1984 Trek 460
09-08-17, 06:47 AM
#1
Senior Member
Thread Starter
Join Date: Jul 2015
Posts: 171
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 75 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
1984 Trek 460
I just purchased a 1984 Trek 460 for what I think is a ok price and I want to ride it for now as is but in the near future I want to try to upgrade from the 6 speed to 10 speed as I have most of the parts needed for this conversion.
I would like to keep the vintage look though and want to keep the friction shifters and the squaretaper crankset if possible.
I have read that friction shifters (not indexed) could possibly work for a 10 speed?
I just want to replace the chainrings on the crankset sound reasonable?
BTW I'm beginning to believe the steel is real cult this thing rides amazing.
I would like to keep the vintage look though and want to keep the friction shifters and the squaretaper crankset if possible.
I have read that friction shifters (not indexed) could possibly work for a 10 speed?
I just want to replace the chainrings on the crankset sound reasonable?
BTW I'm beginning to believe the steel is real cult this thing rides amazing.
09-08-17, 08:51 AM
#2
Senior Member
I have a 1984 Trek 660 converted to 11 speed, but using modern Shimano 105 integrated shifters plus the rest of the full 105 group. It does ride really nice and gives me something very different than my carbon fiber disc brake road bike while still looking vintage enough for me (other than the black crankset which I will likely swap for something silver one day).
Back to your project, though, what you want to do is reasonable. You can run your shifters in friction mode and just be very careful with shifting. If you get tired of that, I believe there are indexed 10 speed downtube shifters available still. You'll have to be very careful sourcing chainrings to make sure the end result is something that will shift properly and fit. More than likely you have a 130mm BCD crank which will only fit down a 38T small ring. It may be quite expensive if you need to use something like TA Specialties rings. You may even find that your current chainrings work ok with only adding a 10 speed front derailleur. I wouldn't try running an old 6 speed front derailleur with a narrow 10 speed chain.
For the rear wheel, do you understand that your current dropouts are spaced at 126mm so you'll need to do a little spreading every time you insert a modern 130mm spaced rear wheel? It really is no big deal and avoids the need to cold set the frame. But it is something to be aware of.
Back to your project, though, what you want to do is reasonable. You can run your shifters in friction mode and just be very careful with shifting. If you get tired of that, I believe there are indexed 10 speed downtube shifters available still. You'll have to be very careful sourcing chainrings to make sure the end result is something that will shift properly and fit. More than likely you have a 130mm BCD crank which will only fit down a 38T small ring. It may be quite expensive if you need to use something like TA Specialties rings. You may even find that your current chainrings work ok with only adding a 10 speed front derailleur. I wouldn't try running an old 6 speed front derailleur with a narrow 10 speed chain.
For the rear wheel, do you understand that your current dropouts are spaced at 126mm so you'll need to do a little spreading every time you insert a modern 130mm spaced rear wheel? It really is no big deal and avoids the need to cold set the frame. But it is something to be aware of.
09-08-17, 06:45 PM
#3
Senior Member
Thread Starter
Join Date: Jul 2015
Posts: 171
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 75 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I have a 1984 Trek 660 converted to 11 speed, but using modern Shimano 105 integrated shifters plus the rest of the full 105 group. It does ride really nice and gives me something very different than my carbon fiber disc brake road bike while still looking vintage enough for me (other than the black crankset which I will likely swap for something silver one day).
Back to your project, though, what you want to do is reasonable. You can run your shifters in friction mode and just be very careful with shifting. If you get tired of that, I believe there are indexed 10 speed downtube shifters available still. You'll have to be very careful sourcing chainrings to make sure the end result is something that will shift properly and fit. More than likely you have a 130mm BCD crank which will only fit down a 38T small ring. It may be quite expensive if you need to use something like TA Specialties rings. You may even find that your current chainrings work ok with only adding a 10 speed front derailleur. I wouldn't try running an old 6 speed front derailleur with a narrow 10 speed chain.
For the rear wheel, do you understand that your current dropouts are spaced at 126mm so you'll need to do a little spreading every time you insert a modern 130mm spaced rear wheel? It really is no big deal and avoids the need to cold set the frame. But it is something to be aware of.
Back to your project, though, what you want to do is reasonable. You can run your shifters in friction mode and just be very careful with shifting. If you get tired of that, I believe there are indexed 10 speed downtube shifters available still. You'll have to be very careful sourcing chainrings to make sure the end result is something that will shift properly and fit. More than likely you have a 130mm BCD crank which will only fit down a 38T small ring. It may be quite expensive if you need to use something like TA Specialties rings. You may even find that your current chainrings work ok with only adding a 10 speed front derailleur. I wouldn't try running an old 6 speed front derailleur with a narrow 10 speed chain.
For the rear wheel, do you understand that your current dropouts are spaced at 126mm so you'll need to do a little spreading every time you insert a modern 130mm spaced rear wheel? It really is no big deal and avoids the need to cold set the frame. But it is something to be aware of.
well the deed is done. converted to 10 speed and it was fairly painless. used the crankset that was on the bike 6 speed and it works perfectly( Who Knew?). didn't have to cold set the rear dropouts the hub fit with very little forcing really almost no forcing. 10 speed chain 10 speed front and rear derauillers and kept the friction shifters which have plenty of travel to shift all 10 gears.
couldn't be happier with the way it went together
09-08-17, 06:59 PM
#4
Senior Member
Excellent! Pics?
09-08-17, 07:37 PM
#5
Senior Member
Thread Starter
Join Date: Jul 2015
Posts: 171
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 75 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
waiting to get my bar tape then yes I will post some pics.
need to get some clipless pedals 9/16 spindle and right now I have my Adamo seat on it but I will find something a little lighter but it is at 20.6 lbs which rivals a lot of the carbon bikes that I ride with.
this thing corners like it is on rails. I can't wait to get it out on the road
09-09-17, 09:04 AM
#6
Full Member
Join Date: Sep 2005
Location: Malden, MA.
Posts: 403
Bikes: 2009 Masi, 2014 Specialized Crossroads 1975 Schwinn Unicycle
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Likes: 0
Liked 2 Times
in
2 Posts
I'd say find any (rear) wheel that fits. And is a cassette axle. Just a modern rear derailer would make shifting more pleasant. Try the vintage forum. 1980's Treks & early Specialized road bikes (like Allez's) are pretty popular.
09-11-17, 07:54 AM
#9
Senior Member
Looks good, though possibly the frame is a touch small for you? That must the 19" frame. I am on the 21" yielding a fit like this:
I've since made some changes swapping out the handlebars, stem, and seatpost for Ritchey Classic parts. My hoods are now lower but the drops are at about the same height with the compact geometry.
I'm also now running Corsa G+ tires, too, after blowing out the sidewall on a rear Corsa SC messing around with my son and not being able to get another of the same tire to replace it.
I've since made some changes swapping out the handlebars, stem, and seatpost for Ritchey Classic parts. My hoods are now lower but the drops are at about the same height with the compact geometry.
I'm also now running Corsa G+ tires, too, after blowing out the sidewall on a rear Corsa SC messing around with my son and not being able to get another of the same tire to replace it.
