flyrotary@lancaironline.net Mailing List Archive

Eric,

I installed a small car heater core with a fan in the noze of my Glass Goose and it works just fine. The cabin is very well sealed, no free air flow, it has to be, it is an amphibian, I want no water in there either. So it does not need much heat. I use the engine coolant and a hand operated valve in each line (for safety reasons), actually I use one of the valves to control the cabin temp. When the coolant temp gets below 150 F. I get no heat. I have no coolant thermostat on the engine so I control the air flow through both radiators (coolant and oil). Being in Edmundston, New Brunswick, it gets cold. Most of the heat from the heater goes to the defrost where it is the most important.

The first time I build something I make it a point to make it as simple as possible. The next time around I always realize it can be simplified!

Rino Lacombe

Renesis powered GlassGoose

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

From: Eric Deslauriers

To: Rotary motors in aircraft

Sent: Monday, September 13, 2010 12:19 PM

Subject: [FlyRotary] New rotary Cozy IV builder

Hi all,

First post ever, as I indicated, I’m at the start of this long road, building a Cozy IV. Being in Montreal, I’m planning on having a radiator in the nose for heat.

My question is: what would be the better option, plumbing engine coolant to the nose or engine oil? What in your opinion would result in a lighter/safer install?

Thanks,

Eric Deslauriers, CMA

Directeur principal / Senior Manager

Juricomptabilité et évaluation d'entreprises / Forensic accounting and business valuation

Demers Beaulne S.E.N.C.R.L.

1100, boul René-Lévesque Ouest, 20ième étage

Montréal (Québec) H3B 4N4

Téléphone : (514) 878-0290

Mobile : (514) 887-2136

Télécopieur : (514) 874-0319

mailto:edeslauriers@demersbeaulne.com

http://www.demersbeaulne.com

De : Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] De la part de Al Gietzen
Envoyé : 13 septembre 2010 10:19
À : Rotary motors in aircraft
Objet : [FlyRotary] Re: Radiator cap - system pressure

Chris;

More pressure doesn’t translate to more cooling, but it does increase the temp at which it will boil, and reduce the probability of cavitation in the pump. And recognizing that pressure caps are differential pressure valves (the absolute pressure on the coolant decreases with altitude), it’s good to use a cap with a relatively high pressure, maybe about 25 psi. I’d also suggest that the plumbing should be such that the pressure cap is on the inlet side of the water pump.

Probably the first thing affected by higher pressure would be coolant system hoses. If you use good quality hoses, and change them every few years or 100 hours, pressures up to 30 psi should not be an issue.

Al

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Chris and Terria
Sent: Monday, September 13, 2010 2:56 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Radiator cap - system pressure

Gents,

What pressure caps are you running with? What maximum should be used? I currently have a 16 lb cap, but have found ones up to 29 – 31 lbs. I know more pressure means more cooling, but is there a maximum limit before hurting the engine?

Chris

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