New Brain Upgrade

[James A]

Okay, I've now got my new brain and am just waiting for some main shaft shims for my 500 DFC head upgrade (Why aren't these in the kit!) so I started thinking about the setup.

Can anyone provide advice on the following:

What's the best position to mount this unit on a Trex 500esp?
If I wanted to use the inbuilt governor, what do I need and how do I wire it up?
If I don't use the governor do I simply skip this part of the setup?
Finally I presume I just choose straight digital servos for the DS510 and DS520 servos fitted

Thanks in advance for the help

[Delarado]

I cant answer anything about the brain mate but my 500 DFC didnt need any shims on my EFL pro?

[James A]

I cant answer anything about the brain mate but my 500 DFC didnt need any shims on my EFL pro?

Fitted the shaft on my ESP last night and found there was some vertical play on the main shaft so did a google on it and a number of people were saying they needed the shims which you can buy for the 500 Pro. Either that or I've always had a bearing mounted upside down on it and simply haven't noticed as the esp had the adjustable collar.

[Sesame]

position wise its quite flexible, ive not measured it but it wouldnt surprise me if it fits on the bottom plate. which is where I have mounted a mini VBar on my 550. I know its a bit larger but It may still fit on the bottom plate or the gyro shelf.

The sensor has to be a digital one, and it looks from the software like its been designed with electric models in mind rather than ic. but again I have the Vbar governor but im using the gov in the esc(kontronic) take a look on helifreak their a little further down the road on using these units so theres a little more information on there regarding the governor setups etc.

yes the straight digital setups should work, but try and find the details for those servos they will probably be 1520 and 333hz the tail 270hz, but double chesk that online.

[James A]

Thanks Sesame, as always with the servos there are very few details I can find from the manufacturers although there are lots of details on how they should be setup for BeastX although that's not exactly what I was after. Anyway the BeastX goes with 1520 and 200hz for the swash and 333hz for the tail. Here's a link if it's of use to anyone: -= BEASTX - BE ABSOLUTE STABLE =-

[Sesame]

just found this looks quite a good listing

RC Helicopter Servo Pulse Widths

it may help. of course this is the 500 your talking about, I was still thinking 550 lol

MANUFACTURER	SERVO	ALL SERVOS
FREQUENCY		CENTER-POSITION PULSE-LENGTH
COLOR	HZ	µS
ALIGN	DS 410	RED FLASHING	65 HZ	1520 µS
DS 420	BLUE	200 HZ	1520 µS
DS 510	BLUE	200 HZ	1520 µS
DS 520	BLUE	200 HZ	1520 µS
DS 610	BLUE	200 HZ	1520 µS
DS 620	BLUE	200 HZ	1520 µS
DS 650	BLUE	200 HZ	1520 µS