Why does the Con Rod fail in 4 strokes and not 2 strokes?

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Mr. Minecraft

Visionary
Jan 13, 2012
349
0
0
San Diego
Every one always says Titans are great but if I over rev it the con rod will fail. I have never been told high Roma will cause a 2 stroke con rod to fail. I have pushed some racing two strokes near 16k rpm
 

Ibedayank

New Member
Oct 29, 2011
1,171
0
0
Columbia Tennessee
Every one always says Titans are great but if I over rev it the con rod will fail. I have never been told high Roma will cause a 2 stroke con rod to fail. I have pushed some racing two strokes near 16k rpm
over rev any motor and they upchuck parts...

your race bikes did not have motors that can be replaced for under a $100 if you blew it up either!!!

you get what you pay for
 

Greybeard

New Member
Feb 8, 2011
336
1
0
Sequim WA
On my Honda 50cc GHX, the govenor was set @ 7800, has been removed so top rpm is in the 8200 range on the level with my 210 lbs, and 6'3" frame catching air.
From what I read, most agree that the Chinese 2-strokes turn in the 6K range, with a few people getting away with more.
I haven't busted a rod yet, but I've seen 8600 while laying down to reduce drag and on a road that is about 1.5% downgrade.