SJX426 

FINALLY! I have had this hanging in two garages since purchasing it 6 years ago! It was about $150 with a number of record and super record parts - hubs, post, FD, RD, with 105 calipers, levers. I thought it was a good deal at the time. Still do. Frame is a mess.

Oh and yes there was a Giant unicrown fork on it. I found a 1985 bent fork on the bay a year later. I straightened it out after giving up on buying a Tange aftermarket fork. Offset is 38 for this model. It was like finding a needle in the haystack! See Bent fork with 531c tubing - Reset to proper dimensions? - Bike Forums

The stem is one of those rare SR stems with a hollow stem and Ti parts. I understand they were the supplier to Suntour for the Superbe Pro stem. It is waaaay to long for me on this 23" frame. TT is 22.75. In fact the frame size is a little on the short side, like the Colnago.

As purchased:
1984 Trek 760 60cm as acquired on Flickr

I have decided to out fit it with Superbe Pro as much as I can. What I don't have from Suntour is a head set, stem and post. The BB is a Superbe, not Pro. Superbe Pro parts include index DT shifters and RD to go with them, FD, crank set (ether 144 or 130 bcd), hubs, and brake set. Suntour ultra 6 with chain will likely be used. I would like to go 7v with the 126 rear, and may still. Need to take inventory to see if I have a Suntour 7 speed freewheel.
Post will likely be American Classic
Headset will be either old Record, new Record or older Super Record.

Today, actually:
P1040435 on Flickr
Rims will likely be Mavic 330's.

The reason for building it up is to see how well I can make it fit and to ride it before spending a lot of time cleaning up the aesthetics.

This could go reasonably quick. The only hitch is that the intended wheels are not built and spokes are needed to do that. I do have a set of Mavic 501/330 configuration I will use instead. They are a fine set of wheels that came with the Colnago. They work really well.

I may pull tires from the stash even though I have settled on Vittoria G+ on the Italians.

Stem and handlebar will likely be Cinelli XA or 1R with 64-40 Giro d"Italia.

First up is the HS. My thinking is to go with the old Super Record. But first I need to clean the threads on the BB shell.

RiddleOfSteel

Great to hear that it's getting a lot closer to being on the road again! Do you have a decent pair of wheels to do a trial build and see how it rides? I like the Superbe Pro build idea. Headset, stem, and seatpost are nih on impossible to find in SP form. While they would be super cool to find, I wouldn't hold the build up because of them. A SR headset will be plenty fitting on a 760, and since that's one of the more involved and semi-permanent components to install on a bike, it'll give you good looks and operation while you build it up and ride it. I like Trek's low-offset forks as they make for rock steady and laser straight tracking while riding (due to the higher trail).

SJX426 

@RiddleOfSteel - Thanks for the response! I had the same thoughts wrt rare Superbe Pro parts. I did find a number of posts on the bay but at ridiculous prices.

Initial wheel set will be Mavic 501 with GL 330 running Gatorskins. I think I have a couple of 7v freewheels.

IIRC, Superbe Pro was the build for this frame set originally. A variation with Campagnolo was the 770, I think.

Head set installed, SR, and Superbe BB too. I think I have a bar and stem assembled to slide in the steerer along with a post and saddle.

RiddleOfSteel

You are correct on the original specification of the 760. The 770 was indeed Super Record, as was the 170.

Interestingly, the spec'd headset of the 760 is a Stronglight A9! Much cheaper and more available than a Superbe Pro unit, of which I've somehow seen one of. As a former owner of both Superbe and Superbe Pro most-of-a-groupset's, I roll my eyes the most at Superbe Pro prices. I love the stuff, specifically the late-era Accushift Plus stuff. Gorgeous looks to go along with great function. But yeah, at the prices that they go for, it makes you just throw up your hands in disgust and say, "Fine! I'll just save a ton of money and buy 7400-era Dura-Ace!" And then I say, "Buy 7402 cranks and brake levers, 7800 front and rear derailleurs, 7700 (9s) or 7900 (10s) down tube shifters, a cartridge bottom bracket of your choosing (any rank above BB-UN55), and either 7403, 7700, or 7800 brake calipers for a 'Greatest Hits' of Dura-Ace beauty, capability, and function!" ...but seriously...

SJX426 

I pulled a 740x group set off my Pinarello and it is just sitting in a box. The down side is the rear hub, which has pitting in the cone. Try finding a cone for an 8 speed DA hub! As bad as looking for a Helicomatic cone! The fix is to buy another hub for parts.. Event he 7speed variant is not the same cone.
But that does give pause to consider the DA group for another frame hanging on the hook.

RD, fd, stem, HB, post, saddle and calipers on. Pics to follow.

Lot of interest in this thread! I am doing it for my own record.
The build is going quickly and without a lot of finish. The adjustments will come after it is assembled. Admittedly, some parts are not as clean as I would like, but clean enough for a trial build and ride. The quality of the following pictures reflects the quality of detail in the build!
As it sits right now.
P1040436 on Flickr

Front brake caliper. Note the adjustment barrels are oriented to be kept with the caliper.
P1040437 on Flickr

Front derailleur. Curious how pictures bring out the flaws! Look at that messy chain stay! Ugh!
P1040438 on Flickr

Rear derailleur. it was a small challenge to mount this. The mounting bolt stopped abruptly. I ended up taking the DIY hanger adjustiment tool apart to run the long threads through the DO. A lot of crud came out, maybe residual paint from the the rattle canning. Or dirt!
P1040439 on Flickr

Rear brake caliper. Great lines on these caliper. Yes they are the hidden spring caliper set with matching levers.
P1040440 on Flickr

Handlebar and stem. Typical Cinelli parts. Stem is 115. May need to change. There were a couple to choose from and these needed the most cleaning to go along with all the other parts! I have determined that this bike will be used to set up different length stems as a base for adjusting the other bikes, which I think have stems too long.
P1040441 on Flickr

Saddle and post. The stash is out of black Brooks! Plenty of American Classic posts. Boring, right?
P1040442 on Flickr

Index shifters. I really like these and have another pair. They were set up on my daughters Pinarello for a week or so and worked really well. Looked on the bay for another pair but didn't see any listed. Velobase appears to be broken or doesn't work with Edge. Don't know if these are Pro's or not.
P1040443 on Flickr

I would have added the brake levers but ran into a problem with the sleeve not sliding onto the HB. I am trying to figure out how to expand them with the tools I have.

Wildwood 

I am a proponent of build 'em and ride.
If they inspire, make improvements.
I have come to this position thru experience.

Ex Pres 

Shifter on VB - says applicable to Sprint/Cyclone/Superbe Pro / SL-IP00B
LINK

SJX426 

Managed to get the mounting bands expanded enough to mount on the handle bars. As you may know, the band is really a U shape with the ends staked to the mounting post. Tightening the base draws the band to the base creating almost a pair like shape. Consequently, the transition areas get drawn to the bar as a result of the shape of the base.

The "fix" was to find a socket that was close to the inside diameter of the band and mount the band on it. Jaws of a vice were opened enough to clear the band with the deep socket straddling the opening. A hammer was used on the transition areas to shape them back to curves increasing the diameter of the band..
They are tough bands! managed to get them just big enough to slide on the bar.

Its been so long since I looked at these levers that I didn't realize they are aero!
P1040447 on Flickr

Added cranks and mocked up a chain. Need to find a link and test for length.
P1040451 on FlickrP1040449 on Flickr

Drive train including an IRD that may have a sprocket too big for the RD. We will find out.
P1040452 on Flickr

The BB is asymmetrical. It was installed with the longer section on the DS. Chain line looks off so will reverse the spindle.

Cabling will be white for contrast Other options in the bin are black and yellow. Black may be a better option.

Decided to weigh it.
P1040453 on Flickr
P1040454 on Flickr

Weight wise, only need cables, pedals and bar tape.

Ferrouscious 

barrel adjuster on brake is supposed to be in the regular place (on top), not under the caliper arm. You'll gouge the brake the first time you apply the brakes.

SJX426 

@Ferrouscious - as noted above, they are placed that way so they won't be lost. Installation of cable will return to the proper position. I don't like using tape to keep in place without a cable.

Oh and the plug for the right lever was found and placed.

SJX426 

Black housing was the choice for installation.

Today the rear brake cable and both shifter cables were connected. The front still needs the housing shortened. None of the cables are cut to length yet either. Brake housings are taped to the HB.
Brake cable housing will be left a little on the long side until a proper stem length is determined.
I was lucky to find a step down ferule and a RD housing the right size and length. Rear brake housing was a bit long but workable.
Remainder of things to do include:

• Reverse the spindle
• Front brake housing to be shortened
• Cables trimmed
• Glue rear tire on rim and check front for being glued or not.
• Power Link installed once it shows up - Didn't have one for the 8V chain.
• Ordered Keo pedals but delivery isn't until last half of Dec.
• Check saddle inventory.

trainman999

SJX426 can you provide a pict of the cone you need, I think I have drive or non cone and a non drive side cup

SJX426 

Had a diversion to the build due to the incompatibility of the BB and crank chosen. See this thread, Suntour Superbe Bottom Bracket - tell us what you know

To get the chain line needed, I had to use a different crank set. I happen to have three Superbe Pro cranksets. Ignorance on my part led to having two generations, the oldest with 144 BCD and the second with 130 BCD. The latter was chosen above because it had 172.5 length cranks, which I have standardized on with most of my fleet. The other good thing about it was the condition and having 52 T large ring.

The newer crankset requires a 109 length spindle that is symmetrical. The older uses a 113 asymmetrical spindle, which was installed. So the 144BCD crank was installed and it has 170 length cranks and a 53 tooth large ring.

A 109 BB was found and ordered, not a Superbe but a Sprint BB.

Thanks to @jiangshi and @LittleGinseng for their help on the other thread so this one can get back on track.

SJX426 

109 BB showed up today and was installed. Works perfect. Right length crank arms and right chain rings!

Waiting for the chain master links to show up then we can take it for a ride!

OldsCOOL

Good to see your 760 getting attention! I recall something of your fork adventure. Let us know how you do. The 760’s are fine bikes!

SJX426 

@OldsCOOL - Almost ready for the initial ride! Waiting for pedals. Chain links showed up today too. Chain line is good, shifting is excellent even with a 28t with the B screw all the way in! Proof is in the first ride. Oh the tires need to be glued on the rims.

Yes the fork was a fun experience! looks good and straight. It is appealing to maybe sand the frame down, protect the decals and paint it black to fix the chips and scrapes.

OldsCOOL

I would love to be next to you on mine. The full 531c and tubulars are a natural. Amazing bikes. Race geo makes it snappy, lightweight (mine is 20.25#) makes it responsive. Enjoy!

SJX426 

Still waiting for the pedals. Should be here sometime between the 18th and Jan.
Glued the rear tire on this morning.
Attached some platforms just to ride it up and down the street. Very nice! Had to really reef down on the 1R clamp to keep the HB from rotating and the RD cable needed adjustment after a couple of loops. The single pivot Superbe Pro calipers are outstanding in performance.
I think the rear rim needs adjusting as there feels like there is a bump in it.

Stem is a bit long at 115. Should be 100. May leave it on until a couple of longer rides are taken.

Rear block is IRD 13-28 7V. RD handles it just fine.

Here it is as ridden today.
P1040474 on Flickr

Wheels are Mavic 501 with GL330 rims and 22mm Gatorskins.

20lbs 15oz.

SJX426 

Added two bottle cages and swapped the pedals in the above picture for all black Keo's. New weight is 20lbs 11oz.

SJX426 

In the process of taking advantage of @Mad Honk offer of Trek 760 decals, I discovered that the Vintage Trek site identified the 760 as having 531 P tubes. The sticker on the bike is 531c.
P1040544 on Flick

Clearly the bike was rattle canned black. The person who sprayed it covered some of the decals including the one shown above.

Is there any explanation for this?

JohnDThompson 

Not all 760s were 531 Professional, especially early production and larger frame sizes are likely to be standard 531.

SJX426 

@JohnDThompson - Thanks for the explanation!
@trainman999 I have not forgotten to get back to you. I am using the cone and will have to disassemble the hub. It is on my Pinarello.

OldsCOOL

Mine has 531c stickers. It’s a 52cm with 12/84 braze date.

Hobbiano 

I have three 760's (only one complete) and one 770 frame. 1984 &1985. One 52cm & three 54cm. All have 531c stickers.