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Technical & Reference Section => Tech and Restoration => Topic started by: Dannywhac on August 26, 2011, 03:35 PM

Title: TPI On Profile Racing Cranks
Post by: Dannywhac on August 26, 2011, 03:35 PM
Hi all - anyone know the TPI for Profile Racing cranks - got an axle that the threads are a little bit damaged (fixable though without drilling larger) and need to get a tap to do the job - ta in advance  :daumenhoch:
Title: Re: TPI On Profile Racing Cranks
Post by: kuwahero on August 26, 2011, 03:40 PM
They are 3/8 X 24 UNF have done this myself in the past :daumenhoch:
Title: Re: TPI On Profile Racing Cranks
Post by: Dannywhac on August 26, 2011, 03:47 PM
They are 3/8 X 24 UNF have done this myself in the past :daumenhoch:

Cheers fella  :4_17_5:
Title: Re: TPI On Profile Racing Cranks
Post by: Peter J on August 26, 2011, 03:50 PM
Buy

This:

http://www.ebay.co.uk/itm/GOLIATH-3-8-24-UNF-THREAD-TAP-SET-/170687414456?pt=LH_DefaultDomain_3&hash=item27bdc340b8

and this:

http://www.ebay.co.uk/itm/M3-M12-TAP-WRENCH-HOLDER-USE-TAPS-3-12MM-/280727432112?pt=UK_Home_Garden_PowerTools_SM&hash=item415ca8abb0

Job done  :daumenhoch:
Title: Re: TPI On Profile Racing Cranks
Post by: kuwahero on August 26, 2011, 03:53 PM
I still have tap set from when I did mine if you want me to try fixing it. :daumenhoch:
Title: Re: TPI On Profile Racing Cranks
Post by: Dannywhac on August 26, 2011, 03:56 PM
I still have tap set from when I did mine if you want me to try fixing it. :daumenhoch:

Cheers fella - just need the tap as I've got another axle needs doing, so might as well buy the tap  :daumenhoch:
Title: Re: TPI On Profile Racing Cranks
Post by: john4130 on August 26, 2011, 05:06 PM
i thought the profile axle was a 3/8" 26tpi. i remember snapping a bolt years ago and using a piece of a wheel axle with a nut on it to replace it. suppose it could have been a 24 tpi axle tho. they were the same thread as the old g sport hub bolts too.
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