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Need Help: Looking for Garmin Gravel Worlds Vintage bike/frame

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Need Help: Looking for Garmin Gravel Worlds Vintage bike/frame

Old 11-28-23, 10:42 AM
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More photos at this link:
https://photos.app.goo.gl/yXb2bSaVigXyq1Cj7

It's not for sale, but it would be ideal for your application. Drop bars would work better. The bike as shown is 20 pounds. 650B wheels. 1981! This bike was the inspiration for the Specialized Pink Team Stumpjumper.
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Old 11-28-23, 03:09 PM
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Originally Posted by Trakhak
Holy ____!!! That's stunning.

OP: "I'm looking for a good cubic zirconia."

Doug Fattic: "Perhaps you might consider this diamond of the first water."

(No offense intended to the OP or the other bikes under consideration. Just a metaphor to attempt to convey the difference between decent production bikes and Doug Fattic's handiwork shown above.)
Agreed, way out of my price range, but an amazing bike.
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Old 11-28-23, 04:02 PM
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Originally Posted by mhespenheide
Can you provide a name or link to the current-model tektros? I've been curious about these but haven't wanted to pull the trigger on a set of XC-Pro canti's.
Not to confuse with tri-dangle part for the straddle cable. Amazon offers them called M-wave.





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Old 11-28-23, 04:51 PM
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Originally Posted by Classtime
What would those greater racers chose to race on today?
The latest and greatest. They would not be interested in riding a vintage bike. They didn't then, no reason to think they would today.

But if we are doing a deep dive, what do you consider chain stays that are too long? And how will those long chain stays affect the race outcome?
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Old 11-28-23, 09:28 PM
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This race requires a vintage bike, X3speed has his Miyata, and I think its chain stays are a perfect length. I’m looking forward to the build and eventually a race report that includes the choices of some of the others racing in the vintage category.
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Old 11-28-23, 10:24 PM
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Alright! I just bought the m wave booster from Home Depot thanks to chain whipped. I also ordered a set of nos Diacompe 981s off eBay for $17.50 each. I mentioned earlier about building a set of light gravel worthy wheels for the race in 700c - 100/126mm - freewheel. Id like to find some nos parts. If yall were going to do the same, which hubs and rims would you pick? Thanks again for all the help!

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Old 11-29-23, 07:55 AM
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Originally Posted by zukahn1
Most of the 80's nicer Dia-compe stuff have a lot of reach adjustment close 10mm add 3-4mm with modern brake pads and a bit of filing.
yes, but the pivot posts with 700c will be too high from optimal, the arc that they reach to the rim really pushes fresh pads and replace with minimal wear.
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Old 11-29-23, 08:03 AM
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36 hole 7400 Dura Ace with Araya A20s.
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Old 11-29-23, 08:55 AM
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Originally Posted by X3speed
Alright! I just bought the m wave booster from Home Depot thanks to chain whipped. I also ordered a set of nos Diacompe 981s off eBay for $17.50 each. I mentioned earlier about building a set of light gravel worthy wheels for the race in 700c - 100/126mm - freewheel. Id like to find some nos parts. If yall were going to do the same, which hubs and rims would you pick? Thanks again for all the help!
...I would wait until I had the new brakes fitted to the frame, before I started buying wheel stuff. Then stick in your 700c wheelset to check positioning and tracking.
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Old 11-29-23, 10:52 AM
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If the rules permit for racing i would suggest going with smaller high end tires say 26 rear 28 front 120tpi race semi slicks at close to max preessure if allowed.

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Old 11-30-23, 02:39 PM
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Originally Posted by Classtime
This race requires a vintage bike, X3speed has his Miyata, and I think its chain stays are a perfect length. Im looking forward to the build and eventually a race report that includes the choices of some of the others racing in the vintage category.
Glad that someone else is asking for a race report. Until this thread was started, I had no idea that this event had a vintage category. Now Im thinking about 2025.
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Old 12-01-23, 02:19 PM
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Event organization has announced a greatly expanded schedule for 2024.

Anyways, a little bit more on the cantilever brakes bellcrank device. Here's the obscure Cannonade version with helper spring back. Interesting part and posted for ones future reference. (Have never personally seen them and full disclosure, not affiliated with seller.)


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Old 12-01-23, 03:21 PM
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Originally Posted by Mr. Spadoni
Glad that someone else is asking for a race report. Until this thread was started, I had no idea that this event had a vintage category. Now Im thinking about 2025.
I will definitely give a report and updates as the bike comes together. This weekend I'll be working with the frame as it just came in. I will focus on fitting the wheels and checking for brake and tire fit with the 700c wheels. I'm waiting on the stem yet, so fitting handle bars may have to wait. I have a number of parts inbound such as the freewheel, seatpost and others. Working on buying a crankset. I'll be using an 80's mountain bike triple with Biopace rings if I can find one in good condition and for a reasonable price(Under $50 shipped?). I put in a few offers on Ebay, so we will see. I'm curious what higher end bottom brackets exist for squre taper cranksets and I'm not entirely sure how wide to go on the spindle with a mountain triple. Please keep the advice flowing. More to come!
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Old 12-01-23, 09:51 PM
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Found this: Some perspective.

https://www.cxmagazine.com/greg-vaug...ekai-magnum-s7

I dont think Id go with a friction triple.
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Old 12-01-23, 11:36 PM
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“I'll be using an 80's mountain bike triple with Biopace rings……”
Gotta ask why it’s important to go with Biopace rings? Might have more options if you go with something round.
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Old 12-01-23, 11:51 PM
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Originally Posted by X3speed
I'm curious what higher end bottom brackets exist for squre taper cranksets and I'm not entirely sure how wide to go on the spindle with a mountain triple. Please keep the advice flowing. More to come!
...almost any sealed unit bottom bracket assembly of reasonable quality will do pretty well, and should accommodate your needs for training miles and the race itself. The best ones are stuff like the Phil Wood ones, which are pricey. White industries has offered some in the past, but I don't know their current production. But almost all of the better Shimano units (not the cheapest ones, but a UN 55 or better), usually last quite a while. There are many others that have been made and sold over the years. I have a whole box of used ones in various spindle lengths and cup configurations, that I use on projects. Ofmega, Campy, Stronglight, Galli, Mavic and some others I can't remember right now all had some high quality BB's they made and sold over the years. But I'm guessing nobody cares if your race bike has a bottom bracket unit that is newer than 1989, so cut yourself a break, and just buy something off e-bay or Amazon that has the right spindle length and tapered ends to fit the crank you use...even if you buy new.

The optimal spindle length for any crank has usually been defined by the manufacturer at some point. So I usually just look it up over on VeloBase, when it's working. It also has a section on bottom brackets, but for your purposes here, it's probably more confusing to look there and try to work backwards to the crank you end up using.

I've never been a big fan of Biopace rings, as I find they don't seem to fit well with my pedaling style and cadence. But I do use them in the smallest sizes as the smallest chainring on a touring triple. I don't ride a whole lot on gravel, even though we have a lot of gravel levee top roads here, so if they work well for you, I'm sure they're out there. The co-op here has a whole box of Biopace rings that nobody ever seems to use.
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Old 12-02-23, 06:03 AM
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Originally Posted by Classtime
This race requires a vintage bike, X3speed has his Miyata, and I think its chain stays are a perfect length. Im looking forward to the build and eventually a race report that includes the choices of some of the others racing in the vintage category.
My apologies for beating the horse, what is "a perfect length"? And if if they aren't a perfect length, say 15mm (?) longer, would that be the difference between winning the race and, as you put it, collecting a finishers medal? Why would that be the case?
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Old 12-02-23, 07:06 AM
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Originally Posted by iab
My apologies for beating the horse, what is "a perfect length"? And if if they aren't a perfect length, say 15mm (?) longer, would that be the difference between winning the race and, as you put it, collecting a finishers medal? Why would that be the case?
The Miyata is in hand and will be raced in the Gravel Worlds. As such, it is a Gravel Race bike. What Gravel Race bike would not have the perfect chain stay length for a Gravel Race.
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Old 12-02-23, 09:00 AM
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I am using the Phil Woods BB on one of my bikes (it came with the bike) and from what I’ve seen and experienced , it would give you options for a triple . There is plenty of room for adjusting the chain line for different chain wheel set ups . I am using it on my road bike with a Campagnolo Record double so there are a few threads on the non drive side that could be used if I decided to add a triple. There is no “fixed cup” on these style BB’s. It does take a bit of trial and error to get it just right but it really doesn’t take that long to set it. If you get one , be sure to get the tool . I think the Phil tool is about $15-$20 on eBay.
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Old 12-02-23, 09:37 AM
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Originally Posted by Kabuki12
I am using the Phil Woods BB on one of my bikes (it came with the bike) and from what Ive seen and experienced , it would give you options for a triple . There is plenty of room for adjusting the chain line for different chain wheel set ups . I am using it on my road bike with a Campagnolo Record double so there are a few threads on the non drive side that could be used if I decided to add a triple. There is no fixed cup on these style BBs. It does take a bit of trial and error to get it just right but it really doesnt take that long to set it. If you get one , be sure to get the tool . I think the Phil tool is about $15-$20 on eBay.
Thank you for the advice, I will do some research on bb's. Hoping to have a low drag bearing setup.
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Old 12-02-23, 09:42 AM
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Originally Posted by Classtime
The Miyata is in hand and will be raced in the Gravel Worlds. As such, it is a Gravel Race bike. What Gravel Race bike would not have the perfect chain stay length for a Gravel Race.
At this point in my athletic career, the larger concern is a durable bike that fits bigger tires. I'm 180ish pounds, so a frame which can handle my weight and torque is what is most important. Hopefully this frame will allow for decent climbing, which will likely occur in and out of the saddle. I will also be sitting a little more upright in my cockpit setup as it is a 150mi "race" to comfort will definitely play a role in success. Therefore my weight will be pushed further to the back of the bike. I also appreciate the link to the cx story. That helped my approach on the next few parts. Hoping a nicely priced Biopace mtb triple comes around.
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Old 12-02-23, 09:43 AM
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Originally Posted by 3alarmer
...almost any sealed unit bottom bracket assembly of reasonable quality will do pretty well, and should accommodate your needs for training miles and the race itself. The best ones are stuff like the Phil Wood ones, which are pricey. White industries has offered some in the past, but I don't know their current production. But almost all of the better Shimano units (not the cheapest ones, but a UN 55 or better), usually last quite a while. There are many others that have been made and sold over the years. I have a whole box of used ones in various spindle lengths and cup configurations, that I use on projects. Ofmega, Campy, Stronglight, Galli, Mavic and some others I can't remember right now all had some high quality BB's they made and sold over the years. But I'm guessing nobody cares if your race bike has a bottom bracket unit that is newer than 1989, so cut yourself a break, and just buy something off e-bay or Amazon that has the right spindle length and tapered ends to fit the crank you use...even if you buy new.

The optimal spindle length for any crank has usually been defined by the manufacturer at some point. So I usually just look it up over on VeloBase, when it's working. It also has a section on bottom brackets, but for your purposes here, it's probably more confusing to look there and try to work backwards to the crank you end up using.

I've never been a big fan of Biopace rings, as I find they don't seem to fit well with my pedaling style and cadence. But I do use them in the smallest sizes as the smallest chainring on a touring triple. I don't ride a whole lot on gravel, even though we have a lot of gravel levee top roads here, so if they work well for you, I'm sure they're out there. The co-op here has a whole box of Biopace rings that nobody ever seems to use.
This is great info, thank you!
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Old 12-02-23, 12:51 PM
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Keep an eye out for a little used MTB for crankset, BB, derailleurs, and thumbshifters might work as bar ends?
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Old 12-02-23, 03:04 PM
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Originally Posted by Classtime
Keep an eye out for a little used MTB for crankset, BB, derailleurs, and thumbshifters might work as bar ends?
That's the plan! Hoping to do bar-con shifters. Ebay has been my friend as of late.
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Old 12-23-23, 10:42 PM
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Update!






Quick update, the brakes seem to be preset for 700 C wheels already, even though the bike did come with 27 inch. Weird I know. I know some people were not happy with my choice, but today I figured out that it will take 42C tires, which means ride quality will be fantastic and I will get the grip and comfort I need for gravel. Really happy with the bike overall. I set up the seat post stem and handlebars as well today. The handlebars are much higher than I will probably run them.
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