Miscellaneous Firewall Forward stuff

October 17, 2018 – I realized it’s been a while since I posted an update, so here goes…

Engine control cables

I started assembling the parts for engine controls: throttle, mixture and prop. I started with the mixture, since it’s a fairly complicated bellcrank system that reverses motion. The first problem that I ran into was that the mount bracket for the bellcrank does not fit as advertised on my engine. Right where this bracket is supposed to go, there is a drain plug in a boss on my Superior cold-air sump.

I found online where someone else had this same problem. They started by grinding down the height of the plug. So I did that, but the boss that the plug is in will not allow the bracket to sit in place.

I decided to trim the bracket until it does fit. After everything is installed and works, I’ll take the bracket off and make a new one. You can see that I removed a lot of material. That’s fine.

So I assembled the bellcrank and moved on.

I measured for the three cables, since I am using a throttle quadrant instead of the traditional push-pull controls supplied by Van’s. I ordered some from Van’s and just got them today. I also drilled the holes in the firewall at the three recommended locations. They’re just 1/2″ right now. I’ll take them to final size when I start test-fitting the cables.

 

Fuel Flow Transducer

I figured out where I’d like to mount the Red Cube. It will be inline between the servo and the flow divider, and I’ll mount it on the engine mount behind #3 cylinder. I had the long fuel hose that goes there…I sent it to Tom Swearengen at TS Flightlines. He took care of me. I’m a big fan…

Oil Temp Sensor

I installed the oil temp sensor as required…

Engine Electrical

I’ve been slowly working on cables for the battery, starter, etc. The only picture I have right now is the copper bar between the contactor and the relay. I replaced the one bar I had with two that total .125″, which is closer to the plans.

I got in touch with a guy who was in town and bored (he posted on Van’s Air Force). He was looking to see if anybody needed a hand with anything. So he came over today to visit, and we took care of a short list of items I needed an extra pair of hands to get done.

We installed the firewall pass-thrus, and I needed to remove the manifold on the firewall so I could get fittings in it. We removed it, installed the required fittings, and reinstalled it. If I ever have to take that manifold off again, I’ll install nutplates.

Time: 13:10

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