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-   -   Ask your small, random, track-related questions here (http://www.bikeforums.net/track-cycling-velodrome-racing-training-area/924726-ask-your-small-random-track-related-questions-here.html)

Pantani98 12-27-13 03:36 PM

Quote:

Originally Posted by dro.pru (Post 16361278)
Track bags. I beleive Chicago velodrome sells one.
Maybe another one of the track specific vendors. I sew, so i planned on making my own once i find the time.

Do a search for Chicago Velodrome or my user name. I bought one and posted some pics. The bag is perfect for holding all your gearing and some tools.

Soil_Sampler 12-27-13 07:13 PM

frictional loss
 
Quote:

Originally Posted by Racer Ex (Post 16354567)

Big ass gears. Less RPM, less frictional loss.

Interesting discussion.

some trackkies are spinners, others are grinders.


Big rings and cogs vs. small rings and cogs?

56/15 vs. 49/13

almost same rpm, more frictional loss with the smaller setup!?

Jaytron 12-27-13 08:29 PM

What chains do you guys recommend?

Baby Puke 12-28-13 08:48 AM

I use the black/blue HKK chain, the cheapest NJS one. Bulletproof. What were you using that broke?

Jaytron 12-28-13 09:20 AM

Quote:

Originally Posted by Baby Puke (Post 16363657)
I use the black/blue HKK chain, the cheapest NJS one. Bulletproof. What were you using that broke?

KMC 710SL

I figured the master link had crapped itself, but I actually snapped a regular link somewhere.

Baby Puke 12-28-13 11:46 AM

Quote:

Originally Posted by Jaytron (Post 16363720)
KMC 710SL

I figured the master link had crapped itself, but I actually snapped a regular link somewhere.

That's pretty crazy. How old was the chain? I have never seen a 1/8" chain break.

carleton 12-28-13 01:51 PM

Quote:

Originally Posted by Jaytron (Post 16363720)
KMC 710SL

I figured the master link had crapped itself, but I actually snapped a regular link somewhere.

How?

Did you ever take a pin out and push it back in or something?

Quote:

Originally Posted by Baby Puke (Post 16363970)
That's pretty crazy. How old was the chain? I have never seen a 1/8" chain break.

Me either.

Quinn8it 12-28-13 04:11 PM

Quote:

Originally Posted by carleton (Post 16356339)
bmontgomery, also consider the KMC K710 or K710-SL. These are about $20-25 and should be at local shops that cater to BMX or Fixed-Gear riders. It's burly chain made for BMX freestyle (which can be hard on chains) but is rated for like 4,000lbs of break force. It's heavier than others, but it's inexpensive, quiet, and strong.

Carleton-
Any difference between the K710 and the K710sl...
I know that the SL is lighter... Wondering if its any real gain- or loss?
compare to the KMC D101?

The K710 is $14 on Amazon Prime right now- so it will al least be my off season chain...

Jaytron 12-28-13 05:37 PM

Quote:

Originally Posted by carleton (Post 16364201)
How?

Did you ever take a pin out and push it back in or something?



Me either.

I DID do that once. Accidentally had a pin come all the way out on me. Is that what did it?

Nagrom_ 12-28-13 06:10 PM

Yup.

carleton 12-28-13 07:12 PM

Quote:

Originally Posted by Quinn8it (Post 16364446)
Carleton-
Any difference between the K710 and the K710sl...
I know that the SL is lighter... Wondering if its any real gain- or loss?
compare to the KMC D101?

The K710 is $14 on Amazon Prime right now- so it will al least be my off season chain...

"SL" means Super Light. It just refers to the cutouts in the plates. Instead of having something like 4,000lbs of force required to break it, it requires 3,800, hahaha. It's a great option. I use that one, too.

Jaytron 12-28-13 08:41 PM

Quote:

Originally Posted by Nagrom_ (Post 16364634)
Yup.

Why?

Nagrom_ 12-28-13 09:04 PM

Quote:

Originally Posted by Jaytron (Post 16364887)
Why?

Mushroomed pins aren't to be pushed back in.

Jaytron 12-28-13 09:18 PM

Quote:

Originally Posted by Nagrom_ (Post 16364924)
Mushroomed pins aren't to be pushed back in.

http://forums.crackberry.com/attachm...-face-meme.png

TrackMonkey7 12-28-13 10:37 PM

On the subject of chains, can Pintle chains be considered for racing? Or should those be left for fixie crowd?

big chainring 12-28-13 10:51 PM

Ask your small, random, track-related questions here
 
Any fans of inch pitch chains and cogs? Anyone use them anymore?

queerpunk 12-29-13 10:10 AM

i don't know why anyone would bother.

big chainring 12-29-13 11:57 AM

What do you use for a jamming tool?

Impreza_aL 12-29-13 05:08 PM

oops.

big chainring 12-29-13 05:17 PM

Ask your small, random, track-related questions here
 
Do like riding at the front or at the back in a miss and out.

queerpunk 12-29-13 05:19 PM

the back.

Racer Ex 12-29-13 08:03 PM

Quote:

Originally Posted by Soil_Sampler (Post 16362727)
some trackkies are spinners, others are grinders.


Big rings and cogs vs. small rings and cogs?

56/15 vs. 49/13

almost same rpm, more frictional loss with the smaller setup!?

That would be the case.

Pretty simple physics; assuming the same wheel speed the tighter the radius the more a chain has to bend so there's more friction in the roller and side plates if they are loaded. Friction = power loss. How much loss and whether that's worth paying attention to is subjective. Thing with going to bigger rings and cogs is you add weight and some aero drag. Balancing that equation takes some time and access to things most people don't have.

My quick mental mull would say bigger is a net gain. As an endurance guy who's lost a gold at Nats by one tick, it's worth paying attention to this stuff, but I also have a lot of time to work on other things. If you had 10 minutes to train, or ten minutes to calc a day, the benefit of the former would be obvious.

wens 12-30-13 08:59 AM

Quote:

Originally Posted by Jaytron (Post 16364573)
I DID do that once. Accidentally had a pin come all the way out on me. Is that what did it?

Aren't those hollow pins? Master links exist largely because You're really likely to damage hollow pins pushing them in.

Jaytron 12-30-13 10:15 AM

Quote:

Originally Posted by wens (Post 16367481)
Aren't those hollow pins? Master links exist largely because You're really likely to damage hollow pins pushing them in.

They are hollow. TIL to not do that.

Kayce 12-30-13 12:20 PM

Quote:

Originally Posted by big chainring (Post 16366400)
Do like riding at the front or at the back in a miss and out.

Depends on the field. Smaller fields I like to be around the back the whole way. But a big field I will stay up front for the first half. Playing the devil the whole race is a lot of fun, but wears you out. It is good for working on points race skills. So sometimes I will be devilin' as long as I can.


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