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Search: Posts Made By: GrayJay
Showing results 1 to 50 of 1000
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Forum: Classic & Vintage
04-16-24, 03:56 PM
Replies: 5
Views: 298
Posted By GrayJay

The campy parts are likely Athena group unless...

The campy parts are likely Athena group unless you splurged for c'da. I too still have a cannondale built with near identical 3.0 frame.
Forum: Framebuilders
04-10-24, 11:24 AM
Replies: 25
Views: 920
Posted By GrayJay

Play around with rattlecad

Play around with rattlecad
Forum: Framebuilders
04-08-24, 11:40 PM
Replies: 13
Views: 556
Posted By GrayJay

Aluminum tube welding repair is really only...

Aluminum tube welding repair is really only practical on 7005 or other "naturally aged" alu metallurgy. Majority of commercial aluminum frames use 6061-T6 with T6 heat treating needed to restore...
Forum: Framebuilders
12-15-23, 04:59 PM
Replies: 11
Views: 532
Posted By GrayJay

I wouldnt give up on keeping it rideable. The top...

I wouldnt give up on keeping it rideable. The top tube dent would likely roll out with tubing blocks. If the seatstay is just a bit dented but not structurally bent/bowed you could infill the dent,...
Forum: Classic & Vintage
12-11-23, 11:35 AM
Replies: 37
Views: 1,468
Posted By GrayJay

Looks like the SS caps were done with cast plugs...

Looks like the SS caps were done with cast plugs (where the DAVIDSON logo is). Worthy of saving and it would be a fairly straightforward repair job to entirely unbraze the pinhole SS and refit a new...
Forum: Framebuilders
12-10-23, 09:55 PM
Replies: 9
Views: 992
Posted By GrayJay

Thanks for sharing your process. Why did you need...

Thanks for sharing your process. Why did you need to shorten the SS so much? Couldn't you have cut through the SS with just a single hacksaw blade width (rather than 0.5 cm length) and then used a...
Forum: Classic & Vintage
12-08-23, 12:14 PM
Replies: 6
Views: 359
Posted By GrayJay

Keep in mind too, if replacement rims are...

Keep in mind too, if replacement rims are slightly different ERD you might be able to compensate by changing spoke lacing pattern and still re-use same length spokes. Example might be going from 3x...
Forum: Framebuilders
11-26-23, 01:00 PM
Replies: 13
Views: 820
Posted By GrayJay

Entirely do-able using brazing and an oxy/propane...

Entirely do-able using brazing and an oxy/propane torch assuming frame was originally brazed and not TIG welded.
The only caution I would have is that if your using the small disposable O2 canisters...
Forum: Framebuilders
11-17-23, 12:17 PM
Replies: 4
Views: 400
Posted By GrayJay

A set of files would probably work better for...

A set of files would probably work better for chrome removal than sandpaper. Just avoid gouging deep into the steel tube. I wouldn't be overly worried about toxicity of the chrome particulates, so...
Forum: Framebuilders
11-13-23, 09:24 AM
Replies: 18
Views: 865
Posted By GrayJay

Find someone with TIG or braze rig, it would be...

Find someone with TIG or braze rig, it would be all of a 2minute job that you can trade for a 6pack to make a good repair. Does not need to be an experienced frame builder, most anyone with...
Forum: Framebuilders
11-12-23, 09:10 AM
Replies: 18
Views: 865
Posted By GrayJay

There were a few vintage bikes built which used a...

There were a few vintage bikes built which used a seatpost with an internal expander bolt, sort of like used for old adjustable quill stems (before aheadsets). Either search and find a suitable...
Forum: Framebuilders
10-27-23, 01:17 PM
Replies: 8
Views: 750
Posted By GrayJay

Watch some of the tutorial videos at; ...

Watch some of the tutorial videos at;
https://www.youtube.com/@easycompositestv/videos
Their compression molding of chopped fibers might be particularly useful if you are making small, solid parts...
Forum: Framebuilders
08-24-23, 01:26 PM
Replies: 10
Views: 1,003
Posted By GrayJay

Strange looking cracks. If this were a stress...

Strange looking cracks. If this were a stress crack from use/fatigue then it would more likely run radial around the tube, instead of along the tube axis length. Might be that the seatstay tubing was...
Forum: Classic & Vintage
08-18-23, 01:45 PM
Replies: 13
Views: 1,012
Posted By GrayJay

Henk's bike and Panasonic team kit brings back...

Henk's bike and Panasonic team kit brings back memories for me. In 1990 I was 20 yrs old embarked on a solo European bike tour for the summer, staying at youth hostiles and B&B rooms along the way. I...
Forum: Classic & Vintage
08-10-23, 12:17 AM
Replies: 4
Views: 689
Posted By GrayJay

Campy offered rims in late 80's and throughout...

Campy offered rims in late 80's and throughout '90s.
https://velobase.com/ListComponents.aspx?Category=107&BrandID=547f3aa0-e86c-41a3-b5a6-f75628ea75e7
Their rims were surprisingly affordable for...
Forum: Framebuilders
08-08-23, 10:38 AM
Replies: 14
Views: 938
Posted By GrayJay

Much like Columbus or Reynolds, Vitus sold steel...

Much like Columbus or Reynolds, Vitus sold steel tubeset to other framebuildes and manufactures. Very likely that the tubeset for this chromed frame was produced by Vitus but the framebuilding...
Forum: Framebuilders
07-28-23, 05:14 PM
Replies: 2
Views: 637
Posted By GrayJay

You could plug end of frame tube that is...

You could plug end of frame tube that is difficult to access by freezing it in a block of ice to seal the tube end. You could even do this in combination with placing a pressure connection hose that...
Forum: Classic & Vintage
07-22-23, 11:25 AM
Replies: 25
Views: 1,229
Posted By GrayJay

I dont know that I have ever seen a clamp-on stop...

I dont know that I have ever seen a clamp-on stop that would go around the massive cannondale downtube. You might be able to jerry-rig something together with an automotive hose clamp but it would be...
Forum: Classic & Vintage
07-21-23, 11:12 AM
Replies: 17
Views: 762
Posted By GrayJay

I would not have any concern that the aluminum...

I would not have any concern that the aluminum fork would be prone to a sudden failure simply due to its age. I would be more worried if it was known to have massively high miles of hard riding or...
Forum: Classic & Vintage
07-19-23, 03:15 PM
Replies: 29
Views: 1,289
Posted By GrayJay

Axle will bend/break from rider weight and riding...

Axle will bend/break from rider weight and riding over bumps, not from using small cog. You need to extend the axle spacers to make the 8sp FW work but when used with a threaded axle and loose ball &...
Forum: Classic & Vintage
07-19-23, 11:15 AM
Replies: 24
Views: 752
Posted By GrayJay

Older cantilever brakes with separate saddle...

Older cantilever brakes with separate saddle cable had possible safety problem of the saddle cable becoming detached from the main brake cable, such as if the saddle anchor bolt slipped or if saddle...
Forum: Classic & Vintage
07-18-23, 06:01 PM
Replies: 13
Views: 626
Posted By GrayJay

In photo #2, sort of looks like the bottom thread...

In photo #2, sort of looks like the bottom thread roller die is worn out?
Forum: Classic & Vintage
07-18-23, 03:17 PM
Replies: 29
Views: 907
Posted By GrayJay

I think I have previously used a small spare...

I think I have previously used a small spare hex-nut in place of a missing dome shaped lock-nut. A bit ugly but it works. It would also be fairly easy to fabricate a new replacement dome nut if you...
Forum: Classic & Vintage
07-18-23, 01:36 PM
Replies: 2
Views: 314
Posted By GrayJay

Cut some 1" x 12" plastic strips from an old...

Cut some 1" x 12" plastic strips from an old 5-gallon plastic bucket. Use a propane torch to light one end of the strip on fire and use the dripping molten plastic candle to "weld" the cracked wheel...
Forum: Classic & Vintage
07-18-23, 01:07 PM
Replies: 17
Views: 1,088
Posted By GrayJay

Amazing set of photos. The online album just...

Amazing set of photos. The online album just need the addition of sound effects from a slide projector carousel advancing with each new photo!
Forum: Classic & Vintage
07-17-23, 11:46 AM
Replies: 90
Views: 9,781
Posted By GrayJay

If rear wheel clearance is too limiting for your...

If rear wheel clearance is too limiting for your use, you might consider dimpling the chainstays for a bit more tire clearance so you can easily run 25mm. Dimpling chainstays would be fairly easy and...
Forum: Framebuilders
07-16-23, 10:06 PM
Replies: 22
Views: 1,740
Posted By GrayJay

If the front triangle is known as more or less...

If the front triangle is known as more or less strait, you can take a thin string or fishing line; tie to end to a rear dropout, loop string around headtube and then back to opposite dropout. You...
Forum: Framebuilders
07-14-23, 05:11 PM
Replies: 13
Views: 1,561
Posted By GrayJay

Might be possible to CAREFULLY drill a hole...

Might be possible to CAREFULLY drill a hole through the exposed face of the drop-out (or tube cap) that covers over the lower end of the dented seatstay. Start with a smaller hole that is...
Forum: Classic & Vintage
07-06-23, 07:02 PM
Replies: 29
Views: 907
Posted By GrayJay

You do know that the internal expansion hex-bolt...

You do know that the internal expansion hex-bolt is left hand thread, clockwise to loosen?
Hold the protruding part of the pod with crescent wrench on flat sides. You could also sacrifice the...
Forum: Framebuilders
06-16-23, 07:14 PM
Replies: 22
Views: 1,740
Posted By GrayJay

Looks salvageable. They likely used a dremmel or...

Looks salvageable. They likely used a dremmel or some other overly aggressive grinder wheel to obliterate the top tube guides. Not ideal but the top tube is not very stressed so it will likely be...
Forum: Framebuilders
06-03-23, 10:10 AM
Replies: 25
Views: 2,420
Posted By GrayJay

Before brazing post onto frame and fork, I would...

Before brazing post onto frame and fork, I would get the 650b wheels and tires together. Test fit and ride first to ensure that you have plenty of tire/frame clearance and that you like the results...
Forum: Framebuilders
05-12-23, 04:29 PM
Replies: 8
Views: 1,036
Posted By GrayJay

Repair welding of Mg will be an extreme...

Repair welding of Mg will be an extreme specialty. One of the only builders I know of that built with Mg was https://zinncycles.com/ , might try them?
Forum: Classic & Vintage
02-25-23, 11:43 AM
Replies: 48
Views: 2,803
Posted By GrayJay

Decades ago while I was road racing, I obtained...

Decades ago while I was road racing, I obtained an unusual wide spacing 6-speed winner freewheel with an 11t small cog. It was from the X position cog on the chart and screwed onto outboard threads...
Forum: Classic & Vintage
02-04-23, 10:40 AM
Replies: 4
Views: 288
Posted By GrayJay

Looks to be a Trek 1000, circa 1989. They came...

Looks to be a Trek 1000, circa 1989. They came with steel fork and trek was a big user of mallard hubs.
Page 20 of catalog https://drive.google.com/file/d/1b3qsQcr6e2rLkwgqvPn6sZX7NrSx4yEd/view
Forum: Classic & Vintage
02-03-23, 03:18 PM
Replies: 9
Views: 498
Posted By GrayJay

Shimano ratio shifters are just not going to play...

Shimano ratio shifters are just not going to play well with your campy derailleur.

Have a look at shifter & derailleur combo into at;...
Forum: Classic & Vintage
02-03-23, 01:46 PM
Replies: 9
Views: 498
Posted By GrayJay

135mm dropout spacing is not typical for vintage...

135mm dropout spacing is not typical for vintage road bikes, usually only used on MTB hubs. A 1984 frame would have originally been 6/7speed 126mm width so your frame may have been previously...
Forum: Classic & Vintage
01-18-23, 02:44 PM
Replies: 46
Views: 2,631
Posted By GrayJay

In early 90's tubing supplier Columbus was...

In early 90's tubing supplier Columbus was fabricating and supplying complete unicrown forks that some frame manufactures used. They had columbus stamping on the drop-outs and on the fork steer tube...
Forum: Framebuilders
12-20-22, 06:02 PM
Replies: 13
Views: 893
Posted By GrayJay

I've experimented a bit trying to use freezing...

I've experimented a bit trying to use freezing water to pop dents out frame tubing. Tape off vent holes on one end of the tube, add water to a few inches below your dents and let that freeze into an...
Forum: Classic & Vintage
10-06-22, 11:48 AM
Replies: 12
Views: 985
Posted By GrayJay

Divots were likely a DIY modification to try to...

Divots were likely a DIY modification to try to give the cement more grab on the rim.

Usually it is the rim joint (opposite valve stem) is the heavy/imbalance point of a wheel, often there is an...
Forum: Classic & Vintage
10-03-22, 01:27 AM
Replies: 27
Views: 1,302
Posted By GrayJay

The stem mounted shifters and the turkey brake...

The stem mounted shifters and the turkey brake levers were likely original to this bike. The lowest spec technium models came with these to appeal to entry level recreational riders as seen in this...
Forum: Classic & Vintage
10-01-22, 09:59 AM
Replies: 27
Views: 1,302
Posted By GrayJay

Those brake levers are cheap garbage, probably...

Those brake levers are cheap garbage, probably harvested of same huffy bike that supplied the heavy steel wheel. Replacement of the brake levers will improve braking. If you go to 700c rims, you will...
Forum: Classic & Vintage
08-22-22, 09:52 AM
Replies: 38
Views: 1,904
Posted By GrayJay

Clamp the flat inner portion of the FW in a fixed...

Clamp the flat inner portion of the FW in a fixed bench vise and then apply counter-clockwise force at two opposite sides of the rim (like a big bus steering wheel). The coupled force (at the rim)...
Forum: Early Brifter Bikes - 7,8, and 9 Speed
08-11-22, 11:22 AM
Replies: 18
Views: 1,176
Posted By GrayJay

a 28t chainring would be tiny! (chainrings go on...

a 28t chainring would be tiny! (chainrings go on the crankset, I think you intended to ask about max cassette cog size which is not the same as a chainring).
Forum: Classic & Vintage
08-02-22, 11:11 AM
Replies: 17
Views: 819
Posted By GrayJay

Suntour bar-ends will work fine with vintage...

Suntour bar-ends will work fine with vintage campy. The suntour micro-ratchet bar ends are a great design, the ratchets help counter-act the cable/spring tension of the rear derailleur so less...
Forum: Classic & Vintage
08-02-22, 10:46 AM
Replies: 22
Views: 11,651
Posted By GrayJay

I once had a MA40 rim crack, cracks around one of...

I once had a MA40 rim crack, cracks around one of the spoke eyelet slowly pulled the eyelet through the rim as a tried to true the wheel. .
Forum: Classic & Vintage
07-12-22, 03:11 PM
Replies: 16
Views: 1,056
Posted By GrayJay

Merckx sold team replica frames to general public...

Merckx sold team replica frames to general public in the 7-11 paint scheme. See the sales brochure at;
http://www.tearsforgears.com/2008/02/eddy-merckx-1990-catalog.html
brochure shows same chrome...
Forum: Classic & Vintage
07-11-22, 11:53 AM
Replies: 16
Views: 1,056
Posted By GrayJay

In 1990 I was train/bike touring Europe and spent...

In 1990 I was train/bike touring Europe and spent a few days watching my first pro bike race in person, following the Tour of Switzerland for a few days. In the evening after one of the stages, I...
Forum: Framebuilders
05-24-22, 05:30 PM
Replies: 21
Views: 1,892
Posted By GrayJay

Not entirely sure what alloy "x-fusion quaternary...

Not entirely sure what alloy "x-fusion quaternary aluminum" actually is, but I did see that some other alu fuji bikes from that era listed as 7005 series which can be TIG welded without needling...
Forum: Framebuilders
01-21-22, 12:33 AM
Replies: 8
Views: 1,311
Posted By GrayJay

If objective is to lengthen a short steer tube,...

If objective is to lengthen a short steer tube, consider cutting the existing ST above the crown and splicing in a longer ST with an interval sleeve reinforcing the splice. Other option might be to...
Forum: Framebuilders
11-04-21, 03:17 PM
Replies: 18
Views: 3,632
Posted By GrayJay

I saw another source citing the 1200 model as...

I saw another source citing the 1200 model as using easton tubing, might be that Trek changed tubing suppliers for the 1200 throughout the years?
Reason for all the bonding and rivets is that it...
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