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Search: Posts Made By: cyccommute
Showing results 1 to 30 of 30
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Forum: Bicycle Mechanics
01-22-21, 09:30 PM
Replies: 190
Views: 13,973
Posted By cyccommute

Park says they worked with 3M on their GP-2 web...

Park says they worked with 3M on their GP-2 web page. 3M tends develop something and then off-load the technologies to others for marketing. 3M makes the patches for Park and just lets them market...
Forum: Bicycle Mechanics
01-21-21, 11:00 PM
Replies: 190
Views: 13,973
Posted By cyccommute

I wonder if Park patches are the Rema of...

I wonder if Park patches are the Rema of glueless. In other words, there is an adhesive used on them that isn’t used on others. Park does say that they worked with 3M on the adhesive. If anyone...
Forum: Bicycle Mechanics
01-20-21, 01:53 PM
Replies: 190
Views: 13,973
Posted By cyccommute

Cold temperatures almost always slow chemical...

Cold temperatures almost always slow chemical reactions. Any degradation is a chemical reaction that may be the result of UV or ozone. Heat also causes the rubber to further crosslink, which causes...
Forum: Bicycle Mechanics
01-20-21, 09:09 AM
Replies: 190
Views: 13,973
Posted By cyccommute

Not sure where I have my nose that is in your...

Not sure where I have my nose that is in your area.

As for multiple quotes, I use them so that I make it easier for the reader to follow my point.



I’m not sure what this has to do with...
Forum: Bicycle Mechanics
01-19-21, 02:39 PM
Replies: 190
Views: 13,973
Posted By cyccommute

Rubber really isn’t going to fracture because of...

Rubber really isn’t going to fracture because of the cold at most any temperature you’ll encounter on this planet. Rubber doesn’t become hard enough to crack until you get to around -220°F (-150°C)....
Forum: Bicycle Mechanics
01-19-21, 09:56 AM
Replies: 190
Views: 13,973
Posted By cyccommute

If you look closely while he is pumping up the...

If you look closely while he is pumping up the tire, you can see the tube has herniated out of the tire. It looks to me like a section about 6” long at the bottom of the wheel. It’s very obvious...
Forum: Bicycle Mechanics
01-18-21, 01:10 PM
Replies: 190
Views: 13,973
Posted By cyccommute

My flats have almost nothing to do with the...

My flats have almost nothing to do with the conditions of the roads. They are all related to what is on the roads or on the places where I ride bikes. We have goat heads...
Forum: Bicycle Mechanics
01-17-21, 11:40 PM
Replies: 190
Views: 13,973
Posted By cyccommute

So where did you come up with this “only one flat...

So where did you come up with this “only one flat a week” rule? I’ve had 2 flats in 10 minutes less than 100 yards apart. And, no, the flats weren’t related.
I don’t agree with people who say that...
Forum: Bicycle Mechanics
01-14-21, 05:29 PM
Replies: 190
Views: 13,973
Posted By cyccommute

I was referring to this I just don’t...

I was referring to this



I just don’t see your point in the above quote.

I don’t see your point about not carrying patched tubes either. Your whole “I can feel the patch” is a level of...
Forum: Bicycle Mechanics
01-14-21, 01:50 PM
Replies: 190
Views: 13,973
Posted By cyccommute

I’m not sure what point you are trying to make. ...

I’m not sure what point you are trying to make. I check for what was making the puncture before I put the replacement tube back in. Not doing so is a rookie mistake. I even mark my tubes...
Forum: Bicycle Mechanics
01-13-21, 11:17 PM
Replies: 190
Views: 13,973
Posted By cyccommute

Most people carry a spare tube and patch later....

Most people carry a spare tube and patch later. Seldom have I had to actually patch on the road. It happens but just not all that often. Most of my flats I discover when I take the bike off the hook...
Forum: Bicycle Mechanics
01-03-21, 08:27 PM
Replies: 190
Views: 13,973
Posted By cyccommute

The link I provided goes into the chemistry...

The link I provided goes into the chemistry pretty extensively (I’m still working through the article). It does seem to be about hot vulcanization rather than cold. But it appears that stearic acid...
Forum: Bicycle Mechanics
01-03-21, 07:09 PM
Replies: 190
Views: 13,973
Posted By cyccommute

I see a whole lot more than just 3 folds,...

I see a whole lot more than just 3 folds, depending on how you count them. Each layer of the roll could be considered a “fold”. They certainly are stress points.

I suspect the valve has to be...
Forum: Bicycle Mechanics
01-03-21, 03:40 PM
Replies: 190
Views: 13,973
Posted By cyccommute

While you can do cold vulcanization in a bunch of...

While you can do cold vulcanization in a bunch of ways, most of them are very slow. The thiocarbamates you are talking about are added to the rubber of the patch. They are called secondary...
Forum: Bicycle Mechanics
01-03-21, 12:51 AM
Replies: 190
Views: 13,973
Posted By cyccommute

Okay, I think we got a failure to communicate...

Okay, I think we got a failure to communicate here. When you say “roll”, I see this

...
Forum: Bicycle Mechanics
01-02-21, 08:45 PM
Replies: 190
Views: 13,973
Posted By cyccommute

The ones I use are the from all over the place. ...

The ones I use are the from all over the place. I currently have tubes from REI, Quality Bicycle Products, Specialized, and others. All of them are oblong boxes. A rolled tube wouldn’t fit in that...
Forum: Bicycle Mechanics
01-01-21, 09:16 PM
Replies: 190
Views: 13,973
Posted By cyccommute

I have never seen a tube rolled in the box. ...

I have never seen a tube rolled in the box. Every one of them that I’ve ever taken out of a box was folded in about 3” sections. While it is true that folds can crack, that takes a long time...
Forum: Bicycle Mechanics
01-01-21, 07:02 PM
Replies: 190
Views: 13,973
Posted By cyccommute

I’ve had very good luck for many decades with...

I’ve had very good luck for many decades with tire liners. I’ve had a few flats from them wearing on the tube but that doesn’t happen very often. The Marathon Plus (and like tires) have the same...
Forum: Bicycle Mechanics
12-31-20, 10:25 AM
Replies: 190
Views: 13,973
Posted By cyccommute

So you’ve never made an mistake? Never...

So you’ve never made an mistake? Never misunderstood what someone said or wrote? Are you Mary Poppins...”practically perfect in every way”? Except you leave out the “practically”?

I have as...
Forum: Bicycle Mechanics
12-30-20, 06:46 PM
Replies: 190
Views: 13,973
Posted By cyccommute

Even in the goat head infested territory I live...

Even in the goat head infested territory I live in, they don’t “tend to collect in certain areas”. I am no more likely to get multiple flats in one general locality than another. Punctures are...
Forum: Bicycle Mechanics
12-30-20, 06:40 PM
Replies: 190
Views: 13,973
Posted By cyccommute

Nope. Didn’t say I wanted 30 tubes. I said that...

Nope. Didn’t say I wanted 30 tubes. I said that if I replaced tubes instead of patching them, I’d need 30 tubes. But even at $3 each, the math doesn’t work. That $106 worth of tubes ($90 plus $17.95...
Forum: Bicycle Mechanics
12-30-20, 01:59 PM
Replies: 190
Views: 13,973
Posted By cyccommute

Now that’s just silly. There is no higher chance...

Now that’s just silly. There is no higher chance that a puncture will occur in the same spot on the tire than it will occur on any other point on the tire. Punctures are random events.
Forum: Bicycle Mechanics
12-30-20, 01:52 PM
Replies: 190
Views: 13,973
Posted By cyccommute

Sure. $2.99 for the tube and $17.95 shipping to...

Sure. $2.99 for the tube and $17.95 shipping to the US. That not a “$4” tube. That’s a $20.94 tube.
Forum: Bicycle Mechanics
12-30-20, 10:20 AM
Replies: 190
Views: 13,973
Posted By cyccommute

Even at $4, that a lot of money over time. I buy...

Even at $4, that a lot of money over time. I buy boxes of 100 Rema patches that cost me about $0.15 each. A 5g tube of vulcanizing fluid will do about 10 patches and costs me about $4. Total cost...
Forum: Bicycle Mechanics
12-29-20, 11:18 AM
Replies: 190
Views: 13,973
Posted By cyccommute

I’m not saying that the patch doesn’t adhere to...

I’m not saying that the patch doesn’t adhere to the tube. I’ve patched enough tubes with bad patch kits to know that’s the way it works. I have seen patch jobs fail later...lots of them. At my...
Forum: Bicycle Mechanics
12-29-20, 10:12 AM
Replies: 190
Views: 13,973
Posted By cyccommute

I have seen a difference, in real time. My local...

I have seen a difference, in real time. My local co-op provides a patching station for no charge (donations are always willing accepted). For most of the 10 years I’ve been at the co-op, they used...
Forum: Bicycle Mechanics
12-28-20, 11:40 PM
Replies: 190
Views: 13,973
Posted By cyccommute

No. I’m not “reading the generic blurb on...

No. I’m not “reading the generic blurb on Amazon”. I’ve read the MSDSs for the materials. I’ve read papers on cold vulcanization and the chemistry of that cold vulcanization. I’ve also read things...
Forum: Bicycle Mechanics
12-28-20, 09:30 PM
Replies: 190
Views: 13,973
Posted By cyccommute

Yes, really. I’ve looked into this numerous...

Yes, really. I’ve looked into this numerous times due to these kinds of discussions. There’s a fair amount of sophisticated chemistry involved in Rema patches that isn’t used anywhere else. Look at...
Forum: Bicycle Mechanics
12-28-20, 10:19 AM
Replies: 190
Views: 13,973
Posted By cyccommute

If someone is going to have a problem with...

If someone is going to have a problem with patches, they probably won’t be Rema. Rema uses chemistry to make the bond between the patch and the tube. Other patch systems use physics to make the...
Forum: Bicycle Mechanics
12-27-20, 11:13 PM
Replies: 190
Views: 13,973
Posted By cyccommute

A patch using the proper patch kit will fuse to...

A patch using the proper patch kit will fuse to the rubber. In my experience there is only one patch kit that works that way...Rema TipTop. Anything else is just rubber cement and a bit of rubber...
Showing results 1 to 30 of 30


 
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