Recent content by John D

I agree with you 100%. If any of the advisors are watching I would expect we will get a disagreement. There is an equal force on the ring and sun rule that gets in the way. That is really what I would like to get a conversation started about. Thanks felmon38, John D

Felmon38, This is my question? Can I make the statements: The power on the planet is equal to the power on the input. The power on the planet can be expressed in torque and rpm. Ignoring efficiency. A side question would be; is the ratio between Ns and Nr always the same? Thanks

The unknown appears to be the torque ( Np) on the planet.

Yes I can calculate the rpm but how do I calculate the torque? Can I just use the power on the carrier and the rpm of the planet gear? Bystander is right. For purposes of understanding I was using just one planet. The point is the total power is on the planet(s). Power*5252/rpm on the...

flemon38 Because all the energy that goes through the planet set goes through the planet gear I would think the energy should be calculated the same. For many years we have been using this gear system with one member fixed. Lately we have been using it in power split situations as in CVTs and...

I was hoping for energy as in power. rpm x torque / 5252 = horse power. As if it was a gear in a sequential gear train with torque rpm and horsepower. We all chase torque through a gear set using our rules but all the parts have power, energy. I thought. thanks Bystander, John D

How can I quantify the energy on the planet gear of a planetary gear set? My thoughts are: All the energy that goes through a planetary gear set goes through the planet gear. This energy can be quantified as power with torque and rpm relative to the axis of the planet gear. Thanks John D

Thanks Baluncore, I don't know where it originally came from. It is just what I have been told and what the engineers use when calculating torque through a power split planet set. I will try to find an official source. The second part of your question is very key. In my analysis it only...

I think we have a problem with this rule. This is my understanding of the existing rule. Am I close? The rule for calculating the power distribution on a power split planetary gear system is based on the equal force rule. To calculate the power on the sun and ring of a planet set with input...

High school education. Retired from IBM 30 years. A bit of experience in control and data acquisition. Current interest in mechanical engineering, specifically epicyclical gear systems. I'm a firm believer in knowledge with understanding. This forum looks very interesting and I am looking...