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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
04-23-24, 02:03 PM
Replies: 3
Views: 48
Posted By Andrew R Stewart

There's really a shade of grey WRT when a lube is...

There's really a shade of grey WRT when a lube is considered an oil VS a grease as greases and oils vary in their thickness. A thinner grease might be more injectable but it generally will then be...
Forum: Bicycle Mechanics
04-23-24, 01:54 PM
Replies: 3
Views: 47
Posted By Andrew R Stewart

If the wheel sits centered in the frame and if...

If the wheel sits centered in the frame and if the brake bosses are located in the same places of either side the brake pads generally are in the same spot in the arm's slots. The photo doesn't show...
Forum: Bicycle Mechanics
04-23-24, 01:44 PM
Replies: 3
Views: 48
Posted By Andrew R Stewart

I have dripped medium viscosity oil into many IGH...

I have dripped medium viscosity oil into many IGH axles/hubs via the indicator rod hole. Any factory grease isn't a life time never needing attention product and grease will dry out over time. having...
Forum: Bicycle Mechanics
04-23-24, 01:28 PM
Replies: 3
Views: 81
Posted By Andrew R Stewart

All the Bike Fridays I've worked on (number more...

All the Bike Fridays I've worked on (number more than a dozen) have used a "common" rear drop out based on a 10mm axle diameter. Between manufacture's tolerances, the industry using both 9.5mm (3/8")...
Forum: Framebuilders
04-23-24, 07:59 AM
Replies: 5
Views: 95
Posted By Andrew R Stewart

I don't like the look of a wider top of the fork...

I don't like the look of a wider top of the fork blades compared to the dropout end too. But the parts in play (blade diameter at the top VS bottom), the amount of tire width and clearance, the...
Forum: Bicycle Mechanics
04-23-24, 07:53 AM
Replies: 5
Views: 71
Posted By Andrew R Stewart

A piece of PVC plumbing pipe, many wraps of...

A piece of PVC plumbing pipe, many wraps of masking tape, more headset spacers, custom machining a piece of metal, an old stem all can work. As could many other methods.

There's no real need for...
Forum: Bicycle Mechanics
04-23-24, 07:39 AM
Replies: 4
Views: 70
Posted By Andrew R Stewart

Having watched many (as in many dozens) of...

Having watched many (as in many dozens) of customers go through this process of changing use and expectations I find that most will not be satisfied with the changes of gearing the OP asks about. An...
Forum: Bicycle Mechanics
04-22-24, 02:17 PM
Replies: 22
Views: 297
Posted By Andrew R Stewart

"Shifting into the spokes" is a classic...

"Shifting into the spokes" is a classic indication of the chain's movement not being controlled properly. Once limit screws are set (or at least the low gear one) they rarely spin in their threads as...
Forum: Bicycle Mechanics
04-22-24, 12:18 PM
Replies: 22
Views: 297
Posted By Andrew R Stewart

A few comments- An aprox 15" gear (24x42 on...

A few comments-

An aprox 15" gear (24x42 on a "27" wheel") is a very low gear and one that being able to balance the bike (especially a tandem), at the 3ish MPH that this low ratio is often run...
Forum: Bicycle Mechanics
04-22-24, 10:03 AM
Replies: 29
Views: 567
Posted By Andrew R Stewart

This thread is beginning to drift into a "how to...

This thread is beginning to drift into a "how to do it right" and a "what's right" pissing session.

I would ask if the OP has yet tried to mount the tire and see what the actual fit up results...
Forum: Mountain Bike Marketplace
04-21-24, 07:48 PM
Replies: 0
Views: 92
Posted By Andrew R Stewart

GT Bravado

I always have been a dual rigid rider and after trying ft suspension when I owned BIke One (Cleveland, OH; now long closed) I went back to my 1987 Tomac Signiture. But the want for new stuff (as it...
Forum: For Sale
04-21-24, 07:28 PM
Replies: 2
Views: 187
Posted By Andrew R Stewart

Fuji Finest 1974 21"

Yes, a 49 year old Fuji for sale. In 1974 I bought a 1973 Finest, first bought bike with sew ups. Sold it a couple years later as it was a 23" and way big. Bought another, this time a 1976, and kept...
Forum: Bicycle Mechanics
04-21-24, 03:01 PM
Replies: 29
Views: 567
Posted By Andrew R Stewart

I had thought one of the differences between...

I had thought one of the differences between these and common butyl tubes was their inability to stretch much. As in the crossection/width had to match up pretty closely to that of the mounted tire....
Forum: Bicycle Mechanics
04-21-24, 08:44 AM
Replies: 4
Views: 177
Posted By Andrew R Stewart

Wasn't this recently asked about? Maybe the OP is...

Wasn't this recently asked about? Maybe the OP is shopping for the answer they want?

I wouldn't mess with the chance of a wheel coming loose or not being tightened well enough. As others have...
Forum: Bicycle Mechanics
04-18-24, 10:49 AM
Replies: 6
Views: 244
Posted By Andrew R Stewart

For some one with very basic fabbing skills and...

For some one with very basic fabbing skills and tooling making this kind of casing clamp should be fairly easy to make. Maybe not as sleek and minimal as the one shown... Andy
Forum: Bicycle Mechanics
04-18-24, 10:45 AM
Replies: 25
Views: 584
Posted By Andrew R Stewart

I would second the alloy steerer path. I have run...

I would second the alloy steerer path. I have run the Profile BRC forks in 1" for years and except for one having a loose bit of epoxy in one blade that can be heard when the fork is in hand they...
Forum: Bicycle Mechanics
04-18-24, 07:50 AM
Replies: 12
Views: 317
Posted By Andrew R Stewart

I would add a mm or two (on a front wheel ...

I would add a mm or two (on a front wheel "perfect" spoke length is generally a tad less important then the rear wheel, a mm or two short should be fine). I agree with the need to check the rim...
Forum: Bicycle Mechanics
04-17-24, 08:12 PM
Replies: 13
Views: 420
Posted By Andrew R Stewart

An underside shot of the fork crown might add...

An underside shot of the fork crown might add detail. If the crown is stamped/folded/welded there might be visual evidence of the seam's welding. But lacking the visual cues doesn't mean the crown...
Forum: Bicycle Mechanics
04-17-24, 04:08 PM
Replies: 13
Views: 420
Posted By Andrew R Stewart

My suspicions are a mid later 1970s build. The...

My suspicions are a mid later 1970s build. The recessed brake nut wasn't popular at all in the early 1970s or before to my knowledge.

The fork looks nicely done, note the tapering done to the...
Forum: Bicycle Mechanics
04-16-24, 08:21 PM
Replies: 30
Views: 1,120
Posted By Andrew R Stewart

No expert on materials and their manufacturing...

No expert on materials and their manufacturing but I'll toss in my opinion too.

I can't remember the last time I saw a broken inside plate, likely I have but so infrequently they didn't even...
Forum: Bicycle Mechanics
04-16-24, 03:23 PM
Replies: 8
Views: 443
Posted By Andrew R Stewart

I thought the OP was wanting to use a X2 crank...

I thought the OP was wanting to use a X2 crank arm with one ring. Hense my comment about which ring position was going to be used and how that then lined up with the rear chainline. Andy
Forum: Bicycle Mechanics
04-16-24, 03:20 PM
Replies: 10
Views: 453
Posted By Andrew R Stewart

I lived in Santa Cruz for a few months (a long...

I lived in Santa Cruz for a few months (a long time ago) and had a chromed Fuji (Finest). My commute was only just over a mile but went down nearly 200+ feet to almost sea level and up nearly the...
Forum: Bicycle Mechanics
04-15-24, 08:11 AM
Replies: 10
Views: 453
Posted By Andrew R Stewart

The usual way to insure water is gone from...

The usual way to insure water is gone from threads is to wipe them off and let them evaporate off any remaining moisture. Using a water displacer (as in WD40) to further rinse/flow moisture off the...
Forum: Framebuilders
04-14-24, 04:16 PM
Replies: 3
Views: 239
Posted By Andrew R Stewart

Every paint formulation I have used for bikes had...

Every paint formulation I have used for bikes had its own recoat time. Many are like guy says, suggesting a recoat after set up but before fully dry or after fully dry (and then a fine wet/dry...
Forum: Bicycle Mechanics
04-14-24, 04:02 PM
Replies: 15
Views: 538
Posted By Andrew R Stewart

The two usual methods to secure loose balled (as...

The two usual methods to secure loose balled (as in no cartridge bearings) FHB to the hub shell is with a hollow bolt that is removed from the LH hub side or having a FHB with s threaded stud (again...
Forum: Bicycle Mechanics
04-13-24, 08:49 PM
Replies: 8
Views: 443
Posted By Andrew R Stewart

You're moving from a double or triple ring set...

You're moving from a double or triple ring set up? Can you establish an OK chain line (and with a single ring the chainlines really need to line up better than with 2 or 3 rings) with the current BB...
Forum: Bicycle Mechanics
04-12-24, 08:22 PM
Replies: 8
Views: 375
Posted By Andrew R Stewart

Unless the rivet in question is joining the cog...

Unless the rivet in question is joining the cog with a spyder/carrier. Andy
Forum: Bicycle Mechanics
04-12-24, 08:20 PM
Replies: 8
Views: 375
Posted By Andrew R Stewart

Yes. You might not have the tooling or skills. or...

Yes. You might not have the tooling or skills. or you might not be able to create a rivet with the minimal heads that the common cassette ones have. (Specific rivets for the application using...
Forum: Framebuilders
04-12-24, 08:23 AM
Replies: 20
Views: 995
Posted By Andrew R Stewart

Wood has been used before. The two examples are...

Wood has been used before. The two examples are both aimed at new to building people on a budget. The Jiggernaut as found here Results for "bicycle frame jig" in all - Instructables...
Forum: Framebuilders
04-11-24, 04:09 PM
Replies: 25
Views: 874
Posted By Andrew R Stewart

When riding with a more upright body the seat...

When riding with a more upright body the seat tube angle often is slacked back a bit. Which worsens top tube length and/or toe overlap. I suspect that the slack head tubes used back in the day, on...
Forum: Bicycle Mechanics
04-11-24, 11:46 AM
Replies: 5
Views: 189
Posted By Andrew R Stewart

Have you asked any bike shops if they can install...

Have you asked any bike shops if they can install a Helicoil? Some shops are good with this repair method, others would rather just sell a new arm. When done properly a Helicoil is stronger than the...
Forum: Bicycle Mechanics
04-11-24, 11:42 AM
Replies: 23
Views: 481
Posted By Andrew R Stewart

Really?? Common fact that molds and dies wear,...

Really?? Common fact that molds and dies wear, pre molded material mix varies the density somewhat with each batch, woven fibers vary some as well as their woven "tightness". It's called...
Forum: Framebuilders
04-11-24, 08:26 AM
Replies: 25
Views: 874
Posted By Andrew R Stewart

I also use BikeCad. I will again suggest that the...

I also use BikeCad. I will again suggest that the design method the OP starts playing with might be best if it is the same as what the class/instructor will use. less translation or getting up to...
Forum: Bicycle Mechanics
04-10-24, 08:19 PM
Replies: 2
Views: 236
Posted By Andrew R Stewart

I would not mix parts from differing skewers that...

I would not mix parts from differing skewers that are of different brands or designs/series (excluding the adjusting nut at the far end of the skewer. If the threading is the same this swap should be...
Forum: Bicycle Mechanics
04-10-24, 08:12 PM
Replies: 18
Views: 8,396
Posted By Andrew R Stewart

15 year old... one reason why Shimano chose...

15 year old...

one reason why Shimano chose different link wires (straddle wires by a different name and set up) was to deal with the different cable casing hanger/stop to canti dimension compared...
Forum: Bicycle Mechanics
04-10-24, 08:03 PM
Replies: 39
Views: 1,616
Posted By Andrew R Stewart

There are a lot of mechanical designs that worked...

There are a lot of mechanical designs that worked well when they came out, only to see improvements later. Andy (not saying more about this view of recent past)
Forum: Bicycle Mechanics
04-10-24, 07:52 PM
Replies: 4
Views: 248
Posted By Andrew R Stewart

The SunTour V series ders weren't designed with...

The SunTour V series ders weren't designed with the guide pulley center to most inward surface of the cage (or pulley bolt end) that works nicely with the closer large cog to spoke dimension that the...
Forum: Framebuilders
04-10-24, 11:47 AM
Replies: 25
Views: 874
Posted By Andrew R Stewart

I would reach out to the instructor and ask if...

I would reach out to the instructor and ask if they offer fitting or design help too. If they use a specific design program (and if so perhaps see if you can play with that prior to attending the...
Forum: Framebuilders
04-09-24, 07:43 PM
Replies: 6
Views: 290
Posted By Andrew R Stewart

Good to see better photos. I agree with Eric, If...

Good to see better photos. I agree with Eric, If I were to consider fixing this I would likely replace the tubes. But I'd want to check out the rest of the frame first. Andy
Forum: Bicycle Mechanics
04-08-24, 09:32 PM
Replies: 13
Views: 493
Posted By Andrew R Stewart

I do much the same cleaning, sometimes working...

I do much the same cleaning, sometimes working the pawls with a pick to help the dissolving of the gummy grease in the pivot. Where i differ is in the lube after free pawl movement. I like oils with...
Forum: Bicycle Mechanics
04-08-24, 04:43 PM
Replies: 33
Views: 1,332
Posted By Andrew R Stewart

Just guessing but with so little to go on- That...

Just guessing but with so little to go on- That crack has been there for a while given the rust showing on the edges/face in photo 1 and 2. That the rest of the bike shows a lot of surface rust...
Forum: Bicycle Mechanics
04-07-24, 06:51 PM
Replies: 21
Views: 745
Posted By Andrew R Stewart

Do I see a front der with frozen pivots? The der...

Do I see a front der with frozen pivots? The der should be able to move in and out with only fingers proding it (and the cable not attached to or influencing it). Does it? If so this wouldn't be the...
Forum: Bicycle Mechanics
04-07-24, 06:34 PM
Replies: 5
Views: 313
Posted By Andrew R Stewart

Sure looks like the spring, if available, will...

Sure looks like the spring, if available, will just slip back in (after general cleaning and considering the other two springs' remaining life). But likely the springs are specific to the...
Forum: Bicycle Mechanics
04-07-24, 09:24 AM
Replies: 4
Views: 193
Posted By Andrew R Stewart

IME all Shimano indexed intended 8 cog cassettes...

IME all Shimano indexed intended 8 cog cassettes have had the same cog to cog center dimensions, they all are interchangeable WRT the cog spacing. The same for SRAM 8 speed cassettes and the two...
Forum: Framebuilders
04-06-24, 07:21 PM
Replies: 9
Views: 406
Posted By Andrew R Stewart

Or Doug Fattic. I forgot about the "D" cross...

Or Doug Fattic. I forgot about the "D" cross sectional shape being a possibility. I know I have none of those blades in my small stash. Andy
Forum: Bicycle Mechanics
04-06-24, 07:16 PM
Replies: 16
Views: 492
Posted By Andrew R Stewart

In my world vise grips are for holding stuff...

In my world vise grips are for holding stuff being ground or brazed more often than not. But they do have their place in the repair world, thankfully that place is small and easy to avoid many times....
Forum: Framebuilders
04-06-24, 05:36 PM
Replies: 9
Views: 406
Posted By Andrew R Stewart

I'm not old enough to know from personal hands on...

I'm not old enough to know from personal hands on but I strongly suspect that the fork blades are common, for that era, 531 blades. Likely a 28x16 oval and around 1.1-1.3mm wall at the top. Besides...
Forum: Framebuilders
04-06-24, 07:58 AM
Replies: 13
Views: 552
Posted By Andrew R Stewart

Mike- I don't like AL's softness and crack...

Mike- I don't like AL's softness and crack propagation tendency. I don't like the increase of stiffness that is done to combat the fatigue limit problem. I don't like how one has to join it (rivets,...
Forum: Framebuilders
04-05-24, 09:40 PM
Replies: 13
Views: 552
Posted By Andrew R Stewart

The vast majority of HT cracks I've seen have not...

The vast majority of HT cracks I've seen have not been what i would call a "safety critical" one. Sure they suck, and one should replace ASAP. I doubt the worst case scenario here would be instant...
Forum: Bicycle Mechanics
04-05-24, 09:31 PM
Replies: 24
Views: 754
Posted By Andrew R Stewart

Stiff links should be fairly easy to find. Relax...

Stiff links should be fairly easy to find. Relax the chain tension and use your fingers to flex the chain links both ways as you feed the chain through your fingers. The key is no tension.
...
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