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Once again, it's time for the FNGT!

If you don't know how this works, . That link will take you to another site to give you some additional information and tell you about some of our off-site features. That's also the site where we will host the weekly guitar threads, should Poal go down.

NOTE: That site is by invitation only. If you want an invite, and you're a regular participant, then just ask Crazy, or myself.

If you do know what's going on, you probably don't need to click that link - but you may want to, to make sure you know of the other features, such as the archive or a separate forum that's invite only.

Remember, we are guests here on Poal. Let's act like it. If you're interested in supporting Poal, then .

**Once again, it's time for the FNGT!** If you don't know how this works, [click this link](https://fngt.gq/index.php?page=intro). That link will take you to another site to give you some additional information and tell you about some of our off-site features. That's also the site where we will host the weekly guitar threads, should Poal go down. **NOTE:** That site is by invitation only. If you want an invite, and you're a regular participant, then just ask Crazy, or myself. If you do know what's going on, you probably don't need to click that link - but you may want to, to make sure you know of the other features, such as the archive or a separate forum that's invite only. Remember, we are guests here on Poal. Let's act like it. If you're interested in supporting Poal, then [you can donate](https://poal.co/donate).

(post is archived)

[–] 0 pt

I found the answer, I think...

It has to do with the crank shaft and piston position. They cross the plane of each other at 120° intervals - meaning the pistons fire (and move) in a way that reduces inertia (vibration). It's not only nothing all that fancy, it's how pretty much all bikes like that do it.

I think...

I watched a couple of videos and read two articles from motorcycle people.

[–] 0 pt

is it kind of like a rotary engine?

[–] 0 pt

No, just has the cylinders passing each other in the middle. They 'cross the plane' of the other pistons.