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- From: ntaib@silver.ucs.indiana.edu (Iskandar Taib)
- Subject: Re: Rocket powered R/C (Estes Astro Blaster)
- Message-ID: <C0DzJu.BCC@usenet.ucs.indiana.edu>
- Sender: news@usenet.ucs.indiana.edu (USENET News System)
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- Organization: Indiana University
- References: <42995@sdcc12.ucsd.edu> <1993Jan5.015534.19691@rtsg.mot.com>
- Date: Tue, 5 Jan 1993 15:11:53 GMT
- Lines: 62
-
- In article <1993Jan5.015534.19691@rtsg.mot.com> svoboda@rtsg.mot.com (David Svoboda) writes:
- >In article <42995@sdcc12.ucsd.edu> dlou@ece.ucsd.edu writes:
- >|
- >|
- >|Anyone have any experience with the Estes Astro Blaster?
- >
- >Well, no, but I wanted to clear up some things about .049's.
- >
- >|3> the .049 pusher configuration means you can't use a clunk tank (the
- >|clunk will be facing the wrong way)
- >
- >Okay, here's what you do. Use a normal tank with a balloon inside.
- >The idea is to have the balloon fill the interior of the tank without
- >inflating. The balloon is held in place by the tank cork. Then
- >instead of clunk and vent lines, you use a straight tube going to the
- >lower back of the tank, with notches cut through it (and smoothed so
- >as to not cut the rubber). You just cut a small hole in the outside
- >of the tank for a vent. When you fill the tank, first suck the air
- >out from inside the balloon, then fill away. It really works.
-
- This is a variant on what Doc Passen calls the "Limpy Bladder" that was
- popular for a while in Slow Combat. I used them because I couldn't afford
- $10 chicken hopper tanks. They worked really well too. Haven't tried it
- with an .049 though.
-
- >|and the QRC/Texaco/Black Widow
- >|engines won't go inverted which,
-
- >I've never had a QRC or Texaco, but I assure you that a Black Widow
- >has an inverted fuel system.
-
- Sort of. Out of the box its set up for control-line, with the fuel pick-
- up shoved over to the right side of the tank. It will therefore fly in-
- verted but the engine will only use half the tank. For other uses one
- usually opens up the tank and puts the end of the tubing at the bottom
- of the tank.
-
- >You can also buy tank mounts for TD 049s that handle inverted flight.
- >That will give you more power than a Black Widow.
-
- Or do what I did.. use a bladder tank on a Tee Dee! I got ridiculous
- altitudes using a Tee Dee on a HOB Two Tee with about an ounce and a
- half of fuel in a bladder tank in the fuselage bay under the wing.
-
- For a pusher though you will either need a pusher prop or a left hand
- crankshaft (I think Kustom Kraftsmanship carries them). The reed valve
- engines turn either way with ease.. quite a pain sometimes when start-
- ing! 9-)
-
- What about the Queen Bee .074? I've heard it wasn't designed to have more
- power than a Tee Dee .049, just better adapted to throttling. You use the
- same 6x3 prop.
-
-
-
-
-
- --
- -------------------------------------------------------------------------------
- Iskandar Taib | The only thing worse than Peach ala
- Internet: NTAIB@SILVER.UCS.INDIANA.EDU | Frog is Frog ala Peach
- Bitnet: NTAIB@IUBACS !
-