Re: [RCSE] Hi-Start HELP
Mark: I have used your 3 meter rubber on my BoT w/o any problems extending rubber 3x original length. I made mine a 3piece wing. Center section has a full hardrock maple joiner going three bays on either side of the center line. Also used 3/4oz glass cloth on the sheeting 3 or 4 bays on each side. 1/4" nylon bolt in front of main spar and 4:40 nylon bolt at the trailing edge for hold downs. Stan - Original Message - From: "Aerofoam" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, September 25, 2003 9:31 PM Subject: Re: [RCSE] Hi-Start HELP > I now own an ARF > > > BOT and would like to know from some who have flown one off a hi-start what > > > kind you would recommend. > > I have had a few of these inquiries and I honestly don't know what to recommend, > especially > since they are folding up on launch frequently. > My gut feeling is that the 2m comp. would be the best bet, but it SHOULD be able > to take the 3m. rubber. > What do those of you that fly the BOT think? > > Mark Mech > www.aerofoam.com > > > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
Re: [RCSE] Hi-Start HELP
> The weight of the BOT is around 60 oz. or 3.75 lbs. The rubber > should have a cross section (unstretched) of around 0.1 sq. in. That > weight of rubber is usually described by words like "standard", "3 > meter", "L" or "heavy duty". A good rule of thumb is that the rubber should have a tension equal to 3 to 5 times the weight of the plane being launched. The variable is the strength of the plane. A strong composite plane can probably take up to 8 times it's weight in pull, but do you really want that? My 2m comp. rubber would be about right for a semi fragile 3.6lb plane because it has about 12lbs of pull at a medium stretch. If you normally fly with a bunch of guys with 3m and you also fly 3m planes, you will probably want the 3m tubing to be more versatile, but you may not be able to stretch it as far with the fragile plane and may not make it to the top of the launch if you under stretch the rubber. Again, I will wait and listen to the "sages" on the list who have experience with the BOT. Mark Mech www.aerofoam.com RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
[RCSE] Scale Dihedral Question...
I'm building a "new" ship from an old fuselage. I know the airfoil, chord, etc. I am in an quandry as to the joiner construction area. What I want is an "standard" size aluminum tube joiner (probably from Gator R/C) that is straight. I don't think a "pre-bent" joiner will go through the fuselage due to width (but willing to listen). Right now 7/16 (9/16 with phenolic tubes) X 8" is about as big as I can get, assuming a 3 degree dihedral per wing panel (6 degree's total). I have top/bottom spruce spars (36" long) with shear webs as well. I feel that this is too small of a joiner. Almost forgot the span is 4.5 meters. Wing is to be covered in Obeechi. Weight will be "average" (whatever that means). I would like the plane to be strong enough to be mildly-aerobatic. Looking for input, 1) reduce dihedral (plane less stable, but what do most scale ships use) to 4 or 3 degrees total? 2) remove spruce spars and go with root rib/sub rib and add CF unidirection (full-span)? 3) go with a pre-bent joiner tube? 4) switch to a CF rod with approx. 7/16 dia? Steel rod (weight consideration **)? 5) switch to a glass laminate instead of obeechi? (really would like to stay with the obeechi) I realize that there is no one "correct" answer so I really am fishing for ideas/experience here! I really would not like to have $300 in the wing by going with full chord/span CF/Glass. +Stan RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off.
Re: [RCSE] New plane
In a message dated 9/25/03 9:53:06 PM Eastern Daylight Time, [EMAIL PROTECTED] writes: Acquila XL - BIG, slow, built up, spoilers, if you want em Yup, I built & fly an Aquila XL, beautiful flying plane. 150" 105oz, 1640 sq.in. Nice kit to build. Bill G
Re: [RCSE] New plane
A lot of really good planes like this over on Ray Hayes' site. Check out http://www.skybench.com/ RVC At 06:29 PM 9/25/03 -0500, you wrote: I'm up for a new plane and would like your advice. Plane will be used for LONG duration flights. I like to fly slow, Falcon 880 too fast, Little bird 2 meter too slow Landing precision not important RES, or add ailerons, built up best Not ARF Richard Mertins Milton, FL --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.520 / Virus Database: 318 - Release Date: 9/18/03
