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My take on an old trek 620

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My take on an old trek 620

Old 10-06-21, 06:04 PM
  #1  
52telecaster
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My take on an old trek 620

I bought this because it seemed like a really versatile platform. Turns out it's a wonderful bike. I went 650b and had to use a 750 center pull to reach in the back. A tektro 559 is enough in front. The 126mm rear hub has a 14-36 cassette. Hand selected from tons of crap in my basment. The derailleurs are suntour as are the bar ends. The crank is Shimano deore from about 1980. It allows a lower seatpost height. The fenders are longboards.

I had almost forgot about this bike then I needed a ride quickly this morning and it was the easiest one to get out the door. Damn is it a nice ride!

Velocity 32 hole rims

Soma rack and mirracyl mirror

Old Dyno tail light with a modern stand light led bulb.
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Old 10-06-21, 07:38 PM
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Nice job. Looks like it all came together very nicely.
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Old 10-07-21, 06:57 AM
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Tell me about the wheels and GKs, please. A touring rig is being picked up this weekend, and another shiny thing. Stay tuned.
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Old 10-07-21, 07:04 AM
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Old Treks are great bikes. I have a 1982 Trek 720 that I want to turn into a 650b bike but first I need to build some wheels.
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Old 10-07-21, 10:24 AM
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Originally Posted by ascherer View Post
Tell me about the wheels and GKs, please. A touring rig is being picked up this weekend, and another shiny thing. Stay tuned.
Velocity a23 32 hole rims front hub is a Panasonic dynamo, rear is a tricolor Shimano. Tires are gk file tread 38mm. Cassette is supposed to be 7 speed. I run 9 speed spacing with 8 cogs. 14-16-18-21-24-28-32-36.
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Old 10-07-21, 06:37 PM
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C'mon, 52telecaster , take the plunge! I liked my '83 620 as a 700c bike, but I LOVE it as a dedicated 650B bike.

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Old 10-07-21, 07:39 PM
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Very nice build.
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Old 10-07-21, 10:01 PM
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Looks real nice. I hope my Witcomb works as well.
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Old 10-08-21, 01:10 AM
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Originally Posted by bear_a_bug View Post
C'mon, 52telecaster , take the plunge! I liked my '83 620 as a 700c bike, but I LOVE it as a dedicated 650B bike.

I think I would like it either way but 650b is a gas and so comfortable.
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Old 10-08-21, 12:02 PM
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Originally Posted by bear_a_bug View Post
C'mon, 52telecaster , take the plunge! I liked my '83 620 as a 700c bike, but I LOVE it as a dedicated 650B bike.

Nice paint choice... are the centerpulls Mafac raids?
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Old 10-08-21, 12:13 PM
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Y'all are really messing with my head as I ponder my upcoming 640 build. I'm in love with all of these. First thing I need to figure out is if I go drop bars -- ctak yours is a looker -- or upright, cause I'm digging 52telecaster 's too.
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Old 10-08-21, 12:40 PM
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Originally Posted by ctak View Post
Nice paint choice... are the centerpulls Mafac raids?
Yep, mods courtesy of gugie.
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Old 10-08-21, 01:10 PM
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Have you been happy with the Mafacs in wet conditions?
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Old 10-08-21, 01:17 PM
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Originally Posted by ctak View Post
Have you been happy with the Mafacs in wet conditions?
My rear is a diacomp with continental brake pads (cool stop) they work pretty good. Of course the tektro dual pivot in font does most of the work.
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Old 10-08-21, 01:20 PM
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Originally Posted by denaffen View Post
Y'all are really messing with my head as I ponder my upcoming 640 build. I'm in love with all of these. First thing I need to figure out is if I go drop bars -- ctak yours is a looker -- or upright, cause I'm digging 52telecaster 's too.
The porteur bars are because my neck can't do drops anymore but it is a Gass. I love riding upright for the visibility.
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Old 10-08-21, 01:23 PM
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Originally Posted by 52telecaster View Post
My rear is a diacomp with continental brake pads (cool stop) they work pretty good. Of course the tektro dual pivot in font does most of the work.
Originally Posted by ctak View Post
Have you been happy with the Mafacs in wet conditions?
Sorry, meant that question for bear_a_bug
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Old 10-08-21, 10:05 PM
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Originally Posted by ctak View Post
Sorry, meant that question for bear_a_bug
I understood but thought another data point on a long reach center pull wouldn't hurt. They can be quite effective. The rear reach on that 620 though is really long. The 75mm reach diacomp is bottomed out. Since it's a rear brake it's decent enough. The front reach is much shorter.
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