The BSA A7-A10 Forum

Technical (Descriptive Topic Titles - Stay on Topic) => Frame => Topic started by: Topdad on 10.04. 2013 10:22

Title: offset for a '63 RGS rear wheel ?
Post by: Topdad on 10.04. 2013 10:22

Good morning , had an enquiry from a guy who as a 63 RGS and as had a rear wheel rebuilt and now appears not to line up fit correctly between the rear s/wing arm. He thought it nshould have an offset of 7.5mm toward the drive side whereas it's come back without any ofset any one know what is the correct setup ?  His info, also is a layford drum/sprocket 42-60846T a correct drum , many thanks for anyones help, best wishes BobH

Title: Re: offset for a '63 RGS rear wheel ?
Post by: bsa-bill on 10.04. 2013 10:37

Provided it doesn't rub the S/A, I'd be more concerned that it lined up with the front wheel first.

 not being an expert on RGS (there's not as many as there appears to be  *smiley4*) but is the S/A a RGS S/A , am I right to think there is a difference

Title: Re: offset for a '63 RGS rear wheel ?
Post by: Topdad on 10.04. 2013 11:26

Hi Bill ,thanks for your input , I really can't say, this chap e-mailed me out of the blue asking for help so obviously know someone here will be able to answer his question, so I'll sit and wait for the collective ideas re this. best wishes Bobh

Title: Re: offset for a '63 RGS rear wheel ?
Post by: magicflem on 11.04. 2013 00:43

Hi all.....
I am the guy with the RGS rear wheel offset query.

I have been told the correct "offset" for a WM2 Alloy valanced 19" rear BSA RGS rim is a flush straightedge across the crinkle edge to the outer lip of the rim. This measurement is taken on the spline (drive) side.

Can anyone confirm this as being correct?

Regards,

Kim 

Title: Re: offset for a '63 RGS rear wheel ?
Post by: bsa-bill on 11.04. 2013 10:29

Hi Kim - sorry RGS are out of my wallet and experience but got to be someone here who knows                     

Title: Re: offset for a '63 RGS rear wheel ?
Post by: chaterlea25 on 11.04. 2013 21:25

Hi Kim,
Phone John at SRM or the guys at Brickwood wheels and the will immedietly tell you
The wheel should be central to the frame backbole and ignore the distances betweek the shocke or anything else

HTH
John

Title: Re: offset for a '63 RGS rear wheel ?
Post by: petetherev on 29.05. 2015 15:41

Hello, I know that I am 2 years behind but I have just built my rear wheel and CAN confirm that the offset for the QD (Crinkle) hub building on a WM2 19" Steel rim is as Magicflem says in an earlier post above. This is with regard to a 1954 350 Gold Star.

Regards
Pete

Title: Re: offset for a '63 RGS rear wheel ?
Post by: Norsa1 on 14.06. 2015 13:57

The back wheel must be central to the frame. Suggest you set up a laser running down the frame with the rear fender off. The location of the rear wheel is accurately located in this method