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Search: Posts Made By: Andrew R Stewart
Showing results 1 to 50 of 1000
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Forum: Bicycle Mechanics
06-03-24, 07:55 PM
Replies: 5
Views: 181
Posted By Andrew R Stewart

At one time Thompson made a 28mm post. Andy

At one time Thompson made a 28mm post. Andy
Forum: Bicycle Mechanics
06-03-24, 09:29 AM
Replies: 10
Views: 178
Posted By Andrew R Stewart

Not saying this is the OP's actual issue but if...

Not saying this is the OP's actual issue but if the shifter cabled are intertwined with each other a shift on the rear will telephone movement to the ft, and when the front is shifted the rear cable...
Forum: Bicycle Mechanics
06-03-24, 09:26 AM
Replies: 7
Views: 345
Posted By Andrew R Stewart

When I soak shifter pods in solvent (used both...

When I soak shifter pods in solvent (used both Safety Clean and a more recent bio based detergent at work) I remove the pod from the lever body. For road this is done by pulling the pivot pin, its...
Forum: Bicycle Mechanics
06-02-24, 02:51 PM
Replies: 43
Views: 1,188
Posted By Andrew R Stewart

Mike- I have two versions of the ATOC tandem...

Mike- I have two versions of the ATOC tandem rack.The first uses a standard QR skewer, has short section tire tray and the tandem extension was had fitted during production. The second is the more...
Forum: Bicycle Mechanics
06-01-24, 10:37 AM
Replies: 6
Views: 280
Posted By Andrew R Stewart

I had heard of the sale but not much about the...

I had heard of the sale but not much about the shop after. (I still see Jeff's Facebook postings here and there). It's sad to hear of this kind of stuff, a great shop gets sold and the new doesn't...
Forum: Bicycle Mechanics
06-01-24, 08:24 AM
Replies: 6
Views: 280
Posted By Andrew R Stewart

One can make a decent enough dishing gage with a...

One can make a decent enough dishing gage with a table top and three equally high stacks of spacers (washers, coins, thread spools, Lego Blocks...). Place the wheel, with any QR/through axle removed,...
Forum: Bicycle Mechanics
06-01-24, 08:09 AM
Replies: 11
Views: 443
Posted By Andrew R Stewart

I've seen a lot of US made Cannondales that had...

I've seen a lot of US made Cannondales that had broken off cable fittings. Fewer with chainstay stops damaged but it does happen. One challenge that Cannondales had in greater amounts then other AL...
Forum: Bicycle Mechanics
05-31-24, 08:37 PM
Replies: 23
Views: 703
Posted By Andrew R Stewart

I know of a few formulas to determine chain...

I know of a few formulas to determine chain length but usually let the system tell me what length works best. I'll start with a long chain and see how the various aspects work (shifting response in...
Forum: Bicycle Mechanics
05-31-24, 07:50 AM
Replies: 23
Views: 703
Posted By Andrew R Stewart

While I would agree with your above comment had...

While I would agree with your above comment had it been posted before the OP's post, #4. But the quote you choose to start your post with to me suggests that the OP is learning more about how to...
Forum: Framebuilders
05-30-24, 06:30 PM
Replies: 7
Views: 242
Posted By Andrew R Stewart

I just replied to a thread on the Classic...

I just replied to a thread on the Classic Rendezvous group about paint stripping. I, too, wish there were chemical strippers still around that did small "cash" jobs. No matter how one goes about it...
Forum: Framebuilders
05-30-24, 02:19 PM
Replies: 7
Views: 242
Posted By Andrew R Stewart

Interesting mix of frame styles, including what...

Interesting mix of frame styles, including what might be a S&S coupled frame "half". My first thought was a bunch of Asian made frames waiting for the primer. Taking a longer look I'm not sure...
Forum: Framebuilders
05-30-24, 07:29 AM
Replies: 4
Views: 219
Posted By Andrew R Stewart

"Could a 270lbs rider reasonably ride an EL OS...

"Could a 270lbs rider reasonably ride an EL OS frame?"
Sure but if they are a stomper pedaling squares they likely would find a stouter frame to be a nicer ride. There's no real black and white...
Forum: Bicycle Mechanics
05-30-24, 07:10 AM
Replies: 23
Views: 703
Posted By Andrew R Stewart

And I think this is what the OP just did by...

And I think this is what the OP just did by observing the chain run while someone else rode the bike. Andy
Forum: Bicycle Mechanics
05-28-24, 05:59 PM
Replies: 21
Views: 462
Posted By Andrew R Stewart

If all the usual items (headset, hub, suspension...

If all the usual items (headset, hub, suspension fork) check out OK, and nicely adjusted, it might be the front brake pads slopping a bit within the caliper. Although this usually has a small amount...
Forum: Bicycle Mechanics
05-27-24, 12:14 PM
Replies: 13
Views: 404
Posted By Andrew R Stewart

All above are good replies. We really need far...

All above are good replies. We really need far more info before we might suggest the fork could be or shouldn't be straightened. So photos with "clean" perspectives and using objects like a yard...
Forum: Bicycle Mechanics
05-27-24, 11:12 AM
Replies: 28
Views: 600
Posted By Andrew R Stewart

Gee, thanks for this advice. And so nicely given...

Gee, thanks for this advice. And so nicely given too... (hoping my sarcasm is showing)

This bike likely has many more miles of service to it's owner if they wish. Will it wish for service and...
Forum: Bicycle Mechanics
05-27-24, 08:01 AM
Replies: 26
Views: 692
Posted By Andrew R Stewart

"Andrew et al thinks the wide width is causing...

"Andrew et al thinks the wide width is causing the bead to drop" - icemilkcoffee

No, I tried to suggest that a way wide tire (compared to the rim width) will help the tire bead not contact the rim...
Forum: Bicycle Mechanics
05-26-24, 09:01 AM
Replies: 10
Views: 350
Posted By Andrew R Stewart

I agree, take the bike back to the shop that sold...

I agree, take the bike back to the shop that sold it to you. Most shops have an after purchase follow up servicing as part of their sales policies. Oh wait! You did buy from a shop where you can look...
Forum: Bicycle Mechanics
05-26-24, 08:37 AM
Replies: 26
Views: 692
Posted By Andrew R Stewart

IME you would be wrong. Very wide tires mounted...

IME you would be wrong. Very wide tires mounted onto a narrow rim does increase the bead's ability to slip up/off the rim edge and allow the tire to burp. But you already knew that as you posted...
Forum: Bicycle Mechanics
05-25-24, 06:50 AM
Replies: 26
Views: 692
Posted By Andrew R Stewart

My short answer is to not run those rims tubeless...

My short answer is to not run those rims tubeless and if you have to be tubeless get a rim that interfaces with the tire in a more positive manor.

Burping air on cornering is a "too little air...
Forum: Bicycle Mechanics
05-24-24, 07:40 PM
Replies: 4
Views: 139
Posted By Andrew R Stewart

The hex screw sounds like the fastener that...

The hex screw sounds like the fastener that secures an entry port "fitting". Some companies use a removable (at least till the tiny screw becomes frozen from corrosion) cover plate that has the cable...
Forum: Bicycle Mechanics
05-22-24, 05:36 PM
Replies: 16
Views: 472
Posted By Andrew R Stewart

That you've bought into the modern view of how...

That you've bought into the modern view of how bikes are dealt with... I wonder if a pair of Bicycle Research or Park tire seater pliers would help out. Andy
Forum: Framebuilders
05-21-24, 03:13 PM
Replies: 14
Views: 435
Posted By Andrew R Stewart

[QUOTE=Kontact;23245828]Once the top has been...

[QUOTE=Kontact;23245828]Once the top has been opened with a file, can one close up the bottom via bending?[/QUOTE

Yes but the lower face of the slot won't be parallel to the upper face of the...
Forum: Bicycle Mechanics
05-21-24, 07:28 AM
Replies: 20
Views: 523
Posted By Andrew R Stewart

How did you try moving the front der? By the...

How did you try moving the front der? By the lever, by the cable (and your hand) or did you grab the der cage itself? Can you measure the crank's chainline? (the center of the seat tube to the middle...
Forum: Bicycle Mechanics
05-20-24, 08:03 AM
Replies: 22
Views: 592
Posted By Andrew R Stewart

The Campy (and Shimano) guide pulleys have a free...

The Campy (and Shimano) guide pulleys have a free floating lateral play designed into them (to better align with a cog after a shift, this free play absorbs minor tolerance and adjustment...
Forum: Bicycle Mechanics
05-19-24, 08:23 AM
Replies: 2
Views: 235
Posted By Andrew R Stewart

I long ago learned to not use "punctureless" as...

I long ago learned to not use "punctureless" as the term if the tire still needed air pressure. Simi pneumatic, solid or foam filled tire are examples of what I consider to be true flat proof tires...
Forum: Bicycle Mechanics
05-18-24, 09:30 AM
Replies: 2
Views: 171
Posted By Andrew R Stewart

Look for old grease being glazed or dried out...

Look for old grease being glazed or dried out between the driver and the clutch. The axle bearing adjustment also effects the amount of back pedaling to engage the brake. But just like older IGHs...
Forum: Framebuilders
05-17-24, 10:33 AM
Replies: 31
Views: 1,619
Posted By Andrew R Stewart

Being the age I am I still have a lot of paper...

Being the age I am I still have a lot of paper books and have been drawn to the engineering side of things so I have a few publications with Jim P's writing on my shelf. IIRC it was in the earlier...
Forum: Bicycle Mechanics
05-14-24, 08:20 PM
Replies: 14
Views: 441
Posted By Andrew R Stewart

There's a big difference between how IGHs (and...

There's a big difference between how IGHs (and Pinion to a lesser degree) feel during the shift. How one feels about this is opinion.

Efficiency: I think I can feel the added friction of most...
Forum: Bicycle Mechanics
05-14-24, 03:51 PM
Replies: 14
Views: 441
Posted By Andrew R Stewart

I see the reasons to run an IGH VS a der system...

I see the reasons to run an IGH VS a der system to be less about cost over time and more about how it affects each and every mile I will ride. Andy
Forum: Framebuilders
05-14-24, 01:39 PM
Replies: 3
Views: 295
Posted By Andrew R Stewart

Given the lacking written description I think...

Given the lacking written description I think photos would go a long way to helping us understand what you're working with, parts and frames wise. A bit more on the "Mash up" (which in my youth meant...
Forum: Bicycle Mechanics
05-14-24, 01:32 PM
Replies: 34
Views: 983
Posted By Andrew R Stewart

https://jnsn.imgix.net/globalassets/product-images...

https://jnsn.imgix.net/globalassets/product-images---all-assets/problem-solvers/ca307z02.jpg?w=1000&auto=format&q=70&fit=max

These have been around for a quite a few years. I've installed stops...
Forum: Bicycle Mechanics
05-13-24, 04:05 PM
Replies: 43
Views: 1,389
Posted By Andrew R Stewart

Cats use this but with their whiskers being the...

Cats use this but with their whiskers being the sensors. I can feel a leak on my beard often when I can't hear it. Andy
Forum: Bicycle Mechanics
05-13-24, 04:00 PM
Replies: 6
Views: 350
Posted By Andrew R Stewart

In a shop the imaged front tire is correct and...

In a shop the imaged front tire is correct and the rear tread is in the wrong direction. Mostly because customers expect it. As Francis said unless there's a soft enough surface to allow any tread to...
Forum: Framebuilders
05-13-24, 12:27 PM
Replies: 52
Views: 1,714
Posted By Andrew R Stewart

As far as the wheels go I think you've entered...

As far as the wheels go I think you've entered the weight capacity/loading range of motorcycle wheels and tires. The issue with talking about wheel "strength" is that it is so variable WRT the...
Forum: Bicycle Mechanics
05-13-24, 12:02 PM
Replies: 34
Views: 983
Posted By Andrew R Stewart

I'll second the use of external cabling! Assuming...

I'll second the use of external cabling! Assuming the frame accepts caliper brakes (of some form) and the caliper is designed to accept the end of the cable casing (most center pull calipers don't,...
Forum: Bicycle Mechanics
05-13-24, 09:18 AM
Replies: 7
Views: 345
Posted By Andrew R Stewart

Perhaps it is time for a real solvent soak and...

Perhaps it is time for a real solvent soak and air blast. I usually remove the shift pod/blades unis from the body and soak it in a true solvent for a while, then cycle through the shifter's range...
Forum: Bicycle Mechanics
05-12-24, 07:39 PM
Replies: 15
Views: 470
Posted By Andrew R Stewart

The amount wanted to be removed (the reason and...

The amount wanted to be removed (the reason and some of our opinions are unknown) is pretty much the cutting width of a common metal hack saw blade and much less than those carbide glued to a wire...
Forum: Bicycle Mechanics
05-12-24, 01:50 PM
Replies: 15
Views: 470
Posted By Andrew R Stewart

Since the top of a threadless steerer doesn't...

Since the top of a threadless steerer doesn't need to be particularly square with the axis a simple and quick "eyeball" approach is all that's needed. One trick is to wrap a bit of masking tape...
Forum: Framebuilders
05-10-24, 09:00 PM
Replies: 9
Views: 921
Posted By Andrew R Stewart

A lot has happened since my last addition to this...

A lot has happened since my last addition to this thread. The bike this thread concerns is done and I'm good with the results, at least for now...

I had first used lacquer thinner for the thinning...
Forum: Framebuilders
05-10-24, 07:34 PM
Replies: 17
Views: 731
Posted By Andrew R Stewart

Or in the team car following you... Andy

Or in the team car following you... Andy
Forum: Bicycle Mechanics
05-10-24, 07:27 PM
Replies: 43
Views: 1,389
Posted By Andrew R Stewart

When I use a water dip to find a hole I will...

When I use a water dip to find a hole I will usually encircle the tube with my fingers and slide the hand/fingers along the tube's length as it is under the water. I find a couple/three go rounds...
Forum: Bicycle Mechanics
05-10-24, 06:55 PM
Replies: 43
Views: 1,389
Posted By Andrew R Stewart

Yes. At some point one needs to just move on with...

Yes. At some point one needs to just move on with life and prepare once again for that next flat tire.

I have fixed many flat tires when the cause wasn't found out including those that didn't...
Forum: Bicycle Mechanics
05-10-24, 06:25 PM
Replies: 43
Views: 1,188
Posted By Andrew R Stewart

Yes, as in no cross bars even. I have my roof...

Yes, as in no cross bars even. I have my roof rack installed from about April to November and the car has its alloys and good in wet weather tires (I hate hydroplaning and no longer seek tenths of a...
Forum: Bicycle Mechanics
05-10-24, 10:13 AM
Replies: 16
Views: 355
Posted By Andrew R Stewart

One could try to change the rotational "clocking"...

One could try to change the rotational "clocking" of the rear cog and/or the chainring to see if other rotational arrangements offer less eccentricity. Often there's some slop between the ring and...
Forum: Bicycle Mechanics
05-10-24, 10:09 AM
Replies: 29
Views: 1,122
Posted By Andrew R Stewart

There are (or have been) a few schools for bike...

There are (or have been) a few schools for bike mechanics, UBI comes to mind as example. Barnett's Institute was another (I believe no longer running) school. Both of these were more focused on the...
Forum: Bicycle Mechanics
05-09-24, 07:06 AM
Replies: 27
Views: 814
Posted By Andrew R Stewart

IME when a cartridge bearing wears out...

IME when a cartridge bearing wears out "prematurely" the reason(s) are generally more about the conditions than any bearing grade causes. Radial contact bearings want pretty small tolerances of added...
Forum: Framebuilders
05-08-24, 05:06 PM
Replies: 17
Views: 731
Posted By Andrew R Stewart

How about a trail amount that you wouldn't be...

How about a trail amount that you wouldn't be caught dear riding? Or that fork which has horizontally slotted drop outs to adjust rake and trail that you always meant to make but never got around to....
Forum: Bicycle Mechanics
05-08-24, 06:57 AM
Replies: 10
Views: 408
Posted By Andrew R Stewart

One reason why brake pads seem to stick to the...

One reason why brake pads seem to stick to the rims and sometimes they retract is from excessive pad wear. With cantis the pads swing into the rim in an arc and if the pads are left to wear so much...
Forum: Bicycle Mechanics
05-07-24, 09:56 AM
Replies: 58
Views: 1,568
Posted By Andrew R Stewart

I cook but I will never have the kitchen tool...

I cook but I will never have the kitchen tool craft like a pro food prep/chef has. There are a number of filters that most all LBS staff need to pass through to keep in this field. One is how to fix...
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