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Search: Posts Made By: Andrew R Stewart
Showing results 1 to 50 of 1000
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Forum: Framebuilders
12-04-22, 10:47 PM
Replies: 5
Views: 77
Posted By Andrew R Stewart

RivNuts are rivets WRT how they are secured in...

RivNuts are rivets WRT how they are secured in place. So if one files/sands down the exposed lip you remove ability for the RiveNut to be a rivet. Although there will likely be enough friction...
12-04-22, 08:37 PM
Replies: 3
Views: 103
Posted By Andrew R Stewart

Back in the day we considered "polishing" a cone...

Back in the day we considered "polishing" a cone to be producing a mirror finish on a new cone. What is considered here might be better called "regrinding" a cone, much like an engine's valve...
12-04-22, 04:57 PM
Replies: 3
Views: 90
Posted By Andrew R Stewart

As long as the replacement will fit the hub's...

As long as the replacement will fit the hub's axle ends and position the hub/rim/wheel properly WRT the frame and fit the drop outs and fit the QR skewer they will work.

But the fitting the axle...
12-04-22, 11:05 AM
Replies: 7
Views: 118
Posted By Andrew R Stewart

With about 3" of threading on your fork I am...

With about 3" of threading on your fork I am concerned about the stem's wedge sitting within that threaded portion. That would be bad and most fork makers won't warranty the fork after the stem...
12-04-22, 09:50 AM
Replies: 7
Views: 118
Posted By Andrew R Stewart

The pipe to be pressed down by the lock nut will...

The pipe to be pressed down by the lock nut will need to be a fairly exact length. So one would need to make the pipe anew for every bike they do this job on. The amount of force to press the crown...
12-04-22, 09:45 AM
Replies: 3
Views: 70
Posted By Andrew R Stewart

Drop bar diameters range from 22.2 to 24.5mm...

Drop bar diameters range from 22.2 to 24.5mm aprox. for common ones. A little while ago some brand offered a bigger diameter but I haven't seen them any longer. No surprise as the levers being made...
12-04-22, 09:37 AM
Replies: 29
Views: 1,143
Posted By Andrew R Stewart

No, the surface plate is far flatter than my...

No, the surface plate is far flatter than my ability to ride a straight line:) The plate was a B day present from my first wife. I made a wood cover for it to add one more trash collecting surface...
12-03-22, 09:23 PM
Replies: 8
Views: 180
Posted By Andrew R Stewart

No description as to which spokes seem tight or...

No description as to which spokes seem tight or less so. Again, on a bike there will be a variation of spoke tensions due to wheel design and placement. Can you be more specific as to which wheel and...
12-03-22, 09:06 PM
Replies: 4
Views: 178
Posted By Andrew R Stewart

With the mild grade of steel that this bike is...

With the mild grade of steel that this bike is likely made from its no surprise that a sort of press fit cup would loosen up. Seen it often enough with BB and headsets on bikes with similar...
Forum: Framebuilders
12-03-22, 06:49 PM
Replies: 4
Views: 149
Posted By Andrew R Stewart

While I agree with trying to clean off the stuff...

While I agree with trying to clean off the stuff I disagree with the opinion of nice paint. Note the thin coating at many of the corners, the pump peg is especially poorly done. Any of these thin...
12-03-22, 06:14 PM
Replies: 16
Views: 210
Posted By Andrew R Stewart

I might suggest she tries a recumbent. Or at...

I might suggest she tries a recumbent. Or at least a recumbent exerciser bike to see if the vastly different head/body position works better for her. Andy
12-03-22, 12:34 PM
Replies: 16
Views: 210
Posted By Andrew R Stewart

Not about the specific question but might be a...

Not about the specific question but might be a factor anyway- As one raises the upper body weight shifts to the rider's butt. Often one finds that the narrow drop bar saddle to no longer support the...
12-03-22, 12:24 PM
Replies: 8
Views: 180
Posted By Andrew R Stewart

Which set of spokes? Most rim braked bike ft...

Which set of spokes? Most rim braked bike ft wheels have the same tension for both sides of the wheel. Rears, and disk ft wheels usually have a dish which requires one side's spokes to be higher...
12-03-22, 10:11 AM
Replies: 29
Views: 1,143
Posted By Andrew R Stewart

The rug is a fake. That version of my shop was...

The rug is a fake. That version of my shop was two houses ago and had wall to wall carpeting over the concrete slab. The Persian rug was to better protect the wall to wall stuff. Andy
12-03-22, 10:06 AM
Replies: 9
Views: 208
Posted By Andrew R Stewart

I would not soak metal parts in a solvent...

I would not soak metal parts in a solvent overnight. Some solvents can encourage hydrogen embrittlement if left in contact long enough. Now spraying a layer of WD40 on the parts to be cleaned to...
12-03-22, 09:58 AM
Replies: 6
Views: 196
Posted By Andrew R Stewart

Well, for the splitters shown the inner cables...

Well, for the splitters shown the inner cables must be exposed. I know of no splitter that can work with an inner cable still inside housing. If the frame has round tubes it's not hard to make (or...
12-03-22, 09:53 AM
Replies: 29
Views: 1,143
Posted By Andrew R Stewart

I would not suggest a rubber topped bench. Now...

I would not suggest a rubber topped bench. Now having a sheet of a "rubber" that can be moved about as needed... I have one of the self healing cutting boards with layout lines on it on one of my...
12-01-22, 03:54 PM
Replies: 16
Views: 258
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: 13
Views: 313
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: 20
Views: 313
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: 1,995
Posted By Andrew R Stewart

Thanks for the update. Andy

Thanks for the update. Andy
12-01-22, 10:00 AM
Replies: 16
Views: 258
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: 602
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: 20
Views: 313
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: 602
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: 20
Views: 313
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: 20
Views: 313
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: 111
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: 296
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: 296
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: 602
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: 4
Views: 229
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: 299
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: 177
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: 340
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: 366
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: 340
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: 414
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: 414
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: 340
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: 1,302
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: 169
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: 470
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: 414
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: 511
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: 39
Views: 828
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: 359
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: 401
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: 373
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: 359
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
Showing results 1 to 50 of 1000
 


 
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