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Technical & Reference Section => Tech and Restoration => Topic started by: motomagII on August 04, 2006, 08:56 PM

Title: can someone measure a rim for me
Post by: motomagII on August 04, 2006, 08:56 PM

i need the erd effective rim diameter of an araya 7x please guys .this is the diameter of the rim minus 2x the measurement from the rim edge to the spoke nipple head inside the rim .please anyone

Title: Re: can someone measure a rim for me
Post by: oberonspacefruit on August 04, 2006, 08:57 PM

i dont have one.


do ya want a smartie instead. i have some smarties.

Title: Re: can someone measure a rim for me
Post by: aditup2004 on August 04, 2006, 08:57 PM

I have the "tools" to do this, but do not have a 7x rim. Sorry dude.
Ad  :daumenhoch:

Title: Re: can someone measure a rim for me
Post by: sawzall on August 04, 2006, 09:32 PM

does this sound right rim 421mm-18-18=385mm :-\

Title: Re: can someone measure a rim for me
Post by: steve on August 04, 2006, 09:39 PM

are they not 406mm -ectro sized?

Title: Re: can someone measure a rim for me
Post by: Steve P on August 04, 2006, 10:08 PM

Are you trying to calculate spoke length . . . maybe I can help  :)

Title: Re: can someone measure a rim for me
Post by: bof on August 04, 2006, 11:41 PM

type in spocalc into your search engine and you will find a spread sheet with loads of data on rims and hubs it will also tell you how to measure rims

Title: Re: can someone measure a rim for me
Post by: motomagII on August 05, 2006, 12:19 PM

im on spocalc but need the rim diameter to work it out .i am using araya 7x but the hub ive got isnt large or small flange its odd size .it had a flange diameter of 50mm .i am trying to get the spoke size for the build .greg

Title: Re: can someone measure a rim for me
Post by: aditup2004 on August 06, 2006, 10:16 AM

Try this Greg, it allows you to put in custom sizes.
http://www.wheelpro.co.uk/spokecalc/
Its not as hard as you think.
Ad  :daumenhoch:

Title: Re: can someone measure a rim for me
Post by: motomagII on August 06, 2006, 10:31 AM

come on guys got the calc bit but need the rim size as i cannot measure it at the moment myself (they are not at my place yet )

Title: Re: can someone measure a rim for me
Post by: Steve P on August 06, 2006, 11:19 AM

ERD = 393mm according to this on-line calculator . . .  !!! CLICKETY CLICK !!!  (http://www.geocities.com/d_halem/wheel/wheel.html)

Select Araya BMX (20" clincher, ISO 406) from the list then add your own hub dimensions, etc

Cheers

Steve  :daumenhoch: