The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => Frame => Topic started by: Peter Gee on 21.09. 2018 20:16

Title: How many links needed for a 19/42 Sprocketed 59 A series?
Post by: Peter Gee on 21.09. 2018 20:16

A very useful chart here https://www.britbike.com/technical/bsa_chains.html gives a length of 96-102, not quite exact enough for my purposes.  dont want to be adding or subtracting links.

Everything is newly renovated.  How many links do I need?

Much appreciated.

Title: Re: How many links needed for a 19/42 Sprocketed 59 A series?
Post by: morris on 21.09. 2018 21:07

98 and a 1/2
If in doubt talk to the chain man http://www.the-chain-man.co.uk/
He knows everything about chains

Title: Re: How many links needed for a 19/42 Sprocketed 59 A series?
Post by: Black Sheep on 21.09. 2018 22:42

97 links according to my Bernal Osborne book.

Title: Re: How many links needed for a 19/42 Sprocketed 59 A series?
Post by: Peter Gee on 22.09. 2018 00:52

See, everyone *smile* has a different answer!

Title: Re: How many links needed for a 19/42 Sprocketed 59 A series?
Post by: duTch on 22.09. 2018 01:34

 It's easier to break links out than add 'em in

Title: Re: How many links needed for a 19/42 Sprocketed 59 A series?
Post by: JulianS on 22.09. 2018 08:58

98 solo and 97 sidecar gearing according to the BSA Data book for 1959.

Same figures from the Reynolds catalogue for 1959 (below)

Title: Re: How many links needed for a 19/42 Sprocketed 59 A series?
Post by: Slymo on 03.10. 2018 03:49

97 includes a half link as otherwise it has to have an even number. Just fitted a new Renolds primary chain to my machine after securing a small mortgage to pay for the bloody thing. 97 links is a perfect fit with the gearbox just a gnat's  forward of centre on the adjuster.

Title: Re: How many links needed for a 19/42 Sprocketed 59 A series?
Post by: Peter Gee on 08.10. 2018 20:49

Thanks guys I bought 97 after reading the threads and it's fitting well