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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  mongoose bottom bracket
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Author Topic: mongoose bottom bracket  (Read 1073 times)

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Offline skippyg

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mongoose bottom bracket
« on: April 07, 2014, 05:23 PM »
hi there,

   ive strip out my 87  mongoose decade ready for powderm,when I took the bottom bracket apart
on oneside it says mongoose and on the other side it has 28 stamped on it,does this mean it is
a 28tpi bottom bracket?

 my question is would it be easier to swap it for a 24tpi bottom bracket as it seems nearly all
cranks seem to be 24tpi and therefore will I can get a crank a lot easier

  many thanks for your help and opinions on this

 :daumenhoch:

Offline snoopy72

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Re: mongoose bottom bracket
« Reply #1 on: April 07, 2014, 05:26 PM »
As far as I know mongoose used 28tpi up to middle of 82 then 82 onwards changed to 24tpi.

Offline insectbones

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Re: mongoose bottom bracket
« Reply #2 on: April 07, 2014, 06:45 PM »
And yeah, you can swap to a 24tpi no problem  :daumenhoch:

Offline skippyg

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Re: mongoose bottom bracket
« Reply #3 on: April 08, 2014, 07:43 PM »
cheers guys,24 tpi it is then :daumenhoch:

Offline BMX1973

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Re: mongoose bottom bracket
« Reply #4 on: April 08, 2014, 08:03 PM »
On all the goose's I've had up to 85 all had 28tpi one piece cranks and bottom brackets.  :) Never had an 86 so cant comment on them.  :-\  By the sounds of it if yours is an 87 they were still using them then.  :)

24tpi cranks and bottom brackets are a lot easier to source.  :daumenhoch:
« Last Edit: April 08, 2014, 08:05 PM by BMX1973 »

Offline skippyg

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Re: mongoose bottom bracket
« Reply #5 on: April 08, 2014, 08:13 PM »
that's what I thought BMX1973,dont see many 28 tpi cranks for sale

 I think the bottom bracket and crankhas been replace with one from an earlier  mongoose
as the crank is only 165 and has mongoose on it(I think a mongoose motomag had them fitted)
and from the spec sheet for an 87 decade it should be a 175 sr crank :daumenhoch:

Offline insectbones

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Re: mongoose bottom bracket
« Reply #6 on: April 10, 2014, 07:56 AM »
that's what I thought BMX1973,dont see many 28 tpi cranks for sale

 I think the bottom bracket and crankhas been replace with one from an earlier  mongoose
as the crank is only 165 and has mongoose on it(I think a mongoose motomag had them fitted)
and from the spec sheet for an 87 decade it should be a 175 sr crank :daumenhoch:

I run a 165 on my motomag as i like a short crank on it. It was original to a minigoose  :daumenhoch:

Offline skippyg

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Re: mongoose bottom bracket
« Reply #7 on: April 10, 2014, 07:02 PM »
thanks insectbones :daumenhoch: ,so it does have the wrong crank on it? as im new to all this really

RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  mongoose bottom bracket
 

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