Oddball engines and prototypes

[WilDun]

All those bike have great sounds, Myself I would love to hear the sound of the Moto Guzzi V8 being used in anger and in person.

Did hear a short sound tract of the Guzzi in the IOM TT and it sounded like a Commodore going down Conrod Straight at Bathurst. - apparently they had two configurations of the crankshaft which produced quite different exhaust sounds.

Going back to the V twin (Merlin) bike, I see they reckoned it was from a 1938 model which would cancel out the possibility of it being from either a Mosquito or a Mustang as at that time they would probably only have been used in a Mk 1 Spitfire or Hurricane.

BTW, I would like to see it on the TT cuircit especially at Governor's or the Ramsey hairpin - they would have to have had their guys stationed there with starters all charged up and ready to go!

[Kickaha]

Did hear a short sound tract of the Guzzi in the IOM TT and it sounded like a Commodore going down Conrod Straight at Bathurst. - apparently they had two configurations of the crankshaft which produced quite different exhaust sounds.

[Grumph]

Going back to the V twin (Merlin) bike, I see they reckoned it was from a 1938 model which would cancel out the possibility of it being from either a Mosquito or a Mustang as at that time they would probably only have been used in a Mk 1 Spitfire or Hurricane.

If it was a '38 Merlin that would account for the willingness to cut it up. The early Rolls built ones were pretty well hand built and nothing fitted any other Merlin...It was only when Packard redrew it with modern tolerances for automatic machinery that it could be made in the numbers needed.
I seem to remember Ray saying to me that the early ones were now just display items. If you want to fly one it has to be a Packard as all the spares being made are for that version.

[WilDun]

If it was a '38 Merlin that would account for the willingness to cut it up.
I seem to remember Ray saying to me that the early ones were now just display items. If you want to fly one it has to be a Packard as all the spares being made are for that version.

Yep I'd agree with that, I've heard it said that Rolls got the "correct" tolerances on the crank journals by old experienced guys hand lapping them - no fancy expensive grinding gear then! Fact is, the Mustangs, the Canadian (and Aussie Mozzies) were not manufactured before about 1942. and all used the Packard version (but correct me if I'm wrong). - Why the hell am I going on about it? it is what it is!

As for the Guzzi V8 in the video - sounded to me like it was using the single plane version of the crank, it didn't sound anything like the one I heard in the TT ( wish I could find that clip).

[Grumph]

Got sent this pic today by a Kawasaki mad friend...
Husa has posted pics and details of the trapezoidal four motor but I'd never seen a pic of the complete bike.
Probably would have sold well if the Z hadn't been on the market.

[husaberg]

Got sent this pic today by a Kawasaki mad friend...
Husa has posted pics and details of the trapezoidal four motor but I'd never seen a pic of the complete bike.
Probably would have sold well if the Z hadn't been on the market.

I have, but not in colour
http://www.kiwibiker.co.nz/forums/sh...post1130655734

found this just now though
MOre later

[husaberg]

some more

It's the trapezium four, factory code 602S (the KR750 triple was the 602). It was intended to be the successor to the triple. Neville Doyle built one bike for Greg Hansford, but although the bike was tested it was never raced. The collapse of F750 put an end to the project; the engines were sent back to Akashi and presumably destroyed. The frame, originally a KR750 frame that Neville modified to take the four, was reconverted to its original spec.
The engine had two crankshafts, and vibration was a problem; various crank phasings were tested but results unknown to me. The cylinders had reed intake valves (no power valves of course) and the gearbox six speeds. The engine had one lower crankcase half but two upper crankcase halves: one for the crankshafts and one for the gearbox, which could thus be opened without disturbing the crankshafts. This made changing ratios much easier.

According to the factory drawing of the cylinder the bore is 66 mm, which means the stroke is probably 54.4 mm, the same as that of the KR250, 350 and 500. Presumably conrods and big-end bearings are identical to those of the smaller KRs. There is one exhaust port with a width of 44 mm; four transfers fed from the crankcase; and two transfers fed from the intake similar to the TZ750's boost port. There's a 4 mm wide bridge in the intake port.
Unfortunately I have no drawings whatsoever of the engine's internals- piston, crankshafts, jackshafts, water pump parts, transmission bit and pieces etc etc, though the dry clutch was probably identical to that of the Triple and I think that most of the gearbox parts would have been taken from the Triple as well.

[Frits Overmars]

found this just now though. More later

Here's what I've got.

[Frits Overmars]

And six more.

[Mental Trousers]

A more common reason was told to me by Ray Mulqueen when we discussed Lucky Keizer's V twin...."it seemed like a good idea after a couple of beers"...

That's most often heard in hospital emergency rooms.

[husaberg]

Here's what I've got

A few are the same, but you had some nice ones. the rest are all here now
It looks like Gerit has drawings of the cylinders if not more
http://www.kiwibiker.co.nz/forums/al...p?albumid=5045
I only had a 3 minute 2 search criteria google

[ken seeber]

Here's a goodie with some nice pics and detailed history:
http://www.odd-bike.com/2014/02/dkw-...force-fed.html
Go to archives for a range of bikes to look at.

[WilDun]

Here's a goodie with some nice pics and detailed history:
http://www.odd-bike.com/2014/02/dkw-...force-fed.html
Go to archives for a range of bikes to look at.

Ken, DKW is interesting and there sure is a lot of other very interesting stuff to be found in that site as well! (archives).

Update - I also saw (in the archives) a good article on the Bimota V-Due, it seems that some people have actually got them singing properly now, but all too late I guess, a great blow to Bimota and to the two stroke effort in general!

BTW, I haven't heard much about the Suter since it's disastrous TT outing! - hope it was just a hiccup on the way to success for two strokes!

[WilDun]

I said on the ESE Thread that I would post this link on the CITS engine here :-
http://citsengine.com.au/an-overview...ne-technology/

[Hemi Makutu]

Need to put this donk in a new CANAM sports-bike chassis eh, fellas..

http://www.amsnow.com/how-to-tech/20...oo-inside-look

Fe ring lands & electrofusion bore coating, plus aux 'power-jet' injection, & pretty flash electronic 'power valve', too..