Ian, They did sell them in Canada, but they're quite scarce. Haven't seen one in a number of years. I have a friend in the motorcycle salvage net, I'll have...
Pete Snell
snell-p@...
May 1, 2008 3:41 pm
14521
... That would be appreciated Pete. Cheers IAN See www.drysdalev8.com for : - Drysdale 750-V8 Sports & 1000-V8 Cruiser - DRYVTECH 2x2x2 Experimental -...
Ian
iwd@...
May 1, 2008 3:45 pm
14522
A couple of years back somebody showed me a non-English-language magazine (German, if I'm not wrong) article on a really beautiful conversion with a DR800...
My last post hasn't appeared yet so I'll mention it again: Check out Aus ebay 300223116275 Note also the 750 barrel by the same seller. Happy hunting, Cheers, ...
... Thanx !! Wasn't there 2 days ago when I checked, or maybe I only checked for DR800 ? The 800's are like rocking horse poo, so the 750 will do. Cheers...
Ian
iwd@...
May 10, 2008 5:10 am
14525
Hi Forum, Hoping I can get some advice on which is the better crank assembly to use for road racing. I have just acquired a Jawa 2 valve speedway motor with...
mc-engineRob, My ESO (actual genuine 1962 model) competes in Australian historic road racing. I originally built it up in the early 1980s and it has been...
WOW ! Thanks Greg, The motor is an 890 with flat followers. I am told it has the 897 long stroke crank with a brand new GM rod and big end. I assume that means...
... Don't you mean the other way around ? The tightly wound bit should be at the "static" end, so as you say, there is less mass to accelerate. Cheers...
Ian
iwd@...
May 12, 2008 6:45 am
14529
Hi Ian, That sounds reasonable. The tightly wound end will quickly become coil-bound as a heavy lump. Better to have that stationary against the head I guess...
... Greg, While the long rod change definitely does help, especially in a restricted engine, you also unshrouded the valves quite a bit. This can be a huge...
Rob, What is the engine number? If it is an early-ish (pre 70s?) engine it will have tiny ESO symbols either side of the number, they were all made in the ESO...
Yes I agree. It is really hard trying to work out how it did what it did. I used excel to make up charts and graphs of piston position and work out areas under...
Hi Greg, No ESO markings. I do have a 1966 motor - condition unknown. STEPPED CRANKPINS Original Matchless competition short stroke singles used a tough ...
That would be the first 66 engine without tiny ESO symbols either side of the engine number that I've heard of. Both my 68 engines have it, as do the 62s and...
Hi Greg, Sorry for the typo ... I also have a motor with the little ESO marks and a /1966 markings. Haven't surveyed it yet as I got a good running motor from...
... I don't use a long stroke, in fact it is shorter than the shortest ESO/Jawa stroke. The main message I was trying to get across was that I have a large or...
... Speaking of which, does anyone know the conrod CD for a Honda XR650R ( the water cooled one ). Cheers IAN See www.drysdalev8.com for : - Drysdale...
Ian
iwd@...
May 16, 2008 12:34 am
14538
According to my Carrillo catalog the 00-06 XR650R rod is 5.524in or 140.30mm center to center. John Mead...
... Thanks John, must get a Carillo catalogue one of these days. Cheers IAN See www.drysdalev8.com for : - Drysdale 750-V8 Sports & 1000-V8 Cruiser -...
Ian
iwd@...
May 16, 2008 1:46 am
14540
Ian, You can download a PDF version from here: http://www.carrilloind.com/downloads/tabid/112/Default.aspx It is the first item in the list. John Mead...
Hi Greg, I guess with limited valves & porting the short stroke should be better. For a given revs, the piston in a long stroke has travelled much further so...
... It depends on how you define torque, "measurable" torque is not dependant on the stroke, only on the engines capacity and to a lesser degree, the rod /...
Ian
iwd@...
May 18, 2008 2:19 am
14543
... The customer had a "big bore" version of the same motor, it was 85 x 180mm. When they were raced, they went really wild and bored them out to 90mm,...
Ian
iwd@...
May 18, 2008 2:57 am
14544
Know what you mean, force = pressure x area Work done = force x stroke Also old "long stroke" motors traditionally had small bore carburettors for optimum...
The weekly rag (motorcycle news) has a photo and story about a Belgian special. Take one Ducati 100DS. Turn the rear cylinder into an air pump that pushes air...
All my thermodynamics books are relegated to the shed these days. But I seem to remember that thermodynamic efficiency followed the natural logarithm of the...
... Just curious, what does the piston look like? I'm envisioning a pin to crown height about equal to the stroke. A related question, are steel pistons being...
Hi Charlie, ... AFAIK only in some Diesel-series-engienes, and some in pump-gas prototypes. They use very thin forged and machined maraging-steels mostly. ...
... Yep, really LONG cast iron pistons with 5:1 compression ration. We upped the CR a bit and used alloy pistons, similar in length to the originals. (...
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