New Megatech Mach Racer delta wing
 

Any good?? I bought one, figured for 89 buks it was worth it.
Planning on running a OS 46AX with a tuned Pipe, what prop should I run?? LHS told a 9x6 APC. would a 9x8 be better ??
and what kind of speeds should I be looking at with this setup ??
Thanks for all your input [8D]

RE: New Megatech Mach Racer delta wing
 

Ive just got me one to,Instead of putting the twin vertical stabs on it i made 1 single vert stab with a rudder on it Im using a os 50 with 9x8 apc prop and stock muffler ..cant wait till i get my tuned pipe from tower hobbies next week oyeah i also tossed the landing gear back in the box there a drag want to see a picture look in the photo gallery under delta wings

RE: New Megatech Mach Racer delta wing
 

I just got mine yesterday....It looks fast. I have a OS .45 FSR in mine, it's the
only engine I had that would fit. ;)

FBD. :D

RE: New Megatech Mach Racer delta wing
 

FBD, I like that! You iron your t-shirts and your airplanes at the same time! :D

RE: New Megatech Mach Racer delta wing
 

:D....Kmot....it saves time that way....[sm=thumbup.gif]

My wife said either her, or the airplanes has to go !!! :eek:

Look at my hobby room. Man, I hate doing laundry. [sm=bananahead.gif]

FBD. :)

RE: New Megatech Mach Racer delta wing
 

And your reply was "don't let the door hit you on your way out" ???:)

my wife left a few years ago.... and this is how my livingroom looks now!

RE: New Megatech Mach Racer delta wing
 

Man, you sure are Crazy for Flight!!! ;) I'd sure wouldn't mind having that collection of jets and delta-wings.

RE: New Megatech Mach Racer delta wing
 

C4F: Nice collection!

FBD: how typical! The trash can is empty, but the rest of the place is trashed! :D

RE: New Megatech Mach Racer delta wing
 

Yeah, but....I know where everything is !!!! (after I find it :eek: )

:) FBD.

RE: New Megatech Mach Racer delta wing
 

Hey Flyboy, what is this strange "hollow" muffler ? Never seen that kind before [sm=confused.gif]

RE: New Megatech Mach Racer delta wing
 

That's a vintage Semco venturi muffler, I beleive.

RE: New Megatech Mach Racer delta wing
 

I noticed that the flying weight of the Mach Racer is 3.56 lbs. Take the gear off and you would lose a bit of that. At that point, it's weight should compare favorably to the Diamond Dust. (My clipped wing Dust weighs 3.68 lbs). Plus it appears to be as sleek as the DD.

With the landing gear removed, what will the speed of the Mach Racer be versus the Diamond Dust (given the same engine in each, for instance the OS .46 AX mentioned earlier)....


In other words, what would you guess would be the MPH of each plane with the OS .46 AX?

RE: New Megatech Mach Racer delta wing
 

At least, it seems to reduce muffler overall drag. How does it work btw ?

RE: New Megatech Mach Racer delta wing
 

Well, for 'muffling sound', not very well. :D

It has a dual lining. The inner shape is a venturi, which when the aircraft is moving creates a low pressure, The outer lining, or body, is where the exhaust gases go. In theory anyway, the low pressure of the inner venturi would create a scavenging effect on the exaust gases, giving a boost in flow.

RE: New Megatech Mach Racer delta wing
 

Kmot has the right idea....the inner tube runs straight through, the exhaust
goes into the outer portion and out the back. They are louder than a stock
muffler, and do give better power, no doubt about that. The are cool looking.

I have about 5 of them, The one on this 45 FSR is cast. The others seem to
be spun and welded, the massaged and polished. I've heard then called Demco.
Tatone. and Macs....I got them all second hand....I don't really know where
they come from. This one is on a 60 Rossi, and a couple on OS 60 FSR's. ;)

FBD. :D

RE: New Megatech Mach Racer delta wing
 

FBD: If you ever want to part with them, I will give them a happy home. :D

http://www.fototime.com/42A49EF762B828B/standard.jpg

RE: New Megatech Mach Racer delta wing
 

You bench is too well organized, it should look more like this....:)

RE: New Megatech Mach Racer delta wing
 

Oh I see. You mean it should look like this?:D

RE: New Megatech Mach Racer delta wing
 

With the landing gear removed, what will the speed of the Mach Racer be versus the Diamond Dust (given the same engine in each, for instance the OS .46 AX mentioned earlier)....


What about the speeds of both with the Jett .50?

RE: New Megatech Mach Racer delta wing
 

Your clipped wing Dust weighed over 3.5 lbs? My regular Dust with a Jett 50 only weighed 2 lbs 12 ozs. (no fuel). I am wondering the thickness of the Mach Racer wing. The Dust is about 5%. It also appears the mach Racer has more frontal area behind the engine. My guess is that the Dust will be faster. My first Dust started with a 46 FX and UT muffler. Speeds probably in the 125/130 range turning a 9x7 at 16,500 rpm. 150+ speeds with the Jett 50.

RE: New Megatech Mach Racer delta wing
 

I eyeballed the Mach racer at 1" thick....not bad, I think it will scoot.
I ran up the OS 45 for the first time, and it's a good one. ;)

FBD. :D

RE: New Megatech Mach Racer delta wing
 

I think my Dust is big-boned ;)

RE: New Megatech Mach Racer delta wing
 

Lucky guy !! Is it tight ??

RE: New Megatech Mach Racer delta wing
 

Whoa- Cool looking bird--- I been gone too long! $89 bucks?

Dave with the FSR, imagine with an APC! ;)

RE: New Megatech Mach Racer delta wing
 

Strykaas....it's a ringed engine, so it's not tight. However, it is crisp
and has excellant compression....no bearing noise. I put a new plug
in it, and primed the carb....it fired right up. ;)

Razor....where ya' been ? I still have the bag of APC's for you. :)

FBD. :D