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Groupset for early 80s Trek 450

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Groupset for early 80s Trek 450

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Old 02-13-18, 10:17 AM
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glevine
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Groupset for early 80s Trek 450

I have an old bike I use for casual family rides, errands, and sometimes commuting in the big city. My components are VERY old, and no, I can't bring myself to retire this bike. Also, I suspect one day I'll use it for some touring.

How do I fit/choose a drivetrain, shifters, brakes to it? Any recommendations?
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Old 02-13-18, 10:35 AM
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Originally Posted by glevine View Post
I have an old bike I use for casual family rides, errands, and sometimes commuting in the big city. My components are VERY old, and no, I can't bring myself to retire this bike. Also, I suspect one day I'll use it for some touring.

How do I fit/choose a drivetrain, shifters, brakes to it? Any recommendations?
Understandable.

What's your budget? How modern do you want to go? Friction or indexed shifting? Where do you want the shifters? (Downtube? Bar end? Integrated with brake lever?) Do you want/need more or higher/lower gearing?
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Old 02-13-18, 10:50 AM
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Posting in C&V might get some better ideas

https://www.bikeforums.net/classic-vintage/
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Old 02-13-18, 01:11 PM
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That was the first bike I raced on. I think mine was a 460, though I doubt there was much difference. I put RSX on it and a rear wheel with a cassette body around 1997. It worked great.

That is probably equivalent to Tiagra. Remember you need a cassette body, this bike has a freewheel. It's cheaper and easier to get a whole wheel than rebuild on a new hub. Look for 130mm. Your bike is 126mm, you probably won't notice the extra 4mm when you mount the wheel. If you end up with a mountain bike hub, it'll cause problems.

If you have a bike co-op in your town, I bet you can have this thing running great for a couple hundred dollars and you'll learn a lot and make some friends.
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Old 02-13-18, 01:25 PM
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The C&V people can help talk you through this. Pictures are a big help especially of the drive side. You can spend a lot on this project so you want to try to keep your costs reasonable.
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Old 02-13-18, 01:49 PM
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Your Trek will accept virtually any modern component group, with the possible exception of need medium reach calipers. So you could get parts from almost any era since the '80s. It really comes down to what you want to spend and what you want the bike to do when it is finished.
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Old 02-13-18, 02:04 PM
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A set 80's 105's or 600's would work nicely. The DT shifters would work well with touring. Just my two cents...or 1.58 USD.
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Old 02-14-18, 07:34 PM
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that would be a great project.
do you plan to use your current wheelset?
that will likely be your limiting factor on what groupset you can upgrade to.
if it is a freewheel you are pretty much stuck with a 7-8 speed sti group
if it is a freehub, depending on your free hub, you may be able to go to a 8-9-10...may be 11 speed system.

a 10 speed tiagra group at the 300 range is a really decent deal, you cant go wrong with a 11 speed 105 group in the 400 range.

The new R8000 group can be had in the 600-700 range.
you have a lot of options.
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Old 02-15-18, 06:12 PM
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Originally Posted by glevine View Post
I have an old bike I use for casual family rides, errands, and sometimes commuting in the big city. My components are VERY old, and no, I can't bring myself to retire this bike. Also, I suspect one day I'll use it for some touring.

How do I fit/choose a drivetrain, shifters, brakes to it? Any recommendations?
MICRO shift they make a large variety of affordable stuff
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Old 02-16-18, 07:43 AM
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Budget overall probably in the $400-500 range overall, but I need shifters, brake calipers, drop bars (converting from straight bar), and maybe a rear wheel. Right now I have 700 front 27" rear. I got the 27" bolt-on because my brake wasn't reaching far enough for 700". I've been eye-balling Shimano Tiagra and 105, but only because I don't know what else. I really want this to last 10 years and 10k miles.
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Old 02-16-18, 07:54 AM
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Originally Posted by thehammerdog View Post
MICRO shift they make a large variety of affordable stuff
Do you have a MicroShift model(s) recommendation?
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Old 02-16-18, 08:03 AM
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One of the better bets on wheels are these from velomine (I'd get the 700c rather than the 27 inch which means that you'll have to check the brake reach):

Sun CR18 Road Bike Sealed Bearing 700c Wheelset 126mm Rear [072774744381] - $109.00 Velomine.com : Worldwide Bicycle Shop, fixed gear track bike wheelsets campagnolo super record vintage bike

That's a $109 plus shipping/tax etc.

Shimano makes decent 7 speed freewheels:

https://www.amazon.com/Shimano-7-Spe.../dp/B00OJZPRVO

and then pick up 7 speed brifters and a new RD, like these microshift ones, Microshift 7 Speed Road Levers | Jenson USA

Claris derailleurs are cheap and work fine.

The crank should be good with a new bottom bracket. Shimano makes good sealed square taper BBs that are cheap.
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Old 02-16-18, 08:51 AM
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Originally Posted by athrowawaynic View Post
Understandable.

What's your budget? How modern do you want to go? Friction or indexed shifting? Where do you want the shifters? (Downtube? Bar end? Integrated with brake lever?) Do you want/need more or higher/lower gearing?
I'd like something new to last 10 years and 10k miles. Budget overall probably in the $400-500 range overall, but I need shifters, brake calipers, drop bars (converting from straight bar), and maybe a rear wheel. Right now I have 700 front 27" rear. I got the 27" bolt-on because my brake wasn't reaching far enough for 700". I've been eye-balling Shimano Tiagra and 105, but only because I don't know what else. I also have no idea how to select the groupset options/measurements and need help with that.

I think I want indexed shifting, but why would I want "friction"? I want the shifters with the brake levers. It's definitely not for speed (got a Paramount for that), and while one day I may tour a bit, that's not its primary purpose.

I really appreciate the help!
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Old 02-16-18, 08:57 AM
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Velomine has 27 inch wheels as well but the brake reach issue can be fixed. I'd get the 700c as there is better tire availability.

7 speed microshift brifters can be bought for under $100. Claris derailleurs work fine. You can definitely do this for the amount of money you have budgeted and likely for less than $400 as long as you do your own work.
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Old 02-16-18, 11:10 AM
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I wished I ran into these when I was still dealing with 27inch wheels.

Its your frame made for 27inch wheels or 700c ?

if it is in you budget a set of matching wheels will bring you into the 11 speed realm.

https://www.ebay.com/itm/AICAN-Alumi...UAAMXQDfdRxV6U

AICAN Aluminum Bike Bicycle Cycling C-Brake Pads Shoes for Shimano SRAM
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Old 02-16-18, 07:45 PM
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Originally Posted by glevine View Post
Do you have a MicroShift model(s) recommendation?
I do not but the stuff seems tobe big bang for the buck google it
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Old 02-17-18, 08:09 AM
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Originally Posted by SSRI View Post
that would be a great project.
do you plan to use your current wheelset?
that will likely be your limiting factor on what groupset you can upgrade to.
if it is a freewheel you are pretty much stuck with a 7-8 speed sti group
if it is a freehub, depending on your free hub, you may be able to go to a 8-9-10...may be 11 speed system.

a 10 speed tiagra group at the 300 range is a really decent deal, you cant go wrong with a 11 speed 105 group in the 400 range.

The new R8000 group can be had in the 600-700 range.
you have a lot of options.
Yes, should be fun. I have a lot to learn through this--just don't want to kill my piggy bank in the process, but am willing to spend $400-500. I will need to buy a new wheel--my 27" is giving me headaches for various reasons. I'd like a 10 or 11-speed, been eyeing Tiagra or 105.

My biggest problem right now is choosing all of the right versions of tiagra or 105. There are so many for each component. How do I know which ones I need?
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Old 02-17-18, 08:13 AM
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Originally Posted by SSRI View Post
that would be a great project.
do you plan to use your current wheelset?
that will likely be your limiting factor on what groupset you can upgrade to.
if it is a freewheel you are pretty much stuck with a 7-8 speed sti group
if it is a freehub, depending on your free hub, you may be able to go to a 8-9-10...may be 11 speed system.

a 10 speed tiagra group at the 300 range is a really decent deal, you cant go wrong with a 11 speed 105 group in the 400 range.

The new R8000 group can be had in the 600-700 range.
you have a lot of options.
A local bike shop (first time I went in there) told me that 7-8 speed is all that will fit in my bike. But I didn't get the impression he was that interested in anything but selling me a bike. Do you know for sure a 10-11 will fit in this bike?

g
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Old 02-17-18, 08:14 AM
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glevine
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Originally Posted by SSRI View Post
I wished I ran into these when I was still dealing with 27inch wheels.

Its your frame made for 27inch wheels or 700c ?

if it is in you budget a set of matching wheels will bring you into the 11 speed realm.

--the url i'm not allowed to post--

AICAN Aluminum Bike Bicycle Cycling C-Brake Pads Shoes for Shimano SRAM
Thanks SSRI.

A local bike shop (first time I went in there) told me that 7-8 speed is all that will fit in my bike. But I didn't get the impression he was that interested in anything but selling me a bike. Do you know for sure a 10-11 will fit in this bike?

g
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Old 02-17-18, 08:44 AM
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Originally Posted by glevine View Post
Thanks SSRI.

A local bike shop (first time I went in there) told me that 7-8 speed is all that will fit in my bike. But I didn't get the impression he was that interested in anything but selling me a bike. Do you know for sure a 10-11 will fit in this bike?

g
it will fit, but the rear dropouts will need to be spread slightly when putting the wheel on. It's no big deal. You already have a newer bike, right? Try putting the new bike's rear wheel on the Trek, just to see how little effort it takes.

You'll also need the proper front derailleur(or adaptor) for a 28.6mm seat tube. If the frame has a braze-on style tab, this is unnecessary.

Last edited by noodle soup; 02-17-18 at 09:12 AM.
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Old 02-17-18, 08:59 AM
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Originally Posted by glevine View Post
Thanks SSRI.

A local bike shop (first time I went in there) told me that 7-8 speed is all that will fit in my bike. But I didn't get the impression he was that interested in anything but selling me a bike. Do you know for sure a 10-11 will fit in this bike?

g

Hi G

The bike store is trying to sell you a bike..nothing wrong with a new bike if that is the direction you wanted to go.
But from what the mechanic told you (if he is not brushing you off) if you bike can fit a 7-8 speed it will no doubt be built up to be a 9-10-11 speed.

but before we dive into the rabbit hole...
there are a couple of things we need to know for sure before we can really move forward.

What size wheel is the frame made for? 700c or 27inch.
if it is made for 700c it will be easiest to build up, if it is 27 inch then there are other things to consider.
FYI if a frame is made for 27inch wheels, your brake reach will be longer. Your brakes might not reach the rims if you install a 700c wheel (since a 700c wheel have a smaller diameter-please excuse the over explanation if you know this already I just want to make sure you know what built specs you might need).


Yes you can still mount a 700c wheelset to the frame, but you might need some LONG reach brakes in-order to reach the rims. They will not be as stiff as a regular set of brakes for 700c wheels (short reach brakes).

Depending on the reach needed you might be able to get away with the extended brake shoes I linked earlier but its hard to tell until you mount the wheels in.

but if the bike is made for 700c wheels, you are good to go with a new or used set of 700c wheels.

Next is your frame spread in your rear triangle, what is the inner distance between the 2 rear drop out.
if it is 126mm it was meant to for a 6-7 speed set up, if it is 130mm you can use any modern wheels for a 8-9-10-11 speed set up.

But, I believe you have a steel frame-you can make a 130 modern wheel fit. The frame will give enough for you to fit the wheel in. It will be a little tight but it will work. If you have an Aluminium frame I am afraid you will have to go with a 126 wheel which will be a 6-7 speed configuration.

I have build up several vintage steel frames with modern components like many other members of this forum.
It will work.

Lets get a confirmation on those some basic specs first then we can work on the components.
Frame wheel size ?
Rear Triangle spread?
Frame Material?
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