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1. 11:50 PM - Firewall Forward Odds and Ends (Leland)
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| Subject: | Firewall Forward Odds and Ends |
--> RV9-List message posted by: Leland <Federigo@pacbell.net>
While waiting for my engine, I started on the Firewall Forward kit and
encountered some problems. These are listed below.
The hole in the firewall for the nose gear bolthead on my Quickbuild is
5/8" too low. I've rechecked the dimensions and the hole is centered
exactly where DWG 19 calls for it. I mentioned it to Gus and he said he
had just talked to a builder whose hole came out dead on. I'm baffled as
to why my hole location is wrong. I suggest that builders mount their
nose gear before drilling a hole that may not even be necessary. This
problem was discussed by listers a few weeks ago.
I also suggest that builders delay making the firewall holes until they
have the throttle, mixture, prop control and carb heat cables in hand
and have decided whether they are going with Van's style feedthroughs
(plastic bushings with ProSeal) or if they are going to use the larger
eyeball feedthroughs of the sort sold by Spruce.
Drawing 24 detailing the Engine Control Bracket (F-746 AFT) shows all
four holes as being 1/2" in diameter. However, the Bowden Carb Heat
Cable needs a 3/8" hole and the Mixture control wants 3/4". (It's easier
making holes larger than smaller.) The Throttle cable use 1/2".
Drawing OP-31 for Van's wiring package shows a voltage regulator in the
schematic and DWG OP-10 shows a 35 Amp breaker. However the Firewall
Forward kit includes 60 Amp alternators having an internal regulator.
The 60 Amp alternator is said to be more reliable. (I bought and
installed the wiring kit before buying the firewall forward kit.)
Anybody want to buy a 35 Amp regulator and breaker for half-price, with
shipping?
The oil breather tube marked FF-706 is actually an FF-705 (Van's only
has one breather).
Leland in Pleasanton
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