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The Trek 760 Appreciation Thread (770 and 170 included)

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The Trek 760 Appreciation Thread (770 and 170 included)

Old 06-02-21, 09:59 PM
  #301  
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Originally Posted by Mad Honk View Post
OldsCool, and others,
The 760's had a slightly lower BB and a slightly longer chainstay that made for a softer ride and more of a club racer type of bike.
It was my understanding that the 760 & 770's frames were identical. At least that's what the specifications say in the '84 & '85 catalogs. In fact, in '84 the 170 also shared the same geometry as the 760/770, according to the catalog. In '85, the 660/670 also shared the same geometry, but didn't exactly match the 760/770.
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Old 06-03-21, 07:53 AM
  #302  
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Originally Posted by Hobbiano View Post
It was my understanding that the 760 & 770's frames were identical. At least that's what the specifications say in the '84 & '85 catalogs. In fact, in '84 the 170 also shared the same geometry as the 760/770, according to the catalog. In '85, the 660/670 also shared the same geometry, but didn't exactly match the 760/770.
Yes, the 760/770 were pretty much identical right down to the “trident” fork crown and full 531c. Chainstays on the 760 were not lengthy for a racer, not by any stretch. These were top shelf class racing bikes just a step down from the mythical unobtanium 170. Twitchy? Definately, that’s what I like about them.

Here is a shot of the chainstay length/wheel clearance to the seat tube, just a few mm’s longer than my Cdale Criterium Series. Either bike is an able performer.


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Old 06-06-21, 09:15 AM
  #303  
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Here's a scan of a Bicycle Guide article on the '84 Trek 510 & 760 equipped with Campagnolo Triomphe And Victory components. They have the specifications of both bikes but seem to only talk about the components and don't say much about the rest of the bike. I'm missing the end of the article so maybe they they talked more about it there.






Last edited by Hobbiano; 06-06-21 at 10:52 AM.
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Old 06-06-21, 01:51 PM
  #304  
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Originally Posted by Hobbiano View Post
Here's a scan of a Bicycle Guide article on the '84 Trek 510 & 760 equipped with Campagnolo Triomphe And Victory components. They have the specifications of both bikes but seem to only talk about the components and don't say much about the rest of the bike. I'm missing the end of the article so maybe they they talked more about it there.
Thanks for posting these scans. nice to see actual frame & fork weights in the article..
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Old 06-14-21, 01:05 PM
  #305  
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It has arrived. (@Mad Honk)


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Old 06-14-21, 01:40 PM
  #306  
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Natterberry,
I did run the taps through the BB and all of the bosses along with the drop-out adjuster screws. You may want to run some sanding drum in the top of the seat tube to be sure it is clean and has no burrs in it. The small screws in the packet are for the cable guides on the bottom bracket. I hope it will fit you well. I didn't get many miles on this one (maybe 1500) So it should ride like a new bike. Smiles, MH
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Old 06-16-21, 08:38 AM
  #307  
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Trek 760, 770, Seat Binder Bolt Replacement is 21mm x 8mm

Originally Posted by M1T View Post
Anyone know the length of the Sugino (or any) binder bolt? 8mm diameter, but want to order the right length. Thx-
To answer my own question, a Problem Solvers Seat Binder Bolt Chromoly, 21mm is the correct choice.
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Old 06-18-21, 12:30 PM
  #308  
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First, thanks for all the replies and thought that went towards answering my question, "What color should I paint my 84 760?"

I wanted something different than the original purple body and red accent decals. So I went with a dark grey frame and fork, dark blue decals with black outlining and silver accents. These were made at Velo-Cals in 1 mil vinyl. Dark Matters Finishing in Colorado Springs helped me chose the type of powder due to its reflectivity scale (not 100% sure thats what its called, but there are differences and you can see it in powder coated frames- they can look dull with an orange peel texture, or smooth and shiny). This particular grey has a sparkle just like the purple sparkle it replaced.

After the decals were applied, I had Dark Matters applied a coat of clear coat. The result to me looks like a wet paint job at about half the cost, with a more durable finish.

I already had a full set of Shimano 7 speed Tri-Color 600 group, so I saved on costs and search time. Not 100% period correct, but that didn't bother me as we all used to upgrade components, often in a hodgepodge manner. So at least it all matches, and that group works great.

Dura Ace hubs laced to worn Matrix rims which at some point will be replaced, hopefully with NOS Matrix rims.

Rode it today and the ride quality I knew of 36 years ago when I purchased my original, long gone 760, came flooding back. I had the biggest smile on my face!





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Old 06-18-21, 01:05 PM
  #309  
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Originally Posted by M1T View Post
So I went with a dark grey frame and fork...
Reminds of the pewter that Trek used on my 1980 710.
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Old 06-18-21, 03:28 PM
  #310  
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Originally Posted by M1T View Post
Very nice, lugs look great.
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Old 06-18-21, 08:24 PM
  #311  
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Gorgeous!
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Old 06-18-21, 09:53 PM
  #312  
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I’ve pretty much decided to go 7700/7800 mix on this. Although 7803 STI the first go round, I have downtubes in waiting should I decide to go that way.

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Old 07-04-21, 06:19 PM
  #313  
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Originally Posted by Mad Honk View Post
Well OldsCOOL,
I finally got my 1985 670 back from the powder coaters and here are a few pics. This one is a 57cm and really bums me out that I can not even straddle it today thanks to shrinking from age disease. It will be a great ride for the next owner as I am the original owner getting it direct from Trek when I was working in the biggest Trek dealer shop in the US. It got some paint damage in a house fire when it was in the garage so it got a new paint job and here it is now, It will need decals and a clear coat to protect them but will be like the team ones from 1985. I left a color ring on the head steerer tube to give an idea if the color for the bike in '85 which was a teal color with white decals.

my crappy camera wouldn't let me get a better picture than this

The detail of the methods of the painter's use of tapes to cover the essential pieces

the powder coaters clear coat the details of the serial numbers

They keep the chrome details the way they should be to stay period correct

The threads are protected in coating so the bike will be easy to re-assemble
Smiles, MH
Well folks it has now come to the time for me to part with this piece of history. One of only 1185 made and for only one year. This one is a good rider and was for a short time my daily driver. Since it is too tall for me to ride, I am putting it up for sale here on BF so it will go to a good home.
I am thinking about $250 plus shipping to a new owner. Will that be a fair price for a BF member? Thanks in advance, MH
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Old 07-04-21, 09:08 PM
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Originally Posted by Mad Honk View Post
Well folks it has now come to the time for me to part with this piece of history. One of only 1185 made and for only one year. This one is a good rider and was for a short time my daily driver. Since it is too tall for me to ride, I am putting it up for sale here on BF so it will go to a good home.
I am thinking about $250 plus shipping to a new owner. Will that be a fair price for a BF member? Thanks in advance, MH
That thing is gorgeous.
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Old 10-24-21, 10:32 AM
  #315  
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Bottom Bracket Cable Question (have a photo?)

My second 760 frame and fork just came back from the painter and the cable guide is gone. This is on the bottom of the bottom bracket and I believe it will be made of plastic. There are 2 screw holes appx. 35mm apart.

Can you have a look at your 760 (or any 1985 or so Trek) and either snap and post a photo, or just describe what it looks like? There are 2 'paths' (not sure what to call them) in the BB already for the cables to nest in, so maybe just a piece of square plastic with 2 holes drilled could do the trick Thx in advance.
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Old 10-24-21, 11:07 AM
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If I remember correctly on some models there was a thin aluminum plate bolted over the cables, on others the holes held screws that covered the cables in the channels and kept them in place. HTH, MH
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Old 10-24-21, 11:17 AM
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I have an '85 760 & an '84 770. Both have two small allen head screws with a small, thin flat washer over the grooves.
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Old 10-24-21, 11:39 AM
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The flat piece seems to be integral with the bottom bracket. It does not overlap the grooves.


Last edited by Hobbiano; 10-24-21 at 11:47 AM.
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Old 10-24-21, 05:04 PM
  #319  
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Originally Posted by Hobbiano View Post
The flat piece seems to be integral with the bottom bracket. It does not overlap the grooves.

It is integral with the rest of the shell; part of the casting. It was intended to be where the serial numbers would be stamped, but they streamlined that process with new equipment that rolled the numbers along the edge of the shell. The bolts and washers serve to hold the cables in the cast-in grooves if/when they are slack. No separate cable guide was used or necessary. IIRC, the original bolts were black oxide button heads.

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Old 10-26-21, 08:45 AM
  #320  
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Perfect and thanks for the replies. 2 screws (which he did give back to me) and small washers hold them in place. I'm set. Thx.
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Old 10-26-21, 10:02 AM
  #321  
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Originally Posted by M1T View Post
Perfect and thanks for the replies. 2 screws (which he did give back to me) and small washers hold them in place. I'm set. Thx.
Locktite might be in order to keep from loosing them.
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Old 11-22-21, 09:06 AM
  #322  
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The first 760 I had refinished was built for my son. I liked it so much I bought and re-finished another one, but in my size. I built the first one with more or less period correct parts. I built the new one up as a daily rider, so more modern drivetrain, etc. The 9 speed shifters work great and the bike feels light and lively and its fun to ride.

If you care to, you can view it here: https://www.flickr.com/photos/642939...h/51696229518/
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Old 11-22-21, 09:24 AM
  #323  
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