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Technical & Reference Section => Tech and Restoration => Topic started by: BENDYCAT ELEVENTEEN on March 16, 2013, 01:39 PM

Title: what size is your hole ?
Post by: BENDYCAT ELEVENTEEN on March 16, 2013, 01:39 PM

What size are the holes in Pro class rims ?

cheers B  :D

Title: Re: what size is your hole ?
Post by: Tony1971 on March 16, 2013, 03:07 PM

Mine seem to be 11mm on standard rims and 9mm on 20 X 1 3/8.

Tony

Title: Re: what size is your hole ?
Post by: john4130 on March 16, 2013, 03:48 PM

mines are 11mm too, so thats the drill size i used when i made my own for my ammaco.  ;)
(http://www.radbmx.co.uk/archive/albums/n203/john4130/ammaco4copy_zps45229df1.jpg)
original ones on my race inc i bought off tim march
(http://www.radbmx.co.uk/archive/albums/n203/john4130/raceinc-1.jpg)

Title: Re: what size is your hole ?
Post by: BENDYCAT ELEVENTEEN on March 16, 2013, 04:09 PM

so that's to use a 10mm drill to get a 11mm hole - as i thought that the hole had a little tapper on the top ?

any original rim close ups ?


cheers  B  :angel:

Title: Re: what size is your hole ?
Post by: john4130 on March 16, 2013, 04:38 PM

my original ones didn't have a small countersink, just a straight hole. i did give the ones on my ammaco a little countersink just to get rid of the sharp edge. here's a pic of my originals before i stripped them of the silver ano. sorry not the best pic
(http://www.radbmx.co.uk/archive/albums/n203/john4130/IMG_0644.jpg)

Title: Re: what size is your hole ?
Post by: BENDYCAT ELEVENTEEN on March 16, 2013, 04:46 PM

And what was your method of drilling ?  ;)

Title: Re: what size is your hole ?
Post by: mattbloke on March 16, 2013, 04:50 PM

a drill and a drill bit works great  :daumenhoch:

Title: Re: what size is your hole ?
Post by: BENDYCAT ELEVENTEEN on March 16, 2013, 05:28 PM

I was going to use your sharp wit  :2gunsfiring_v1:

Title: Re: what size is your hole ?
Post by: sawzall on March 16, 2013, 05:36 PM

mark out rim then use a 3mm drill bit as a pilot hole then work up in stages to 10-11mm :daumenhoch:

Title: Re: what size is your hole ?
Post by: BENDYCAT ELEVENTEEN on March 16, 2013, 05:53 PM

and best method to get out flat spots in the rim ?

Title: Re: what size is your hole ?
Post by: Retrodan72 on March 16, 2013, 06:07 PM

Quote from: mattbloke on March 16, 2013, 04:50 PM

a drill and a drill bit works great  :daumenhoch:

 :LolLolLolLol: :4_17_5:

Title: Re: what size is your hole ?
Post by: Pooch on March 16, 2013, 07:43 PM

 :smitten:
(http://i1038.photobucket.com/albums/a469/Poochy_06/IMG_0469.jpg)

Title: Re: what size is your hole ?
Post by: BENDYCAT ELEVENTEEN on March 16, 2013, 08:20 PM

Looking sweet Poochy, what are they going on ?

Title: Re: what size is your hole ?
Post by: not johndub71 on March 16, 2013, 09:19 PM

What about a cone step drill. Nice finish from them.

Title: Re: what size is your hole ?
Post by: BENDYCAT ELEVENTEEN on March 16, 2013, 09:39 PM

t's getting it in straight and maybe making a jig ?

Title: Re: what size is your hole ?
Post by: Rabdul06 on March 17, 2013, 01:00 AM

My originals look like they were drilled from inside the rim (obviously on an unbuilt wheel... :idiot2:) and then a larger drill was used to remove the burrs from the outside where the rim tape goes.

Looks like it was done by a blind monkey on crack though.....

Title: Re: what size is your hole ?
Post by: not johndub71 on March 17, 2013, 08:25 AM

Good point bendy. Now, wheres that skyway rim guy, he may have zytel creation on his hands.. in plastic.

Title: Re: what size is your hole ?
Post by: Peter J on March 17, 2013, 11:25 AM

 :daumenhoch:

http://www.radbmx.co.uk/forum/index.php'topic=132399.0