Greg,

 

It looks like the entire weight of your turbo, intercooler, wastegate, and all associated tubing is being supported by the exhaust flanges attached to the rotary exhaust ports.  If there is no other support for these items, you should expect the exhaust pipes to break at the flanges in short order.

 

Bob Rogers

N62BT

Mustang II with 13B Turbo

 

 

----- Original Message -----

From: Jeff Whaley

To: Rotary motors in aircraft

Sent: Thursday, December 17, 2009 5:05 AM

Subject: [FlyRotary] Re: Cabin Heat (Was Oil Cooler)

 

Greg, did this exhaust guy elaborate on why it might not be a good idea?

Why can’t we move the heat muff further from engine to where temps are similar to Lycoming – use flex-stainless tubing for ducting?

Jeff

 

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Greg Ward
Sent: Wednesday, December 16, 2009 1:32 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Cabin Heat (Was Oil Cooler)

 

Hey Mark;

We've been looking at the same things with our install.  We talked to our exhaust guy, and he feels that with the exhaust temps that these rotaries have, that it might not be a good idea, (the muff).  Next step was hot water, plumbing, and a heater core inside some where, which was sort of a negative idea.  We kept all of our cooling lines exterior, so that a coolant leak wouldn't happen inside at about 10K feet, and 200+ knots, not a good scenario.  J.C. Whitney has a small electric heater that has some possibilities, so we are looking into that and some other ideas.

Greg Ward

Lancair 20B N178RG in Progress

----- Original Message -----

From: Mark Steitle

To: Rotary motors in aircraft

Sent: Tuesday, December 15, 2009 1:41 PM

Subject: [FlyRotary] Cabin Heat (Was Oil Cooler)

 

Jeff,

I'm considering going to a heat muff since there is sooooooo much exhaust heat that's just going to waste.  I was going to incorporate it into the heat shield of my newest muffler design.  Of course, I'll need to add a CO detector in the cabin for safety.

 

Mark

On Tue, Dec 15, 2009 at 3:24 PM, Jeff Whaley <jwhaley@datacast.com> wrote:

Well with 3 coolers already, I didn’t want to add a heater core and all the plumbing – I may move my scavenge point from oil cooler to water radiator as it is below the engine (uphill for warm air) and closer to the firewall (fewer corners to turn). I picked the oil cooler because at the time my oil temp was higher than water temp – now it’s the other way around … also the outlet of oil cooler as installed is less likely to get contaminated with exhaust fumes.

Jeff