Anyone Using the 112 KDE Direct Main Gear in their PRO DFC?

[RC/DC_5000]

I really think the 600L needs a tiny bit higher gear ratio. Not specifically to raise the headspeed, but to get the 750mx weighed down with a load so the CC governor can work better. The 750mx motor torque tends to over do it with governor gain. Too much or too little. Never just right. I went up a tooth on other CC governed setups... and it was miracle in governor performance.

I see KDE Direct thankfully makes a 112 Helical main, Mod 1 for the Trex 600 Pro Main gear case. Must have the adjustable motor mount of course.

My question- if anyone uses this gear.... Does the 750mx still clear the servos by moving the motor closer to the smaller main gear?

This gearing combo would give a nice range of 2200-2500 rpm governed. This would be ideal IMO. And I just about guarantee the CC governor would perform better. Also tame down the 750mx motor torque so it doesn't snap the tail around so much.

[RC/DC_5000]

This thread will die quickly no doubt. I don't think theres even a slim chance it will work with the 750mx.

I wish Align would make a 15T helical for the 600L... Throwing it out there for Align to read I hope. 2500 RPM governed on a 600 is quite right for smack 3D. And the 15T would max out with CC governed at exactly that.

Until then, we are stuck at 2380 max governed with CC.

[ticedoff8]

Why not use your FBL gov?
I use the Skookum's internal gov with the CC set to "multi-rotor" node.
Seems to do a pretty good job

[RC/DC_5000]

I wish... I have the Gpro right now. Flies great.. but no governor. I think I might get the new VBar NEO. That may solve that. Thanks for the reply and advice. I think you're right.

[ticedoff8]

GPro has an internal gov - same as the 3GX

You just need the brushless motor sensor

[RC/DC_5000]

Really? I mean the Castle ESC has the motor sensor... I've never heard of anyone using it with the Gpro.

Any links or advice on how this works?... Thanks.

[ticedoff8]

It works the same as all the others.

If you have the CC Edge HV (like I do), plug the white wire into the GPro's sensor port, program the Edge to use the white wire for RPM Out and you are done.
I guess you might have to find one of those mini-JST connectors (like they use on the 3GX) for the GPro - I don't know about that.

You have to program the GPro for the correct pole count and gear ratio.
But, I don't know how to do that part.

[TR450ZS]

My understanding is that the 3GX and the GPRO gov function works only on nitro motors.

[xrayray]

I have a trex 700 112T slant mod 1 if you want to trade with your 118T mod 1? It's brand new the only thing is that it's white :-)

[RC/DC_5000]

Appreciate the offer.. but there's now way the 112 main will work with the 750mx. That'll move the motor closer to servos.... and its already about 3mm away.

I've emailed Lynx, Align and KDE and asked them to make a 15T helical so we can govern this thing to 2500 where it needs to be. Until then, I'm going to run a flat 90 to get the 2500.

I'm not super happy to give up the governor.. but for now, its just gotta be. Please, someone make a 15T pinion.

[xrayray]

yay flat throttles! I've got the 100% doing good too. I'm on the fence between this and my V curve but I've been switching back and forth and can't tell a difference. The hovering rpm sound is nicer at 100 though.

[RC/DC_5000]

Well it should be fun to hear it at least. I'm pretty bummed about having to go without a governor for awhile. I love them so much.

I emailed a couple custom machine shops to see if they can cut me a 15T helical from steel. Sounds kinda pricey... but I at least have to try.

[xrayray]

so if you wanted to run 100% you would sound like Manny's 600 pro lol

https://www.youtube.com/watch?featur...&v=UCjVqy4Xwpk

[RC/DC_5000]

Haha.... oh oh... Thats me holding the light :-)

[ticedoff8]

Originally Posted by TR450ZS

My understanding is that the 3GX and the GPRO gov function works only on nitro motors.

The 3GX and GPro gov works with either nitor (using the direct connection to the magnetic sensor) or the electric (using the brushless motor phase sensor).

People may not like the 3GX or the GPro's ability to manage the RPM on an electric - but that is a different story.

Typically, the FBL uses a gear ratio to calculate the headspeed based on the motor's (electric or nitro) RPM.

In an electric motor, the gear ratio you enter in teh FBL is based on the formula:
(GR) x ( # of magnetic poles) / ( 2 )
GR = the mechanical gear ratio of the main gear and the motor pinion.
# of pole = the number of magnetic poles in the brushless motor

EG:
My Trex 600E uses a BL750MX (10 poles) and it has an 1:8.42 main gear ratio.
I set the FBL's "Gear Ratio" for the input sensor to '42'

Then, you make sure the ECS is set to "External Gov" or "Multi-Rotor" mode - this will give the throttle input instantaneous control of the helicopter's motor.

You may not like the GPro or the 3GX governor's response.
But, they do work with electrics

[TR450ZS]

Thanks ticedoff8, you taught me something new.

[TR450ZS]

The latest MSHBrain firmware apparently has an excellent governor function, repoetedly better than the CC gov. I wonder if that would not make the 600 with the 730 motor behave better?

[RC/DC_5000]

You're thinking right up my alley TRZ450ZS.

I could buy a new HV speed control with a better governor for 200 plus bucks. Or just buy a VBar NEO and use the internal governor. Same price, bigger reward.

I really believe that the CC governor could work well if the gearing could be changed. For now, its not gonna happen. Hopefully LYNX will make the 15T. This would go well with their adjustable motor mount.

[ticedoff8]

The FBL uses a "feed forward" algorithm on the governor.
So, the FBL predicts how much to adjust the throttle before the adjustment is needed.

The ESC has a reactive governor.
It senses a change in the RPM and adjusts the throttle to react to the change.
No matter whose ESC you use, it will always be "behind the curve".

The Icon (MHS Beast) is an okay FBL. So is VBar.
Actually, they are all pretty good.
I flew 3GX for awhile.

Then I went to Skookum.
I currently own 5 SK gyros now.
And 2 of them have GPS