coating with BVM heatshield
 

I have a Skymaster hawk. I am going to coat the tail section with BVM heat shield.

QUESTION IS.......

which is more popular?????

coat the inside of the jet around the exhaust pipe area?
or do you coat the outside of the tail pipe itself, to keep all the heat inside of the tail pipe?

Mark

RE: coating with BVM heatshield
 

do not coat the tailpipe it will not cool properly. coat all your wood and f/glas parts aft of eng. min 2 coats and at least a 3rd on upper fuse surfaces, heat rises .note any exposed servos should also be covered w/ a heat blanket . on your leads cover w/heat tape then also coat w/ heat sheild

RE: coating with BVM heatshield
 

Ditto

Mr. Kerr hit it on the money.

Ian

RE: coating with BVM heatshield
 

Does anyone know what the commercial product "heat sheild paint" is?


Or is this something they dreamed up and had produced?

I've never used the stuff, just curious.

RE: coating with BVM heatshield
 

it is a water base ceramic paint, ck w/ local ceramic /potery types

RE: coating with BVM heatshield
 

Hi,

I have one can of BVM Heat Shield Paint which I bought long time ago and also tested it with two coats onto Balsa woods.

I concluded myself after burning the coated area with small torch flames and found that the surface shall not be combusted but after removing the paint the balsa wood was sooted. This mean that the paint shall not protect heat itself properly but just good for fire speading or iginiting for a few seconds or even munites.

If we imagine it for FRP (just epoxy or polyester resin), it can not help to protect the deformation from the heat since turbine heat from wet start (mainly the reason to put heat sheild, I guess), since paint can just deter the combustion with materials from fire contact, not blocking the heat itself. Thus, I would guess the heat blanket will be better for protection inside but still not perfect until several layers on it.

BVM heat sheild paint will be useful for wood part or combustiable materials to deter from burning. In case of tail corn, the steel sheeted one is the best one, I guess...


Regards,

Jai Young Shim