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GP Viper rear stabiliser bolts

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GP Viper rear stabiliser bolts

Old 02-20-2006, 03:27 PM
  #1  
jaka
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Default GP Viper rear stabiliser bolts

Hi!
I want to get rid of the steel bolts that holds the stabiliser on the GP Viper and replace them with nylon ones.
Can anyone help me with the dimension...it looks to be some kind of ancient inch size bolt .

GP..metric pleeease...!!

Regards!
Jan K
Sweden
Old 02-20-2006, 06:39 PM
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Default RE: GP Viper rear stabiliser bolts

8-32 SAE threads
Old 02-20-2006, 11:39 PM
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rmenke
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Default RE: GP Viper rear stabiliser bolts

Better keep metal bolts on that thing in addition to glueing things down once you know its going to fly streight. Some additional streingth at the tail end also in order. Go to the Q-500 threads and look this airframe up. They seem to loose their tails very easially.
Old 02-21-2006, 12:52 PM
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jaka
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Default RE: GP Viper rear stabiliser bolts

Hi!
Where could I get nylonbolts that size...countersunk.
I have asked Dave Shadel but he could not help me.

Regards!
Jan K
Sweden
Old 02-21-2006, 01:04 PM
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djlyon
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Default RE: GP Viper rear stabiliser bolts

www.microfasteners.com

http://www.microfasteners.com/catalo...cts/NYLNBF.cfm
Old 02-21-2006, 01:33 PM
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Default RE: GP Viper rear stabiliser bolts

the other alternative is to put release agent around the bolts and epoxy them in to the correct positioning- this will then allow for removal at some later stage. why do you want to change to nylon bolts if they are hard to get? trevorh[sm=bananahead.gif]
Old 02-21-2006, 02:52 PM
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Ed Smith
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Default RE: GP Viper rear stabiliser bolts

Jaka,

I do not know what size you have right now. I screw my tail on with US size 6-32 socket head cap screws. That would be equivalent to an M3,5 x 0,6 screw.

Ed S
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Old 02-21-2006, 03:55 PM
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Default RE: GP Viper rear stabiliser bolts

Wow, nice tail Ed.

when the last time you heard that, big guy?
Old 02-21-2006, 04:40 PM
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Default RE: GP Viper rear stabiliser bolts

ORIGINAL: splatt

Wow, nice tail Ed.

when the last time you heard that, big guy?
Especially from another guy
Old 02-21-2006, 05:46 PM
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Default RE: GP Viper rear stabiliser bolts

We all know Jesse is a little "unstable"

Whats the over/under on transmitter smashing this year?

Ohhh, thats mean.

later, see you all in Phoenix, that is, those that are going...
Old 02-21-2006, 06:36 PM
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Default RE: GP Viper rear stabiliser bolts

all depends on the judging , might want to move up to a 9Z too, ,,, that will stop the hissy fits.

cheap transmitters just beg to be smashed sometimes ..
Old 02-22-2006, 02:53 PM
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jaka
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Default RE: GP Viper rear stabiliser bolts

Hi!
Well! My Viper is tail heavy so I want to get rid of as much weight as possible.'

Regards!
Jan K
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Old 02-22-2006, 05:22 PM
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Default RE: GP Viper rear stabiliser bolts

What would be the best way to shim a tail that is out of level? I was thinking about shimming to correct level and then mixing microballoons and epoxy to pot or "mold" where it sits. Sound good?
Old 02-22-2006, 05:53 PM
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Default RE: GP Viper rear stabiliser bolts

potting is fine, on my Viper I just used a little 64th ply and slipped it under.

Speaking of tails, I guess Lanier has redone the Predator with internal linkage for the tail feathers.

The Seekers I'm making now I'm trying to get the leading edge to match the edges of the fuse as to eliminate as much drag as possable.

Old 02-26-2006, 11:10 PM
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Default RE: GP Viper rear stabiliser bolts

I'm new to the Viper. Why not epoxy the tail in place once it's test flown and adjusted properly?

270
Old 02-27-2006, 11:07 AM
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djlyon
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Default RE: GP Viper rear stabiliser bolts

lots of folks do just that.
Old 02-27-2006, 01:07 PM
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Default RE: GP Viper rear stabiliser bolts

Gluing the tail is a good way to go. The tail still needs the reinforcement suggested here and other places but simply gluing the tail will make it stronger and lighter than the original setup. While making the changes, you could also remove some of the excessive plywood and blind nuts back there. With just the screws, the tail is still firmly attached to the part of the fuse. that breaks off.

Roger S.
Old 02-28-2006, 04:55 PM
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Default RE: GP Viper rear stabiliser bolts

I could not find bolts long enough countersunk bolts so i filled the the holes and redrilled them so there is a flat surface for my nylon bolts. Put 1/4-20 on wing as well.
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Old 02-28-2006, 11:35 PM
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270win
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Default RE: GP Viper rear stabiliser bolts

So it's the fuse that is prone to fail in the Viper? I just got one so any help on that issue would be good to know.
I'm looking at a Webra GT50.... it's lighter than the 40 with more power.
I have a scat cat with an os 46 SF/ tuned pipe but I want more speed.

270
Old 03-01-2006, 12:50 AM
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Default RE: GP Viper rear stabiliser bolts

Yes, the fuselage seems to be the weak part in the tail. This has been covered several times before so if you do a quick search, you'll find lots of Viper info here.

Roger S.

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