Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

My summer proyect speed

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Old 09-06-2005, 08:29 AM
  #1  
AntonioE
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Default My summer proyect speed

Hi all,
Some one suggest me that I have to put this post here.Ok, letĀ“s go.
This plane have to win some WESTON MAGNUMS.
This is my new speed plane.
The characteristics:
Wing span 511.81 in
Length 374.80 in
weigth 52.91 oz
engine MVVS .04 Q-500 with exaust.
prop 9x6 APC

What do you think about the plane.
I donĀ“t Know how fast will be, some suggest?
I need solve the mistakes you can see in it before fly it, some suggest?
Thanks.
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Old 09-06-2005, 10:58 AM
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patterndreamer
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Default RE: My summer proyect speed

if your specs are right the government should be contacting you soon. 511 in at 52 oz.... lol just kidding. It looks like a homebrew quickie to me i don't know about you guys.
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Old 09-06-2005, 03:25 PM
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Default RE: My summer proyect speed

i think thats a big table...
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Old 09-06-2005, 08:34 PM
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Default RE: My summer proyect speed

Well... one suggestion is, if you want to beat Magnums, get a West engine... because you will never beat a properly decked out Magnum with the MVVS Q500 engine... And cetainly not with a 9x6 prop on it.
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Old 09-06-2005, 09:49 PM
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Default RE: My summer proyect speed

Nice job on the plane, ANTONIO[8D]! I'll bet that plane goes pretty good with an APC 8x8. I have no guess for speed, but I'm sure you will have fun with it!
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Old 09-07-2005, 03:00 AM
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Default RE: My summer proyect speed

Hi all.
Balsa, yes the table is very big
The Magnums are running with a WEBRA .50, the West engines have many problems becouse all of them are brakeing the cilinder. Maybe it has some construction deffect.
IĀ“ve seen the MVVs .40 Q-500 running since 18000 rpm with a 10x6 prop, I think it was adapted to do it, but itĀ“s very impresive data, isnĀ“t it?
Combat IĀ“m thinking to use many props to find the perfect one, thanks for your recomendation, iĀ“ll prove it.
Thanks all for your help.
Ah! only one thin more, the AIRFOIL itĀ“s the MH-24.
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Old 09-07-2005, 07:15 PM
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Default RE: My summer proyect speed


ORIGINAL: AntonioE


The Magnums are running with a WEBRA .50, the West engines have many problems becouse all of them are brakeing the cilinder. Maybe it has some construction deffect.
IĀ“ve seen the MVVs .40 Q-500 running since 18000 rpm with a 10x6 prop, I think it was adapted to do it, but itĀ“s very impresive data, isnĀ“t it?
West engines breaking the cilinder? That's the first I've heard of it...

18000 on a 10x6...? That is impressive indeed. You will be lucky to get that rpm on a 9x6 IMO...
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Old 09-08-2005, 06:15 AM
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Default RE: My summer proyect speed

Yes Rudeboy, I think so too, but IĀ“m going to lookfor the photography and IĀ“ll put here.
About the west engines, itĀ“s realy true, but not all the west engines has the same problem, IĀ“m refearing to the .50 maked specialy for this plane.
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Old 09-08-2005, 09:06 PM
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Default RE: My summer proyect speed

I know you are.

The only real problem I had with mine was a broken piston pin retainer clip... that took out a piston and liner set... never had a problem with it after fitting a new P+L set...
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Old 09-09-2005, 05:19 AM
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Default RE: My summer proyect speed

Hi Rudeboy.
The piston pin is on guaranty? If weston changes freely the damage pieces and solve the problem, iĀ“ll go and bougth one of them.
How many time have you the engine?
ItĀ“s true that the weather here itĀ“s more hot than there, and could be this the problem. I have hear too here the same problem you have.
May be the new engines have no problems like olds.
In fact, I think itĀ“s a very expensive engine to fly 2 or 3 times, and change the P+L, isnĀ“t it?
How many time are you using the new P+L without problems?
How many rpmĀ“s arrives yours?
What prop are u using?

Thanks.
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Old 09-10-2005, 11:20 AM
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Default RE: My summer proyect speed

Antonio,

Whoever said the engines only run 2 or 3 times before breaking is lying.
Mine had many, many flights on it before the retainer went out. And it has many more on it with the new P+L set. I don't know how many flights I put on my Magnum... all I can tell you is that I flew that plane a lot.

I never bothered to try to get the engine fixed under warranty... I just ordered the parts I needed, since I figured that would be faster than sending the engine to Weston to have it fixed. I suppose they would have fixed it free of charge, since this was clearly a warranty case.

I was using an APC 8x8 on my Magnum, it was doing about 20500 rpm on the ground with that prop (peak).
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