Skygate/CARF Viperjet
#377
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Good morning all,
I'm building a skygate viper. The kit came with a aluminum and carbon fiber wing tube. I was told the carbon fiber wing tube fits inside of the aluminum tube. I'm having in issue making this happen. Can anyone advise if they have the same setup. Also is anyone using a 160 turbine for this jet. I was considering using a jetsmunt 160 37/38 lbs. Thanks Paul
I'm building a skygate viper. The kit came with a aluminum and carbon fiber wing tube. I was told the carbon fiber wing tube fits inside of the aluminum tube. I'm having in issue making this happen. Can anyone advise if they have the same setup. Also is anyone using a 160 turbine for this jet. I was considering using a jetsmunt 160 37/38 lbs. Thanks Paul
Last edited by sportflya; 06-13-2015 at 06:49 AM.
#378
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HI Paul,
Yes the carbon tube does go into the aluminum one to strengthen it. It will fit but takes a little working. I first sanded inside edges of both ends of the Aluminum tube and then lightly landed the full outside of the carbon tube with some 400 grit wet sandpaper. That did the trick for me. Then I used some Z-poxy finishing resin thinned a bit to mate the two together.
As for the turbine, my Viper has full smoke and also electric gear and brakes which put the weight right at 36 with a full UAT. I am using a 36 lb Rhino and find it to be a really good match, even with full fuel and smoke oil load
Yes the carbon tube does go into the aluminum one to strengthen it. It will fit but takes a little working. I first sanded inside edges of both ends of the Aluminum tube and then lightly landed the full outside of the carbon tube with some 400 grit wet sandpaper. That did the trick for me. Then I used some Z-poxy finishing resin thinned a bit to mate the two together.
As for the turbine, my Viper has full smoke and also electric gear and brakes which put the weight right at 36 with a full UAT. I am using a 36 lb Rhino and find it to be a really good match, even with full fuel and smoke oil load
#388
Great video with the 140 Rene'
Flies just beautiful with that engine. You have inspired me
Paul.
Flies just beautiful with that engine. You have inspired me
Paul.
Hi,
I'm flying the Tomahawk Viper with a Jetcat P140, 34.7lbs dry, normal cutted grass field is no problem, have flown it to at 25-30° C with no power problem. Here is a short Video.
In comparison with a friend's Carf powered by Jetcat P180, we couldn't see much difference in flying, except verticals.
Maybe worth trying it.
I'm flying the Tomahawk Viper with a Jetcat P140, 34.7lbs dry, normal cutted grass field is no problem, have flown it to at 25-30° C with no power problem. Here is a short Video.
In comparison with a friend's Carf powered by Jetcat P180, we couldn't see much difference in flying, except verticals.
Maybe worth trying it.
#390
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Does anyone know the distance from exhaust of turbine to the bell mouth or pipe opening? If I used the standard distance 25mm the starter unit of turbine extends past the phenolic tube. The pipe is flush or almost flush with the fiber glass tail cone cover. Has anyone had simular issues
Last edited by sportflya; 07-17-2015 at 01:42 PM.
#397
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Well guys Im all done with build... still no maiden due to bad weather. Final weight is 34 lbs dry using at kingtech 180. I had to add 12oz into the nose and add pilot(7oz) to get it cg. The plane is about 12grams nose heavy. Will this be ok? Any thoughts? Thanks Paul
Last edited by sportflya; 08-03-2015 at 06:35 PM.
#398
Join Date: Dec 2004
Location: Harpenden, UNITED KINGDOM
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I started with the CG set on the rearmost hole (nearest the joiner tube) of the ply setting guage and that required 4oz of lead, but I've since removed all the lead and I guess the CG is now close to the centre of the joiner tube. At this CG, it suits my flying style and requires very little down elevator when inverted.
#399
Dave
Last edited by Dave Wilshere; 08-04-2015 at 03:14 AM.