ORIGINAL: ViperJet1



Glad to see this thread Ali created is still hangin on!!!

I believe the CG is at the wingspar center. Sliding it front to back is your pref. But obviously a bit different with every model Viper due to resin and paint. also you may want to put a flap stop in to prevent the flap from tilting upwards in transit. A small piece of hardwood at the root prevents it from flap from gouing backwards and breaking. As for the gap seals sticking, that sucks. That happened in my first flight. It wasn't enough however to send the plane out of control for me. I just adjusted with aleron. Try a light heat gun on them and push down then heat and push down. Carefully though, you can melt the plastic very easily if your not careful. My new viper seems to be much better with these gap seals.


Many of you know me as ''The guy who stalled his viper in a loop'' and sent it into the woods failing to even apply throttle on the downside. Yea , I know. I'm better than that. I just flew carelessly that day. Never the less it did not discourage me from getting another and th build is going very smoothly this time since it is my second. Planning on doing all the goodies I had done before. I see they made some changes in the kit .....probably to save cost and weight. As usual, a few things were of concern. but I am proficient now at building and able to understand a bit more than before what needs to be done.
There is however one thing that I never asked anyone on my other jet and just figured out a fix on my own. The engine if you noticed mounts on a slant downwards so that the exhaust cone points downward slant and was of course the cause of me needing to replace the tailpipe twice due to a hotspot build up. After the second of course is when I noticed the problem. The best solution I came up with at the time was a doorstop looking shim under each side of the engine mount one on each side. Thinking a bit more on this one I thought maybe if I notch out the front former a bit below were they have it notched to slide trhe engine in that would do the trick.
Why is this like this and what did some of you do to fix this. The first Viper I had was powered by Evo, this one will have a merlin 160. Both seem to have the same problem with the engine mount.</p>