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V twins are way better balanced than single cylinder engines. Singles have extreme primary imbalance. V-twins are a bit primary a bit secondary but neither is e
by mtreis86 3y ago
V twins are way better balanced than single cylinder engines. Singles have extreme primary imbalance. V-twins are a bit primary a bit secondary but neither is extreme. Dirt bikes don't have rubber motor mounts. No motorcycle I'm aware of does.
In terms of imbalance and vibration, IMO, thumpers are the worst, then parallel twins with 0-degree cranks, then other parallel twins. Triples and v-twins are somewhere in the middle. Inline four is decent, inline 6 is even better, boxer is best.
- tyingq 3y ago>Dirt bikes don't have rubber motor mounts I've seen the rubber isolation points, like these from a CR250R: https://i.ebayimg.com/images/g/Wg4AAOSw4~tkytUO/s-l1600.jpg https://i.ebayimg.com/images/g/Wg4AAOSw4~tkytUO/s-l1600.jpg https://i.ebayimg.com/images/g/C2oAAOSwFxJiJkYw/s-l1600.jpg https://i.ebayimg.com/images/g/C2oAAOSwFxJiJkYw/s-l1600.jpg https://i.ebayimg.com/thumbs/images/g/24UAAOSwT5RiJkY0/s-l500.jpg https://i.ebayimg.com/thumbs/images/g/24UAAOSwT5RiJkY0/s-l50... Other bikes have isolators that aren't easy to see at first glance, as it looks like a bolt passing through the frame/engine. You have to remove the bolt to see it's floating on rubber or nylon isolators.
- mtreis86 3y agoAh yeah I could have been more clear and less rigid with my language. Some treat the engine as a stressed member (part of the frame) and have no motor mounts. Not all.