More heat !!!

[49clipper]

I added the SS scouring pads and had no increase in heat but ended up with a smell of burnt something, that took quite awhile to trace back to the muffs. Took it back out and the smell disappeared. Smelled like burnt wiring. Only smelled on taxi and startup. But scares you.
Now I am blocking the aileron hole.

[kevinh]

Originally Posted by Darin Watson

Did the scour pads, helped quite a lot, though don't get too aggressive with limiting airflow as it may be OK when really cold, you may have an issue in summer even though you are dumping the air.

Yep - I do my 30%ish reduction with a bit of aluminum tape over the inlet (above cyl #3). I put the tape on in winter and take it off the rest of the year.

[kevinh]

Originally Posted by C-GRVT

Vetterman offers a system with mufflers. I was interested for noise reduction, when I spoke to him he said that they also provided substantially more heat than the muffs. I am sure you could add them to an exisitng system (some mods required).

Yep - If I was building now I'd definitely get the muffler version (wasn't an option when I was building). Two good reasons:

• Better heat
• Protects my airport from noise complaints (good for neighbors and good for me)

[lockeed]

Apart from the usual heat coming from the exhaust, is there a heating solution which would come from oil, of the actual heat from the engine? Maybe picking up heat from the oil cooler or something?

[Neal@F14]

Originally Posted by RVG8tor

I have not hooked up my heat muff yet, but how does limiting air going into the heat muff help make more heat.

Slow down the speed at which air flows thru the muff to give it more time to pick up heat. If air flows thru too quickly, it won't absorb much heat.

[Jerry Wilcox]

I've had a muffler/heat exchanger on all of my RVs. Decided from the start that I didn't want straight pipes and did want good cabin heat. I had intended to make these to sell but other projects got in the way and it's just too labour intensive to manufacture these on your own. The muffler is more of an expansion chamber than muffler as there is nothing inside but it does serve the purpose of changing the sound and giving plenty of surface area for cabin heat. Performance seems fine with all of the numbers what they should be. Doubt it very much but if there's anyone ambitious enough to build there own and want the parts list and some info on this exhaust just send me a note. I won't build you one but your welcome to try. Will not fit on a 4, I've had them on 6 6A and 8s.
Jerry
[IMG][/IMG][IMG][/IMG]

[Dan B]

I have the Vetterman mufflers. I have no problems with getting enough heat.

[SmilingJack]

My heat is good above 40 degrees, when I see 35 degrees or below, It really doesn't do much.

I ordered 2" to 1.5" reducers from "Plane Inovations LLC" and 1.5" ducting from Spruce.

I've heard this helps and will give it try.

[lockeed]

Instead of pulling cold air from the outside and route it trought the exhaust muff, wouldn't it be better to pick up the air from inside the CABIN (edit) and simply use an electric fan to push it along?

[kevinh]

Originally Posted by lockeed

Instead of pulling cold air from the outside and route it trought the exhaust muff, wouldn't it be better to pick up the air from inside the cowling and simply use an electric fan to push it along?

I don't think I'd want the little bits of oil vapor (and possibly exhaust) in my lungs.