Hi All

[chooch]

you may have noticed I recently had a wanted add on the forum anyway I have purchased a 57 gold flash from fairly local to me ,really pleased ,its not completely original ,but runs and sounds great ,need a front tyre before i ride it as its cracked,will add a picture when I can ,just showing it some polish and looking into history at moment ,its old log book from 1976 shows it to have the engine it has now which is CA10RR36.. with HHC stamped underneath so the plot thickens !,anyway better get back to it !,cheers Tony

[Greybeard]

Looks decent. Did we mention 'Sludge Trap' to you already?

[chooch]

Have read about it whilst doing some research on here ,I dont know whats been done and what has not ,its changed hands a few times since restoration some years ago ,I do have the address of the last owner plus one so I am going to write to him,but at present the oil return looks good and clean  and doesnt wet sump or dribble so I dont plan to split her open at the moment,but as ever as a novice any advice is gratefully received

[Greybeard]

If you are sure the crankshaft sludge trap, (this is not the sump gauze or the oil tank gauze. They should be clean as well.) has been cleaned out in the last few years then ok but if you are not sure....

[Klaus]

Gread looking bike

Enginenumbers with the prefix CA had small journal cranks and no sludge traps.
But be sure that the crank is clean inside, if you dont know the history of the engine.
Do you know the last run?

cheers Klaus

[chooch]

Hi Its seen occasional use in the last year but before that not known,it has been restored at some point but history unknown as yet

[trevinoz]

Klaus, that is not completely correct regarding the crankshafts in CA10 engines.
The CA10RR engine from 1956 should have the large journal heavy crankshaft.

[Rocket Racer]

Klaus, that is not completely correct regarding the crankshafts in CA10 engines.
The CA10RR engine from 1956 should have the large journal heavy crankshaft.

Both the SJ and the lovely heavy transitional LJ cranks fitted to the '56 on road rockets have sludge traps.(attachment is transitional crank)

I'm not a huge fan of work for works sake, and while a sludge trap clean for an unknown quantity is always a good idea, running it on a low detergent monograde should leave the sludge where it is until you decide to tackle it.

Did I spot a thick flange barrel?