So, the 710 has gone from a 27", 120 mm, 5-speed to a 700c, 126 mm, 6-speed. I still have the Phil Wood hubs. I would have liked to keep them with the bike. With 124 mm rear spacing, it would seem to make more sense to go 126 mm than 120 mm?
New cables, housing and bar tape have been added. The cables are installed, but not yet adjusted. This was also my first time taping the bars. I had to unwrap it a couple times. I would say the result is somewhat serviceable, but it could be a lot better. Maybe I'll try re-wrapping them again, but I was ready to move on. I installed new hoods. It took me waaay too long and a youtube search to figure out how to install them. I used rubbing alcohol to lubricate them enough to get over the brakes. That was a hour or so of learning. I could not get the hoods over the brakes without the alcohol.
Here it is so far.
A few things have changed since I received this through ebay. The rear rim was bent. The LBS said it couldn't be saved. The rear hub was 120 mm, but when I measured the rear spacing on the frame it was 124 mm. I thought I wanted to change to 700c wheels from 27" anyway. I had a Campy wheelset from a Trek 700 (too big) that I used. The 710 had short reach Suntour Superbe brakes. The rear reached, but the front did not. That same Trek 700 that donated the wheel set also had a set of long reach Suntour Superbe calipers. I retained the short reach at the rear and the used the long reach on the front (I have another frame that is the exact opposite - long in the rear and short in the front. I got two working sets out of these brakes). So, the 710 has gone from a 27", 120 mm, 5-speed to a 700c, 126 mm, 6-speed. I still have the Phil Wood hubs. I would have liked to keep them with the bike. With 124 mm rear spacing, it would seem to make more sense to go 126 mm than 120 mm?
New cables, housing and bar tape have been added. The cables are installed, but not yet adjusted. This was also my first time taping the bars. I had to unwrap it a couple times. I would say the result is somewhat serviceable, but it could be a lot better. Maybe I'll try re-wrapping them again, but I was ready to move on. I installed new hoods. It took me waaay too long and a youtube search to figure out how to install them. I used rubbing alcohol to lubricate them enough to get over the brakes. That was a hour or so of learning. I could not get the hoods over the brakes without the alcohol.
Here it is so far.
#32
Senior Member
Joined: May 2011
Posts: 2,841
Likes: 538
From: Seattle WA
Bikes: 2009 Handsome Devil, 1987 Trek 520 Cirrus, 1978 Motobecane Grand Touring, 1987 Nishiki Cresta GT, 1989 Specialized Allez Former bikes; 1986 Miyata Trail Runner, 1979 Miyata 912, 2011 VO Rando, 1999 Cannondale R800, 1986 Schwinn Passage
Very nice, I would have never come up with that blue btw but it looks great
#34
ambulatory senior

Joined: Dec 2016
Posts: 6,451
Likes: 4,519
From: Peoria Il
Bikes: Austro Daimler modified by Gugie! Raleigh Professional and lots of other bikes.
So glad you kept the t a crank. I have one and a vo knockoff as well. You can go triple but I usually go wide double with them. 26 for your small makes it so you can have a relatively tight cassette/freewheel and still have a great climbing gear. You make me want to revisit 1980.
#36
Senior Member

Joined: Sep 2005
Posts: 3,492
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From: Oakland, CA
Bikes: '82 Univega Competizione, '72 Motobecane Grand Record, '83 Mercian KOM Touring, '85 Univega Alpina Uno, '76 Eisentraut Limited
I think that looks really sharp, and what a stroke of luck that your brake reach needs are met on two bikes by swapping the calipers. Really like it so far!
#37
Thread Starter
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Joined: May 2017
Posts: 698
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From: NE Ohio
Bikes: 77 Trek TX900, 81.5 Trek 950, 83 Trek 970, 84 Schwinn Peloton, 88 Schwinn Premis, 85 Pinarello Montello, 88 Lemond Pro, more...
I (somewhat) finished it this evening. As I mentioned above, this is the first time I have tried to do this much on one bike. I am slow and the bike sat for weeks without being touched. I took it once around our 3/4 mile block to see how it ran. First, it felt lighter and quicker than expected. It tracked completely straight riding no hands. It shifted through the gears easily, although it was a little slower shifting into the smallest cog. However, the chain rubs the front derailleur when in the small ring starting with the fourth cog. It was progressivly worse in the 5th and 6th (smallest) cog. Even in the big ring, the chain would rub slightly when shifted into the two smallest cogs. I'll look through my maintenance books to troubleshoot shifting to the smallest cog and the FD chain rub. In the meantime, let me know if anyone has a suggestion on how to correct that.
I wish we had a co-op or bike shop in town. I would love to take a maintenance class or something similar.
I wish we had a co-op or bike shop in town. I would love to take a maintenance class or something similar.
#38
tantum vehi


Joined: Jul 2008
Posts: 4,624
Likes: 1,317
From: Flathead Valley, MT
Bikes: More than I care to admit
Sounds like some limit screws need adjusting?
__________________
Regular rides:
1977 Austro-Daimler Inter-10 (an experiment in valley-floor road riding)
1979 Trek 710 (first frame-up build)
1984 Specialized Stumpjumper Sport (daily driver)
1984 Peugeot Urban Express (funky rando-esque 26" gravel grinder)
2014 Salsa Mukluk (daily winter driver)
2015 Elephant NFE (Gugiefied gravel grinder)
2019 Electric Queen (first "real" MTB)
2024 Salsa Blackthorn (summer slayer of trails)
2024 Farley 9.6 (winter slayer of trails)
1977 Austro-Daimler Inter-10 (an experiment in valley-floor road riding)
1979 Trek 710 (first frame-up build)
1984 Specialized Stumpjumper Sport (daily driver)
1984 Peugeot Urban Express (funky rando-esque 26" gravel grinder)
2014 Salsa Mukluk (daily winter driver)
2015 Elephant NFE (Gugiefied gravel grinder)
2019 Electric Queen (first "real" MTB)
2024 Salsa Blackthorn (summer slayer of trails)
2024 Farley 9.6 (winter slayer of trails)
#39
Junior Member


Joined: Aug 2017
Posts: 130
Likes: 11
From: Atlanta
Bikes: '87 Centurion Ironman Expert, '88 Basso Loto, '89 Panasonic MC-5500, '92 Vitus 992
For a slow shift to the smallest cog, I would think that a half turn (or more) of the barrel adjuster would fix that, if it has one. The rubbing problem is probably the high limit screw, as mentioned. When in the small chain ring though, you will (as far as I know) have to trim the front derailer a bit if you're shifting into the smaller cogs.
Edit: Actually, scratch the whole barrel adjuster thing, that's more for indexing. It's probably just the high limit screws on both the rear and front derailers.
Edit: Actually, scratch the whole barrel adjuster thing, that's more for indexing. It's probably just the high limit screws on both the rear and front derailers.
Last edited by diomekes; 06-21-18 at 09:00 PM.
#40
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Joined: May 2017
Posts: 698
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From: NE Ohio
Bikes: 77 Trek TX900, 81.5 Trek 950, 83 Trek 970, 84 Schwinn Peloton, 88 Schwinn Premis, 85 Pinarello Montello, 88 Lemond Pro, more...
The high limit screw is adjusted as much as possible. Any further movement out and the chain jumps off the big ring. There is still chain rub when in the big ring and the two smallest cogs. Could the FD be bent? Is there something else I should check?





