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-   -   Magnum weed wacker.... (https://www.rcuniverse.com/forum/extreme-speed-prop-planes-104/967136-magnum-weed-wacker.html)

SJN 07-17-2003 05:15 PM

Magnum weed wacker....
 
Ohhh man...Ive just ordered my 3rd. magnum :-)

coming out of a 90dregee steep dive, and pulling up so it flatens out at half a meter over the ground is realy cool.....
You just have to remember too pull back up again in time at the end of our field , as there are bushes and all kind of nasty stuff to get tangled into.....

Well, I cliped a bush clean while going realy fast :-) the plane said WACK! , and it yawed a little, and then flew on. It wanted to roll verry little, so i decided to land :D .


this is what I had done :cool:

http://bornholm.adsl.dk/modelfly/fil.../Dsc00700s.jpg

http://bornholm.adsl.dk/modelfly/fil.../Dsc00701s.jpg

even the tail got it...

http://bornholm.adsl.dk/modelfly/fil.../Dsc00702s.jpg

SJ.

Gricey 07-17-2003 05:32 PM

Magnum weed wacker....
 
Nice one SJN, I can't believe it kept flying.... must be one of the benefits of a delta wing I guess...

Well join the club, I'm at 3 now and I think a few others are too.

Post the frame numbers, interesting to see the trends...

You've got the right idea though going for another one.... at least you only need the wing/frame, should be just over €100 cheap at half the price!

SJN 07-17-2003 06:04 PM

Magnum weed wacker....
 
well, the wing can easily be fixed......but it takes time.

Ill problably glass the whole model, and sharpen the leading edges.......when I have time for it :-).

Gricey 07-17-2003 08:06 PM

Magnum weed wacker....
 
Nice, now you have a donor frame for a micro-b and convert this to a twin tail (F15 style).....

First turbine Magnum on the web..?? could be an interesting post.

:-)

Gricey 07-17-2003 08:07 PM

Magnum weed wacker....
 
How many lbs pressure would you need for awesome performance? probably not much..

Rudeboy 07-17-2003 10:20 PM

Magnum weed wacker....
 
I think the NANO BEE turbine engine that Jesus Artes is developping should be enough to send a modified Magnum into orbit...

SJ... maybe if you made the leading edges really sharp and very strong you could do the same thing without damage to the plane...:D and actually use it as a weed whacker...lol

Unbelievable you were able to get that plane down without further damage... that wing is split almost in half...

I once did the same thing with my 100" wingspan Telemaster when landing ... the only difference was that the bush stopped my plane... it made a 180° turn on the spot and landed on the edge of the field without further damage...cool sight...

Too bad you don't have a video of this... or do you?

SJN 07-18-2003 12:22 PM

Magnum weed wacker....
 
it actualy flew fine. I didn`t notice that the damage was that bad until I landed. I was just about to take another high speed dive, when I just thought that Id better land to check her out :-)

It was only when I turned off the engine, that it glided a little worse than normal :-)

SJ.

SJN 07-19-2003 07:35 AM

Magnum weed wacker....
 
Bummer.....none in stock at the moment.....

Better fix the old one up imidietly :D

http://bornholm.adsl.dk/modelfly/fil.../Dsc00703s.jpg


Almost as good as new :cool:

http://bornholm.adsl.dk/modelfly/fil.../Dsc00704s.jpg

SJ.

Rudeboy 07-19-2003 08:00 AM

Magnum weed wacker....
 
I just can't stop looking at those pictures!

This really gives you an idea of the HUGE amount of kinetic energy that is stored in even a small plane flying at these speeds...

I don't even want to think about what happens when you hit a car or something like that... I think the engine of a Magnum at full speed can easily penetrate a car roof or something... scary...


I just finished putting a new nose on my Magnum.
And I put in a one-piece motor mount... much stiffer...
My header broke also, and in retrospect this was caused by the crappy stock engine mount that always seemed to vibrate loose.

Luckily I was able to weld (solder actually) my header back together. It should hold with the stiffer mount.

SJN 07-19-2003 10:30 AM

Magnum weed wacker....
 
dont hit your car with it....that cant be good :-)

The stock engine mount is quite bad. I thought my motor was loose, but it`s only the mount bending :-)

How did you solder it ?

is it called silver soldering or something like that ?

SJ.

Rudeboy 07-19-2003 10:48 AM

Magnum weed wacker....
 
The product I used is called TECHNOWELD... ever heard of it?

Web site:

Technoweld

This stuff basically solders anything that contains aluminium.
It is easy to work with because it melts at 430°C and aluminium at approximately 650°C.

I first had my doubts about trying to weld this thing back together, but apparently it holds... :D


Side effect of the rugged engine mount: the plane is MUCH louder, and the fuel foams slightly, but nothing excessive.

I started cutting the pipe this afternoon (header is used up :p)... I'm still gaining rpm, but I'm not going to push it since it is about 35°C down here and I don't want to fry my engine.
I can now hold the plane straight up, and if I let go, it just takes off straight up...cool... and all this on that tiny 8x8...

I'm really starting to wonder when something is going to break in this engine... A Webra was never ment to develop this kind of power...

SJN 07-19-2003 09:19 PM

Magnum weed wacker....
 
Thanks Rudeboy, Ill look into it :-)
sounds like your engine is runnig perfectly for you.


My plane is again fit for fight tomorrow :cool:
I only had trim tape to play with. I hope I can see it in the air.

http://bornholm.adsl.dk/modelfly/fil.../Dsc00719s.jpg


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