... Its always seemed like a fuzzy thing to me, but when I bought my Honda Insight, (1000cc 3 cyl car w/ 14" DC motor for power assist and regenerative...
my personal experience of this from an automotive engineering point of view is that a break in should not be as per the manufacturers instructions where they...
Hi all. I've been lurking for some time. I once read in A. Graham Bell's "Four Stroke Performance Tuning" that the rpm limiting factor is the valve train of...
... honda cbr 250 rr only for japan market was red on 22k rpm and went to 25k or so, early 90ies technology...(4s) highest for 2s that i have heard of was 36k...
... Standard road bikes now reach 22-23 m/s MPS (Mean Piston Speed ) which is pretty amazing considering that this was Formula One territory not so long ago....
Ian
iwd@...
Jun 1, 2004 11:10 pm
7150
... And after doing so, don't forget to "hang it up wet." The following is purely anecdotal, and may only apply to 2-strokes, but I've always felt I was in a...
Ray & Sonja Crenshaw
raymanz93@...
Jun 2, 2004 2:39 am
7151
... In motorcycling terms ~18,000 out of a 900-3 is something else while 24,000 from a 25cc model aeroplane motor is completely believable. Have you seen how...
... No, but at a Road Atlanta (near Atlanta, Georgia USA) a few years back, Team Obsolete had their 250cc Honda 6-cylinder RC roadracer there, and Nobby Clark...
Ray & Sonja Crenshaw
raymanz93@...
Jun 2, 2004 10:26 am
7153
... Reputedly narrower than the twin cyl. 250 Yamaha 2 stroke of the time - no mean feat for a 6 cyl 4 str. !! ... You're a wordsmith my man by damn. ... V10...
Ian
iwd@...
Jun 2, 2004 12:55 pm
7154
... I agree - the variety of machine specification is the highlight of the MotoGP class in my opinion. But whether by coincidence or not - the championship...
Ian
iwd@...
Jun 2, 2004 1:00 pm
7155
I have a picture of the 250/6 I took in Shannonville back in 1980. From above the tank you can barely see the outsides of the outside two cylinders and this...
Hi Ian and all, Some of my old bikes have 3/8 inch valve stems. Would it be possible to do-it-yourself a sodium-cooled exhaust valve? Assuming I could drill a...
The stems of sodium cooled valves in Manx Nortons and Avco Lycoming aero engines are more like 1/2" or even 5/8" diam. The Manx went away from sodium in later...
RohanB
rohan3333@...
Jun 2, 2004 10:50 pm
7158
That should have said more AIR flow around the area, since the Manx always had valves and springs out in the breeze......
RohanB
rohan3333@...
Jun 2, 2004 10:53 pm
7159
Hi all...... I have had a question passed to me from another group and was wondering if anyone could possibly spread some light on the topic "The engine I've...
... Huh. For some reason every paragraph of your message comes in as one line, with a carriage return several feet past the edge of the screen... Lots of FUD...
... It's usually an aluminum bronze alloy in the (aftermarket) seats. Using a valve seat of just 0.70 mm might be pushing it but with a seath width of 1.00 you...
... I was talking to the guy who does my head work and he is very happy with Yamaha, Kawasaki etc for mass producing Ti valves - it keeps him busy ! He says...
Ian
iwd@...
Jun 4, 2004 12:08 am
7163
Marcus, I am sure the metallurgy is complex and had a pair of Chevy iron heads with Ti valves, seated on the stock iron head material, come in for...
Thankyou everyone for your responses, i have passed on the information but i am sure there will be further questions......... the friend in need is a massive...
... I see that often enough (on racing engines) with plain old steel valves. It's usually either improper valve adjustment or a bad cam. A weak valve spring...
Marcus, I have a twin cam Rotax engine with Ti valves and BeCu seats, done by Phil Darcy, in my roadracer, and the seats seem to last forever. Phil told me at...
cheers Ken i will pass it on ... From: Ken Canaga To: mc-engine@yahoogroups.com Sent: Friday, June 04, 2004 4:49 PM Subject: Re: technical question on valve...
Marcus Saw, Beryllium toxicity ( beryllicosis ) is a terrible and seemingly incurable but odd thing and susceptibility varies but is like an immune or allergic...
Guys, I've just been milling squish clearances into a Velocette head for a friend, working from a sample he gave me. It consists of a 5.5mm deep vertical-sided...
Hi Greg, You'll probably end up adding weld on the sides of the chamber to make it "bathtub" or even just slightly hourglass shape, depending on what you need...
"You'll probably end up adding weld on the sides of the chamber to make it "bathtub" or even just slightly hourglass shape, depending on what you need to do to...
... the ... show ... I remember the uvular peninsula hanging into the combustion chamber of my 1959 MGA and wondering if that feature was part of the multiple...
... That's probably as good a place to look as any - the Chev V8's are the last of the 2 valve ( reasonably ) high performance motors and they have had 50...
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