84' Trek 620 - 27" wheel question
Hello bikeforum.net friends!
I have been absent for a while dealing with graduation, moving, enrollment(here I come Bachelors :) ), surgery to remove a recurrent cyst from my perineum and helping care for a loved one with cancer. I missed you all, even if you didn't notice my absence. ;) Anywho... I am mostly healed up and getting back on the road. While I was unable to ride I have been dreaming big dreams of a nice steel frame touring bike for me. After several failed attempts to buy something off ebay (grrrrr) I had some luck. Saturday I came across a Trek 620 for sale. I went and looked at it and its in very nice shape so I bought it. I will post pictures tomorrow. It was listed as a 85' but some investigation today after I got it home tells me its an 84' which i am fine with. Happy with the purchase. I have come across something though that I need some help and advice on. It has 27" wheels and canti brakes, I am 295 lbs and will be dropping weight once back riding. I want to replace the wheels. The question is, if I have to stay with 27" wheels due to break clearance issues preventing a 700 conversion then, what is the strongest 27" rims I can get? Also any recommendations on who I should have build them? I will have tons more questions but for now I want to start with this. Thanks for any help. |
My experience is with a Schwinn Le Tour Luxe from about the same time as your Trek. I did the conversion and it was completely straight forward. I had trouble finding and getting cantis that would hit the rim correctly. It also made the steering very twitchy with narrower tires. That was mostly resolved with 35mm tires which was a little wider than I ultimately wanted. In the end I personally would like to go back to 27" tires on the bike. The main thing holding me back is spending the money to build the wheels that I would want for a $10 thrift store bike. I should also mention that I cold set the frame so that I could get 135mm hub in the back.
|
I have an '84 620. It's pretty much retired now, but I rode it a whole lot for 17 years and now it has a place of honor over the workbench. I loved that bike; riding it saw me thru a whole lot of growing up. I put 700's on it a few years in and had no problems using either the original DiaCompe cantis that it came with or the Mini-V's that came a little later. Have a look at how the cantis are sitting on the 27" rims now. If they're not near the bottom of their adjustment range then you shouldn't have any trouble making the switch to 700's. Or you could find somebody you know with a set of 700 wheels, and pop them onto your bike for a minute just to see how they'll fit.
|
I am currently fixing up an 85 Trek 620 I just picked up. I put on a pair of 700 wheels with almost no issue. The brakes needed a small adjustment, of course, but it went as smooth as I could hope for.
I think commuter wheels would be best with as many spokes as possible. A slightly wider rim would work best I think. Interestingly enough, the bike I got was spaced for 130 mm in the rear dropouts. I don't know if this is stock or someone cold set the frame, but it works very well. |
6 Attachment(s)
Thanks for the replies. I will likely ride these for a bit until I am ready o upgrade the drive train then I will update the wheels to 700. I will likely go for something like the Mavic A719 its a touring rim.
Here are the pics I promised. The first one is when i first got the bike and the last one is after removing the light and solar computer plus I changed the bar tape. |
What are the wheels on the bike now ?
If the 27 inch wheels were of decent quality, and Trek used very nice wheels oin the 620's, and were built 36/3 as was typical of that era (and for that model) they might hold up better then you think. I would get a good wheel builder to check them over for you. The Mavic A719 is one of, if not my favourite rim for touring, commuting, and for anyone who wants a simply bombproof wheel and you can of course get them in a 40 spoke (tandem) version although most folks don't need a wheel this strong. |
3 Attachment(s)
The wheels on there are stock I believe.
|
I noticed you were gone. It's good to have you back in the stable with the other Clydes. :)
|
Originally Posted by The Historian
(Post 9587727)
I noticed you were gone. It's good to have you back in the stable with the other Clydes. :)
:thumb: |
Welcome back! And you even bring us lovely new/old bike pr0n. Sweet looking ride and I love the color. Enjoy! :thumb:
|
wOOdie - The front wheel is nice but that rear is a Maillard Helicomatic... this in itself is a good reason to get a nice set of 700c wheels built as the Helicomatic is notorious for spoke breakage on the drive side when subjected to typical touring loads.
The design was brilliant in that it allowed for easy cassette removal with pocket sized Helicomatic tool but flawed because the offset of the hub causes drive side spoke breakage ,the bearing support is also weaker on the drive side and causes premature wear, and replacement parts are not readily available. http://www.sheldonbrown.com/velos.html#helicomatic |
Nice bike, but uhhhhh you might be in the wrong place. This is "dot net" not "dot com"!:D
|
Originally Posted by Mr. Beanz
(Post 9589772)
Nice bike, but uhhhhh you might be in the wrong place. This is "dot net" not "dot com"!:D
Just got back from a 11.5 mile ride. I am amazed at how quickly my fitness level dropped in 3.5 weeks. Day before my surgery I did 28.4 miles avg of 17mph today I did 11.5 and avg 14.2 mph. O well, blame it on the wind. ;) I also took the Trek 620 for a little spin, wow what a difference from my Sequoia Elite. Non-indexed stem shift and a 6 speed freewheel vs 9 speed sti sure shows how far bike technology has come. I felt like I was back in high school again riding the Trek. I guess I will install this new Ultegra SL group on the Sequoia and move the Tiagra over to the Trek and update the wheels while I am at it. I will make sure to clean, wrap and box all the original equipment off the Trek so I can always return her to stock. I'm sure I will catch some grief from the traditionalists for the upgrade, but I figure as long as I don't mess with the frame too much I can always return her to stock when I am ready to part ways with her. Thanks for the comments and help. |
Are you sure it's a 6-speed rear end, not a 5-speed? I had an '85 Trek 720 and it had a 5-speed. I upgraded the rear wheel in 2007 because the freewheel was making noise and I couldn't get parts. Had a 7-speed cassette put on some new 27" 36-spoke wheels - built by my LBS. They had to spread the rear fork because the 7-speed wouldn't fit in the factory spacing. They also couldn't find a axle that short. They did offer to make one, but I was set on the 7-speed. I really loved that bike. It was stolen last October.
The 27" tires are harder to come by than 700c, but Performanc still has them. If you change to 700c you may have to have the rear fork spread. Good luck! |
Yes it is a 6-speed freewheel. I even researched it by looking at the original brochures at http://www.vintage-trek.com/TrekBrochures.htm
Oddly enough it shows the 84' 620 and 720 had 6-speed freewheels and for some reason in 85' they came equipped with 5-speed freewheels. Although it seems backwards from everything I can see they went back to 5-speed freewheels in 85'. Thanks for your inquiry, it lead to me learning something odd about Trek. Also, yes I am aware that if I go to 700's I will need to cold set my frame to 130. I read up on that also. Have a great one. |
surgery to remove a recurrent cyst from my perineum:twitchy::twitchy::twitchy::twitchy::twitchy:
I can't get past that part. |
Steel frame? Gina's goat an 84 Bianchi. A buddy of mine said steel would spread enough to slip the 7 speed in no problem. Others had said we needed coldset. I guess not cause it works perfectly,
Those old steel bikes are nice. Gina says it's as smooth as her carbon fiber roadie, Just a bit heavier on a 40+ mile ride. 84 Bianchi http://i98.photobucket.com/albums/l2...me/012409E.jpg from DT shifters 6 speed freewheel to a 7 speed, no mods. Added RSX 7 speed brifters, only 7 speed around at the time. http://i98.photobucket.com/albums/l2...me/012409A.jpg |
Originally Posted by bigboybiker
(Post 9591440)
surgery to remove a recurrent cyst from my perineum:twitchy::twitchy::twitchy::twitchy::twitchy:
I can't get past that part. Long story short, I now will not ride unless I have proper cycling shorts. The cyst developed from riding in gym shorts and underwear instead of proper gear, even though I promptly showered after each ride. Lesson learned. |
I've been rubbing myself raw even with good shorts. Just another reason for me to look for a recumbent.
|
I am riding the same bike. My Helicomatic rear hub went out almost a year ago - had it replaced. Yes, it is a 6-speed hub.
|
Velocity makes a very nice 27" wheelset, and you can get them made with DT-Swiss spokes and a Shimano hub from various online retailers. To be honest with you, I got a NOS 27" low-end Weinmann wheelset, and it's held up perfectly... a lot better than my old steel wheels. Pairs nicely with the Conti Gatorskins.
It's probably cheaper to convert to 700c, but if you like the look and feel of the bigger wheels, there's no other reason to switch. There are still a lot of tire options, too. |
Originally Posted by w00die
(Post 9591395)
Yes it is a 6-speed freewheel. I even researched it by looking at the original brochures at http://www.vintage-trek.com/TrekBrochures.htm
Oddly enough it shows the 84' 620 and 720 had 6-speed freewheels and for some reason in 85' they came equipped with 5-speed freewheels. Although it seems backwards from everything I can see they went back to 5-speed freewheels in 85'. Thanks for your inquiry, it lead to me learning something odd about Trek. Also, yes I am aware that if I go to 700's I will need to cold set my frame to 130. I read up on that also. Have a great one. |
w00die, have you measured your rear dropout spacing? I've found a couple other sources that claim the 85's were spaced for 130 as was mine.
|
I had that cyst. ick. it sucked.
|
All times are GMT -6. The time now is 06:55 PM. |
Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.