Dustyone
Well Known Member
I had a customers RV-10 in the workshop last month for some upgrades and repairs. (new windscreen and Planaround door upgrade )
This particular RV-10 is 10 years old and has flown approx 1100 hrs.
The lower cowl exhibited external heat damage and on closer inspection the heat shielding was no longer doing its job and not covering enough of the cowl.
The heat shielding had been allowed to get stained over time and was no longer able to reflect any heat.
New to me was how much heat damage there was from No1 Cylinder,the heat shield only partially covered this area.
and once the old foil was removed the cowl sub-strait crumbled away,
The damaged sections were cut away and multiple 9oz cloth was applied to the affected areas. The cowl was then cleaned and sealed with West epoxy before 1/8" Fibrefrax was applied under the new adhesive reflective foil covering all of the lower cowl.
The rest of the cowl is to be painted white after I had finished with the repairs.
So Keep those lower cowls CLEAN , Reflective foil heat shields don't reflect heat when they are dirty or oil stained.
This particular RV-10 is 10 years old and has flown approx 1100 hrs.
The lower cowl exhibited external heat damage and on closer inspection the heat shielding was no longer doing its job and not covering enough of the cowl.
The heat shielding had been allowed to get stained over time and was no longer able to reflect any heat.
New to me was how much heat damage there was from No1 Cylinder,the heat shield only partially covered this area.
and once the old foil was removed the cowl sub-strait crumbled away,
The damaged sections were cut away and multiple 9oz cloth was applied to the affected areas. The cowl was then cleaned and sealed with West epoxy before 1/8" Fibrefrax was applied under the new adhesive reflective foil covering all of the lower cowl.
The rest of the cowl is to be painted white after I had finished with the repairs.
So Keep those lower cowls CLEAN , Reflective foil heat shields don't reflect heat when they are dirty or oil stained.