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Search: Posts Made By: Andrew R Stewart
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12-01-22, 03:54 PM
Replies: 11
Views: 147
Posted By Andrew R Stewart

Yes, my reading issues have been around since...

Yes, my reading issues have been around since before kids got all sorts of "labels" when in school. Still most of my reply holds water. Andy
12-01-22, 03:52 PM
Replies: 10
Views: 208
Posted By Andrew R Stewart

Well made cup and cone units with periodic...

Well made cup and cone units with periodic maintenance do work well. I ran Campy NR hubs for years, overhauling 2 or 3 times a season motivated by rain/conditions ridden. I replaced a very few cones...
12-01-22, 12:28 PM
Replies: 17
Views: 233
Posted By Andrew R Stewart

For the same rider/bike weight and same speed the...

For the same rider/bike weight and same speed the energy needed to remove to slow down should be the same, regardless of the brake in use. However how that brake design handles the heat will be...
Forum: Framebuilders
12-01-22, 11:55 AM
Replies: 23
Views: 1,955
Posted By Andrew R Stewart

Thanks for the update. Andy

Thanks for the update. Andy
12-01-22, 10:00 AM
Replies: 11
Views: 147
Posted By Andrew R Stewart

Glad to hear that riders didn't suffer in the...

Glad to hear that riders didn't suffer in the incident (and I rarely call a bike crash an accident). Been there and did that a few times myself (walking home with the bike on one's shoulder gives one...
12-01-22, 09:49 AM
Replies: 32
Views: 568
Posted By Andrew R Stewart

John, like me, looks to be a sort of historian of...

John, like me, looks to be a sort of historian of design. I had the great opportunity to work for a shop that collected turn of the century (the1899/1900 turn, they considered WW1 as their cut off...
12-01-22, 09:20 AM
Replies: 17
Views: 233
Posted By Andrew R Stewart

Always nice to have more data:) Given the lever...

Always nice to have more data:) Given the lever control for the roller brake and the pedal operated aspect of the coaster brake I vote for the roller to be used. Andy
11-30-22, 09:14 PM
Replies: 32
Views: 568
Posted By Andrew R Stewart

BioPace, U brakes, "X" frame design... a classic...

BioPace, U brakes, "X" frame design... a classic example of the early 1990s attempts to better the MtB experience. At least Bianchi saw the reason to not install the rear U brake on the chainstay
...
11-30-22, 09:06 PM
Replies: 17
Views: 233
Posted By Andrew R Stewart

To the OP's defense they didn't even mention a...

To the OP's defense they didn't even mention a front brake. So my comment was not in response to any prompt from them. Andy
11-30-22, 02:26 PM
Replies: 17
Views: 233
Posted By Andrew R Stewart

Most all the roller brakes I have serviced and...

Most all the roller brakes I have serviced and test ridden after suffered from "mushy" feel. I don't like this. However I more don't like the lack of backpedaling ability so will never run a pedal...
Forum: Framebuilders
11-30-22, 02:19 PM
Replies: 2
Views: 93
Posted By Andrew R Stewart

A few, or more, years ago I read of Jim's getting...

A few, or more, years ago I read of Jim's getting out of the sharpening business. But I had no reason to seek him out at that time so didn't do more than file away that note. IIRC he sharpened my...
Forum: Framebuilders
11-30-22, 11:32 AM
Replies: 13
Views: 269
Posted By Andrew R Stewart

I have serviced a number of Ti bike that had a...

I have serviced a number of Ti bike that had a shim insert in the seat tube but as these were not a problem never spent much time exploring in detail. However I have read of both a press fit and a...
Forum: Framebuilders
11-29-22, 08:50 PM
Replies: 13
Views: 269
Posted By Andrew R Stewart

Steve- I think you will get similar replies as...

Steve- I think you will get similar replies as you did in the Bike Mechanics thread you started (70+ replies to date).

One of the questions i had, in that other thread, is if the seat post fit is...
11-28-22, 09:10 AM
Replies: 32
Views: 568
Posted By Andrew R Stewart

A steel frame will transfer to an Al post a...

A steel frame will transfer to an Al post a surface amount of rust. Unsure if that's what is the case here.
I'd rather see rust on an Al post then AlOxide:) Andy
11-28-22, 09:07 AM
Replies: 3
Views: 179
Posted By Andrew R Stewart

This type of need is why those who fix up bike a...

This type of need is why those who fix up bike a bunch (neighbors, family, friends or flipping) should have a good relationship with a LBS. Not only can they give the usual advise but have much more...
11-27-22, 08:48 PM
Replies: 13
Views: 271
Posted By Andrew R Stewart

More data would help us help you. QR or nutted...

More data would help us help you. QR or nutted axle? Cassette or freewheel? Its tough for us when you use mixed dimensions (hubs with tires). Yes, 26"/559 ISO wheels can be had with a 135 wide...
Forum: Framebuilders
11-27-22, 10:07 AM
Replies: 5
Views: 167
Posted By Andrew R Stewart

Tom- Did you apply a rust inhibitor (FrameSaver)...

Tom- Did you apply a rust inhibitor (FrameSaver) inside the tubes too? If not than I would just use a solvent first, maybe kerosene or a SafetyKleen shop tank. Any chemical paint removal should be...
Forum: Framebuilders
11-24-22, 03:28 PM
Replies: 14
Views: 319
Posted By Andrew R Stewart

I visited one of our community's maker spaces...

I visited one of our community's maker spaces shortly after I had moved back to Rochester. After a couple of evenings I decided to not return, Not because of the management or space (although the ban...
Forum: Framebuilders
11-24-22, 10:08 AM
Replies: 5
Views: 347
Posted By Andrew R Stewart

Not touch the decals during the paint rubbing...

Not touch the decals during the paint rubbing out??? How clean are you aiming for. There are auto industry products that are made for this stuff. Will there be an after cleaning clear coat?

I had...
Forum: Framebuilders
11-24-22, 09:59 AM
Replies: 14
Views: 319
Posted By Andrew R Stewart

Eric- I have rocked my 350lbish 2x3 cast surface...

Eric- I have rocked my 350lbish 2x3 cast surface plate up and onto 2 of the 3 pads when cold setting a built frame's main triangle before. Took a 1" bar bell shaft about 4 feet long. What amazed me...
11-24-22, 09:25 AM
Replies: 23
Views: 407
Posted By Andrew R Stewart

"Also be aware that Shimano 11-speed front...

"Also be aware that Shimano 11-speed front derailleurs use virtually no slack in the cable, unlike previous 8-, 9-, and 10-speed generations. Then there is the matter of the converter pin, whose...
11-23-22, 10:09 PM
Replies: 23
Views: 407
Posted By Andrew R Stewart

I don't care too much about the BB's being...

I don't care too much about the BB's being centered as it's the rings and crank arms that my body interfaces with. The BB only get those parts where the rest of the bike and my body can deal with...
Forum: Framebuilders
11-23-22, 04:49 PM
Replies: 14
Views: 319
Posted By Andrew R Stewart

MY first thought is how stiff the table saw top...

MY first thought is how stiff the table saw top is with such a localized force clamped to it (the whipping post). Most pre made posts I've seen have a fairly small diameter base.

Second was that...
Forum: Framebuilders
11-23-22, 04:35 PM
Replies: 21
Views: 1,295
Posted By Andrew R Stewart

Doug's Anvil mitering fixture wasn't there when I...

Doug's Anvil mitering fixture wasn't there when I did the brazing class. We used his old one that is based on a huge collet chuck, the collets were swapped out for each tube diameter. I was so...
11-23-22, 04:27 PM
Replies: 7
Views: 167
Posted By Andrew R Stewart

As usual, good advice. One can rotate the...

As usual, good advice. One can rotate the caliper/center bolt unit a bit past center so that when the backing nut is fully tight and the center bolt did it's slight spin thing it ends up on center....
11-23-22, 10:05 AM
Replies: 30
Views: 469
Posted By Andrew R Stewart

Before the cable and housing is replaced look at...

Before the cable and housing is replaced look at the original set up for any possibl;e changes with the new. The imaged housing damage is likely from rubbing against a tire or some other thing....
11-23-22, 09:56 AM
Replies: 23
Views: 407
Posted By Andrew R Stewart

"the cranks (not OEM) are not centered" with...

"the cranks (not OEM) are not centered" with respect to what? A published chain line dimension?

It seems to me that the spacers placed on the non drive side was done to allow better ft shifting...
11-22-22, 07:07 PM
Replies: 24
Views: 508
Posted By Andrew R Stewart

This topic, frame/fork alignment, has been...

This topic, frame/fork alignment, has been discussed many times before. There's quite a number of threads one can search for. here's one from 2017 where I describe a low cost "home" alignment check. ...
11-22-22, 09:39 AM
Replies: 37
Views: 776
Posted By Andrew R Stewart

Some carbon frames have had a release agent...

Some carbon frames have had a release agent applied to the insides of the frame, to better allow the compression bladder to be removed after inflation and curing.

Epoxy makes for a poor...
11-21-22, 09:14 PM
Replies: 20
Views: 351
Posted By Andrew R Stewart

Perhaps but with most current bikes having...

Perhaps but with most current bikes having vertical drop outs and the drive side QR portion is a simple nut and bolt (compared to the LH side's cam and pivot) I still suggest a rocking force is at...
11-21-22, 09:57 AM
Replies: 14
Views: 386
Posted By Andrew R Stewart

Back when indexing was just becoming "the way" I...

Back when indexing was just becoming "the way" I use to describe component interchangeability this way. "Everything MicroSoft knows about planned obsolescence and compatibilities was learned from...
11-21-22, 09:53 AM
Replies: 24
Views: 368
Posted By Andrew R Stewart

One issue with ft ders that are intended for 50+...

One issue with ft ders that are intended for 50+ T rings and used with much smaller rings is that the cage's lower edges have a fairly large curvature, to best match up with the larger ring's...
11-20-22, 10:46 PM
Replies: 20
Views: 351
Posted By Andrew R Stewart

I will suggest that a QR skewer noise is not as...

I will suggest that a QR skewer noise is not as much a crank driving the wheel as is the rider's side to side rock/force on the bike. Andy
11-20-22, 09:03 PM
Replies: 20
Views: 351
Posted By Andrew R Stewart

Some hubs (usually cup and cone designs) have an...

Some hubs (usually cup and cone designs) have an external "rubber" seal on the LH side. This seal often has a lip or contoured edge that interfaces with the hub shell. This interface can cause some...
11-20-22, 08:56 PM
Replies: 81
Views: 1,946
Posted By Andrew R Stewart

Seat post fit and sizing is a repeating topic...

Seat post fit and sizing is a repeating topic here. A few years ago i, actually, measured some "27'2"mm posts I have and posted their measurements. here's the link to that thread Another delay seat...
Forum: Framebuilders
11-20-22, 08:36 PM
Replies: 21
Views: 1,295
Posted By Andrew R Stewart

Had a Clausing 85208525 been available when i was...

Had a Clausing 85208525 been available when i was looking I likely would have bought it. But in hindsight and with more experience I am glad that my mill has a R8 spindle taper and not a M2 or B&S #7...
11-20-22, 08:19 PM
Replies: 81
Views: 1,946
Posted By Andrew R Stewart

If only the clamp's ID were the issue one could...

If only the clamp's ID were the issue one could shim just that and the clamp wouldn't be on the edge of closing up. However I agree with Francis in that the slot also looks to be closing up.

If a...
11-20-22, 07:55 PM
Replies: 8
Views: 382
Posted By Andrew R Stewart

Not always so. When looking to expand one's...

Not always so. When looking to expand one's customer list it can pay to service event rides and offer business place (as it is post C19...) visits. I've done event service quite a few times and one...
Forum: Framebuilders
11-20-22, 01:56 PM
Replies: 21
Views: 1,295
Posted By Andrew R Stewart

My mill tuns off a 120V 20A house line. Spindle...

My mill tuns off a 120V 20A house line. Spindle taper is R8 with a home made draw bar. Weighs about 900lbs. Not sure of the year of birth but I suspect early 1980s. It has a mix of metric and SAE...
11-19-22, 10:59 AM
Replies: 7
Views: 203
Posted By Andrew R Stewart

Sure sounds like you're experiencing chain...

Sure sounds like you're experiencing chain friction due to the extreme angles it runs at when in the small/big cogs.

What to do? Live with it as a cost of buying into the "better" system that...
11-19-22, 10:39 AM
Replies: 20
Views: 351
Posted By Andrew R Stewart

2nd vid is much better at providing the noise. I...

2nd vid is much better at providing the noise. I would want to try a few things to see if I could narrow down the source. Remove the chain from the ring and while keeping the chain from touching...
11-18-22, 05:17 PM
Replies: 8
Views: 276
Posted By Andrew R Stewart

Low tire pressures would lend support for my...

Low tire pressures would lend support for my suggestion. If the tire beads did come off the rim's seating ledge too low a pressure (on reinflating the tire) might not have been sufficient to lift the...
11-18-22, 05:07 PM
Replies: 20
Views: 351
Posted By Andrew R Stewart

All I hear is the ratchet clicks and some...

All I hear is the ratchet clicks and some breathing, no undo noise. But I'll bet someone here mentions checking the der hanger alignment (which seems to be a favorite thing to blame for all kinds of...
11-18-22, 01:23 PM
Replies: 9
Views: 188
Posted By Andrew R Stewart

As long as the rim's interior has no spoke nipple...

As long as the rim's interior has no spoke nipple access holes, or nipple heads sticking above the rim bed, no liner is needed.

By "mag wheels" I assume you mean a compression spoked wheel, and...
11-17-22, 08:01 PM
Replies: 8
Views: 276
Posted By Andrew R Stewart

A sometimes thing is when a bike sits around for...

A sometimes thing is when a bike sits around for a long time and the tires have bled down in pressure so much that the tire's beads become unseated. Then the bike is pulled out and the tires are...
11-16-22, 11:50 AM
Replies: 14
Views: 4,162
Posted By Andrew R Stewart

There are times when the intended post size...

There are times when the intended post size didn't fit a specific frame due to heat related distortion. The usual fix is to use the next size smaller post, faster then addressing the seat tube side...
11-16-22, 11:39 AM
Replies: 8
Views: 328
Posted By Andrew R Stewart

Some low cost pedals use a bushing at the...

Some low cost pedals use a bushing at the inner/thicker end. While a bushing is a bearing it isn't one with balls. Andy
11-16-22, 11:35 AM
Replies: 50
Views: 1,520
Posted By Andrew R Stewart

When I had my own shop in the 1990s I did a...

When I had my own shop in the 1990s I did a monthly sales as a % of year total sales assessment. IIRC the numbers were J- 2%, F- 3%, M- 7%, A- 10%, M- 15%, J- 18%, J- 16%, A- 12%, S- 8%, O- 4.5%, N-...
11-15-22, 10:36 PM
Replies: 8
Views: 328
Posted By Andrew R Stewart

Peter?- Looks like a radial contact cartridge...

Peter?- Looks like a radial contact cartridge bearing which will have no cone, the "lock nut" is only to secure the bearings/axle and has no bearing load aspect.

One trick that I've used for this...
11-14-22, 06:28 PM
Replies: 7
Views: 166
Posted By Andrew R Stewart

Many of the removable (thus threaded into a...

Many of the removable (thus threaded into a welded on base) brake boss use a thread locking compound to add extra insurance from a boss loosening from its base. Andy
Showing results 1 to 50 of 1000
 


 
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