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Independence Day Trek 720 Build

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Independence Day Trek 720 Build

Old 07-04-20, 12:05 PM
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Sjtaylor
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Independence Day Trek 720 Build

I picked today to build my newly acquired 720. The 720 came to me kind of tired so I知 doing a frame up rebuild with some modernization. The donor bike is a 2013 Trek 520.

If there is an interest I値l post some work in progress photos during the day.

So far I cold set the dropouts to 135mm and prepped the frame for reassembly. No frame restoration, maybe some fingernail polish here or there.

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Old 07-04-20, 01:02 PM
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mxred91
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Nice color on the frame. I am interested to see how you progress. I really like the old Trek bikes, mine is a 1994 930 I have had since new. Converted to a commuter in 2012.
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Old 07-04-20, 02:01 PM
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deux jambes 
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I agree with the member above. That痴 a very nice paint color. I don稚 like red for bikes so much, but that shade is in the right spot on the pallet for my tastes. Very close to a resprayed Super Course I once had. Works great for a Trek with the 澱rass headbadge.

And you have interest from me if you wanna go ahead with progress posts. I always enjoy watching a great steel lugged bike develop from the frame up.
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Old 07-04-20, 02:46 PM
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Originally Posted by Sjtaylor View Post
I picked today to build my newly acquired 720. The 720 came to me kind of tired so I知 doing a frame up rebuild with some modernization. The donor bike is a 2013 Trek 520.

If there is an interest I値l post some work in progress photos during the day.

So far I cold set the dropouts to 135mm and prepped the frame for reassembly. No frame restoration, maybe some fingernail polish here or there.


Outboard bearing bottom bracket. Amazing compatibility after almost forty years.
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Old 07-04-20, 04:11 PM
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Wanted to use these Avid brakes on the build. They work great on the back but the brake pivot lugs are too close together in the front. Going to cleanup the old brakes and reinstall them.

Back brakes will fit good.

Front brakes. Id need a real skinny rim
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Old 07-04-20, 04:34 PM
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Originally Posted by Sjtaylor View Post
Wanted to use these Avid brakes on the build. They work great on the back but the brake pivot lugs are too close together in the front. Going to cleanup the old brakes and reinstall them.

Back brakes will fit good.

Front brakes. Id need a real skinny rim
Yes, the 620s and 720s with canti brakes had the posts very close together - 60 to 65mm which means you are limited to certain brake options. Fortunately, the original Shimano XTs are very nice brakes and polish-up nicely with a buffing drill bit and some polishing compound. Put some unthreaded Kool Stop pads on them and you're good to go! If you use the Kool Stops with the longer pads (MTB) you may need to trim them a bit for the front pads to clear the forks.

Lots of threads on BF re: brakes on the 620s and 720s - including this one - especially post #18 and beyond. 700c on my Trek 620 - will this work? (pics)

Photo courtesy of The Golden Boy
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Old 07-04-20, 06:11 PM
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I put the original brake back on the front. I wanted to use the newer drop bars and they have Tektro levers with a longer throw. Have to see how that will work.
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Old 07-05-20, 01:01 AM
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Just before midnight the build is done but the bar tape. I want to verify cable routing before I wrap.

Here is a couple of end of day photos. It was fun.

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Old 07-05-20, 04:03 PM
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This build is complete except for a pair of schwalbe marathon plus tires and the fenders and racks that came with the bike.

This frame is one size smaller than I normally ride. Need to see how get along with it.

Thanks To those that followed this. The big question is how to continue doing these fun

build projects with collecting a garage full of bikes. I don't want to part with them once they're done.
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Old 07-05-20, 08:40 PM
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Nice work! Looks like a comfortable cockpit ready for many miles. I just finished up an '85 Trek 720 in real bad shape, no racks left. Put it back mostly stock.

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Old 07-05-20, 09:55 PM
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Originally Posted by BocaJr View Post
Nice work! Looks like a comfortable cockpit ready for many miles. I just finished up an '85 Trek 720 in real bad shape, no racks left. Put it back mostly stock.

That thing was in 途eal bad shape? We must see something before photos!
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Old 07-06-20, 09:42 AM
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I don't want to hijack Sjtaylor's thread, but here's a few pics. Stuck seatpost, stuck BB cups, bent derailleur hanger and someone bludgeoned the NDS chain stay and seat tube, perhaps someone attempted to steal it once???



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Old 07-06-20, 03:24 PM
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Originally Posted by BocaJr View Post
I just finished up an '85 Trek 720 in real bad shape, no racks left. Put it back mostly stock.
Didn't you have one of the 'taupe' colored 720s?
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Old 07-06-20, 06:59 PM
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Originally Posted by The Golden Boy View Post
Didn't you have one of the 'taupe' colored 720s?
Yeah, I still have the '83 720. I just couldn't pass up all this fun for $40! Another case of a cheap project costing in the long run. LOL
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