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Technical & Reference Section => Tech and Restoration => Topic started by: Gashead on February 05, 2008, 06:39 PM

Title: Bottom Brackets
Post by: Gashead on February 05, 2008, 06:39 PM: whats the difference between 24tpi and 28 tpi - what does the tpi stand for ?
Title: Re: Bottom Brackets
Post by: HEYWOOD BMX on February 05, 2008, 06:46 PM: :) Threads per inch.
Title: Re: Bottom Brackets
Post by: Haro82 on February 05, 2008, 06:51 PM: Quote from: GASHEAD on February 05, 2008, 06:39 PM
whats the difference between 24tpi and 28 tpi - what does the tpi stand for ?

I know the 28tpi ones fit the threaded redline flight spindles and the old mongoose cranks. I presume the 24tpi and one piece cranks.
Title: Re: Bottom Brackets
Post by: Gashead on February 05, 2008, 07:00 PM: So 28 tpi for 3 p/c and 24 tpi for 1 p/c :daumenhoch:

However

http://cgi.ebay.com/Tioga-Beartrap-28tpi-Bottom-Bracket-NEW-IN-BOX_W0QQitemZ290198361526QQihZ019QQcategoryZ64644QQrdZ1QQssPageNameZWD1VQQtrksidZp1638.m118.l1247QQcmdZViewItem

or

http://cgi.ebay.com/Tioga-Beartrap-24tpi-Bottom-Bracket-NEW-IN-BOX_W0QQitemZ300196659904QQihZ020QQcategoryZ64644QQrdZ1QQssPageNameZWD1VQQtrksidZp1638.m118.l1247QQcmdZViewItem

say they are both for 1 p/c

So which bloody one :idiot2:
Title: Re: Bottom Brackets
Post by: sawzall on February 05, 2008, 07:38 PM: nick, mongoose 1 piece cranks have 28t as do redline flight cranks and standard 1 piece cranks are 24t
Title: Re: Bottom Brackets
Post by: Gashead on February 05, 2008, 08:47 PM: Got it :daumenhoch:

Not sure how some of my builds stay together half the time :LolLolLolLol:
Title: Re: Bottom Brackets
Post by: sawzall on February 06, 2008, 06:12 PM: ;D ;D ;D
Title: Re: Bottom Brackets
Post by: MartyC on February 06, 2008, 08:01 PM: Quote from: GASHEAD on February 05, 2008, 08:47 PM
Got it :daumenhoch:

Not sure how some of my builds stay together half the time :LolLolLolLol:

I'm starting to wonder that too, I know I won't be asking for a ride on any of your bikes :LolLolLolLol:
Title: Re: Bottom Brackets
Post by: pickle on February 06, 2008, 08:32 PM: Quote from: GASHEAD on February 05, 2008, 08:47 PM
Got it :daumenhoch:

Not sure how some of my builds stay together half the time :LolLolLolLol:

dust? ;)
Title: Re: Bottom Brackets
Post by: Gashead on February 06, 2008, 08:38 PM: Dust :LolLolLolLol:
Title: Re: Bottom Brackets
Post by: pickle on February 06, 2008, 08:40 PM: jesus! i just remembered i raced your (now mine) GT at MK last year! and i never tried any of the bolts! :shocked: :uglystupid2:
Title: Re: Bottom Brackets
Post by: Gashead on February 06, 2008, 08:52 PM: Check the crank mate - I put that in !

No wonder you came last - you were peddling backwards :LolLolLolLol: :LolLolLolLol: :LolLolLolLol:
Title: Re: Bottom Brackets
Post by: pickle on February 06, 2008, 08:54 PM: :LolLolLolLol: no that was Paul aerostylie with his tiny gearing! :LolLolLolLol: