---------------------------------------------------------- RV9-List Digest Archive --- Total Messages Posted Sun 04/13/03: 4 ---------------------------------------------------------- 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 _____________________________________ Time: 09:17:40 AM PST US From: Leland Subject: RV9-List: Re: canopy cutting --> RV9-List message posted by: Leland 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 _____________________________________ Time: 04:01:40 PM PST US From: "Welch, Ivo" Subject: RV9-List: performance and prop --> RV9-List message posted by: "Welch, Ivo" 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 _____________________________________ Time: 05:46:15 PM PST US From: "steve dwyer" Subject: RV9-List: nose wheel fairing question --> RV9-List message posted by: "steve dwyer" 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 _____________________________________ Time: 08:57:37 PM PST US From: "Jones" Subject: Re: RV9-List: nose wheel fairing question --> RV9-List message posted by: "Jones" 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" Subject: RV9-List: nose wheel fairing question > --> RV9-List message posted by: "steve dwyer" > > 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 > >