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RE: Viper Jet 2M Pointers/ tips. - 12/4/2012 6:09 PM   
RCISFUN



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From: Erie, PA, USA
Status: offline 		No posts since September, time to kick start this thread again

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RE: Viper Jet 2M Pointers/ tips. - 12/4/2012 6:16 PM   
k_sonn



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Status: offline 		I have one on order that should be here in a couple of weeks.  Plan to start a build thread once I've finished the CARF Mustang I'm working on.

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RE: Viper Jet 2M Pointers/ tips. - 12/4/2012 6:41 PM   
furycham


 

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Status: offline 		Eight months ago I had a minor crash with my Viper because for some reason the carbon tube of the elevator broke in flight causing flutter. Now she is flying better than before . Take a look at this video of the 2nd maiden flight.

http://youtu.be/E5hLXaI5KRQ

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RE: Viper Jet 2M Pointers/ tips. - 12/5/2012 8:57 PM   
sharam



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Status: offline 		I am planning on buying one of these 2M Viper Skymaster Jets!  I have read the entire thread - lots of good info in here, thanks to all of you.  This will be my first jet.  I have a quite a bit of experience flying helicopters and large scale prop planes.  My 80" span WWII Zero does ~ 130mph, so I am used to flying fast and flying "the silhouette."

What color schemes do you guys recommend?  I like the paint in the mold red and white.  I understand paint post-mold can add more weight.  

I am planning to install a 100 class turbine.

Any thoughts ore ideas will be appreciated!  Thanks in advance.



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RE: Viper Jet 2M Pointers/ tips. - 12/6/2012 1:47 AM   
RCISFUN



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Status: offline 		Hey Sharam
A 100 class turbine will be fine...

The paint out of the mold looks much better (i.e. no seam lines etc) and I can't see much weight difference.

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RE: Viper Jet 2M Pointers/ tips. - 12/7/2012 7:34 AM   
sharam



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Status: offline 		Rich,

Thanks for the reply.  Tell me about the Jet Central Rabbit please.  I am curious as to how it compares with the JetCat 100RX.

I would appreciate your input. 


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RE: Viper Jet 2M Pointers/ tips. - 12/7/2012 3:06 PM   
RCISFUN



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Status: offline 		http://www.jetcentral.com.mx/rabbit.html

22 Lbs Kero Start, you won't be sorry


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RE: Viper Jet 2M Pointers/ tips. - 12/8/2012 8:58 PM   
sharam



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Status: offline 		 Thanks, anyone else have any comments about the Rabbit?


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RE: Viper Jet 2M Pointers/ tips. - 4/19/2013 4:43 PM   
luckyflyer


 

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Status: offline 		Has anyone replaced their Viper's aluminum (12 oz) wing tube with a lighter carbon fiber tube? graph tech rc has one with a .040 wall thickness that weighs 5.2 oz

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RE: Viper Jet 2M Pointers/ tips. - 4/20/2013 7:13 AM   
luckyflyer


 

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Status: offline 		No one has even thought about doing this to their Viper?

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RE: Viper Jet 2M Pointers/ tips. - 4/20/2013 12:21 PM   
RCISFUN



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Status: offline 		Is there an issue with the Alum spar?

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RE: Viper Jet 2M Pointers/ tips. - 4/20/2013 4:07 PM   
luckyflyer


 

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RE: Viper Jet 2M Pointers/ tips. - 4/21/2013 11:27 AM   
richard.pursall@btinternet.com


 

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From: st. columb, UNITED KINGDOM
Status: offline 		Guys I need to warn you all about the clearance between the flaps/ailerons and the wing when they close.- Last July (the hottest day of the year) I had my viper set up at our club in the blazing sunshine, - turned on the rx and did the usual checks. Only to find when lowering the flaps the left one would not go back up! - it was catching on the wing!- the heat of the sun was doing its work.- I spent ages sanding down these issues on the build but obviously not enough. I then noticed the right aileron was doing exactly the same thing! - out with a scuff board and some grease and problem solved ( I thought!!) - I had a flight and it was probably my best to date - half hour later and flight No 2, - took off as normal, plenty of power then went into a right bank - as soon as I went to tuck the flaps up I knew something was wrong - there was a slight hesitation, the nose dropped and she spiralled to the ground!!! - huge explosion I lost everything! ( my worst nightmare come true!.....gutted!)

So when I went to put the flaps back home I can only assume the left one stayed stuck down which caused an aileron effect etc (Ali has confirmed this ) so be warned guys - make sure those gaps are well sanded down!
So here I am now with out a jet, ( yes its taken me all this time to recover!)- ive been in touch with Ali and im very interested in the Futura 1.9m. My only gripe with the viper was it took plenty long enough to get off the ground (p80se) - it seems the futura by all accounts might rotate a little quicker ( I would use a p100rx) but I was wondering if any of you guys out there have any experience with the futura and particularly any one with experience in flying the viper2m and the futura1.9m to give a good comparison?
Just want to get as much info as poss from everyone before I make the next big spend!

Best regards
Rich P

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RE: Viper Jet 2M Pointers/ tips. - 5/3/2013 3:41 PM   
luckyflyer


 

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Status: offline 		To the folks that have built the Viper, do you epoxy the keying slots on the rails that the turbine mounts to or is the turbine its self used to hold the rails in their keying slots?

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RE: Viper Jet 2M Pointers/ tips. - 5/3/2013 5:02 PM   
BluFox



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Status: offline 		Mark:

With the three 2m Vipers built by Bill Hatcher and myself, (make that 4) we trial fit the turbine mount rails then Hysol in place. We put aside for 24 hours. This completes the rigid bond/assembly between the two formers/bulkheads.

BTW, when installing your Cheetah, place the turbine on the rails with the name Cheetah toward the top of the fuselage. Therefore, from the bottom through the hatch, you will see the turbine but not the turbine name. Nozzle should be no more than 1" from the entrance to the metal pipe. . .no less than 3/4." This will give you optimum performance and proper cooling for the pipe.

Regards,
Eric


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RE: Viper Jet 2M Pointers/ tips. - 5/4/2013 12:10 AM   
furycham


 

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Status: offline 		This is what I did.



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RE: Viper Jet 2M Pointers/ tips. - 5/4/2013 2:10 AM   
luckyflyer


 

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Status: offline 		It seems that the bell mouth supplied by SM on my Viper is noticeably different than the other SM supplied bell mouths . The large end opening is a whopping 5.5 inches across and 2.5 inches long. I'm thinking of cutting it back some because its so wide it interferes with the mounting rails.[image]

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