Trek 770 - build list - does this make sense?

[joep2517]

This is probably a dumb question, but I want to make sure I'm not forgetting something with this build.

I have a 1985 Trek 770 and I want to bring somewhat current, but keep the vintage look. Downtube shifting stays, and I'm thinking about going with:

Dura Ace 7700 – Crankest
Dura Ace 7700 – BB
Dura Ace 7700 – FD
Dura Ace 7800 – RD
Dura Ace 7800/7900 – DT Shifters
Dura Ace 7800 – chain
Dura Ace 7800 – F/R brakes
Dura Ace 7400 – brake levers
Dura Ace 7800 – Cassette

Is there anything I'm missing with this build list?

Thanks for you help!

Joe

[speedevil]

The DA 7700 crankset won't fit a small ring with fewer than 38 teeth - and that 38 tooth ring isn't DA. You can get a 50t DA ring, which I did, and I'm running the 50-39t crankset.

I went with an Ultegra BB, rather than the DA, partially for $$ reasons, but the Ultegra BB will last pretty much forever with no maintenance.

I went with an Ultegra 12-30 cassette, but with the short cage 7800 RD I used a Roadlink to get the clearance for the 30t cog. Shifting is fine, and I'm using DA 7800 levers.

My DA build was my first Shimano build, all others were Campagnolo. I used DA7400 hubs, and swapped the freehub for a 7403 so that I could run a 10s cassette. The 7403 freehubs are basically unobtanium, but I lucked out and picked up a 7403 hubset. My first set of hubs were basically NOS, so I swapped the freehub from the donor hub onto my hub.

Good luck with the build.

[54ny77]

SWEET! The pink frame, Reynolds 531?

[old_fat_and_slow]

This is probably a dumb question, but I want to make sure I'm not forgetting something with this build.

...snippage...

Is there anything I'm missing with this build list?

Joe

stem
bars/tape
seatpost
saddle
hubs/rims/wheels/tires/skewers
cables/housings

[csm]

SWEET! The pink frame, Reynolds 531?



Wasn't that all super record? Any pics?


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[rccardr]

If you are talking about true 7400, non-aero levers, they won't work very well with later calipers. If you mean 7402 non-aero brake levers, you're good.

[joep2517]

The DA 7700 crankset won't fit a small ring with fewer than 38 teeth - and that 38 tooth ring isn't DA. You can get a 50t DA ring, which I did, and I'm running the 50-39t crankset.

I went with an Ultegra BB, rather than the DA, partially for $$ reasons, but the Ultegra BB will last pretty much forever with no maintenance.

I went with an Ultegra 12-30 cassette, but with the short cage 7800 RD I used a Roadlink to get the clearance for the 30t cog. Shifting is fine, and I'm using DA 7800 levers.

My DA build was my first Shimano build, all others were Campagnolo. I used DA7400 hubs, and swapped the freehub for a 7403 so that I could run a 10s cassette. The 7403 freehubs are basically unobtanium, but I lucked out and picked up a 7403 hubset. My first set of hubs were basically NOS, so I swapped the freehub from the donor hub onto my hub.

Good luck with the build.

Speedevil thanks that’s what I looking for. I’m trying to figure out the major components and this helps.

[joep2517]

SWEET! The pink frame, Reynolds 531?

Wasn't that all super record? Any pics?


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54ny77 - yeah the pink frame. I believe the actual frame is 531c tubing.

csm - when I bought the bike it was more of a frankenstein build. Upgrading to current Campy 10 speed would be difficult.

[joep2517]

If you are talking about true 7400, non-aero levers, they won't work very well with later calipers. If you mean 7402 non-aero brake levers, you're good.

With your advice rccardr, I’m good... now! Thanks.

[54ny77]

yes it was, it was the cream of the crop, stunning bike. "investment cast" lugs (i can remember the marketing-speak from those days), it was just so so nice. buddy of mine had one, who wrenched at a local shop.

i was a young lad at the time and saved all my pennies from working various jobs, was able to swing a purchase of a trek 560 of the same era.

Wasn't that all super record? Any pics?


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[Rada]

54ny77 - yeah the pink frame. I believe the actual frame is 531c tubing.

csm - when I bought the bike it was more of a frankenstein build. Upgrading to current Campy 10 speed would be difficult.

The 600 series was 531C, main triangle 531 with stays and fork 502 from what I remember. 700 series is all 531.