Print Page - 190mm front hub aluminium and cast iron brake drum

Title: 190mm front hub aluminium and cast iron brake drum
Post by: BARRYRGS on 22 Jan, 2020, 13:30

Does anybody know the size of the bearing retaining nuts I have two ready to insert along with new bearings etc but I need to run a tap down the threads first

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Title: Re: 190mm front hub aluminium and cast iron brake drum
Post by: mo goldie on 24 Jan, 2020, 22:20

Hi barry

I cant help you with that one....but just wanted to say it`s Great you have a 190mm hub as I am Jealous as I would love to have one on my RGS Rep.......good luck with the finding out for the Tap needed someone out there Knows.

Cheers M

Title: Re: 190mm front hub aluminium and cast iron brake drum
Post by: ChrisG on 25 Jan, 2020, 15:21

Hi Barry,
I don't know either except that most threads used at that time were BScycle. A nut of that size would probably have a 20TPI thread which is easily checked with a thread gauge.

Title: Re: 190mm front hub aluminium and cast iron brake drum
Post by: chaz on 25 Jan, 2020, 17:13

normally 26tpi for cycle apart from some of the larger threads
https://britishfasteners.com/threads/bsc.html

Title: Re: 190mm front hub aluminium and cast iron brake drum
Post by: ChrisG on 28 Jan, 2020, 10:16

Agreed but on the nut concerned could be 20TPI due to size.

Title: Re: 190mm front hub aluminium and cast iron brake drum
Post by: chaz on 28 Jan, 2020, 17:06

as I said , apart from the larger threads, which were 20tpi and looking at the chart I posted up to 1" were 26 tpi with an option I know of 20tpi, presumably giving the options such as UNF/UNC or BSF /BSW in applications that need one

Title: Re: 190mm front hub aluminium and cast iron brake drum
Post by: JulianS on 28 Jan, 2020, 17:56

Cycle thread from 7/16 inch came with both 20 tpi and 26 tpi.

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The BSA Workshop => Twins => Topic started by: BARRYRGS on 22 Jan, 2020, 13:30