Balancing question!

[TitaniumTT]

Originally Posted by j9fd3s

mazda's production tolerance is something like +/- 50grams, a piston engine would explode but the rotary is fine up to 8000-8500*

Excellent post!

My theory for this is that they're still matched within about 1%, and the rotor is rotating at 1/3 eccentric shaft speed. So while you may be spinning the engine to 8500 rpm's the rotors are only spinning @ 2833rpms.

[j9fd3s]

Originally Posted by TitaniumTT

Excellent post!

My theory for this is that they're still matched within about 1%, and the rotor is rotating at 1/3 eccentric shaft speed. So while you may be spinning the engine to 8500 rpm's the rotors are only spinning @ 2833rpms.

lol, i didn't even think about that, but you're totally right.



that's the mazdaspeed motor sports page. the 20B is the 13G based engine, NOT the cosmo engine, they are TOTALLY different.

i'm also not sure which 13B and 12A rotors they are using either....