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Search: Posts Made By: GrayJay
Forum: Classic & Vintage 12-03-14, 12:57 AM
Replies: 134
Views: 10,202
Posted By GrayJay
You can get significantly more mechanical...

You can get significantly more mechanical advantage from those MAFACs if you set them up more like a medium profile design (or at least the neo-retro angle as described in the excellent analysis of...
Forum: Classic & Vintage 11-27-14, 12:01 PM
Replies: 26
Views: 1,401
Posted By GrayJay
I had and raced on an older used pro-strada in...

I had and raced on an older used pro-strada in the early 1990's, had this identical (red) paint job, chrome and decals. What I mostly remember about it was that the points of the lugs were oddly...
Forum: Classic & Vintage 10-26-14, 01:37 AM
Replies: 18
Views: 540
Posted By GrayJay
If the wheel has slipped in the dropouts...

If the wheel has slipped in the dropouts repeatedly, it has likely worn the forward end of the dropout. Once there is a slight taper worn into the dropout faces, it subsequently becomes much easier...
Forum: Classic & Vintage 10-19-14, 11:22 AM
Replies: 32
Views: 1,185
Posted By GrayJay
No need to apply heat to re-bend the DO, heat...

No need to apply heat to re-bend the DO, heat will just mess-up the surrounding chrome. Clamping lower half-of the DO in a bench vice would likely work but may leave marks on the outside chrome face...
Forum: Classic & Vintage 10-19-14, 10:38 AM
Replies: 57
Views: 3,073
Posted By GrayJay
Not exactly centerpull and no protruding post but...

Not exactly centerpull and no protruding post but in another instance of what it old is new again, the latest trend in breaking for high-end road bikes utilizes dual pivot calipers in which each of...
Forum: Classic & Vintage 10-11-14, 10:14 PM
Replies: 29
Views: 1,281
Posted By GrayJay
At that age, OLD spacing would have originally...

At that age, OLD spacing would have originally been 126mm. 3X water bottle bosses sounds MUCH more like a touring frame. Put a rear wheel on it and compare the gap between tire and seattube with...
Forum: Classic & Vintage 10-11-14, 09:49 PM
Replies: 48
Views: 2,326
Posted By GrayJay
Neat find, in the USA at least I dont remember...

Neat find, in the USA at least I dont remember ever seeing Giant branded bikes prior to around 1990 when they started marketing their own MTB and Cadex carbon frames. What does the headtube badge...
Forum: Framebuilders 07-24-14, 12:22 PM
Replies: 12
Views: 1,265
Posted By GrayJay
Good thread on kids bike construction, discussion...

Good thread on kids bike construction, discussion of tube sizes and sources;
kids bike 20" (http://forums.mtbr.com/frame-building/kids-bike-20-a-898962.html)
Forum: Classic & Vintage 07-11-14, 11:05 AM
Replies: 82
Views: 4,359
Posted By GrayJay
Dont forget 507mm for 24" kid MTB's, 571mm for...

Dont forget 507mm for 24" kid MTB's, 571mm for 650c (26" narrow road tires) both are fairly common. There are also a couple of other 20" wheel sizes that all use different rims. I
nterestingly,...
Forum: Classic & Vintage 07-11-14, 10:59 AM
Replies: 82
Views: 4,359
Posted By GrayJay
Fat bikes use standard 559mm (26" mtb tire size)...

Fat bikes use standard 559mm (26" mtb tire size) rims that are really wide (65-100mm width) combined with a huge tire to achieve tire outside diameter that is very close to a 29'er mtb tire. While...
Forum: Classic & Vintage 07-08-14, 04:08 PM
Replies: 23
Views: 752
Posted By GrayJay
Easy solution, there are these offset brake pad...

Easy solution, there are these offset brake pad holders that add 7mm of reach;
BDop OFFSET HOLDERS (http://www.bdopcycling.com/BDop%20Offset%20Holders.asp)
Forum: Classic & Vintage 07-07-14, 12:24 AM
Replies: 18
Views: 915
Posted By GrayJay
Rebuilding the wheel with quality new spokes...

Rebuilding the wheel with quality new spokes should be a good fix and work fine so long as the rim is not bent. No compelling reason to replace the hub if it is still in good shape but check first...
Forum: Classic & Vintage 06-24-14, 11:05 AM
Replies: 17
Views: 862
Posted By GrayJay
Good mathematical analysis of cantilever geometry...

Good mathematical analysis of cantilever geometry at http://www.circleacycles.com/cantilevers/canti-geometry.pdf

Interesting to note that standard narrow angle cantis start with high MA but then...
Forum: Classic & Vintage 06-19-14, 10:31 AM
Replies: 16
Views: 800
Posted By GrayJay
Looks very similar to the Banesto team bikes that...

Looks very similar to the Banesto team bikes that Indurain rode to TDF wins. Presence of interior helical splines in seattube would indicate if it was SLX or TSX, oria also used splines that run...
Forum: Classic & Vintage 06-15-14, 10:02 PM
Replies: 31
Views: 3,099
Posted By GrayJay
If no spacer between the cartridges, I would...

If no spacer between the cartridges, I would adjust them just slightly looser that typical for a loose ball and cone bearing. You will kill the cartridges if there is side preload through the...
Forum: Classic & Vintage 06-12-14, 01:05 AM
Replies: 13
Views: 897
Posted By GrayJay
If you find that 8s shifters and 7s FW dont play...

If you find that 8s shifters and 7s FW dont play nice together, try one of the alternate RD cable attachment locations in order slightly alter the pull ratio of the RD to increase travel of the RD...
Forum: Classic & Vintage 06-07-14, 01:11 AM
Replies: 24
Views: 1,747
Posted By GrayJay
Between the mix of campy/sach/gipiemmi components...

Between the mix of campy/sach/gipiemmi components that are on there now, it is highly likely that someone changed out some of the parts at one time. THe sachs components were somewhat of a budget...
Forum: Classic & Vintage 06-06-14, 08:50 PM
Replies: 11
Views: 1,127
Posted By GrayJay
It would probably work better if you disassemble...

It would probably work better if you disassemble the freewheel and use callipers to measure all the existing cogs and spacers, then use sandpaper to lap the spacers thinner where needed in order to...
Forum: Classic & Vintage 05-29-14, 07:16 PM
Replies: 9
Views: 1,224
Posted By GrayJay
Ranf should be one of the nicer Oria tubesets, it...

Ranf should be one of the nicer Oria tubesets, it has vertical (not helical like columbus) reinforcing ridges inside the chain stays, down tube, steer tube and seat tube (in which the ridges run...
Forum: Classic & Vintage 05-28-14, 11:15 PM
Replies: 9
Views: 1,224
Posted By GrayJay
I would estimate that this blue QA is from around...

I would estimate that this blue QA is from around 1990, give or take a couple of years. Looks like conventional size tubing and classic campy dropouts. Steel QA's from the early/mid 90s were built...
Forum: Classic & Vintage 05-20-14, 10:43 AM
Replies: 14
Views: 1,468
Posted By GrayJay
I have a modolo 1" quill stem that dates from...

I have a modolo 1" quill stem that dates from early 90s that used a hinged bar clamp to allow for easy bar mounting. It is not completely removable faceplate design like the more modern & common...
Forum: Classic & Vintage 05-16-14, 11:16 AM
Replies: 9
Views: 1,224
Posted By GrayJay
Post some good pictures for an ID of the bike,...

Post some good pictures for an ID of the bike, including any tubing decal. In the 2008 example post above, the decals looks consistent with the QA EL-OS road bike I bought new directly from William...
Forum: Classic & Vintage 05-08-14, 12:15 AM
Replies: 13
Views: 530
Posted By GrayJay
You might try using cantilevers fitted with these...

You might try using cantilevers fitted with these offset brake pad holders;
BDop OFFSET HOLDERS (http://www.bdopcycling.com/BDop%20Offset%20Holders.asp)

These are road style pad holders so...
Forum: Classic & Vintage 05-07-14, 11:47 PM
Replies: 11
Views: 1,252
Posted By GrayJay
If there is not an external friction shifting...

If there is not an external friction shifting setting, you might be able to just open them up and gut the index mechanism. I seem to remember that suntour index shifters used small ball-bearings and...
Forum: Classic & Vintage 05-07-14, 11:43 PM
Replies: 8
Views: 506
Posted By GrayJay
There were long cage Chorus and CDA long cage...

There were long cage Chorus and CDA long cage rear derailleurs made prior to 1992 arrival of ergo shifting that were intended to work with synchroII shifters and had capacity for a 30T rear cog. I...
Showing results 1 to 25 of 500

 
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