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Post by theghabebandit on Feb 21, 2012 22:11:05 GMT -8
it's hard to find someone that hasn't felt your hotspots. WHORE.
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Post by Rushing on Feb 21, 2012 23:03:04 GMT -8
But why clip out on rides?
Keeping pedaling or GTFO.
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sids
chump
I posted 500 times and all I got was this stupid shirt.
Posts: 1,224
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Post by sids on Feb 21, 2012 23:19:33 GMT -8
Once you can beat Jose in a race you can tell him that
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Post by nlinealac on Feb 21, 2012 23:20:01 GMT -8
Cause your riding more then 20 miles and fast...... also fixed blows coasting owns.
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Post by Rushing on Feb 22, 2012 0:00:30 GMT -8
I practically never coast on long rides.
I'm usually clipped in when I travel from Boulder/Equestrian to Hollywood/Lake Mead and track stand at lights.
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Post by theghabebandit on Feb 22, 2012 2:59:53 GMT -8
dear rabbi,
happy birthday!
what's your favorite birthday memory?
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Post by remspeedwagon on Feb 22, 2012 7:38:27 GMT -8
I practically never coast on long rides. This is funny. Sometimes I forget I'm on a fixed gear and blow into a corner going too fast and try to coast |
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Post by nikki on Feb 22, 2012 9:09:10 GMT -8
done that
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Post by craig on Feb 22, 2012 9:15:55 GMT -8
dear rabbi, ghabe stole what i was gonna say. Happy birthday.
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Post by josr on Feb 22, 2012 11:43:04 GMT -8
i dont know what it is about the chrome kursk pros, but i haven't experienced any "hot spots", is it because i dont push harder enough? or is it because chrome nailed the proper arch support? or is it because i have a unique bone structure in my feet? the world may never know.
oh and another thing i clip out on rides only to let everyone else catch up.
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Post by rabbi on Feb 22, 2012 13:09:57 GMT -8
If you think those shoes have great arch support...you must have pretty flat feet.
Ghabe, in the past, I've had some awful luck on my birthdays. @4, I got into a car accident. 14, I broke my ankle 30min into a 3hr session @ planet plywood where we rented out for my birthday. 21, I don't even remember. Haha.
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Post by craig on Feb 22, 2012 13:51:32 GMT -8
hahahaha at the broken ankle part.
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Post by Rushing on Feb 22, 2012 14:11:32 GMT -8
Not remembering at 21 seems logical if you drink ,in moderation or not.
But your birthdays sound more exciting than most of mine.
Happy birthday, Rabbi!
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Post by nlinealac on Feb 22, 2012 16:20:58 GMT -8
I'm kinda with jose on this. Don't get hot spots to bad in my kursk pros. The are actually pretty stiff. I get terrible hot spots in my shimanos.
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Post by theghabebandit on Feb 22, 2012 16:46:46 GMT -8
it seems chrome has their shit together.
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Post by craig on Feb 22, 2012 17:04:00 GMT -8
How I can best explain this from the buddingly small engineering background I have is:
Break this up into two explanations, both going hand-in-hand to show why the kursk doesn't get hotspots as easily:
1) Your kursk pro has rubber between the cleat and your sole whereas your shimano shoes are just hard plastic between the cleat and the sole. Plastic transfers heat more efficiently than does rubber. Oppositely, rubber is not a good conductor of heat, ergo less heat transfer to your foot.
2) A plastic soled shoe has much less impulse (Ft=mv where Force*time is Impulse and m is mass and v is final minus initial velocity) to absorb the force put down by your pedal stroke. Separately, a rubber soled shoe like the kursk pro has much more impulse due to the nature of the material. Because the time of the force applied to the pedal/cleat is lengthened due to the compression of the rubber, the force is spread out and ultimately lessened as compared to the plastic sole's force. This is why the bumper on your car or the styrofoam in your helmet is supposed to crumble: to lengthen the amount of time of the impact, thus alleviating force directing toward your car/head.
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Post by theghabebandit on Feb 22, 2012 17:09:51 GMT -8
so why choose plastic soles over rubber then?
to save weight?
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Post by craig on Feb 22, 2012 17:14:22 GMT -8
Plastic soles/Crabon soles are more applicable to performance (racing), where rubber is more applicable to an everyday type shoe that I can clip into my pedals with but also walk around with.
The reason Nick says his kursks are stiff is because they actually are, albeit not as stiff as a crabon/plastic sole. Kursks have a metal plate where the cleat attaches to. This also goes further to proving my point. That metal plate is an excellent conductor of heat, which would lead one to think that the kursk would have hotspots, but it is spread out and encased in the rubber sole of the shoe which sort of dissipates the heat rather than centralizing it.
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Post by craig on Feb 22, 2012 17:23:32 GMT -8
Gahh why can't more of the people that visit this site participate in discussions like this. I love talking about physics when bikes are involved.
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Post by nlinealac on Feb 22, 2012 18:39:26 GMT -8
1. The contact point for the cleat on a kursk pro is directly to the plastic shank, no rubber between the cleat and the footbed.
2. Hotspots refer to presure points not actual points on increased temp.
3. The plastic sole of the kursk is far thicker (thats what she said) and heavier then that of the shimano. Therefore you feel less presure where the cleat contacts the sole.
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sids
chump
I posted 500 times and all I got was this stupid shirt.
Posts: 1,224
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Post by sids on Feb 22, 2012 18:53:59 GMT -8
No hotspots on the midway pro either
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Post by craig on Feb 22, 2012 19:07:09 GMT -8
1) I should have actually looked into the kursk before I blabbered on like that. Haha 2) Haha. I feel stupid, but why not call them fucking pressure points then? Misleading as fuck. 3) This is what I'm not getting. Looking at the picture of the exploded components:  It looks like you would feel loads more pressure points in the foot because the cleat shank is directly at your foot, only covered by the footbed. And what type of shimano shoes are you talking about? Because I know that there are thicker plastic soles than the kursk's nylon one. I guess that nylon sole is just incredibly stiff so it wouldn't flex at the contact point and apply pressure to your foot. Hats off to them for that. |
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Post by nlinealac on Feb 22, 2012 19:11:47 GMT -8
I have hella cheap shimanos.
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Post by rabbi on Feb 22, 2012 20:34:59 GMT -8
It's also because you're not going out and doing 50mi in your chrome shoes.
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Post by nlinealac on Feb 22, 2012 20:37:58 GMT -8
Not doing that in my sims either. Shims for spin class.
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Post by josr on Feb 22, 2012 22:52:24 GMT -8
interesting
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Post by Rushing on Mar 1, 2012 15:58:15 GMT -8
Dear, Rabbi
I guess Rich doesn't work at Pro Cyclery anymore?
I called today and a woman mentioned that he works Pro Wheel Builder and what not.
I may just have him cut the spokes and have you put it together, if you have the time for it.
Money is no issue for me.
Aside from that, I tried ordering a frame set from City Grounds, but they suggest I find out my height and inseam length first, so I am off to do that at REI. Hopefully I am correct in wanting to order a 54cm frame set.
Anyway, hope you're having a good day or better yet I hope you have a great weekend.
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Post by craig on Mar 1, 2012 16:14:46 GMT -8
Rich sold ProCyclery, so now he just owns ProWheelBuilder. Sad face.
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Post by rabbi on Mar 1, 2012 21:21:04 GMT -8
Don't buy a frame based on height and inseam and don't buy from a place that sizes you according to those.
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Post by Rushing on Mar 1, 2012 21:51:32 GMT -8
I can only find a Bareknuckle on eBay, City Grounds and the EAI website, but the EAI website is weird when it comes to trying to purchase something.
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