RCU Forums - View Single Post - CARF Diablo build thread

09-01-2023 | 10:22 AM

#3

Dave Wilshere

Joined: Jun 2002

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From: Watford, UNITED KINGDOM

The vector servo mount is factory fitted. This is one area where we found a slight issue on the first kits. The mount is bonded in a few mm too close to the centre line and as a result the pitch (elevator) carbon mounting plate needs packing off the wood mount by 6-8mm depending on the servo arm offset used. The position also means that the Yaw (rudder) vector arm cannot be any longer than 34mm radius or the ball link is on the thrust tube. 34mm gives plenty of travel so it works for both axis.

Running the servo leads forward for elevators, rudder and vector servos is really easy as there is so little structure in the Diablo fuselage! I used Powerbox Maxi wire and my usual electrical insulation tape wrapped fixings that are simply tack glued down with Slo ZAP. Super easy and very light!

Wings are really straightforward. Aileron servos screw to aluminium angle brackets. 1” is about right in length. The flap servo screws into one of the root ribs. It’s important to set the arm position using your radio before you screw the servo in place.

The Electron retract ER40’s drop in to the wood mounts, CARF supply their favoured CSK wood screws. I wasn’t sure at first, but I have had no issues so I used these to screw the units in. A small amount of trimming was required to clear the wheels neatly.

As normal I Dremel flats on the pins for the M4 set screws…it is needed!

I was going to use Powerbox’s Two4One cable with the two signal wires removed for the retracts and brakes, but I found some MPX 4 pin connectors that I had to solder up…I wish I used the PB leads!!

The cover plates for the retract mechanics could be screwed in place if you put tabs in, or as mine I decided to use four big blobs of Silicon RV to stick them in place.

Fuel tank.

As standard now, CARF have moved over to the screw in fittings-this makes tank assembly a job of moments! The tank kit includes a weighted clunk, but as normal I used one of my Hi-Flow brass Felt clunks on a Tygon tube line. The tank shape is great and almost square, so the clunk moves around freely.

I used my standard go to MAP 6oz hopper tank, CARF are going the same way after trouble with some of the bling traps. Marius has an MAP bubble trap in his new Red Diablo. I offset my bubble trap so the feed nipple is on the centre line to take the tank feed line.

This also allows the overflow line to go just in front of the bubble trap and stay on the centre line. I used my std Festo 6mm Festo bulkhead fitting as the overflow fitting.

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