The BSA A7-A10 Forum

Bikes, Pictures, Stories & more => Wanted & For Sale => Topic started by: CheeserBeezer on 18.12. 2022 14:53

Title: CA10R crankcases
Post by: CheeserBeezer on 18.12. 2022 14:53
Hi folks. Just wondering if anybody has a pair of CA10R cases, in decent condition, they'd like to sell please?
Title: Re: CA10R crankcases
Post by: muskrat on 18.12. 2022 19:13
G'day CB.
There's a set on fleabay in the states that need repair. Not a bad price. https://tinyurl.com/2p8es9ry
The # may be suss.
Cheers
Title: Re: CA10R crankcases
Post by: CheeserBeezer on 18.12. 2022 22:03
G'day CB.
There's a set on fleabay in the states that need repair. Not a bad price. https://tinyurl.com/2p8es9ry
The # may be suss.
Cheers
Thanks but shipping costs would be prohibitive. Keen but not desperate! Thanks again
Title: Re: CA10R crankcases
Post by: muskrat on 18.12. 2022 22:46
G'day CB.
Yes shipping from the US is over the top. I was looking at a set but shipping was over twice the cost of the item. Shipping from UK to AU is twice the distance but half the cost.
Good luck with your search.
Cheers
Title: Re: CA10R crankcases
Post by: Rex on 19.12. 2022 11:28
I wouldn't buy those cases in the pic anyway, as the numbers are iffy..
Title: Re: CA10R crankcases
Post by: spanersc on 19.12. 2022 17:34
Hi Andrew.
I've sent you personal message regarding the crankcases.
Title: Re: CA10R crankcases
Post by: trevinoz on 19.12. 2022 20:34
Just curious, Rex, why do you think those numbers are iffy?
Title: Re: CA10R crankcases
Post by: muskrat on 19.12. 2022 22:30
G'day Trev.
My records don't show a 1957 CA10R having the extra R.  https://www.britbike.com/technical/bsa_serial_numbers.html
A10R ROAD ROCKET SWINGING ARM    CA10R    3711
Cheers
Title: Re: CA10R crankcases
Post by: Black Sheep on 20.12. 2022 06:53
Also the RR is a different font and clearly squeezed into the space. Tsk tsk.
Title: Re: CA10R crankcases
Post by: JulianS on 20.12. 2022 09:02
CA10RR and HHC usually seen on USA market Road Rockets.
Title: Re: CA10R crankcases
Post by: Rex on 20.12. 2022 09:10
Just curious, Rex, why do you think those numbers are iffy?

The BSA number stampers weren't always the neatest, (but then I don't suppose they'd anticipated in their wildest dreams that 60 years on people from all over the World would be discussing the importance of their work!) but this is particularly bad, and it appears to show over-stamping too.
The various digit's fonts don't appear the same to me either.
Title: Re: CA10R crankcases
Post by: tomkilde on 20.12. 2022 14:48
FWIW the serial numbers on my 1961 Super Rocket are a good example of what tampering looks like.   The BSAOC identified several inconsistencies and declined to issue a dating certificate.
Title: Re: CA10R crankcases
Post by: CheeserBeezer on 20.12. 2022 15:05
FWIW the serial numbers on my 1961 Super Rocket are a good example of what tampering looks like.   The BSAOC identified several inconsistencies and declined to issue a dating certificate.
What a mess!
Title: Re: CA10R crankcases
Post by: trevinoz on 20.12. 2022 20:50
Musky, those records don't show any Road Rocket with 'RR' numbers.
We all know that the Road Rocket had "RR" and the Super Rocket had "R" but most of these lists don't show that.
At least I think that we all know this.
Title: Re: CA10R crankcases
Post by: KiwiGF on 20.12. 2022 21:05
FWIW the serial numbers on my 1961 Super Rocket are a good example of what tampering looks like.   The BSAOC identified several inconsistencies and declined to issue a dating certificate.

I believe this ‘56 Engine stamping (see pic below) is a correct example (and has been dated by the uk club) but who knows for certain eh. I have a couple of other spare CA10 cases with the same font. Some cases I have seen are relatively lightly stamped which can make the font tricky to recognise.

We should probably have a “sticky” thread on A10 engine and frame number validation.

PS I don’t worry about “revealing” numbers, its in plain sight on the bike!

PPS common “issues” with fonts on dodgy stampings are:
a “1” which is a plain vertical line (so it can be used as a letter and number so making the stamp set cheaper)

a “foot” on a number or letter where their should not be one (I am fairly sure a “1” should not have a “foot” but should have a “head”.

a “3” that is all curves but should have a straight section in the top half

A “7” that is all straight but should have a curved semi-vertical section

I’m sure there are other tell tale signs of dodgy stamps….on some years (maybe A10?) have slightly different heights for letters compared to numbers.