Today's Message Index:
----------------------
1. 09:17 AM - Re: canopy cutting (Leland)
2. 04:01 PM - performance and prop (Welch, Ivo)
3. 05:46 PM - nose wheel fairing question (steve dwyer)
4. 08:57 PM - Re: nose wheel fairing question (Jones)
Message 1
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| Subject: | Re: canopy cutting |
--> RV9-List message posted by: Leland <Federigo@pacbell.net>
Roy, your fear of cracking the canopy is justified. The archives are
loaded of such horror stories. I broke two corners off mine but the
scars will be hidden by skirts. I've heard that Van's gives you a
discount on replacement canopies, but in your case that would entail a
big shipping delay. Why are you using a Dremel for cutting? Van's Norton
cutoff wheels on a pneumatic drill work faster. Van's also sells an
inexpensive fixture for holding the wheel in a chuck. I also used a
rotary/vibratory power sander for smoothing the initial cuts. All that
hand-sanding gets old.
Watch out for the C-660 side skirts as the plans call for a nominal 4
9/16" width but the part is only 4 1/2" to begin with. It is possible to
get a good fit of the rear skirts without using an English Wheel or a
Shrinker, but it takes finessing. You might want to order up extra
material to have on hand when you screw the parts up. Also order extra
plastic rollers for when yours get loaded with metal chips.
As has been pointed out on this list earlier, spend lots of time getting
the frame bent correctly.
Leland in Pleasanton
Working on transponder and radio wiring
Message 2
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| Subject: | performance and prop |
--> RV9-List message posted by: "Welch, Ivo" <ivo.welch@yale.edu>
what IAS do you get with your 160hp?
I am trying to gauge performance (on my cato prop). The plane is pretty
clean
(very nice riveting job), few antennas, etc. the temperature at sealevel
was
15 degrees centigrate, 3012 altimeter, clear weather. flight service
indicated
wind from about 320 at 6000' and 9000'. tests below flew west, north, east,
and
then averaged. made little difference to IAS. I flew at 9500'-9,800'
altitude.
of course, tests were run flying level. If I have my conversion right, at
about 10,000', I should multiply IAS by about 1.16 to get TAS.
Full throttle, 2620-2640rpm: IAS = 140mph to 144mph.
==> TAS= 165mph.
[GPS GS ~ 123kt w/ wind [east\ to 188kt ag/ wind [west].]
(Fuel Flow: 8.5gph)
2550rpm: IAS = 134mph to 138mph.
==> TAS= 158mph.
[GPS GS = 179kt with wind [east] to 118kt against wind [west].]
2450rpm: IAS = 130mph to 132mph.
(Fuel Flow: 6.5gph)
Given my 160hp Lycoming, Vans website indicates an RV-9A should reach 196mph
top
speed, 188mph at 75% cruise (which I think is pretty close to 2550rpm). So,
I
think I am going about 25mph IAS less than specified. Is this correct, or
is
my math wrong?
ENGINE QUESTION: I have another performance question: is there any
reasonably
gentle, available, and affordable enhancement to feed the engine more oxygen
at
higher altitudes and w/o stressing it unduly? [I take it that van's does
not
recommend higher hp engines because he is concerned about airspeed. at
higher
altitudes, I am far from critical airspeeds, so here a boost would probably
be
ok. would an oxygen boosted engine have more reliability trouble?
/iaw
Message 3
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| Subject: | nose wheel fairing question |
--> RV9-List message posted by: "steve dwyer" <stdwyer@dreamscape.com>
It says to finger tight the 3/8 allen screw when installing the forward fairing
support bracket part number U-813D on drawing C1. I can not find anything else
telling us how to final tighten the bolt and there's no space to get the allen
wrench in there, does anyone have a suggestion in short of drilling a hole
in the fairing to insert the wrench?
Steve Dwyer
Message 4
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| Subject: | Re: nose wheel fairing question |
--> RV9-List message posted by: "Jones" <esnj@granbury.com>
I drilled holes,5/8" I think, and then covered them with plastic hole plugs
from Lowe's painted to match the fairing. Same for the valve stem access
holes on all 3 fairings, except larger holes....Dick Jones
----- Original Message -----
From: "steve dwyer" <stdwyer@dreamscape.com>
Subject: RV9-List: nose wheel fairing question
> --> RV9-List message posted by: "steve dwyer" <stdwyer@dreamscape.com>
>
> It says to finger tight the 3/8 allen screw when installing the forward
fairing support bracket part number U-813D on drawing C1. I can not find
anything else telling us how to final tighten the bolt and there's no space
to get the allen wrench in there, does anyone have a suggestion in short of
drilling a hole in the fairing to insert the wrench?
>
> Steve Dwyer
>
>
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