Concept "motorcycle" http://www.autoblog.com/photos/ferrari-motorbike-concept-1/1053520 This was around as someone design play ? Gorgeous engine, I want...
RohanB
newboltz333@...
Oct 3, 2008 11:44 pm
15031
RohanB <newboltz333@...> Sat, 4 Oct 2008 09:44:16 ... Seems to be a distinct lack of airbox or gearbox. And of course, zero wind protection on the...
The new R1 has a 2 plane crank. As far as I can tell it's configured as an inner pair and outer pair of 180 deg twins 90 deg out of phase. So the crank is...
I just read that the guy who rendered this has been approached by Ferrari, who don't want their name associated with the concept, and has been told to remove...
... I'd guess it'll need whatever help it can get down low. For some reason the new motor is even more oversquare than the old one, and the old one was no...
Julian, As far as I know, the old R1 does not take advantage of even exhaust pulses either, as the tri-Y pairs cylinders 1&2 and 3&4 (instead of 1&4 and 2&3). ...
which series did yamaha try that a while back and was told no way?,not homolgated . WSB,BSB, i doubt AMA,but i can't recall which series ... From: Julian Bond...
Virgin Yamaha built a big bang motor in BSB. But it was a conventional crank with an unconventional firing order. They're allowed to change cams, with in...
... All the modern 4 cyl 1000cc engines are relatively long stroke, they have been pushing the MPS limit to the ragged edge for a while now. Early R1's...
Ian
iwd@...
Oct 5, 2008 12:49 pm
15040
... I find this interesting, I know guys who have built and dyno-ed 4 into 1 systems for R1's and they just don't work. Good peak power but no spread, the...
Ian
iwd@...
Oct 5, 2008 12:56 pm
15041
I've started looking at the different ignition options for a C15, 250cc 4 stroke single. My intention is to use it for trials. By coincidence, I was looking...
This is a typical two stroke ignition curve where the timing is pulled back at high rpm to avoid detonation and seizure. Your four stroke will run but not...
... What does the 250 Beezer rev to though ? The curve is only backed off a couple of degrees at 6krpm, not ideal but it would run OK up to 6k I would think. ...
Ian
iwd@...
Oct 5, 2008 11:26 pm
15044
It'll go to 7,000 with decent valve springs but not make great power there. KA ... From: Ian <iwd@...> To: mc-engine@yahoogroups.com Sent: Sunday, October...
I built one back in the early 1970s as a short track racer. With a Carrillo rod, forged piston, titanium valves and lighted valve gear, it would run to 10k...
Dan, I recently fitted a Pazon 'Smart-Fire' digital ignition to a B44 (same system fits the C15), for a client and it is a good system, good price, with a big...
... Looking at the performance of the factory bikes in WSBK this year, the GSX-R1000 was by far the fastest bike for the first half of the season, and it still...
I've been manufacturing single and V twin cranks for historic race bikes for a while now, and rebuilding quite a lot of cranks as well. In the old bike...
Hi Greg... I would imagine the real answer is... "it depends.." Yes on a Goldie, 5 thou is very noticable.. but then some guys would never complain, as big...
Greg S, I always true cranks on the main shafts as the engines run on the main shafts, not on the centers and the center taper geometry could be bad but not...
Ron, Yep, what you say sounds about what I 'feel'. And 'it deoends' is exactly what I'd figured, and found so far. I guess all I can do is collect as many...
Thanks Ken, I most often just head straight for the v edge jig and ignore the centres as the shafts rarely are any good in my experience. As you say, that is...
Greg S, Somehow I forgot to mention that the high points on the shaft ends should be 180 apart but also IN LINE with the crankpin and, of course, the total...
Thinking about removing the catch tank from the Gilera Saturno 350. Losing the weight is the benefit. Weight of the tank, it's cap and mounting hardware and...
How about a tiny bottle just above the radiator pressure cap? Or a pressurised bottle as used on cars, but much smaller? Arthur. BTW, being HTML, this went to...
I've rebuilt quite a few single cylinder motocross cranks for the local boys and Ken's description of the high points vis a vis the twist/pinch/spread of the...
For the record, according to the 1995 Honda NSR500 handbook, it's crank should be true within 0.01mm total runout. Don't try that at home kids! It also lists...
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