Counter balance?

Discussion in 'General Engine Discussion' started by robcas631, Oct 16, 2011.

Help Support HMEM by donating using the link above.
1. Oct 16, 2011

robcas631

Well-Known Member

Joined:
Sep 30, 2011
Messages:
525
71
I am wonder as to how one calculates the counter balance weight on the crank? Do you add the weight of the connecting rod + 1/2 Crank?

2. Oct 18, 2011

Maryak

Well-Known Member

Joined:
Sep 13, 2008
Messages:
5,001
73
Rough and ready........... the counter weights equal half the weight of the moving parts.

Best Regards
Bob

3. Oct 18, 2011

MachineTom

Senior Member

Joined:
Oct 20, 2010
Messages:
851
114
The answer depends on the configuration of the crank, and engine. Inline or V, what angle of Vee, plane of crank 1, 2, 3. On a single cylinder engine, counterweight = 100% of the rod +50% of the piston mass. There is really much math involved in setting the mass of the counter weigh, RPM is a large factor, rod lenght, on and on.

4. Oct 19, 2011

Joined:
Sep 30, 2011
Messages:
525
71
Thank you!

Title
Replies Views
Last Message

Replies:
185
Views:
56,949

Replies:
4
Views:
129

Replies:
19
Views:
1,246