Pinion / Gearing / Govenor

[blade_crasher]

I'm working on transitioning my 425 stretched to mid-boom setup.

I have a variety of motors (Gaui 850, Hyperion 3026-1210, & re-wound to 947kv "Z20") & gears and pinions.

I'm currently using the Z20 with 16/50/20 gearing. Optical tach HS is 2100 @ 90% flat TC.

My question is does it matter what motor / gearing I use to achieve a given HS? Is it better to run a smaller Pinion say, and then have the other gearing setup to get to the HS desired?

Also I have read that BL motors want to run at or near their full-speed mode to get best efficiency. This works for non-Gov mode I assume, but if you want some "headroom" in Gov mode using something like an 80% TC, is this causing the motor to run inefficiently?

Has anyone used a Hyperion 3026-1210 in a mid-boom setup? I bought this used hoping it might have a bit more power than the re-wound Z20.

Thanks for your input.

[Mikej]

Originally Posted by blade_crasher

My question is does it matter what motor / gearing I use to achieve a given HS? Is it better to run a smaller Pinion say, and then have the other gearing setup to get to the HS desired?

You will get better meshing with a larger pinion (i.e. more teeth meshed) so a larger pinion is less likely to strip the primary gear

Originally Posted by blade_crasher

Also I have read that BL motors want to run at or near their full-speed mode to get best efficiency. This works for non-Gov mode I assume, but if you want some "headroom" in Gov mode using something like an 80% TC, is this causing the motor to run inefficiently?

Has anyone used a Hyperion 3026-1210 in a mid-boom setup? I bought this used hoping it might have a bit more power than the re-wound Z20.

Thanks for your input.

It depends on the Governor to an extent - on most of the Govs that I have used the TC (e.g. 80%) does not relate directly to the throttle percentage as it ouwl do if you were using throttle curves. I would suggest setting it at the HS that you want and seeing ho wmuch you h ave left after (say) 5 minutes, then check the temperature of teh ESC and motor - if much too high then change things, if not .... happy days

Yeah I used one - it worked nicely, more power than my Z20A from memory