Go Back  Bike Forums > Search Forums
Reload this Page >

Search Results

Notices
Search: Posts Made By: cyccommute
Showing results 1 to 22 of 22
Search took 0.03 seconds.
Forum: Touring
08-26-22, 04:10 PM
Replies: 76
Views: 2,209
Posted By cyccommute

The dragging isn’t because of a lower speed but...

The dragging isn’t because of a lower speed but because of more friction to keep the bike at that lower speed. The average speed isn’t the issue. It’s the need to apply more friction to keep the bike...
Forum: Touring
08-26-22, 09:30 AM
Replies: 76
Views: 2,209
Posted By cyccommute

I still stand by that statement. ...

I still stand by that statement.



Perhaps I should have said “almost” as cool. It would be mostly a wash (more on that later). But continuously squeezing the brakes to reduce the speed only...
Forum: Touring
08-25-22, 10:49 PM
Replies: 76
Views: 2,209
Posted By cyccommute

Not necessarily a large amount of heat but more...

Not necessarily a large amount of heat but more heat than if you didn’t apply the brakes at all…or even intermittently. Yes, continuous braking is continuously pumping heat into the rims. Pulse...
Forum: Touring
08-25-22, 09:46 AM
Replies: 76
Views: 2,209
Posted By cyccommute

On page 256 of the 3rd edition he states ...

On page 256 of the 3rd edition he states



The citation is Wilson, (1993), “Rim temperatures during downhill braking.” Human Power 10, no. 3 (Spring/Summer), 15-18....
Forum: Touring
08-25-22, 09:26 AM
Replies: 76
Views: 2,209
Posted By cyccommute

As a scientist, I know how the process works....

As a scientist, I know how the process works. Even the most learned scientist is not entirely right all the time nor is what they write (or study) all inclusive and the last word on the subject. Nor...
Forum: Touring
08-24-22, 04:16 PM
Replies: 76
Views: 2,209
Posted By cyccommute

Thatís your opinion. You are wrong. ______ ...

Thatís your opinion. You are wrong.
______



Nope. But again your scenarios are wrong and ridiculous. Why would someone want to ďpinky dragĒ to keep their speed 0.5mph lower? Why would the...
Forum: Touring
08-24-22, 03:42 PM
Replies: 76
Views: 2,209
Posted By cyccommute

While I admire Dr. Wilsonís work, I think he has...

While I admire Dr. Wilsonís work, I think he has drawn a wrong conclusion in this case. He seems to assume that the temperature decreases with speed is due to the increase airflow. However, he...
Forum: Touring
08-24-22, 08:33 AM
Replies: 76
Views: 2,209
Posted By cyccommute

If there is no speed difference, then why drag...

If there is no speed difference, then why drag your brakes? If there is no need to slow down you should just let the bike go. It doesn’t matter if the pressure on the brake is hard or light, any...
Forum: Touring
08-23-22, 04:29 PM
Replies: 76
Views: 2,209
Posted By cyccommute

Pick any speed you like. Yes, a bike that is...

Pick any speed you like. Yes, a bike that is pulse braked is going to go faster than one that where the brakes are dragged for any given road or slope. Thatís the reason people drag their brakesÖto...
Forum: Touring
08-23-22, 11:47 AM
Replies: 76
Views: 2,209
Posted By cyccommute

There is no need for an analogy when you have a...

There is no need for an analogy when you have a real world example. Your analogy isn’t easier to understand because it is wrong.



Your examples have been predicated on the idea that the...
Forum: Touring
08-23-22, 10:28 AM
Replies: 76
Views: 2,209
Posted By cyccommute

It’s not my fault it’s a poor analogy. Although...

It’s not my fault it’s a poor analogy. Although I’ve explained the real world situation several times and it is easier to understand as well as more valid, here it is again:

Let’s assume the heat...
Forum: Touring
08-22-22, 06:20 PM
Replies: 76
Views: 2,209
Posted By cyccommute

Again, your analogy is flawed. Letís try to fix...

Again, your analogy is flawed. Letís try to fix it. Instead of water, letís use a liquid that evaporates at a rate that is just slightly slower than the rate it drips in. Letís start with the glass...
Forum: Touring
08-19-22, 10:43 PM
Replies: 76
Views: 2,209
Posted By cyccommute

QUOTE=Yan;22615701]This is exactly slinky braking...

QUOTE=Yan;22615701]This is exactly slinky braking you're describing right here. I'm sorry but if I had to ride like that I would go insane.[/QUOTE]

You are making too much out of what Iím calling...
Forum: Touring
08-19-22, 09:41 PM
Replies: 76
Views: 2,209
Posted By cyccommute

Agreed. The fastest Iíve done on a single bike is...

Agreed. The fastest Iíve done on a single bike is 52 mph in a full tuck. Iíve hit 55 on a tandem on an 11% grade. Add panniers and itís tough to get past about 45 mph. But, like you, Iíd just let it...
Forum: Touring
08-19-22, 06:30 AM
Replies: 76
Views: 2,209
Posted By cyccommute

No, my understanding of physics isnít ďwrongĒ. I...

No, my understanding of physics isnít ďwrongĒ. I know that Iím braking at corners to maintain control. Iím not braking in the straights to avoid heat build upÖat least not braking constantly in the...
Forum: Touring
08-18-22, 08:44 AM
Replies: 76
Views: 2,209
Posted By cyccommute

A ďheatsinkĒ is just what it sounds likeÖa place...

A ďheatsinkĒ is just what it sounds likeÖa place to sink heat into. It can be a heat exchanger but not necessarily. Metal can ďsinkĒ (or absorb) a whole lot of heat because of the metalís high melt...
Forum: Touring
08-17-22, 09:09 AM
Replies: 76
Views: 2,209
Posted By cyccommute

It does make a large difference. As pointed out...

It does make a large difference. As pointed out above, when the brakes are off, no heat is being put into the system. Think of it this way: Pulsing the brakes hard, heats the surface of the rim. ...
Forum: Touring
08-16-22, 01:41 PM
Replies: 76
Views: 2,209
Posted By cyccommute

I’ve never heard of a chemical engineer being...

I’ve never heard of a chemical engineer being called a ChemE nor of a group of them being called ChemEs. I’ve heard of them being called a chem. e. (with or without the punctuation). You were unclear...
Forum: Touring
08-16-22, 08:45 AM
Replies: 76
Views: 2,209
Posted By cyccommute

Not sure what or who ChemES is but I find your...

Not sure what or who ChemES is but I find your description hard to believe. Even if the rim were at the boiling point, you would have to get water into the rim which would be difficult considering...
Forum: Touring
08-15-22, 05:48 PM
Replies: 76
Views: 2,209
Posted By cyccommute

Just because you see steam doesn’t mean that the...

Just because you see steam doesn’t mean that the rim is at the boiling point of water. Water vapor can condense at various temperatures depending on the dew point at the time the water vapor...
Forum: Touring
08-14-22, 06:22 PM
Replies: 76
Views: 2,209
Posted By cyccommute

I canít say for certain but if the tube were...

I canít say for certain but if the tube were heated outside of a tire, it likely would deform permanently. Inside a tire, the tube is constrained and likely wouldnít blow out. The tire would have...
Forum: Touring
08-14-22, 11:22 AM
Replies: 76
Views: 2,209
Posted By cyccommute

Thermoplastic polyurethane (TPU) tubes shouldn’t...

Thermoplastic polyurethane (TPU) tubes shouldn’t have issues with increases in pressure due to heat as the pressure increase is much smaller than people think…on the order of 1 psi increase for each...
Showing results 1 to 22 of 22


 
Forum Jump

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2022 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.