I pulled the heat shrouds on my -10 in the spring and put them back on in the fall. In the summer I route the fresh air scat tube to better cool the fuel pump. The "mufflers" are fine.
I have two heat muffs, one for the front and one for the rear, but having them boh hooked up and open will drive you out of the plane 30f temps. I now have plumbed one heat shroud for both front and rear and have flown in 10f temps in light jackets.
I agree with Vic and for those building a -10 an O2 system is a must. The airspace between 12k and 18k is smoother, and a "road less traveled"
Hope this helps.
RV-7 : In the hangar
RV-10 : In the hangar
RV-12 : Built and sold
RV-44 : 4 place helicopter on order.
Last edited by Geico266 : 04-17-2011 at 05:12 PM.