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gp viper 500 - 1/16/2007 8:46:21 PM   
xandips


 

Posts: 68
Joined: 9/11/2004
From: Fort Lauderdale, FL, USA
Status: offline 		So i decided to get another viper 500... first one crashed on maiden : (

need advice on engine... I wanted a jettsport but will the viper take it??

or an os 50sx or 32 sx

any advice??

thanks
       Post #: 1

RE: gp viper 500 - 1/17/2007 2:45:07 AM   
BernieV


 

Posts: 17
Joined: 3/28/2002
From: Racine, WI, USA
Status: offline 		Why not go with a TT Pro .40? It runs well, is favorably priced and you will be able to enter 424 rulebook events if you like.

_____________________________

Bernie V

(in reply to xandips)
       Post #: 2

RE: gp viper 500 - 1/17/2007 3:47:16 AM   
xandips


 

Posts: 68
Joined: 9/11/2004
From: Fort Lauderdale, FL, USA
Status: offline 		not really interested in racing. don;t live in the us anymore... compared to the os 32 and 50, how is the tt40???
thanks

(in reply to BernieV)
       Post #: 3

RE: gp viper 500 - 1/17/2007 3:57:11 AM   
xandips


 

Posts: 68
Joined: 9/11/2004
From: Fort Lauderdale, FL, USA
Status: offline 		how bout a webra 55??

(in reply to xandips)
       Post #: 4

RE: gp viper 500 - 1/17/2007 5:02:57 AM   
kommander


 

Posts: 11
Joined: 12/20/2005
From: Newman, CA, USA
Status: offline 		What's wrong with the engine you had on the first one? I know in Texas they're using 428 motors on Vipers.

(in reply to xandips)
       Post #: 5

RE: gp viper 500 - 1/17/2007 5:54:42 AM   
vertical grimmace


 

Posts: 1145
Joined: 3/13/2004
From: ft collins , CO, USA
Status: offline 		If your not gonna race it really dosen't matter. I would choose the one that will make it balance easier.

(in reply to kommander)
       Post #: 6

RE: gp viper 500 - 1/17/2007 8:32:19 AM   
ezmo


 

Posts: 24
Joined: 6/20/2005
From: espoo, FINLAND
Status: offline
quote:

ORIGINAL: xandips

So i decided to get another viper 500... first one crashed on maiden : (

need advice on engine... I wanted a jettsport but will the viper take it??

or an os 50sx or 32 sx

any advice??

thanks


Lessons learned, what happened in maiden, what caused the crash?

(in reply to xandips)
       Post #: 7

RE: gp viper 500 - 1/17/2007 3:04:10 PM   
xandips


 

Posts: 68
Joined: 9/11/2004
From: Fort Lauderdale, FL, USA
Status: offline 		no idea... flew great but came in for landing, and about 20 ft above the runway it just pointed down... guess I came in too slow... don;t know.. lol

(in reply to ezmo)
       Post #: 8

RE: gp viper 500 - 1/17/2007 3:21:31 PM   
jaka


 

Posts: 4536
Joined: 12/11/2001
From: Upplands Vasby, SWEDEN
Status: offline 		Hi!
Webra .40 GT is the strongest running standard .40 engine available using a standard silencer and 80/20 fuel (which it trives on).
It turns a 10x6 Graupner cam prop (or old gray model ) or RAM at 14000 rpm or more , this can no other .40 engine do except Jett or Nelson.
Do not use a big heavy .50 or .55 engine.
Balance is no problem. Move servos and reciever /battery as far rearward as possible ...if requiered.
Balance should be where Great Planes suggest. Think it is 3" from leading edge.
Why not compete?? It's the most fun you can do in R/C...


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< Message edited by jaka -- 1/17/2007 3:23:47 PM >

_____________________________

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MVVS, Motul "Micro" all synthetic oil

(in reply to xandips)
       Post #: 9

RE: gp viper 500 - 1/17/2007 4:20:32 PM   
xandips


 

Posts: 68
Joined: 9/11/2004
From: Fort Lauderdale, FL, USA
Status: offline 		i would love to compete... but i live in brasil... no pylon racing here.. at least I don't know af any... im thinking the 32sx with jett pipe... maybe 120mph???

(in reply to jaka)
       Post #: 10

RE: gp viper 500 - 1/17/2007 4:22:12 PM   
xandips


 

Posts: 68
Joined: 9/11/2004
From: Fort Lauderdale, FL, USA
Status: offline 		I was running the first one with 46ax and tuned muffler... not quite as fast as I want.. engine broke on the crash... : (

(in reply to xandips)
       Post #: 11

RE: gp viper 500 - 1/17/2007 6:21:04 PM   
ezmo


 

Posts: 24
Joined: 6/20/2005
From: espoo, FINLAND
Status: offline
quote:

ORIGINAL: xandips

no idea... flew great but came in for landing, and about 20 ft above the runway it just pointed down... guess I came in too slow... don;t know.. lol


That plane is not easy to tip stall unless you pull elevator too heavily when landing, but still its very gentle move it does. Were you sure about CG was right? I wouldnt fly with new one before knowing what went wrong with old one. It is waste of time to repeat the error.

E

(in reply to xandips)
       Post #: 12

RE: gp viper 500 - 1/17/2007 8:08:12 PM   
nanu


 

Posts: 42
Joined: 5/21/2003
From: Apple Valley, CA, USA
Status: offline 		Get in touch with Darrol Cady. He went to Brazil and pylon raced out there. He has an article at his website.

www.darrolcady.com


(in reply to ezmo)
       Post #: 13

RE: gp viper 500 - 1/17/2007 8:11:01 PM   
daven



Posts: 6909
Joined: 12/7/2001
From: Andover, MN, USA
Status: offline 		Neither the 32 or 50sx will be faster than the OS .46 AX you had on there.

_____________________________

Dave Norman

klasskote.com
supertrc.com

(in reply to nanu)
       Post #: 14

RE: gp viper 500 - 1/18/2007 2:49:50 AM   
xandips


 

Posts: 68
Joined: 9/11/2004
From: Fort Lauderdale, FL, USA
Status: offline 		the 32 sx won't be faster than a 46ax??? why is that??

thanks nanu... I'll look for it over here... should be lots o fun..

(in reply to daven)
       Post #: 15

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