Hi all,

I have a BVM bypass in medium-well condition. Had a little BBQ going on last weekend.

Is there a High-temp resin or Epoxy system I could use to lay out some carbon cloth reinforcement?
Would regular West System cut it?

Thanks,

David "Mav-BQ"

BBQ means engine was not straight or had a wet start. West systems and two ounce cloth layer or two, without a picture don't know how much cloth you will need. If you don't have west systems, 20 minute finishing resin at your local hobby shop will do it, but you have to wait two days for it to cure, and really four before you can handle it. West Systems is over night.

Too much propane was the cause. My Simjet 1200 has been acting weird lately. I never had to use a propane regulator on it before. Now I have to. I left the regulator fully opened by mistake.


I do have some overnight West, so it is good for high temp? Do you mean 2oz FG or 2oz Carbon? I have both options in my garage.
Should I glass the inside or the outside? Damage is on the inside.

I did fly the models with the BBQ'd bypass and it wasn't a problem. However I want to fix it because I think it will not take another hot start too well!

Did I mention that BVM Heat Shield Stuff works pretty darn good? Saved my airframe.

I have never seen high temp resins at a model shop, as they are specialty products designed for industrial use only. High temp resins require an elevated temperature "Post Cure" in an oven to give them their heat tolerance qualities. Some of the high temp resins that I have been exposed to in the aerospace industry required a post cure of up to 450 degrees F after the initial cure at (as I recall) of around 130 degrees F.
Just Google High temp resins, and see what you get. There should be a plethora of information available from the resin manufacturers on the web.
Overnight West Systems resin is not good for elevated temperatures.

Harley Condra
BVM REP
JetCat REP

Henry, so what kind of resin is used for the bypass? Does BV have an autoclave or something?

David

David, below is a link that should have some high temp epoxy. I have researched this in the past and if I remember they have some epoxy you might be able to use. I believe that Harley is correct though that it may need to be cured. Standard overnight resin will likely become soft when exposed to high temperatures.

McMaster Carr sells some high temp epoxy in small tubes if you only need a small amount to do a spot repair. It works well as I have used it in the past but I think it is only available in Aeropoxy size tubes. Gary




http://www.tmi-slc.com/resin1.htm