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Search: Posts Made By: Andrew R Stewart
Showing results 1 to 50 of 1000
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12-11-19, 11:07 AM
Replies: 5
Views: 34
Posted By Andrew R Stewart

Sounds like a bearing noise, possibly a cracked...

Sounds like a bearing noise, possibly a cracked race/cone in the freehub body? If so and if the parts are available replacing just the FH body could be done. But not knowing the details it's...
12-10-19, 10:47 PM
Replies: 14
Views: 277
Posted By Andrew R Stewart

This is one of the bigger challenges, hiring good...

This is one of the bigger challenges, hiring good help. When I had my shop I found the ratio of hires to keepers was about 5 to 1. These days I see even less keepers. Glad I don't own a shop any...
Forum: Framebuilders
12-09-19, 09:37 PM
Replies: 16
Views: 275
Posted By Andrew R Stewart

Some builders will over rake their blades then...

Some builders will over rake their blades then squeeze the flattening out a tad which un rakes the blade a small amount. The blade trapped between boards in a big vice do a good job at this....
Forum: Framebuilders
12-09-19, 09:45 AM
Replies: 11
Views: 203
Posted By Andrew R Stewart

I took guy153's comment to say that thin rings...

I took guy153's comment to say that thin rings are made for adding to lugs. Maybe, but not any I've seen. Andy
Forum: Framebuilders
12-09-19, 09:40 AM
Replies: 3
Views: 136
Posted By Andrew R Stewart

I've gun blued (of the two methods I know of I...

I've gun blued (of the two methods I know of I did the cheaper "cold" version, brushed on special fluid and wiped off) a few items and regularly Navel Jelly my bare frames during construction delays....
12-08-19, 10:40 PM
Replies: 6
Views: 207
Posted By Andrew R Stewart

The difference between enclosed cam and open cam...

The difference between enclosed cam and open cam QR units is a frequent topic here. So to is the axle extension beyond the lock nut WRT the drop out's thickness and does the QR bottom out bon that...
Forum: Framebuilders
12-08-19, 10:36 PM
Replies: 16
Views: 2,073
Posted By Andrew R Stewart

I think any frame stiffness differences (between...

I think any frame stiffness differences (between more or less Bb drop) is a minor amount. Likely less then a few PSI in one's tires or a half turn of the spoke nipples change in tension. Now how the...
Forum: Framebuilders
12-08-19, 09:39 PM
Replies: 16
Views: 2,073
Posted By Andrew R Stewart

Richard Sachs has said, about his CX frames, that...

Richard Sachs has said, about his CX frames, that he uses a pretty standard road drop (of BB). That the taller tire profiles provide the added pedal clearance that CX might need. Andy
Forum: Framebuilders
12-08-19, 09:35 PM
Replies: 11
Views: 203
Posted By Andrew R Stewart

The choice, for or against, to do a fillet frame...

The choice, for or against, to do a fillet frame has nothing to do with strength. That either style of joining has added strength about the HT ends is the issue.

But bikingman isn't correct in...
Forum: Framebuilders
12-08-19, 08:57 PM
Replies: 16
Views: 2,073
Posted By Andrew R Stewart

My first reaction was don't limit the BB drop...

My first reaction was don't limit the BB drop relative to only the rear axle height/tire radius. Terry type bikes and suspension come to mind...

Certainly BB drop is a factor in how a bike feels...
12-08-19, 08:39 PM
Replies: 11
Views: 331
Posted By Andrew R Stewart

Watch what you say. Back when I was starting out...

Watch what you say. Back when I was starting out these (and the single BB supporting A&J stands) were the standard. We got the work done with the tools we had, just like these days. I can't wait till...
Forum: Framebuilders
12-08-19, 01:29 PM
Replies: 14
Views: 877
Posted By Andrew R Stewart

This! It's what I do. I have Alex Meade turn a...

This! It's what I do. I have Alex Meade turn a cone that slips over the Campy BB cutter's pilot shaft and nestles into the Itl. BB thread. The single Itl. shell tap cuts either side. Andy
Forum: Framebuilders
12-08-19, 01:26 PM
Replies: 11
Views: 203
Posted By Andrew R Stewart

The rings are more to prevent the HT ends from...

The rings are more to prevent the HT ends from expanding when a headset is pressed in. On a lugged frame it's the lug that provides that extra strength. On a luggless frame something else (the...
Forum: Framebuilders
12-08-19, 10:13 AM
Replies: 16
Views: 275
Posted By Andrew R Stewart

Packing a blade with sand is more about keeping...

Packing a blade with sand is more about keeping the blade from widening/flattening in cross section at the bend then is about making the bend consistent. But I've never done it so what do I know. Andy
Forum: Framebuilders
12-08-19, 10:09 AM
Replies: 11
Views: 203
Posted By Andrew R Stewart

Head tube reinforcing rings have had fillets at...

Head tube reinforcing rings have had fillets at their edges so there is no "shore line". Andy
Forum: Framebuilders
12-08-19, 12:52 AM
Replies: 11
Views: 203
Posted By Andrew R Stewart

Another many year project

Started this frame about two months ago. I can get pretty single minded sometimes... Now I need to break for the holidays. It's almost done. Here's a shot of positioning the head badge prior to...
Forum: Framebuilders
12-07-19, 10:27 PM
Replies: 14
Views: 358
Posted By Andrew R Stewart

[QUOTE=unterhausen;21236682]if riding a mountain...

[QUOTE=unterhausen;21236682]if riding a mountain bike has taught me anything, it's that you don't really want all that much vertical compliance in the frame unless you are hitting big rocks. I know...
Forum: Framebuilders
12-07-19, 11:32 AM
Replies: 14
Views: 358
Posted By Andrew R Stewart

The best "modern" example of taking advantage of...

The best "modern" example of taking advantage of a chain stay's orientation for flex is hingless rear suspended stuff that use a flat plate, horizontal WRT the ground, as the stay yoke. I forget who...
12-07-19, 11:27 AM
Replies: 5
Views: 137
Posted By Andrew R Stewart

Jeez, you're the one who pulled out the old cable...

Jeez, you're the one who pulled out the old cable and replaced it. Did you find anything wrong with it? You're the one who made it work again. What did you do? I think you already have your answer...
12-07-19, 11:15 AM
Replies: 21
Views: 252
Posted By Andrew R Stewart

Placing a small drop of thin lube on each spoke...

Placing a small drop of thin lube on each spoke nipple/rim hole contact will eliminate that potential source, at least for a little while.

I somewhat disagree with Stuart though. The wheel...
Forum: Framebuilders
12-06-19, 09:02 PM
Replies: 16
Views: 275
Posted By Andrew R Stewart

Did you braze in the drop out first? Andy

Did you braze in the drop out first? Andy
12-06-19, 10:04 AM
Replies: 14
Views: 312
Posted By Andrew R Stewart

Why? Andy

Why? Andy
12-05-19, 09:32 AM
Replies: 14
Views: 296
Posted By Andrew R Stewart

The mentioned devices are meant to retain the...

The mentioned devices are meant to retain the chain during shifting when pedaling forward, not back pedaling. The little tabs/blocks reside on the upper half of the chainrings and back pedaling drop...
12-03-19, 06:15 PM
Replies: 24
Views: 325
Posted By Andrew R Stewart

One aspect of roller bearings is the force the...

One aspect of roller bearings is the force the rollers see that pushes them lengthwise. In a well designed balled bearing the curve of the races trap the balls in a "just right" location. With a...
Forum: Framebuilders
12-03-19, 10:04 AM
Replies: 9
Views: 262
Posted By Andrew R Stewart

Eric's suggestion is exactly what I did when I...

Eric's suggestion is exactly what I did when I returned home after a 25 year absence. Unfortunately the group I found had wooden floors and thus insurance prevented any flame or sparks from being...
12-02-19, 09:16 PM
Replies: 21
Views: 618
Posted By Andrew R Stewart

The fractured ice that PP references suggests...

The fractured ice that PP references suggests that water penetration, not too thick a lube, is the source of his problems.

Some areas don't use road salt like the Great Lakes region does. The...
12-02-19, 08:56 PM
Replies: 24
Views: 325
Posted By Andrew R Stewart

I expected that John would chime in on this...

I expected that John would chime in on this thread. We have both used many Stronglight roller bearing headsets but have rather different opinions.

If you have plastic head tube cups/cones then you...
12-02-19, 08:21 PM
Replies: 3
Views: 150
Posted By Andrew R Stewart

By discovering the arm's interface with the axle,...

By discovering the arm's interface with the axle, the arm's shape (straight or some "s" curve) and the arm's length (and pedal threading but most all are the common 9/16"x20TPI). Andy
12-01-19, 09:36 PM
Replies: 43
Views: 854
Posted By Andrew R Stewart

To a degree yes. However the shell faces are also...

To a degree yes. However the shell faces are also about getting the BB (whatever type) securely tightened. A shell with cockeyed faces won't allow the BB RH (usually the RH) side to fully snug up and...
12-01-19, 05:20 PM
Replies: 9
Views: 374
Posted By Andrew R Stewart

What size is this tube/tire combo? The tube looks...

What size is this tube/tire combo? The tube looks to has spots of stretch that haven't completely receded back to original shape. Is the tube small for the tire's width? The other reason why tubes...
12-01-19, 05:16 PM
Replies: 21
Views: 618
Posted By Andrew R Stewart

While winter riding calls for thinner lubes then...

While winter riding calls for thinner lubes then the hot summers do in this case it's the presence of (first) lube and it's barrier to water penetration (second) that help offset repeating of the...
12-01-19, 05:09 PM
Replies: 9
Views: 374
Posted By Andrew R Stewart

Most will replace the tube at this point....

Most will replace the tube at this point. Patching on top of an existing patch isn't very reliable.

To speculate- It looks like the tube is being allowed to expand past the tire/rim's enclosure....
12-01-19, 04:34 PM
Replies: 43
Views: 854
Posted By Andrew R Stewart

For the numbers of external to shell bearings...

For the numbers of external to shell bearings (Hollowtech) sold and their relative mid to better grades (as they are on more expensive bikes typically) I will say that we replace a lot. For the most...
12-01-19, 04:28 PM
Replies: 7
Views: 241
Posted By Andrew R Stewart

I think you are dealing with two different...

I think you are dealing with two different issues.

The first I suspect to be a freewheel/freehub body bearing noise. Only when coasting and from the rear wheel. When under little load (as on the...
12-01-19, 04:17 PM
Replies: 21
Views: 618
Posted By Andrew R Stewart

How cold does the bike get when stored? If water...

How cold does the bike get when stored? If water gets inside the ratchet (be it a freewheel or cassette) and then freezes it can cause either full lock up or spinning both rotational directions, as...
12-01-19, 10:40 AM
Replies: 7
Views: 334
Posted By Andrew R Stewart

Don't expect any shop or business to have the OEM...

Don't expect any shop or business to have the OEM lever parts as these Ofmega components were pretty uncommon even when they were current. But with friction levers one can mix and match far more...
12-01-19, 10:36 AM
Replies: 7
Views: 448
Posted By Andrew R Stewart

Sounds like some sort of cable casing covering,...

Sounds like some sort of cable casing covering, about the correct ID for a casing to slide into and might be cut for fit. Perhaps tp protect the paint from casing rub? Andy
11-30-19, 09:03 PM
Replies: 7
Views: 334
Posted By Andrew R Stewart

No brand or model, no location or style of...

No brand or model, no location or style of shifter.

With friction levers when the friction "pack" (the various washers/spacers and lever that are snugged up tight to provide the friction) is...
11-29-19, 10:00 AM
Replies: 33
Views: 3,234
Posted By Andrew R Stewart

Found the old post I was mentioning. Andy ...

Found the old post I was mentioning. Andy https://www.bikeforums.net/bicycle-mechanics/925854-front-wheel-turns-hard-right.html
11-28-19, 10:01 PM
Replies: 23
Views: 477
Posted By Andrew R Stewart

Not if the second photo is also the way the lower...

Not if the second photo is also the way the lower bearing was installed on reassembly. But I do question the match between the lower bearing and the crown race WRT their mating conical angles. I also...
11-28-19, 09:55 PM
Replies: 33
Views: 3,234
Posted By Andrew R Stewart

Here are a couple of threads I've posted about...

Here are a couple of threads I've posted about frame alignment in. I can't find my more descriptive posts, I'm no search expert and I didn't record every reply I've done on alignment. But there are...
11-28-19, 09:06 PM
Replies: 48
Views: 1,176
Posted By Andrew R Stewart

Buy a set and sock it away for your children's...

Buy a set and sock it away for your children's inheritance. Andy (who's not going to spend that kind of money on stuff made to only be prettier)
11-28-19, 09:02 PM
Replies: 8
Views: 295
Posted By Andrew R Stewart

My only comment might not even apply, the OP's...

My only comment might not even apply, the OP's description is so lacking I'm not really sure what is going on. BUT, a 3mm increase of fastener diameter (from .5cm to .8cm) is a HUGE increase in both...
Forum: Framebuilders
11-27-19, 09:31 PM
Replies: 17
Views: 499
Posted By Andrew R Stewart

Yes, the ST and HT being co-planer is the most...

Yes, the ST and HT being co-planer is the most likely aspect to have been affected. With a good eye one can view diagonally "through" the main frame and watch the sliver of backround between the...
Forum: Framebuilders
11-27-19, 08:39 PM
Replies: 17
Views: 499
Posted By Andrew R Stewart

"Certified framebuilder"? Certified by who?...

"Certified framebuilder"? Certified by who? (Reynolds was the only company that had a certification process that I know of. Back in the late 1970s when 753 was still the hot tubeset.)

I would...
11-27-19, 08:27 PM
Replies: 20
Views: 628
Posted By Andrew R Stewart

Make sure that the generator's axis is in line...

Make sure that the generator's axis is in line with the wheel's axle. If the generator is off angle the "roller" will scuff and abrade the tire at a faster/louder rate. Slip on rubber caps, for the...
11-25-19, 09:32 PM
Replies: 28
Views: 676
Posted By Andrew R Stewart

When fixing skis we learned to only tighten the...

When fixing skis we learned to only tighten the clamps, holding the two parts together, partially for the first period of bonding set up. Then after a bit fully tighten the clamps down. Much like...
11-24-19, 08:45 PM
Replies: 11
Views: 311
Posted By Andrew R Stewart

I suspect the factory cleaning wasn't as complete...

I suspect the factory cleaning wasn't as complete as it might have been (left over brazing flux can be worse then salt in advancing corrosion), there was no after finishing rust inhibitor applied and...
11-24-19, 08:31 PM
Replies: 13
Views: 750
Posted By Andrew R Stewart

Not at all what I had thought. Also not what I...

Not at all what I had thought. Also not what I would want given the long sloping tops to the hooks. Good luck. Andy
Forum: Framebuilders
11-24-19, 08:23 PM
Replies: 5
Views: 354
Posted By Andrew R Stewart

I'll add that most dents are in the less stressed...

I'll add that most dents are in the less stressed mid sections of tubes. So the after repairs are subject to less forces then the tube ends where undercutting (from heavy handed filing or poor...
Showing results 1 to 50 of 1000
 


 
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