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Re: Rev/Counters Modern??
Posted: Tue Apr 20, 2021 10:25 am
by 39speedtwin
Owen I sent you a PM regards Dudley
Re: Rev/Counters Modern??
Posted: Wed Apr 21, 2021 10:31 am
by JEAN-NOEL
Hello Owen,
I have got the suitable gear box from GAGG &SON.
But you have also to find :
024490 oïl distributor
030436 housing
023106 washer for cap
018958 oïl seal (Steve Surbey have the original one)
018990 flange for gear box.
The cable went from Norvil (as it is the same for 650 SS, ATLAS et c)
Good luck !
Re: Rev/Counters Modern??
Posted: Wed Apr 21, 2021 12:50 pm
by mdt-son
The original tacho drive gearbox for 1964 was NM24563 (BG 1508-05), also shared by the G15 and Norton 650/750 line of bikes. The gearbox is a reversing 1:1 gearbox. Considering the gear ratio, it needs to be mated to a 2:1 tachometer magneto head.
As the wire and and tacho gearbox are prone to wear at this rotational speed, fitment of a 2:1 reversing tacho gearbox (BG 1508-06) as used for the Norton Commando is suggested. It willl require a 4:1 tachometer magneto head to be used.
These tacho gearboxes can be found with Andover Norton or RGM.
-Knut S.
Re: Rev/Counters Modern??
Posted: Wed Apr 21, 2021 1:01 pm
by mdt-son
FYI, A. Gagg & Sons has a new proprietor since 2020. The new business changed the name into Timeless Motorcycles, Ltd.
Byron Industrial Estate, Unit C21a, Brookfield Rd, Arnold NG5 7ER, UK
Tel.: +44 115 978 6288
https://www.pressreader.com/uk/old-bike ... 0948011130
-Knut