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FIREfish148 wrote:Chance Posts Joined 4/1/ Location Carson, CA US Chance 4/22/ 10:19am 4/22/ 10:19am
Rickyisms wrote: Getting ready to tear my 125 down and do the bottom end, new crank, and I'm sending the cylinder to millennium. I have always ran double... Getting ready to tear my 125 down and do the bottom end, new crank, and I'm sending the cylinder to millennium. I have always ran double rings, since that's what my dad always recommended. Never had a failure, just wondering if anyone could give me some input on the pros and cons of each. To my knowledge double ringed pistons are less likely to have a catastrophic failure, but rev slower due to extra drag/weight. I rarely race anymore so I'm not looking for huge performance benefits to where it effects the reliability of the engine, was just curious on hearing everyone's opinions.Rickyisms Posts Joined 10/5/ Location FL US Fantasy Rickyisms 4/22/ 1:12pm 4/22/ 1:12pm
Rickyisms wrote: Getting ready to tear my 125 down and do the bottom end, new crank, and I'm sending the cylinder to millennium. I have always ran double... Getting ready to tear my 125 down and do the bottom end, new crank, and I'm sending the cylinder to millennium. I have always ran double rings, since that's what my dad always recommended. Never had a failure, just wondering if anyone could give me some input on the pros and cons of each. To my knowledge double ringed pistons are less likely to have a catastrophic failure, but rev slower due to extra drag/weight. I rarely race anymore so I'm not looking for huge performance benefits to where it effects the reliability of the engine, was just curious on hearing everyone's opinions.Brad460 Posts Joined 5/15/ Location Richfield, WI US Fantasy Brad460 4/22/ 1:14pm 4/22/ 1:14pm Bruce372 Posts Joined 4/1/ Location US Bruce372 4/22/ 1:20pm 4/22/ 1:20pm Rickyisms Posts Joined 10/5/ Location FL US Fantasy Rickyisms 4/22/ 1:25pm 4/22/ 1:25pmChance wrote: I sent my CR 250 cylinder to Millennium awhile back. I had them replate the cylinder and, provide a matched piston. The piston was a single...
Bruce372 wrote: A friend of mine dynoed 1 vs 2 ring pistons on a ktm150. After all the claims about friction and all that, you'd be surprised which...Log Hopper Posts 296 Joined 6/17/ Location MN US Fantasy Log Hopper 4/22/ 1:35pm 4/22/ 1:35pm
Bruce372 wrote: A friend of mine dynoed 1 vs 2 ring pistons on a ktm150. After all the claims about friction and all that, you'd be surprised which...Chance Posts Joined 4/1/ Location Carson, CA US Chance 4/22/ 2:29pm 4/22/ 2:29pmRickyisms wrote:
Rickyisms wrote: From my research it seems like the single does rev slightly faster. I think I will just stick with what has worked for me in the...DynoDan22 Posts 769 Joined 9/7/ Location Victorville, CA US DynoDan22 4/22/ 9:26pm 4/22/ 9:26pm Bruce372 Posts Joined 4/1/ Location US Bruce372 4/22/ 9:49pm 4/22/ 9:49pm
DynoDan22 wrote: One of the main benefits of a double ring piston is heat transfer. Two rings will transfer heat from the piston into the cylinder more than...Question Posts Joined 6/26/ Location FR Question 4/23/ 1:12am 4/23/ 1:12am Edited Date/Time 4/23/ 1:16am STLSharky Posts 464 Joined 11/12/ Location Edwardsville, IL US STLSharky 4/23/ 5:48am 4/23/ 5:48am
Rickyisms wrote: Getting ready to tear my 125 down and do the bottom end, new crank, and I'm sending the cylinder to millennium. I have always ran double... Getting ready to tear my 125 down and do the bottom end, new crank, and I'm sending the cylinder to millennium. I have always ran double rings, since that's what my dad always recommended. Never had a failure, just wondering if anyone could give me some input on the pros and cons of each. To my knowledge double ringed pistons are less likely to have a catastrophic failure, but rev slower due to extra drag/weight. I rarely race anymore so I'm not looking for huge performance benefits to where it effects the reliability of the engine, was just curious on hearing everyone's opinions.JMX82 Posts Joined 5/9/ Location Hyllykallio FI JMX82 4/23/ 6:03am 4/23/ 6:03am sandman768 Posts Joined 3/21/ Location Saratoga Springs, NY US sandman768 4/23/ 7:06am 4/23/ 7:06am jk367 Posts 758 Joined 3/17/ Location NV US jk367 4/23/ 9:55am 4/23/ 9:55am Rickyisms Posts Joined 10/5/ Location FL US Fantasy Rickyisms 4/23/ 10:39am 4/23/ 10:39am
jk367 wrote: Nice info on this thread. Getting ready to do a top end on my 125 as well and would love all your thoughts on piston brands...JMX82 Posts Joined 5/9/ Location Hyllykallio FI JMX82 4/23/ 10:45am 4/23/ 10:45am Edited Date/Time 4/23/ 10:46am Bruce372 Posts Joined 4/1/ Location US Bruce372 4/23/ 10:55am 4/23/ 10:55am DynoDan22 Posts 769 Joined 9/7/ Location Victorville, CA US DynoDan22 4/23/ 3:37pm 4/23/ 3:37pm zehn Posts Joined 1/15/ Location Anchorage, AK US zehn 4/23/ 4:11pm 4/23/ 4:11pm Aventador Posts 12 Joined 12/21/ Location AU Aventador 7/9/ 7:37pm 7/9/ 7:37pm Old School Fool Posts 365 Joined 3/10/ Location Alvin, TX US Old School Fool 7/9/ 10:10pm 7/9/ 10:10pm tzmike Posts 447 Joined 2/22/ Location Warwick, NY US tzmike 7/10/ 1:31pm 7/10/ 1:31pm Piston Slap Posts Joined 7/2/ Location Stillwater, OK US Piston Slap 7/10/ 2:34pm 7/10/ 2:34pm Aventador Posts 12 Joined 12/21/ Location AU Aventador 7/10/ 4:57pm 7/10/ 4:57pm Yeti831 Posts Joined 1/30/ Location UT US Yeti831 7/10/ 6:15pm 7/10/ 6:15pm Gator 4 Posts 297 Joined 12/31/ Location Southern California, CA US Gator 4 7/11/ 10:38am 7/11/ 10:38am Timo Posts Joined 1/9/ Location Wichita, KS US Timo 7/12/ 7:20pm 7/12/ 7:20pm
Brad460 wrote: