Anyone Remember The ERD for the first Mavic Cosmic rim?
08-23-11, 01:04 PM
#1
greasy hermit
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Anyone Remember The ERD for the first Mavic Cosmic rim?
I'm building a 16 hole custom phil wood track hub to a mavic cosmic rim from the 90's (don't ask). I can't find the erd, don't feel like guessing it, was going to see if any old mechanics remember the ERD or know a place that has it posted. It's litteraly the first ever cosmic rim, its silver with yellow logos that say "cosmic" and "mavic".
this is a pic of the rim in question.
any help is greatly appreciated.
this is a pic of the rim in question.
any help is greatly appreciated.
08-23-11, 04:53 PM
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greasy hermit
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^ every time i try measuring a rim i double and triple check to make sure i got it right and then i'm still off, what equation/method do you suggest?
08-23-11, 05:15 PM
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I just use two spokes screwed all the way into the nipple and place them in from opposite sides measure the gap and then add that to the length of the 2 spokes.
08-23-11, 08:06 PM
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thats what i do but that doesn't account for spoke hole offset. ugh. looks like i gotta break out the measuring tape.
Last edited by geoluv; 08-23-11 at 08:09 PM.
08-23-11, 09:52 PM
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That's less than the rounding and so isn't material.
If you want to factor the offset, measure the distance from the rim centerline, and add or subtract it from the flange/center distance when entering that into your calculator.
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FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
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FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
08-24-11, 01:04 PM
#8
Constant tinkerer
My Cosmic wheel looks exactly like yours, but it has 18 spokes. It also has a Saturn Racing Team sticker. I wonder if it's newer than yours.
Sorry to not contribute to the actual thread...
Sorry to not contribute to the actual thread...
