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Search: Posts Made By: SBinNYC
Showing results 1 to 50 of 549
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08-11-20, 08:56 AM
Replies: 54
Views: 2,014
Posted By SBinNYC

Here's a link to the "optimal" pitch....

Here's a link to the "optimal" pitch. (https://www.sheldonbrown.com/spoke-pitch.html#pitchtable)

The pitch varies with spoke diameter. Some wheels are being built with 1.8mm diameter spokes, where...
08-10-20, 07:10 PM
Replies: 54
Views: 2,014
Posted By SBinNYC

Equalized tension among similar spokes is...

Equalized tension among similar spokes is probably more important than the actual tension (within limits). I check for equal tension by plucking the spokes and listening to the note. For dished rear...
08-10-20, 06:59 PM
Replies: 35
Views: 2,190
Posted By SBinNYC

Falling asleep, daydreaming, etc. while riding...

Falling asleep, daydreaming, etc. while riding were definitely problems, when I used to do 400, 600 and 1200 km brevets.

I tried to build up a reserve sleeping bank before the ride. Get a full...
07-12-20, 07:41 PM
Replies: 10
Views: 393
Posted By SBinNYC

My mistake. I should have done more research. I...

My mistake. I should have done more research. I found these pictures of Powerflow freewheels and cassettes. ...
07-12-20, 05:40 PM
Replies: 10
Views: 393
Posted By SBinNYC

My research indicates that the Suntour Powerflow...

My research indicates that the Suntour Powerflow was an accushift cassette. If so, it was an early cassette and does not require any special remover. What it does require is 2 chain whips. The small...
07-12-20, 05:15 PM
Replies: 7
Views: 329
Posted By SBinNYC

A wobbly wheel is usually an indication of...

A wobbly wheel is usually an indication of loose/broken spokes and/or a bent rim. It can also be loose/missing bearings, a loose wheel (not tight in the frame) and a couple of other things (like a...
Forum: Northeast
02-15-20, 07:05 PM
Replies: 42
Views: 3,309
Posted By SBinNYC

The added security is mostly due to the aftermath...

The added security is mostly due to the aftermath of 9/11. One cannot go into most office buildings without producing a photo id. The security people from NYC and the other agencies instituted...
10-31-19, 04:20 PM
Replies: 20
Views: 1,078
Posted By SBinNYC

There's something called an internal pipe wrench....

There's something called an internal pipe wrench.

A normal pipe wrench will turn a pipe by digging into the outside of a pipe. An internal pipe wrench will grip the pipe from the inside. Size the...
Forum: Northeast
10-20-19, 04:24 AM
Replies: 7
Views: 863
Posted By SBinNYC

I'll be riding as one of the 25 mile sweeps. It's...

I'll be riding as one of the 25 mile sweeps. It's not likely our paths will cross. If you are riding the 40, you will leave first. If you are on the 25, it's likely I'll have a lot of repairs to make...
09-04-19, 08:33 AM
Replies: 8
Views: 989
Posted By SBinNYC

I've been a ride leader for my club for...

I've been a ride leader for my club for approximately 45 years. We give a "2 minute" safety talk/check that was originally required by our insurance company. It would cover several problems your...
Forum: Northeast
01-30-19, 06:04 PM
Replies: 47
Views: 13,218
Posted By SBinNYC

Which way were you traveling?

Which way were you traveling?
01-02-19, 06:00 PM
Replies: 13
Views: 1,151
Posted By SBinNYC

I'm still using a 50+ year old "bottle" Miller...

I'm still using a 50+ year old "bottle" Miller sidewall generator. It produces AC. The battery backups used a relay that connected the lights to either the generator or the batteries. Incandescent...
01-02-19, 05:49 PM
Replies: 13
Views: 1,151
Posted By SBinNYC

The modern German dynamos use 2 wires rather than...

The modern German dynamos use 2 wires rather than a ground return. This provides a more secure electrical contact and avoids possible electrolysis problems.

The preferred wiring method is to run 2...
Forum: Northeast
11-24-18, 08:32 AM
Replies: 1
Views: 676
Posted By SBinNYC

The Queensboro Bridge shared use pedestrian/bike...

The Queensboro Bridge shared use pedestrian/bike path is already over-crowded. It's LOS is D between 7 and 8am and F between 8 and 9am. There's been an effort to separate the pedestrians and bikes...
11-17-18, 08:45 AM
Replies: 20
Views: 1,701
Posted By SBinNYC

It's a long way off. At present the collision...

It's a long way off. At present the collision rate for autonomous vehicles is about 20 times that of human driven vehicles. In particular, autonomous vehicles have a difficult time reacting to...
11-08-18, 06:18 PM
Replies: 14
Views: 1,178
Posted By SBinNYC

I use the exact same tire: 700c x 28mm wire bead....

I use the exact same tire: 700c x 28mm wire bead. I have not had any hop problems. I've mounted them on Super Champion Mod 58, the Rigida knockoff of the Super Champion Gentleman and a Velo Orange...
10-17-18, 08:38 AM
Replies: 10
Views: 556
Posted By SBinNYC

You failed to emphasize that gears should be...

You failed to emphasize that gears should be changed while pedaling and that the chain cannot be taut. This means that the rider should anticipate the gear change when approaching a hill not wait...
10-11-18, 09:17 AM
Replies: 15
Views: 597
Posted By SBinNYC

You are correct. You want the 26 mm for proper...

You are correct. You want the 26 mm for proper chainline. Thus for a symmetrical bottom bracket the spindle length should be: 26 + 68 + 26 = 120 mm.

You can use bottom bracket spacers, if you are...
10-09-18, 08:27 PM
Replies: 73
Views: 3,824
Posted By SBinNYC

Rema makes a lot of products for repairing...

Rema makes a lot of products for repairing motorcycle, car and truck tubes and tires. Their bicycle business is small compared to the other applications for their products. Therefore, their U.S....
10-09-18, 12:11 PM
Replies: 10
Views: 646
Posted By SBinNYC

There's more to it than the crank position...

There's more to it than the crank position relative to the taper. There's the question of whether the crank or chainwheel will clear the chainstay. Although, there's the question whether the crank...
10-09-18, 09:50 AM
Replies: 10
Views: 646
Posted By SBinNYC

This may be a photo problem. The spindle...

This may be a photo problem.

The spindle does not appear to be symmetrical. The left side appears to be longer than the right because there is no round section showing on the right side. This used...
10-09-18, 09:43 AM
Replies: 15
Views: 893
Posted By SBinNYC

I'll second the call for a picture showing the...

I'll second the call for a picture showing the freewheel.

Regarding Mafac Racer brakes, the adjusters are usually found on the levers...
10-09-18, 09:34 AM
Replies: 73
Views: 3,824
Posted By SBinNYC

This does not exactly relate to the quote but...

This does not exactly relate to the quote but there are other aspects.

Long ago (shortly after WW II and probably before), bike shops would patch tubes (with hot vulcanizing fluid) if someone came...
09-20-18, 12:38 PM
Replies: 73
Views: 3,824
Posted By SBinNYC

I wrote this a while back for rec.bicycles.tech....

I wrote this a while back for rec.bicycles.tech. I still follow it.

There are a couple of differences with the Rema video.

1. I lie the tube flat on a hard surface (a Rema box). It's important...
09-18-18, 08:45 AM
Replies: 7
Views: 857
Posted By SBinNYC

I had a different experience with Weinmann...

I had a different experience with Weinmann Concave rims. They had a nasty habit of taco-ing on most falls. They would spring back, if force were applied to the rims. Another complaint against...
Forum: Northeast
09-18-18, 08:25 AM
Replies: 6
Views: 588
Posted By SBinNYC

1. I assume the "Salt Marsh" rest stop was Marine...

1. I assume the "Salt Marsh" rest stop was Marine Park. If Forest Park is any example, the fault for there being no mechanic might not lie with the mechanic.

I've been a volunteer mechanic for the...
09-16-18, 07:07 AM
Replies: 6
Views: 365
Posted By SBinNYC

Your brake pads were probably properly installed....

Your brake pads were probably properly installed. The problem is with brake arms that pivot from the side, like center pulls or one of the dual pivot brake arms. The arm movement is both towards the...
09-12-18, 07:50 AM
Replies: 18
Views: 873
Posted By SBinNYC

It's basically the same mechanism for pinched...

It's basically the same mechanism for pinched flats. The tire sidewall rubs against either the ground or the wheel flange. There's no guarantee that the tube will find a void between tire and wheel...
09-11-18, 06:55 PM
Replies: 18
Views: 873
Posted By SBinNYC

You probably got the cut because you are running...

You probably got the cut because you are running a 23 mm wide tire at too low a pressure. Depending on your weight it should be: 100 psi for a 130 lb weight; 115 psi for a 185 lb weight; and 130 psi...
Forum: Northeast
09-11-18, 06:38 PM
Replies: 6
Views: 588
Posted By SBinNYC

I was doing bike repair at Forest Park for the 75...

I was doing bike repair at Forest Park for the 75 and 100 milers. I got wet despite a tent and wearing a rain jacket under my apron.

There were a lot of flat tires.
09-11-18, 07:10 AM
Replies: 10
Views: 2,698
Posted By SBinNYC

You have left out some details that might provide...

You have left out some details that might provide clues.

1. What type of rim? Single wall or double wall? Are there eyelets? What's the width?
Judging by the perceived dimples on the photo, I'd...
Replies: 84
Views: 7,356
Posted By SBinNYC

The dextrose tablets are indeed fast acting...

The dextrose tablets are indeed fast acting sugars. I got them at Karl Ehmer one of the local German food markets in NYC. It was a German product. I don't know what it was doing among the smoked...
Replies: 84
Views: 7,356
Posted By SBinNYC

I survived PBP back in 1979 and 1983. I...

I survived PBP back in 1979 and 1983. I considered myself a marginal rider and managed to survive by careful planning. Here are some of the tricks that got me through.

1. I got "adopted" by a...
08-27-18, 12:49 PM
Replies: 7
Views: 521
Posted By SBinNYC

1. This question might be more appropriate for...

1. This question might be more appropriate for the Bicycle Mechanics forum.
2. If you cannot figure out what size tube you need from looking at the bike, you should consider going to a local bike...
07-25-18, 06:45 AM
Replies: 59
Views: 4,370
Posted By SBinNYC

One important difference between Rema patches and...

One important difference between Rema patches and its imitators is that the Rema's clear layer is cellophane not plastic.

If you look very carefully at a Rema patch, you will notice there's a...
07-16-18, 08:20 AM
Replies: 44
Views: 2,226
Posted By SBinNYC

It depends on whether you have a solid or hollow...

It depends on whether you have a solid or hollow (skewer quick relase) axle.

On a solid axle, the the tightening wing nuts are pulling the axle against the frame. The locknuts will prevent axle...
07-16-18, 07:52 AM
Replies: 3
Views: 3,242
Posted By SBinNYC

You don't need to remove a wheel to patch a tube...

You don't need to remove a wheel to patch a tube - only to replace one.

1. With the wheel still on the bike, use your tire irons to remove the tire bead from one side. Preferably the non-driving...
06-06-18, 05:04 AM
Replies: 28
Views: 2,830
Posted By SBinNYC

First, You're considering the avoidance of a...

First, You're considering the avoidance of a collision not the effects of the collision.

Here's what the AAA discovered regarding the relationship between impact speed and the probability of...
06-05-18, 11:47 AM
Replies: 25
Views: 1,506
Posted By SBinNYC

Are the "fully retracted" pads flush with the...

Are the "fully retracted" pads flush with the brake body or to the extend beyond the body?

If they extend beyond the brake body, then the problem is with the brake mechanism. You might try to...
06-05-18, 10:17 AM
Replies: 25
Views: 1,506
Posted By SBinNYC

With the wheel off, do the left and right pad...

With the wheel off, do the left and right pad adjustment screws have any effect on the clearance?
04-20-18, 08:35 AM
Replies: 19
Views: 3,787
Posted By SBinNYC

The front of the first wave is constrained to 15...

The front of the first wave is constrained to 15 mph. The rear of the last wave must maintain a 6 mph speed. Riders can ride at any safe speed between the tour's front and rear.

Faster riders...
04-06-18, 06:26 PM
Replies: 3
Views: 523
Posted By SBinNYC

None also works. Adjust the limit screws,...

None also works.

Adjust the limit screws, then take out any cable slack by setting the cable anchor bolt. There's no need for any additional cable adjustment with friction shifters.
01-07-18, 11:26 AM
Replies: 23
Views: 1,312
Posted By SBinNYC

The Harris link shows a claw that will work with...

The Harris link shows a claw that will work with a horizontal dropout. It won't work with a vertical dropout.

Here are links to 2 emergency universal hangers that will work with both dropouts.
...
12-03-17, 08:30 PM
Replies: 25
Views: 1,932
Posted By SBinNYC

The original poster did not mention the rim...

The original poster did not mention the rim material nor the brakes pad he tried. Others have mentioned that chrome plated steel rims are especially bad in rain. If the rims are chrome plated steel,...
11-26-17, 12:06 PM
Replies: 51
Views: 3,092
Posted By SBinNYC

Wholeheartedly. I merely wanted to...

Wholeheartedly.


I merely wanted to point out the perils of using accelerometers for estimating velocity and position.
11-26-17, 10:23 AM
Replies: 51
Views: 3,092
Posted By SBinNYC

The reason for the delay in registering speed...

The reason for the delay in registering speed changes isn't due to the system's slow response to sensor input. Measuring a rate of change by differentiation means that high speed changes due to noise...
11-26-17, 10:17 AM
Replies: 51
Views: 3,092
Posted By SBinNYC

There's a fundamental problem with using...

There's a fundamental problem with using accelerometers. No instrument can distinguish between inertial (due to changes in motion) and gravitational acceleration. That's part of Einstein's General...
11-26-17, 10:00 AM
Replies: 51
Views: 3,092
Posted By SBinNYC

You could achieve the result of a quicker low...

You could achieve the result of a quicker low speed response by adding magnet(s) to additional spoke(s).
Forum: Northeast
09-28-17, 10:27 AM
Replies: 11
Views: 1,004
Posted By SBinNYC

Just for the record, here's the public transit...

Just for the record, here's the public transit way to get from Yonkers to LGA.

1. Take Metro North from the Yonkers station to 125th St (2 trains/hr 15-25 min travel time)
2. Take the M60 bus...
09-27-17, 05:12 PM
Replies: 31
Views: 31,962
Posted By SBinNYC

Bikit may have had a good idea. Unfortunately,...

Bikit may have had a good idea. Unfortunately, the implementation was lacking. Those yellow pods dried out quicker than a tube of vulcanizing fluid.
Showing results 1 to 50 of 549
 


 
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