rjdgriff Posted November 13, 2013 Report Posted November 13, 2013 I got 800+ hours on my 421 serval Quote
J-Madd Posted November 14, 2013 Report Posted November 14, 2013 Keep the stroke short to keep piston speed down. I'd say 10 mil max. But on the bore size, the bigger the bore, the more the intake wears into the piston. I run my bigger drag bikes the very minimum number of passes to get them dialed in. The smaller Cubs, I've ran the crap out of. This is not trail riding, but may give you an idea. Quote
J-Madd Posted November 14, 2013 Report Posted November 14, 2013 Also, you would probably need a custom ignition curve to trail ride a bigger motor. I won't pretend to know what that curve is. I don't even have a custom curve on the drag motors, even though I know OEM with a plate is not optimal. Quote
camatv Posted November 14, 2013 Report Posted November 14, 2013 not sure why motor size would dictate reliability? its more of a build QUALITY that counts... i have had motors top ends last about 3-4 years before ring and pistons jobs. ( that was riding a LOT) bottom ends with cranks on 8+ years. maintenance goes a very very long way also. hell there are plenty of really large CC snomobile 2 strokes out there running all the time. even large cc marine motors... Quote
J-Madd Posted November 14, 2013 Report Posted November 14, 2013 Scimitar = huge ports, less piston cooling and more friction. If you had a custom cylinder with a trail port I'm sure it could be big. You can't deny the stroke and piston speed. Also the marine and snomos run at almost a set RPM. I was just giving my and others experience with big twin CP cylinders. There are even a crap load of problems just trying to run a Cheetah in a road race bike. Just check it the RZ forums about The Two Stroke Shop attempts at that. Quote
trickedcarbine Posted November 14, 2013 Report Posted November 14, 2013 There are even a crap load of problems just trying to run a Cheetah in a road race bike. Just check it the RZ forums about The Two Stroke Shop attempts at that.That is because Wayne was making claims based on his theories not real world testing. Do you have any idea how many cheetahs he had set up for that servo power valve before actually sorting out the first prototype? Or how many of those 90* firing rotation cranks he asked Stephan to have produced. It all sits unusable now. Quote
J-Madd Posted November 14, 2013 Report Posted November 14, 2013 Yeah. I read a lot of that. The blame may not be totally on the cylinders. Sorry to get off topic. Quote
banshee#44 Posted November 14, 2013 Report Posted November 14, 2013 100 hp + trail bike seems crazy to me Sent from my SPH-L720 using Tapatalk Quote
trickedcarbine Posted November 15, 2013 Report Posted November 15, 2013 OK, it's a little crazy. You gotta be a little nuts to want that, but it's a good thing Quote
bluebanshee98 Posted November 15, 2013 Report Posted November 15, 2013 guess im crazy? i agree it is alot of fun! brapppp!! 1 Quote
rjdgriff Posted November 15, 2013 Report Posted November 15, 2013 guess im crazy? i agree it is alot of fun! brapppp!! I can't wait to test my 10 serval lol Quote
Sandking Posted November 15, 2013 Report Posted November 15, 2013 100 hp , how far can you ride with a stock tank. Lots of fun but plan on a short ride. Quote
bluebanshee98 Posted November 15, 2013 Report Posted November 15, 2013 I can't wait to test my 10 serval lolRedline? Quote
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