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Post by ghostaroni on Sept 12, 2021 20:50:04 GMT -5
Thanks to everyone that has participated so far. Keep the stories coming. It sounds like I had the right impression. Most of us melting stuff are pushing it, chasing that elusive beast that we call... More. Some of us manage to tame it, but often More gets the best of us and escapes through a hole in a piston. There must be a whole bunch of More out there, because even if we figure out how to get our hands on it without getting bit; some of us go right back on the hunt for More. I'm guilty of thinking that a little extra is worth a little risk too often. Even my Dell on the TPR has the needle a slot leaner than it should be at for safety. Why? More response, more wheelies, more of an edge. Same deal with timing. It should probably be backed off 1-2 degrees for safety as well... but... More. More is all I've ever wanted, and I'm never happy for long when I get it. I'm at the point now where if I want more power from my build, it can't be expected exclusively from jetting. bore up, or stroker crank it, or a bigger carb, or a sicker exhaust, bigger over range. etc etc. the world of possibilities... I hate and love the amount of possibilities. edit: and I burned one piston and cylinder so far. stock 50cc chinarelli piston, ran too lean from air leaks.
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Post by 65grendel on Sept 30, 2021 16:55:37 GMT -5
I destroyed 2 corsa pistons and 1 head on my minarelli 24mm carb voca combat pipe in under very little miles the 2nd piston around the block! I incorrectly installed a cable choke so it ran lean when I sat on my (bugeye) zuma. I felt like a total effing goof!
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Post by hellish100 on Oct 23, 2021 8:57:08 GMT -5
5 top ends and no destroyed pistons yet. Clearly I am not trying hard enough!
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messenger
Scoot Enthusiast
Posts: 188
Location: Coventry, u.k.
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Post by messenger on Oct 23, 2021 11:48:21 GMT -5
I had a mid race 70cc set up on my daily, probably about 12 hp, which i rode all summer without any issues.
then winter came, and one frosty morning i melted a piston on the way to work.
The A/F mixture must of been just on the very edge of safe for the summer, went too lean once the air temperature plummeted.
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tysta
Scoot Member
Posts: 47
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Post by tysta on Aug 8, 2022 22:59:54 GMT -5
yap quite a few times when iam pushing the limits it happens like this one trying to rev this AC to the moon
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Post by aprilialenni38 on Nov 28, 2022 6:39:45 GMT -5
If you never destroyed a piston, on a 2 stroke. Get that head, out youre own ass, an go out some Numbers, on The mile/kilometer tracer
With all that rpm, and 2x faster stroketime, and double The spark, compered to a nearly invinvible 4-stroke, but so mush more boring, and so little tuning potencial, but still fun to Tune
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Post by TuneGoon on Dec 2, 2022 21:05:00 GMT -5
I wouldnt say I "ruined" it since I threw it right back together with some new seals and rode it like I stole it. I'll go with "comprimised" it lol This was after like 3 soft seizes: 2T's are quick to let you know you aint tuned right but seem a lot more forgiving when run lean. Certainly with cast iron kit.
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sinfull
Scoot Enthusiast
Posts: 353
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Post by sinfull on Dec 2, 2022 22:36:32 GMT -5
Never met a piston I could not melt. 😀
When I was serious about my 2t I always ordered 2 cylinder kits at a time, 1st one to get it right on the very edge, then change it out, as long as my bearings were good, back my tune down and run it hard knowing what the limits were for that combination was why my bikes always pulled incredibly hard.
1st kit always got sacrificed to the 2t gods 😀
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