Are they correct?

[Sidcar]

Anyone talking about sidecars is more than welcome on any thread of mine.
I've checked my frame number the pre-fix is definitely FA7 and the engine DA10.

Sid

An Avon would would be more suitable for my A10, this Squire looks a shade to modern.

[Rocket Racer]

Re:- B33 Plunger Models.

I know that we're deviating from the thread but I think that this is worth mentioning.

Because the B31 and B33 plungers didn't have a full looped/cradle frame (it stopped at the front of the engine and started again at the back of the gearbox) BSA suggested that these models were unsuitable for sidecar work as the engine and gearbox would take too much stress and strain.  Hence...no sidecar lugs on the B series frame.  So in order to satisfy customer needs for an overhead valve single cylinder sidecar hauler the company put the B33 engine into an M series frame and called it the M33.

BSA actually advertised the M33 as being for the "Sporting Sidecarist".

Beezageezauk.

Nothing wrong with the plunger B33 for side car work apart from the plungers and forks, both of which struggle with the side loads. Funnily enough the M and A plunger frames have the same limitations.
Yes I know my bike wasnt sold specifically for sidecar use (neither were the early swing arm frames), but its done so for a lot of its life and missing a small amount of bottom frame rail makes no real difference. That and as its been in my shed for over 25 years isnt going to have a frame swap or be flogged off. Just needs less trail, the curse of all solo's when hitched up.
Sidecars

[LJ.]

Probably no problem as you say RR, the main thing is being aware of limitations. I put girder forks on my 49 A7 which is wrong I know but... they look good and they seem to handle nicely, gives that much more vintage look and feel. Someone mentioned to me that I stand to wreck the forks with using a sidecar especially if poorly set up and heavily loaded, so with that in mind I grease up the links more often and take extra care while riding. Any chance of a picture of your Avon car?

[Rocket Racer]

Probably no problem as you say RR, the main thing is being aware of limitations. I put girder forks on my 49 A7 which is wrong I know but... they look good and they seem to handle nicely, gives that much more vintage look and feel. Someone mentioned to me that I stand to wreck the forks with using a sidecar especially if poorly set up and heavily loaded, so with that in mind I grease up the links more often and take extra care while riding. Any chance of a picture of your Avon car?

Nothing fancy as yet, still a work in progress, has a BSA hub centre, but missing the boot handle.
I know what you mean about girder rigids being pretty. A lot of prewar bikes pulled heavy chairs and had girders. The only issue would be that typically the frames may run slightly different rake angles. A lot of people dont really understand chairs, I must see if I can find a picture I've got showing a rig racing that has impressive fork flex!

please forgive the mess in the shed

Lets see a pic of the girder 47 please! wink2

[LJ.]

No such thing as an 'untidy' shed! Only the wives & girlfriends think that. (wags?)  

There are some photos of the girder A7 somewhere here, just had a look and realised just how large the data is getting now. Here's a few from my photobucket...

Just need to click the pic to enlarge it







Your right about people not really understanding sidecars I find it a continuous learning curve. Looks like your chair is the Avon deluxe type as it has the very useful boot lid and I believe yours might be just slightly longer.

[Beezageezauk]

Lawrence,

Here is a picture of my 1963 Watsonian Avon Sport sidecar.  It uses the later chassis but the body is the same as Rocket Racer's.  Apologies for the picture being small but I can't increase the size without it going out of focus.  It's also the only picture I have of that side of the outfit.





It's hauled by a mock M33....An M21 with B33 engine fitted.

Beezageezauk.

[iansoady]

I'm surprised BSA didn't offer sidecar yokes as so many A10s were used to lug great big double adults around.

My first bike was a Norton 16H with a Watsonian Avon like BeezaGeeza's. It handled really strangely when I took the chair off as it had sidecar yokes and I didn't know about them.

[Sidcar]

Nice looking outfit. Certainly plenty of legroom in an Avon.
My BSA Sloper has sidecar links in its girder forks. I did ride it solo for a short period but the handling was a bit iffy.

Sid