Your latest bike project?

[ShawnoftheDread]

@dkel 162119 wrote:

I didn’t realize till the whole thing was laced that I had ignored my plan and gotten the label off to one side.

Well now we have the answer to what you should do next.

[hozn]

@hozn 162047 wrote:

Anyway, I’m happy to ride and race on the frame now (I’m doing Hilly Billy Roubaix on it this weekend!) and I assume it’ll travel great. I’m hopeful that with a bit more attention to detail on cleaning out the couplers, applying the correct grease, etc. I can quiet any noises more permanently.

Well, I took off the coupler and cleaned it out — it was really dirty in there, lubed it with the flu grease and tightened it with the new — much better — tool from S&S and it has been perfectly quiet now. Including all 5+ hours of HBR today. So I believe the problem is dirt — or maybe never getting a clean coupler contact on account of dirt.

I saw that S&S actually puts a big warning to cover the couplers on wet or dirty rides. Seems excessive, but I took preventative measures today!

[hozn]

@dkel 161944 wrote:

My main point of confusion is why it would squeak some days and not others. Humidity? Road dust? My soles are not carbon, so it doesn’t seem to be materials exclusive.

I figured out that the squeaking on my shoes is actually the rubber tread rubbing against the pedal. I filed it down and now it is completely cured for the right shoe — and is better, but needs a bit more filing, on the left.

[dkel]

@hozn 162152 wrote:

I figured out that the squeaking on my shoes is actually the rubber tread rubbing against the pedal. I filed it down and now it is completely cured for the right shoe — and is better, but needs a bit more filing, on the left.

Did you remove enough material so that the only contact between the shoe and the pedal is at the cleat? Or is the filed area just a different, less squeaky texture now?

[hozn]

@dkel 162153 wrote:

Did you remove enough material so that the only contact between the shoe and the pedal is at the cleat? Or is the filed area just a different, less squeaky texture now?

Yeah, that was my intent — only contact being the cleat and then the (carbon) around the clear of course. I will shave off a bit more on the left shoe.

[TwoWheelsDC]

Just posted my new bike in the other thread, but figured my old bike could go here. Swapped cranks and the wheelset with the new bike (stuff from my old bike was better) and converted this into an all-weather commuter. Also threw on a set of SKS Longboards and a rack I had lying around and now it’s ready for action.

[hozn]

@TwoWheelsDC 162156 wrote:

Just posted my new bike in the other thread, but figured my old bike could go here. Swapped cranks and the wheelset with the new bike (stuff from my old bike was better) and converted this into an all-weather commuter. Also threw on a set of SKS Longboards and a rack I had lying around and now it’s ready for action.

It is definitely cool enough to get its own call out!

[ginacico]

@hozn 162151 wrote:

Well, I took off the coupler and cleaned it out — it was really dirty in there, lubed it with the flu grease and tightened it with the new — much better — tool from S&S and it has been perfectly quiet now. Including all 5+ hours of HBR today. So I believe the problem is dirt — or maybe never getting a clean coupler contact on account of dirt.

I saw that S&S actually puts a big warning to cover the couplers on wet or dirty rides. Seems excessive, but I took preventative measures today!

All great to hear (and I elited your post for the picture)!!

[hozn]

Practice packing. This is actually not how I will pack the bike, but it was an early learning attempt. Cassette side down worked better and I flipped it so that the hydro levers are not pressing against the bottom of the case. I also ended up removing the fork. I don’t think that was completely necessary, but it let things fit together a little more compact and only adds a couple minutes to reassembly.

The case bulges out a tiny bit, but I think I am going to leave [just enough] air in my (30mm) tires. It is risky; I could open it up to a mess of sealant on the other side, but I really don’t want to lose tubeless (I am pretty sure I cannot reseat those tires with a hand pump).

[vern]

I have no idea if this matters, but I wonder what happens to the air pressure in the tires in the ascent/descent to 35K feet?

[vvill]

@vern 162413 wrote:

I have no idea if this matters, but I wonder what happens to the air pressure in the tires in the ascent/descent to 35K feet?

My understanding is that it rises by about 10-20 psi, generally not enough to really matter – but enough that you don’t necessarily want 80+ PSI in tires, or much more than 35psi in say, gravel tubeless ones. I just deflate mine a bit.

[Vicegrip]

It stays the same*. The air pressure outside of the tire air chamber drops. :rolleyes: The sun does not go down the horizon goes up. The most it could drop is 14.7 psi but if that happens that is the least of your worries as the aircraft is no longer in the earths atmosphere. OTOH the view would great! If I had tubeless I might drop the pressure a bit but not much. There is a risk of having a bead be pushed on by some other bike part or other luggage, unseat and drool tire slime all over the bike.

* I bet the internal pressure does drop a little as the air temps in the hold will drop.

[trailrunner]

@vern 162413 wrote:

I have no idea if this matters, but I wonder what happens to the air pressure in the tires in the ascent/descent to 35K feet?

Assuming no change in temperature, the absolute pressure in the tire doesn’t change, but the the gauge pressure (pressure relative to the ambient, or atmosphere) will change. On the ground, the ambient pressure is 14.7 psi, so even if you were to fly to vacuum of outer space where the ambient pressure is zero, the gauge pressure of the tire will increase 14.7 psi.

[mstone]

@trailrunner 162419 wrote:

Assuming no change in temperature, the absolute pressure in the tire doesn’t change, but the the gauge pressure (pressure relative to the ambient, or atmosphere) will change. On the ground, the ambient pressure is 14.7 psi, so even if you were to fly to vacuum of outer space where the ambient pressure is zero, the gauge pressure of the tire will increase 14.7 psi.

And then your eyes will do this: [ATTACH=CONFIG]15079[/ATTACH] True fact.

[hozn]

@Vicegrip 162418 wrote:

It stays the same*. The air pressure outside of the tire air chamber drops. :rolleyes: The sun does not go down the horizon goes up. The most it could drop is 14.7 psi but if that happens that is the least of your worries as the aircraft is no longer in the earths atmosphere. OTOH the view would great! If I had tubeless I might drop the pressure a bit but not much. There is a risk of having a bead be pushed on by some other bike part or other luggage, unseat and drool tire slime all over the bike.

* I bet the internal pressure does drop a little as the air temps in the hold will drop.

Yeah, I might add a bit of air. I dropped them down to around 20psi (normally 50ish); they are holding on well, but the risk of losing the bead is a real one. On the way home I will definitely let out the air as it’ll help the bars / brake hoods fit a bit easier. I guess worst case I’ll arrive to a few oz of sealant in the suitcase and be back where I would have started with tubes.

[Author]

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