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Search: Posts Made By: Andrew R Stewart
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Forum: Framebuilders
01-15-22, 09:11 PM
Replies: 1
Views: 112
Posted By Andrew R Stewart

Progress today. Finished the front end jig mods. ...

Progress today. Finished the front end jig mods.
https://cimg3.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/p1150200_4c9cc42aa6b4eb4dc564ca642bd2310be73cb5a8.jpg
Metal has been cut and...
Forum: Framebuilders
01-15-22, 08:50 PM
Replies: 4
Views: 70
Posted By Andrew R Stewart

I can't agree more, the hotter the water the...

I can't agree more, the hotter the water the faster the brass flux will soak off. I use an emersion hearer, sourced from a farm equipment supplier. I fill my tub or trough w/ hot tap water. Set the...
Forum: Framebuilders
01-14-22, 08:29 PM
Replies: 5
Views: 162
Posted By Andrew R Stewart

I might consider smoothing out the general...

I might consider smoothing out the general surface removing the many file marks. But not doing any real socket or even edge filing. I'd also consider the crown's underside but would want to feel...
01-14-22, 12:19 AM
Replies: 6
Views: 177
Posted By Andrew R Stewart

Please don't file the drop outs! File the axle...

Please don't file the drop outs! File the axle instead. Axles have a far smaller replacement cost if you ever wanted to use that hub on a different bike. But to take away part of the bike's intended...
01-13-22, 10:19 PM
Replies: 6
Views: 170
Posted By Andrew R Stewart

I would first reconfirm the number and function...

I would first reconfirm the number and function of both the primary shift "points" and the trim ones between the primary steps. I find the best way to do this is not with the cable attached to the...
01-13-22, 10:12 PM
Replies: 25
Views: 497
Posted By Andrew R Stewart

Not even a head shake here! Good job at figuring...

Not even a head shake here! Good job at figuring this out. Andy
01-13-22, 09:06 PM
Replies: 6
Views: 177
Posted By Andrew R Stewart

Short answer- Yes, the shaft collar should do the...

Short answer- Yes, the shaft collar should do the trick. There are many bikes w/ threadless headsets that have a cable hanger that also clamps about the steerer w/ a pinch bolt. These bikes can (and...
01-13-22, 09:05 AM
Replies: 9
Views: 254
Posted By Andrew R Stewart

Back in the 1970s (and likely into the 80s) Fuji...

Back in the 1970s (and likely into the 80s) Fuji offered their Sports model in a 547 (24x1 1/4) wheel size for the kids. They also had a 597 (26x1/1/4) version. And, IIRC, they (like a few others)...
01-13-22, 09:02 AM
Replies: 25
Views: 497
Posted By Andrew R Stewart

I might shake my head, but I won't laugh. Andy

I might shake my head, but I won't laugh. Andy
01-12-22, 12:48 PM
Replies: 9
Views: 254
Posted By Andrew R Stewart

Product labels have nothing to do with math. What...

Product labels have nothing to do with math. What so many people are willing to think is that a label is also a specification. This is why ERTRO specs came about (and later ISO), to better describe...
01-12-22, 12:43 PM
Replies: 19
Views: 433
Posted By Andrew R Stewart

It's common for many free hub bodies to have a...

It's common for many free hub bodies to have a slight bearing play. So to with freewheels. Andy
Forum: Framebuilders
01-12-22, 11:38 AM
Replies: 1
Views: 112
Posted By Andrew R Stewart

CN Jigs Mods

I've decided to modify the tube holding design on these jigs and this thread will show my plans and progress. For reference see the initial thread on the ID of these jigs (which is still unknown)....
Forum: Framebuilders
01-12-22, 11:14 AM
Replies: 16
Views: 411
Posted By Andrew R Stewart

Here's a bit more data on how these jigs were...

Here's a bit more data on how these jigs were made. I've decided to mod the tube holding design and removed the original DeStato clamps, the tube resting pads and "wall". Under them I found bluing...
01-12-22, 10:49 AM
Replies: 25
Views: 497
Posted By Andrew R Stewart

No, this is not how the system works. The freehub...

No, this is not how the system works. The freehub body bearings are riding on the axle, which is stationary. So when coasting the bearings are not spinning and when pedaling the FH bearings are...
01-12-22, 10:42 AM
Replies: 13
Views: 349
Posted By Andrew R Stewart

Sometimes the axle ends (end caps or lock nuts)...

Sometimes the axle ends (end caps or lock nuts) and/or the QR skewer end caps will indent the face of the drop outs. Especially if the QR caps are steel and/or the drop outs are Al. When this happens...
01-12-22, 10:30 AM
Replies: 4
Views: 156
Posted By Andrew R Stewart

Sure, anything can go wrong. But with the right...

Sure, anything can go wrong. But with the right tools and mechanical common sense the likelihood of messing up is less than if one is clueless and tries to make do with the wrong tools.

If you...
01-11-22, 06:24 PM
Replies: 4
Views: 156
Posted By Andrew R Stewart

The high road is to revisit the hub overhaul but...

The high road is to revisit the hub overhaul but with the axle and its bearings removed then remove the freehub body from the hub shell. A 10mm (IIRC) hex key (needs a long lever or bench vice to...
01-11-22, 06:17 PM
Replies: 9
Views: 254
Posted By Andrew R Stewart

Most likely a 504/547 "misunderstanding". This is...

Most likely a 504/547 "misunderstanding". This is why better bike shops have a tire size chart on their computer's favorites list, to educate their customers and reduce the return rate of tires. One...
01-11-22, 09:49 AM
Replies: 29
Views: 557
Posted By Andrew R Stewart

And the proof of this is that what we call "long...

And the proof of this is that what we call "long reach" was called "standard reach" only a few decades years ago. Terms shift with the popular and current needs. Another example of this is the...
01-11-22, 09:42 AM
Replies: 5
Views: 188
Posted By Andrew R Stewart

By "the retainer on the other left side is still...

By "the retainer on the other left side is still stuck in the bracket" do you mean that you did try to remove the LH cup but it didn't unthread? Or that you haven't yet tried to loosen it? Either way...
01-10-22, 10:25 PM
Replies: 2
Views: 161
Posted By Andrew R Stewart

Do these hubs have slide on or thread on end...

Do these hubs have slide on or thread on end caps? Sounds like one end cap might be askew. But without knowing for sure what "completely loose" means, or is caused by, I can only speculate. Andy
01-10-22, 09:38 PM
Replies: 9
Views: 255
Posted By Andrew R Stewart

I assume the bike has no friction shifting...

I assume the bike has no friction shifting option. Andy
01-10-22, 09:33 PM
Replies: 29
Views: 557
Posted By Andrew R Stewart

I always felt that brakes were one of the...

I always felt that brakes were one of the components that weight concerns were miss directed. To me the feel, modulation and reliability is VASTLY more important.

Back in the day we had really...
Forum: Framebuilders
01-10-22, 09:22 PM
Replies: 18
Views: 431
Posted By Andrew R Stewart

The I reamer I have, can't remember the brand but...

The I reamer I have, can't remember the brand but it's old, will cut a tad smaller than the stated minimum. I strongly agree with slotting the seat binder AFTER reaming with one of these straight...
Forum: Framebuilders
01-10-22, 05:04 PM
Replies: 18
Views: 431
Posted By Andrew R Stewart

If you're only reaming the seat tube ID and the...

If you're only reaming the seat tube ID and the 27mm "family" is your goal then only one reamer is needed. Straight-Blade Adjustable-Size Reamer, High-Speed Steel, 1-1/16" to 1-3/16" Reamer Diameter...
01-09-22, 09:40 AM
Replies: 4
Views: 152
Posted By Andrew R Stewart

If doing some basic maintenance will make the...

If doing some basic maintenance will make the bike be useable and if one would then use it, I believe it's worth it. Andy
01-09-22, 09:38 AM
Replies: 26
Views: 625
Posted By Andrew R Stewart

I fail to believe that having the drive on the LH...

I fail to believe that having the drive on the LH side would be any more aero than its being on the RH side. If anything having only left turns on a track it seems to me that a RH drive would be more...
01-08-22, 09:36 PM
Replies: 26
Views: 625
Posted By Andrew R Stewart

Curious that it's a pursuit bike that Felt used a...

Curious that it's a pursuit bike that Felt used a LH drive on. Of the track events pursuit is likely the least needing pedal/track clearance:) If a rider is going slow enough to need the added...
01-08-22, 06:18 PM
Replies: 26
Views: 625
Posted By Andrew R Stewart

Track racers tried LH drive decades ago to move...

Track racers tried LH drive decades ago to move the RH crank arm/pedal inwards to reduce banking strike when jockeying in a marched spring. Andy
01-08-22, 10:08 AM
Replies: 6
Views: 153
Posted By Andrew R Stewart

Isn't there an access port in the plastic cover?...

Isn't there an access port in the plastic cover? Generally about across from the exit port (with it's adjuster). Sometimes this access port is plugged with a plastic "screw".

Shimano does offer...
01-07-22, 02:38 PM
Replies: 14
Views: 285
Posted By Andrew R Stewart

And this is why it's good advice to periodically...

And this is why it's good advice to periodically take stuff apart and reassemble, even if there's no outward indication of this need. Andy
Forum: Framebuilders
01-05-22, 10:17 AM
Replies: 16
Views: 411
Posted By Andrew R Stewart

Skip- Thanks for the contact info. I've sent Lee...

Skip- Thanks for the contact info. I've sent Lee an email about passing along my quarry to Al.

Doug- I think the young builder you speak of was Scott or his partner/buddy whose name escapes me....
01-05-22, 09:51 AM
Replies: 9
Views: 231
Posted By Andrew R Stewart

The backing plate made of Al is the part that has...

The backing plate made of Al is the part that has the two pivot mounts and has the recessed fitting for one end of the return spring. I'm sure Shimano has its own name for it. The pivot bolts thread...
01-04-22, 10:45 PM
Replies: 9
Views: 231
Posted By Andrew R Stewart

IIRC these grub screws use a 2mm hex key. But I...

IIRC these grub screws use a 2mm hex key. But I could be off by .5mm. They help hold the bolt they press against in place, rotationally. Basically a preload locking device. There are quite a few dual...
Forum: Framebuilders
01-04-22, 06:59 PM
Replies: 4
Views: 244
Posted By Andrew R Stewart

I contacted N-D Tool Grinding Inc today to check...

I contacted N-D Tool Grinding Inc today to check on their still taking in bike tool sharpening work. He is, although he said that it will take time as his industrial customers come first (the last...
01-04-22, 03:19 PM
Replies: 13
Views: 188
Posted By Andrew R Stewart

Unrelated to the thread's subject but... The...

Unrelated to the thread's subject but... The number one reason why such a young BB (on the Trek at around 1000 miles) is that the Bb unit is not well tightened within the shell. The unit and crank...
01-04-22, 03:07 PM
Replies: 24
Views: 575
Posted By Andrew R Stewart

The most common reasons for a canti brake to not...

The most common reasons for a canti brake to not stop as well as they could is- old and/or poor pads, too much cable friction, poor straddle cable to canti arm angle and poor pad alignment. A good...
01-04-22, 11:35 AM
Replies: 13
Views: 188
Posted By Andrew R Stewart

"Theoretically, the crankarm rotates the square...

"Theoretically, the crankarm rotates the square tapered spindle of the JIS bottom bracket, which rotates the chain ring?" SoSmellyAir

When theory meets reality some will deny others move forward...
Forum: Framebuilders
01-04-22, 09:45 AM
Replies: 16
Views: 411
Posted By Andrew R Stewart

Doug- Had you ever visited Ron B's shop (or as I...

Doug- Had you ever visited Ron B's shop (or as I remember Ron's brother's shop as I was told by Ron that it was his brother who did most of the frame work). The shop was in the basement of the bike...
Forum: Framebuilders
01-03-22, 11:30 PM
Replies: 16
Views: 411
Posted By Andrew R Stewart

When I took Al's class in 1979 he mentioned that...

When I took Al's class in 1979 he mentioned that he designed/made (unsure where his hands left the metal) quite a few jigs based on various designs. When I first saw these jigs I did think of Al's...
01-03-22, 09:00 PM
Replies: 13
Views: 188
Posted By Andrew R Stewart

I think you need to take a better look at the...

I think you need to take a better look at the design, perhaps pulling the crankarm will more easily show that the ring is attached to the crankarm. Otherwise how will crankarm rotation be transferred...
Forum: Framebuilders
01-03-22, 07:38 PM
Replies: 16
Views: 411
Posted By Andrew R Stewart

VC- In other forums a a well known builder...

VC- In other forums a a well known builder suggested they were similar to the Witcomb jigs and another better known for teaching suggested an Eisentraut connection too. Thanks for the reply and...
Forum: Framebuilders
01-03-22, 03:04 PM
Replies: 4
Views: 244
Posted By Andrew R Stewart

Tom- I've not done my own sharpening but here in...

Tom- I've not done my own sharpening but here in Rochester there's a guy who has sharpened my (and other's) frame cutting tools. I can share the contact if you're interested. At one time Jim Kish...
01-03-22, 02:46 PM
Replies: 8
Views: 263
Posted By Andrew R Stewart

Both single and dual pivot versions used a star...

Both single and dual pivot versions used a star washer/spacer between the mounting bolt/center bolt and the fork crown. This helps to "dig into" the two parts to better hold the rotational effort to...
Forum: Framebuilders
01-03-22, 02:35 PM
Replies: 16
Views: 411
Posted By Andrew R Stewart

Cyclery North Frame Jigs ID help

These two jigs are what we used ay Cyclery North (Chicago, IL) for our framebuilding. One jig holds the TT, DT and HT. The other does the rear end after the front is brazed up. Neither has a name or...
01-03-22, 11:01 AM
Replies: 10
Views: 245
Posted By Andrew R Stewart

the "28" is likely a tire width reference. Thus...

the "28" is likely a tire width reference. Thus the suggestion of a narrower tire to gain fender/tire gap. Of course a narrower tire in wintery conditions is not what most here would prefer,...
01-03-22, 10:51 AM
Replies: 25
Views: 696
Posted By Andrew R Stewart

Stuart's comments are not wrong, I don't disagree...

Stuart's comments are not wrong, I don't disagree with the facts but I do with relying only on a spray as a lube. I think many here seek the quick way out of their service jobs and not always the...
01-02-22, 09:43 PM
Replies: 24
Views: 575
Posted By Andrew R Stewart

The easy answer is usually yes, reach is about...

The easy answer is usually yes, reach is about the same. The real answer is found by trial fitting as some brake geometries can limit or extend reach at the limits, this is dependent on rim specs and...
01-02-22, 09:39 PM
Replies: 25
Views: 696
Posted By Andrew R Stewart

On Shimano's mid 1990s STI versions there's a...

On Shimano's mid 1990s STI versions there's a plastic ring that closes the gap between the two "halves" the covers otherwise have. This molded and specifically shaped band can swell and no longer fit...
01-02-22, 08:20 PM
Replies: 25
Views: 696
Posted By Andrew R Stewart

The goal is to remove the old gummy lube, not...

The goal is to remove the old gummy lube, not just dilute it. Solvents and penetrating oils are poor lube, although they usually work well for the dissolving the old they are poor lubes and really...
Showing results 1 to 50 of 1000
 


 
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