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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  Gen 2 Profile Spider
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Author Topic: Gen 2 Profile Spider  (Read 950 times)

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Offline Bigplinky

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Gen 2 Profile Spider
« on: August 07, 2007, 10:46 AM »
Got a spider for my gen 2 profile box cranks the other week but was a bit surprised by the diameter of the hole in the centre. I was expecting it to be 19mm so it went straight on the spindle but it measures 22.5mm(ish) now this is too small to fit on a 1 piece crank (23.6mm) so my question is when you bought these cranks new did you have to shim the spider or did you get a 19mm one (and if so what's my one off?).

It's not going to cause me any problems I was just interested.

Cheers

Andy

Pic of spider here

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=120135682134&ssPageName=STRK:MEWN:IT&ih=002
Why oh why do I still buy kids bikes!

Offline diesel

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Re: Gen 2 Profile Spider
« Reply #1 on: August 07, 2007, 11:17 AM »
Profile never made one piece cranks. The shim that you can buy from any profile dealer has two functions:

a) The first is to narrow the diameter down to fit your spindle.

b) The second is that 'top hat' shape of this shim sits neatly onto the inner bearing case, thus working as a spacer between the spider and the bearing so that it dosen't foul up.

hope that helps

Offline Bigplinky

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Re: Gen 2 Profile Spider
« Reply #2 on: August 07, 2007, 04:22 PM »
Question answered, top man Dan cheers  :daumenhoch:.

Funmonsters got this for sale at the moment which was confusing me

http://cgi.ebay.co.uk/SUPER-RARE-OLDSCHOOL-PROFILE-BOX-ERA-OPC-BMX-SPIDER_W0QQitemZ320141362094QQihZ011QQcategoryZ33503QQrdZ1QQssPageNameZWD1VQQcmdZViewItem

Why oh why do I still buy kids bikes!

Offline diesel

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Re: Gen 2 Profile Spider
« Reply #3 on: August 07, 2007, 04:37 PM »
Well I could be proven wrong, but I've owned a few and they have all been the same internal diameter - and all requiring a profile shim to fit 'neat and snug'.

Offline Mattdub

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Re: Gen 2 Profile Spider
« Reply #4 on: August 07, 2007, 04:40 PM »
This ad shows OPC spiders  ;)



Courtesy of Andy Funmonster  :daumenhoch:

Offline diesel

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Re: Gen 2 Profile Spider
« Reply #5 on: August 07, 2007, 05:09 PM »
Fair enough if thats the name for a profile spider - "1 piece crank spider"

Then I stand corrected, my appologies

They are indeed for one piece cranks so you just need the shim to convert them to three piece cranks?

Does someone here have a Profile three piece crank spider - that does 'not' require a shim? Or are all Profile spiders "1 piece crank spiders"?

Offline Mattdub

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Re: Gen 2 Profile Spider
« Reply #6 on: August 07, 2007, 05:56 PM »
Hey Dan  ;) ,

Andy sent me that ad recently when we were talking about these , he said he had 2 with different size holes ? .

Did the 3 piece ones only come in silver maybe , the OPC ones in colours ? . Did the 3 piece ones only come with a crank set ? , TBH I don't know much about these because I ran the same pair of 401's ( with a replaced arm once due to Cocksmoor triples ! ) for about 3+ years after going from OPC .

I don't remember that ad from bitd .

Good weekend ?  ;)
« Last Edit: August 07, 2007, 06:00 PM by Mattdub »

Offline Bigplinky

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Re: Gen 2 Profile Spider
« Reply #7 on: August 07, 2007, 06:25 PM »
Alans sells both shims 23.6 (1 PC spider) and 22.0 (3 PC spider) I think I'm going to get a 23.6 and machine it to a tight fit as I'm a bit anal like that.

« Last Edit: August 07, 2007, 06:29 PM by Bigplinky »
Why oh why do I still buy kids bikes!

Offline diesel

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Re: Gen 2 Profile Spider
« Reply #8 on: August 07, 2007, 07:58 PM »
 :daumenhoch:

steve

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Re: Gen 2 Profile Spider
« Reply #9 on: August 07, 2007, 08:26 PM »
talking of being anal...
-whats wrong with jamming a pair of tapered pliers into your ring, then reaming it out?
 :LolLolLolLol:

Offline HUTCHMAN

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Re: Gen 2 Profile Spider
« Reply #10 on: August 07, 2007, 10:24 PM »
i have two profile spiders,both have different i.d's but both are larger than the profile 2nd gen spindle!

Offline Bigplinky

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Re: Gen 2 Profile Spider
« Reply #11 on: August 07, 2007, 10:28 PM »
Looks like the answer to my original question is that you always have to shim the spiders, unless somebody knows different.

Cheers for the info lads

Steve  your a strange person
Why oh why do I still buy kids bikes!

steve

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Re: Gen 2 Profile Spider
« Reply #12 on: August 07, 2007, 10:50 PM »
IT WORKS A TREAT, I DONE IT LAST WEEK

i had a spider that was from a one piece crank

and the top hats from both size -whatever they are to 19mm spindle

-the small one was too small , the large too large

-I simply enlarged the spider to take the larger top hat washer to 19mm

-with a pair of tapered pliers as a reamer

-very true! -plus you can get it really tight :LolLolLolLol:

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