... Apparently the designers of my Honda RC17 engine did not read the same book, the spec pressure is 90psi at 7000rpm. I guess the hydraulic tappets like that...
... 80 ....90 ...near enough. Some builders have motors running at 150 psi. ... Ah ? The oil is 'under' the main shells by design - not sure how it could...
Ian
iwd@...
Jan 1, 2003 2:01 pm
4696
... This is plausible-sounding, but it's evidently a non-problem and I have two reasons to think that 1) never heard of it before! 2) the oil pressure would...
bjammin@...
Jan 1, 2003 2:27 pm
4697
... Of course it once was common for shells to "float" - oil pressure was "under and over" the shell and the shell rotated in both the rod and on the pin. I...
I`m looking for some mc 4stoke pistons to do a bigbore project. I need some pistons in the range of 72-74mm dia. with a 17mm pin and flat top (heron head). ...
passberger@...
Jan 5, 2003 1:55 pm
4700
... Probably you should stick to min of 3 mm in valve pocket bottoms. Regards, Hoyt McKagen To prevent virus propogation, please don't put this addy in your...
bjammin@...
Jan 5, 2003 2:31 pm
4701
... Are you sure about this ? A "heron" head is flat - the combustion chamber is in the top of the piston. ( They have concave tops ) As to 72-74 mm pistons...
Ian
iwd@...
Jan 5, 2003 2:36 pm
4702
... http://www.wiseco.com Cheers IAN -- DRYSDALE MOTORCYCLE CO. AUSTRALIA PH: +613 9562 4260 FAX: +613 9546 8938 GP PROJECT SITE: http://www.22000rpm.com ...
Ian
iwd@...
Jan 5, 2003 2:43 pm
4703
... Bikes are under "Powersports". -- DRYSDALE MOTORCYCLE CO. AUSTRALIA PH: +613 9562 4260 FAX: +613 9546 8938 GP PROJECT SITE: http://www.22000rpm.com ...
Ian
iwd@...
Jan 5, 2003 2:45 pm
4704
... These are flat. ... Domed. ... Domed. Have one in basememt. Honda XL 250 is 74 mm and flat except for a slight loft at edge, but wrist pin is I think 19...
bjammin@...
Jan 5, 2003 2:46 pm
4705
... JE Pistons, here in the states, does custom pistons all the time. I'm sure they can make one to fit your needs. I don't have any contact info for them but...
... Another couple of possibilities are the GSXR1000 (73mm), CBR929 (74mm) and the R1 (74mm), although their pistons aren't likely to be very flat. The CBR954...
... Yes I know this, but I don`t really expect to find a real heron head piston. So I`m looking for some flat ore concave ones that I could machine valve ...
passberger@...
Jan 6, 2003 10:37 am
4708
Possibly, pump drive gears could wear prematurely....
... Second-generation Ford flathead V8s used "floating" rod bearings - there was clearance and Babbitt on both sides of the bearing shells. It worked just...
... For a small block Chevy it was probably a reasonable rule of thumb. However, the Chevy's oiling system is nothing to brag about, and the crankshaft oilways...
... Mazda rotaries are 90 to 120 PSI. Which is peculiar, since they have nice wide bearings which should theoretically be ideal... of course, the eccentric...
Hi Hoyt, Some engines had oil holes positioned such that the rollers don't really cross the oil holes - they had not needles but rather groups of 2 or 3 short...
I've been a mostly silent 'lurker' on this site for some indeterminate time but have alwys enjoyed the discussions, only bobbing up when I have anything to add...
Greg, I'm sure we have had this question before !!? Are all your fork bushes and spindles in excellent condition ? What tyres you currently have fitted ? Tried...
... mc-chassis-design@... It's a good technical chassis discussion list - actually frequented by Tony Foale - the chassis guru who cut his teeth on...
Ian
iwd@...
Jan 7, 2003 1:47 am
4716
Does anybody know what the two vent lines in the valve cover on a CBR600F4i that when blocked off, prevent the engine from running are for? The line has...
Greg, Without reading anymore into it I'd suggest your trail is way too short. Even the most nimble of Gp racers like RS125s run around 84mm of trail. Rgds, ...
... These are part of the exhaust air pump which is used to reduce unburned hydrocarbon emissions. On the original bike, the lines attach to the airbox and ...
... Thanks Ian, I'll give it a go, sounds like just what I was looking for, and I just finished referring to the Tony Foale/Vic Willoughby book on chassis for...
http://story.news.yahoo.com/news?tmpl=story&u=/030106/161/2ziw9.html Maximum engine in minimum bike ? Something to out-Vmax the V-max ?? 4 wheel independent...
Phil Irving book "Motorcycle Engineering" says "Generally speaking, a trail of 3 to 4 inches will give very good high speed steering, with some heaviness on...
... Just a thought here, based on what Kevin Cameron wrote in a recent (last 12 months?) version of his Cycle World column. Is it POSSIBLE that the ...
james ray crenshaw
james@...
Jan 8, 2003 10:37 pm
4723
Could be something in that. I was looking at some Lambretta (or was it Vespa?) books, and noticed that one year they changed the recommended petroil ratio so...
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