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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  20 x 1 3/8 details
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Author Topic: 20 x 1 3/8 details  (Read 872 times)

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firebird

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20 x 1 3/8 details
« on: March 07, 2009, 11:24 PM »
looking at buying some 20 x 1 3/8 UKAIS wheels. just need to know the measurement from the center of the axel to the center of the rim face. just working out what rear caliper i need. any help would be great  :daumenhoch:

cheers steve

Offline jT Racing

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Re: 20 x 1 3/8 details
« Reply #1 on: March 07, 2009, 11:34 PM »
depends on what frame fork combo your using, but a short reach caliper is needed for sure. i have a few, weinman and shimano 60 and 50 mm reach. look at some mini's in the museum
ding dong

firebird

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Re: 20 x 1 3/8 details
« Reply #2 on: March 07, 2009, 11:44 PM »
ok, im using a dp firebird, i know the details on the caliper so just need the measurement of the wheels, that way i can work out if they will be ok

steve

Offline jT Racing

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Re: 20 x 1 3/8 details
« Reply #3 on: March 07, 2009, 11:47 PM »
give me a sec, i'll grab the tape :LolLolLolLol:
ding dong

firebird

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Re: 20 x 1 3/8 details
« Reply #4 on: March 07, 2009, 11:48 PM »
nice one  :daumenhoch:

Offline jT Racing

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Re: 20 x 1 3/8 details
« Reply #5 on: March 07, 2009, 11:51 PM »
46cm outside edge diameter. so i guess 22cn from axle centre to brake block centre.
ding dong

firebird

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Re: 20 x 1 3/8 details
« Reply #6 on: March 07, 2009, 11:57 PM »
nice one, looks like the caliper isn't going to reach. i know at the most the caliper has a reach of 60mm and this would mean the axel will be butted right up into the rear dropout. so i need a longer caliper, around 80mm.
this is with the axel being fitted around the center of the dropout.

many thanks for your help  :daumenhoch:

Offline jT Racing

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Re: 20 x 1 3/8 details
« Reply #7 on: March 08, 2009, 12:01 AM »
no probs ;)
ding dong

RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  20 x 1 3/8 details
 

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