Hi.

I'm considering putting a 29 tooth primary drive sprocket on an A65 that I'm building. All my current info is for 28 teeth.

So whilst I understand the gearing affect. will be a problem with the primary chain. I can only find A65 info for an 80link chain

 (which I imagine will be too tight) or an 82 link.

So if I use the 82 will I have enough adjustment. Your advice please.

Incidently the reason for this is quite simple----I already have a 29T sprocket.

Don't know what it came off?

Mike

Hi

I have seen listed some 7:1 pistons and as I need a set of pistons I am giving this some thought. Mainly because it should be easier to kick it over.(If I ever get to trying it again)

What were they in originally??

What sort of effect would they have. Radically underpowered or only a little??

Mike

 
Good morning. I am rebuilding an A65 engine to Thunderbolt spec. I have a camshaft No 68-0473 which I am lead to believe is high lift???. Out of a Spitfire or something of that ilk.(According to Draganfly,-----I don't know) If I remember rightly the correct one is 67-356??

I know the dear old Thunderbolt with standard pistons etc doesn't need that amount of breath, so what will be the probable effect if I use it
I suspect very little but I would be interested in your thoughts.

Mike

 
Will the "drive end" of an A50/A65 fit and work with the "pump end" of the earlier A7/10 B31/32 etc. It would appear that they should go together OK but your advice would be very welcome.

Mike

 

Just thought I would waste every body's time, with a quick hint.

Freeing stuck valves and heads so you don't need a hammer.

Tools req:- Plug spanner and about 4' of about 5/16th diameter non hairy nylon cord.

Method:- remove plug/s, rock bike in gear until the piston/s are about halfway up on compression stroke, feed the cord into the bore (keep at least 1 foot in hand) now rock the bike forward and the bunch of rope will either A. push your valve back into place, or B. will push head off depending which you are trying to do. You will probably still have to locate your pushrod unless you are seriously lucky.

Does it work:-  Yep never failed for me and that includes extreme use on a Cessna aircraft engine and pushing the rusted head off an ancient Fordson Major tractor.

Mike

 
Some help please gents. I have been asked these questions and I'm completely out of my depth here.

Question 1. Does the Sloper and the Blue Star use the same pistons.

Question 2. Was the Sloper ever produced as a 550cc or indeed anything other the 500cc.

Thanks

Mike

Hi

My M20 forks have been damaged and re-buggered  at some stage in its obviously eventful passage through the ages.
I am shortly going to start the rebuild(actually they need to be re-made).

So were they originally welded or brazed. There is so much brass around the joints that it almost qualifies as HGV.

At this stage I am assuming brass but open to info from those with a greater knowledge.

Mike

 

Greetings . There is a 1931?? Sloper De Luxe for sale on Ebay.

Within my totally limited knowledge and experience it appears to be relatively up together, by that its obviously somewhat incomplete.

The asking is £5500. (they spurned my offer of £4000???)

Seriously any thoughts on this would be really appreciated. So what do you reckon.

Mike