Originally Posted by
Alexv2024
I did not miss the point. You called it a test of X but you actually did test Y.
However, its still valuable and interesting. You just should have done the test back to back with a thin pinion. And Roelofs point is very valid as well. Rcs are very small, so any difference any change, all details matter.
Though Junkie your test was interesting. It isolated just the gear friction aspect of power loss. So you cant call it a thin pinion test, because even an aluminum thin pinion is signifigantly lighter. Also as Roelof pointed out metal on metal is the worst case scenario for that. But you're just 1 test shy of having a full data set, maybe 2 tests if you can test a plastic spur vs metal pinon. Or a thin aluminum pinion and thin plastic pinion.
So you have your original test, the pinion moved for half engagement, and then a true thin plastic pinion for the best case scenario. But with a 7 KV difference between the first tests, it really is a small difference.
So, at the tracks, you have the guys with the thinner aluminum gears talking about the performance differences they have noticed. The guys with the wider pinions don't believe there is a difference. I have some thin plastic pinions, but they are worn. However, this was not about what is lighter or what material is better. As I stated in the video, it is based off of friction and only friction. I didn't even put any lube on them because that's not the point. Maybe that could be part of my next video. Maybe I'll slap some dry silicone or some lead on the gears.
Like my other videos, about upgrading motors, I wanted to show step-by-step data on where the actual performance is coming from. If I would have just slapped on a thin plastic pinion, I would of have people screaming "The performance is due to it being plastic." while others are screaming "No, it's due to less surface area," and then the other group claiming, "It's because of the lower rotating mass."
Soooo... I am trying to eliminate those discussions.
Anyhow, I have another plastic pinion on its way. I'm hoping to get it this week and have the video up by the end of this weekend.
Thank you for the complement about the video having good valuable and interesting content, which is my goal. I know I will not have all the information in my videos, but I try to do the best I can with what I have.