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RE: TF GS P47 Build - yeah another bloody one!! - 5/2/2012 10:39 AM   
dubs1946


 

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Status: offline 		I had 2 more flights today with my P47 with a 3W85 in and just of of interest i put a fish scale on the tail to check the thrust.
It has a Chinese 26X10 prop and was turning just around 6100 RPM and put out 18KG of thrust on the fish scale and in old money that's near to 40 Pounds of thrust.
The aircraft weighs 35 Pounds dry so a good ratio.
Dave.

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RE: TF GS P47 Build - yeah another bloody one!! - 5/2/2012 12:16 PM   
PSJDBF


 

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Status: offline 		Hey Dave long time since we crossed paths, I,ve fitted a GT80 to my Zero and mounted it vertically, made up some exhaust headers & got some flexi exhaust tube so I could have them exiting in a scale location, also did the electronic ignition mod with plug adapters so I could use the CM6 plug/HT boots which allowed me to cowl the engine with out cutting it up.
I,m running a hover 22X10 at 7400 RPM, only two flights done so far & really happy with the engine, no vibration very smooth throttle response & really pulls the Zero through the air.
Loaded a vid on utube of the first flights if you havn't seen it, second flight I opened the GT80 up & she was moving out, alittle deceiving on the vid as theres not a lot in the vid to reference the speed off (alot of flat red dirt out here ), But another guy filmed it on his iphone & you get a better sense of the speed it was doing.
Cheers Steff.

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RE: TF GS P47 Build - yeah another bloody one!! - 5/3/2012 2:59 AM   
Peter_OZ



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Status: offline 		mate I can relate to the speed element. I have the 21x12 mejink however you spell it and it really unloads coming down hill. I am actually amazed at just how fast it is going when it burns past, have actually started pulling back to 1/2 throttle as I enter the bank so i am not overstressing the airframe or likely to cause a high speed stall.

No idea what static thrust I am getting, have a digital fish scale so would need to hook that up to the tail and measure it. Though I am very happy with 7500 rpm on the ground.

Very happy with the GT-80.

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RE: TF GS P47 Build - yeah another bloody one!! - 5/3/2012 4:09 AM   
dubs1946


 

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Status: offline 		Hi Steff and Pete, i must say i love the GT 80.
The 3W works out about $1100 by the time you have bought the overpriced silencer.
The trouble with 3W is everything is overpriced.
I stuffed it in big time when a regulator burnt out on my TA152 and a new crank and rod was needed with Erny's input turned out to be $350.The ignition was quoted at over $200 stupid prices so i bought a Rexell for $60 instead.
Also i have found out that the DLE 55 silencer fits as well.That,s what i have fitted to my Sea Fury
What does the GT80 sell form and who is the seller?
It would be good to have a link to that Video Steff.
Where did you get the headers from on your exhaust and what is the black stuff that is joining the flex pipe and where did you get the flex pipe from.?
Dave.

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RE: TF GS P47 Build - yeah another bloody one!! - 5/3/2012 4:17 AM   
apalsson



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Status: offline 		Steff, I like the setup in your Zero and how you oriented the engine
I have the MVVS80cc in mine. Works well with a 3-blade 26x10. These are very nice flying planes!
Planning to swap it out for the 80cc version with a built in starter!



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RE: TF GS P47 Build - yeah another bloody one!! - 5/3/2012 5:15 AM   
Peter_OZ



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Status: offline 		well at least I now know how to spell Mejzlik!!

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RE: TF GS P47 Build - yeah another bloody one!! - 5/3/2012 5:19 AM   
apalsson



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quote:

ORIGINAL: Peter_OZ

well at least I now know how to spell Mejzlik!!


Good man Pete !

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RE: TF GS P47 Build - yeah another bloody one!! - 5/3/2012 6:56 AM   
Peter_OZ



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Status: offline 		thanks mate. flick me that prop price list when you get a moment? Did that carb get away?

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RE: TF GS P47 Build - yeah another bloody one!! - 5/3/2012 7:28 AM   
PSJDBF


 

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Status: offline 		Hey Dave , the flexi pipe was from Christian Traders, the black stuff is a product called rescue tape it is a silicone based tape that is fuel & acid proof & rated to 260 Deg C I have about 1.5 " of header inside the flexi pipe so more of a back up ..first used gasket sealer on the pipe & then the rescue tape as a back up & to help with flex vibration etc.
I made the headers up myself using some aircon fittings from work, at first thought they may restrict the flow a little but are working perfectly.
The vid is a little over the top as I was pretty excited to get this one up, but if you forward to the half way piont you'll catch the second flight. .
Cheers Steff.


http://www.youtube.com/watch?v=l9fvZISYceQ&list=UUQ5irRWxnwwtKDK-oncswKw&index=5&feature=plcp




http://www.christiantraders.com.au/

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RE: TF GS P47 Build - yeah another bloody one!! - 5/3/2012 8:57 PM   
apalsson



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quote:

ORIGINAL: Peter_OZ

thanks mate. flick me that prop price list when you get a moment? Did that carb get away?


Carb should be with you by now. Hit the post last Monday

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RE: TF GS P47 Build - yeah another bloody one!! - 5/4/2012 3:45 AM   
dubs1946


 

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Status: offline 		Him Steff, good fun beginning to the video, plenty of go in that motor and it looks like you nothing fell of.
Congratulations.
Dave.

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RE: TF GS P47 Build - yeah another bloody one!! - 5/4/2012 6:39 AM   
Peter_OZ



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Status: offline 		thanks Ari

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RE: TF GS P47 Build - yeah another bloody one!! - 5/5/2012 8:14 AM   
Peter_OZ



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Status: offline 		did some work on the dummy antenna today. Needs a little fine tuning (no pun) and glassing. then have to devise a way to mount it so it is removable.

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RE: TF GS P47 Build - yeah another bloody one!! - 5/5/2012 9:56 AM   
apalsson



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Status: offline 		Great workmanship Pete!

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RE: TF GS P47 Build - yeah another bloody one!! - 5/5/2012 10:36 AM   
Peter_OZ



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Status: offline 		thanks mate. Tis but a twig!

P51D is airwirthy again after fitting a new fuel tank after the last one split. sheesh and that tank was only like 25 years old. c'mon Dubro get your act together hehe

Still working on the gear door for the seafury. Sand back the filler tomorrow, hit it with some paint then refit it.

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RE: TF GS P47 Build - yeah another bloody one!! - 5/6/2012 9:12 AM   
Tseres


 

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quote:

ORIGINAL: Peter_OZ

did some work on the dummy antenna today. Needs a little fine tuning (no pun) and glassing. then have to devise a way to mount it so it is removable.


Nice looking antenna. Anxious to see how you make it removable.

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RE: TF GS P47 Build - yeah another bloody one!! - 5/6/2012 10:28 AM   
apalsson



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ORIGINAL: Tseres
Nice looking antenna. Anxious to see how you make it removable.


Hacksaw?

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RE: TF GS P47 Build - yeah another bloody one!! - 5/6/2012 2:05 PM   
Peter_OZ



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Status: offline 		no mate it is called a foot! Oopppssss

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RE: TF GS P47 Build - yeah another bloody one!! - 5/6/2012 3:56 PM   
glazier808



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Status: offline 		You guys use your feet for everything down there....even football isnt football there lol...

"hey, you all just back off! Pete's gett'n something done here!"

Pete,

To make mine removable, I used an 1/8th inch dowel, a carbon fiber tube with 1/8 inner diameter, and a servo screw.

- cut the wood dowel. (this piece goes into your antenna)
- cut the carbon fiber tube a scant(technical term)longer.
- insert carbon fiber tube in fuse where antenna is needed.
- I forgot to say, that you should drill a pilot hole in the end of the dowel for the screw.
- use screw to hold. This hopefully is easy to access. If not you can run the carbon fiber tube through the fuse allowing you to put the securing screw on from the outside.

Casey

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RE: TF GS P47 Build - yeah another bloody one!! - 5/6/2012 11:02 PM   
Peter_OZ



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Status: offline 		Casey,
mate you have been hanging around aussies too long. Your sounding like a smart ar se hehehe

My thoghts on mounting it are thus:

- antenna is roughly retangualr at the base
- glue a hard balsa block about 1/2" thick under where the antenna mounts on inside surface of fuz
- then take a piece of thickish (another technical term) brass strip, cut a suitable slot in base of antenna then glue the strip into said slot
- make a corresponding slot in fuz where antenna mounts down into the balsa block but make it a tight fit
- antanna is secure and easily removed

That is my basic desgn, I may tweak that as I go on.

Cheers
Peter

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RE: TF GS P47 Build - yeah another bloody one!! - 5/7/2012 12:03 AM   
rt3232


 

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Guys

I like both ideas.

But Pete I fhink I would once you have the slot right CA that bugger and re sand or use a machine fils to clean it up, for final fit .

Cheers bob t

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RE: TF GS P47 Build - yeah another bloody one!! - 5/7/2012 1:08 AM   
Peter_OZ



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Status: offline 		yes mate great idea

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RE: TF GS P47 Build - yeah another bloody one!! - 5/7/2012 1:02 PM   
Tseres


 

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quote:

ORIGINAL: Peter_OZ

Casey,
mate you have been hanging around aussies too long. Your sounding like a smart ar se hehehe

My thoghts on mounting it are thus:

- antenna is roughly retangualr at the base
- glue a hard balsa block about 1/2'' thick under where the antenna mounts on inside surface of fuz
- then take a piece of thickish (another technical term) brass strip, cut a suitable slot in base of antenna then glue the strip into said slot
- make a corresponding slot in fuz where antenna mounts down into the balsa block but make it a tight fit
- antanna is secure and easily removed

That is my basic desgn, I may tweak that as I go on.

Cheers
Peter


That's all fine and dandy. You know Bob want's to see some pictures.

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RE: TF GS P47 Build - yeah another bloody one!! - 5/7/2012 2:24 PM   
glazier808



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Status: offline 		"mate you have been hanging around aussies too long. Your sounding like a smart ar se hehehe"

From you sir.....


Thats a complement!

Casey

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RE: TF GS P47 Build - yeah another bloody one!! - 5/7/2012 3:37 PM   
PSJDBF


 

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Status: offline 		Hey peter had a dead stick on the Gt80 yesterday very scary...Not alot of crap in the filter but because it's a cartridge type enough I guess to snuff out two cylinders.
posted a short vid of it on utube ..the sound you dont want to hear from your 80cc.
Chears Steff.

http://www.youtube.com/watch?v=sy9zck6JHqM&list=UUQ5irRWxnwwtKDK-oncswKw&index=1&feature=plcp

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