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Technical & Reference Section => Tech and Restoration => Topic started by: Munnyella on April 15, 2010, 07:58 AM
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Can any one tell me the size of the holes in pro class rims? (or where I can get them from? :LolLolLolLol:)
I fancy doing a set of 48 hole proclass rims for my street rider, might have to do the holes smaller than 36ers though.
Mark
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i wouldnt advise drilling 48s man esp if they are double wall rims mongoose pro class were just single wall arayas drilled i just restored a set i wouldnt like to try and drill a set of rims unles i had serious engineering facilities and you definitely dont want to drill the holes the same size as 36h pc rims on 48s they will just fall apart my advice is find something else to tinker with.
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Didn't Fly Bikes and Proper do a pro-class style new school wheel?
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Hole size should not make a big difference, 48 spokes will have better liner stress displacement that 36 and with the rim having a double wall it will help (a bit).....that said, it depends what the rims intended use is for.......and the overall mass placed on the rim......e.g are you a 6’ 2” chunky monkey !!! :crazy2:
I’ve done a set of 36's myself, although I used a £63,000 CNC miller.........handy if you've got one !!!! :2funny:
But It’s very easy to do a set manually..(you will need to de-spoke the rim)..will just take a while as to do it correct you’d have to “drill” each hole three times..... :shocked:
I would go with a smaller hole simply because you have a smaller gap between the spokes and aesthetically it would look better. :daumenhoch:
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That looks a nice sized hole.... :daumenhoch:
And you cannot beat a nice sized hole >:D
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Hole size should not make a big difference, 48 spokes will have better liner stress displacement that 36 and with the rim having a double wall it will help (a bit).....that said, it depends what the rims intended use is for.......and the overall mass placed on the rim......e.g are you a 6’ 2” chunky monkey !!! :crazy2:
I’ve done a set of 36's myself, although I used a £63,000 CNC miller.........handy if you've got one !!!! :2funny:
But It’s very easy to do a set manually..(you will need to de-spoke the rim)..will just take a while as to do it correct you’d have to “drill” each hole three times..... :shocked:
I would go with a smaller hole simply because you have a smaller gap between the spokes and aesthetically it would look better. :daumenhoch:
Rim driller. :-* :-* :-*
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i use a cone-cutter, done afew sets and you only have to drill once ;)
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(http://www.radbmx.co.uk/archive/albums/a332/hardcor3_/SDC11560.jpg)
(http://www.radbmx.co.uk/archive/albums/a332/hardcor3_/SDC10430.jpg)
(http://www.radbmx.co.uk/archive/albums/a332/hardcor3_/SDC10431.jpg)
(http://www.radbmx.co.uk/archive/albums/a332/hardcor3_/SDC10434.jpg)
(http://www.radbmx.co.uk/archive/albums/a332/hardcor3_/SDC10438-1.jpg)
:daumenhoch:
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Good results :4_17_5:
I was thinking:
Pilot Hole
Drill Hole
Ream Hole......Hummm nothing like reaming a hole >:D
:daumenhoch:
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what's the proper size on proper pro class? and what are the hole centers, centre to centre?
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i wasnt thinking anything to do with the strength just that it wud be a bastard to drill 94 holes in rims without a jig. good luck tho my og pro class rims a looking real nice with green foils
(http://www.radbmx.co.uk/archive/albums/c160/risetothunder/bmx/mongoose%20restoration/Image0350.jpg)
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I have a pillar drill, the rims are already de spoked and i'm gonna make a jig so each hole is exactly as wrong as the other.
Step drill is a good idea, might give that a whirl, I reckon on a finshed hole size of 7mm will be OK.
They are single wall arayas if that makes a diiference.
Mark M
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Can any one tell me the size of the holes in pro class rims?
Joff (NORTY40) measured them at 10.77mm on a digital caliper :daumenhoch:
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Can any one tell me the size of the holes in pro class rims?
Joff (NORTY40) measured them at 10.77mm on a digital caliper :daumenhoch:
The less said about that the better :yahoo_silent:
Not one of my better jobs :LolLolLolLol: ( John , bobafett was rolling around in my garage pi55ing his sides when he saw my attempt !! )
Hope you have more luck with it than I did Mark :daumenhoch: