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Motorcycle Discussions => British Bikes => Topic started by: wetdog on January 06, 2013, 02:23:24 PM

Title: triumph twin cranks
Post by: wetdog on January 06, 2013, 02:23:24 PM

when did triumph do a twin with a alternater and a bolt up crank which model and year would be good , im sure the crank is pre unit but ive not seen a bolt up alt before , thanks

Title: Re: triumph twin cranks
Post by: L.A.B. on January 06, 2013, 07:36:34 PM

Triumph TRW?

Title: Re: triumph twin cranks
Post by: wetdog on January 06, 2013, 08:09:19 PM

maybe i will look into that thanks , would you know how i could ident this as a trw crank there is cast on both halfs E3296 if that helps and big end jornals are 1and 5/8 . rods are the alloy type with shells ...............no just had a look and shows trw rods as one piece which these are not ...any other ideas ?

Title: Re: triumph twin cranks
Post by: R on January 07, 2013, 11:14:12 AM

A quick google of that number turns up mention of a mid-1950s T110 crank.

Title: Re: triumph twin cranks
Post by: L.A.B. on January 07, 2013, 04:07:43 PM

Quote from: R on January 07, 2013, 11:14:12 AM

A quick google of that number turns up mention of a mid-1950s T110 crank.

I don't think any T110 model had an alternator, however the 5T and 6T models did (from 1954) when the cranks were still the bolt-up type. According to the 1954 parts book the T110 and 6T had the same crankshaft assembly: E3295

Title: Re: triumph twin cranks
Post by: wetdog on January 07, 2013, 06:16:32 PM

would you happen to know . did they have the 1and 5/8 big ends thanks

Title: Re: triumph twin cranks
Post by: L.A.B. on January 07, 2013, 06:46:54 PM

Quote from: wetdog on January 07, 2013, 06:16:32 PM

would you happen to know . did they have the 1and 5/8 big ends thanks

Yes, according to the Sept '54 edition 99-0837 workshop manual, the crank big end journals were 1.6235" - 1.6240 (1-5/8 = 1.6250")

Title: Re: triumph twin cranks
Post by: wetdog on January 08, 2013, 09:08:09 AM

thankyou