Well one could go to the extent of installing a RAT (Ram Air Turbine) to provide current for critical equipment.

 

See contact issue 101, the junior ace featured in it as something similar but used as a primary source of current.

 

Just install it like the big boys do… inside the cowls with a way to drop it outside in the airstream…

 

 

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 Dustin Lobner
Envoyé : 27 janvier 2011 08:21
À : Rotary motors in aircraft
Objet : [FlyRotary] Re: Ignition systems

 

The magnetos were an example, I was hoping for something like P-mags which are electronic ignition but don't require external power to operate (tiny little alternator built in).  Was the "solid state dang near bullet proof" that you talk of Tracy's unit?

I know how to do a dual-buss setup, with dual alternators, dual batteries, etc.  If I can avoid the weight, that would be nice, hence me asking.

Regarding having an hour of flying time after electrical failure, what if I want more than that?

Dustin

On Wed, Jan 26, 2011 at 11:33 PM, Dave <david.staten@gmail.com> wrote:

On 1/26/2011 11:01 PM, Dustin Lobner wrote:

Hi Everyone,

I was just wondering, what is available for ignition systems for a Renesis?  I was hoping that there would be something like a magneto or a P-mag that would still work if the electrical system failed.  I'm thinking about using Rotec's TBI fuel injection system (mechanical fuel injection) that can work gravity fed if need be.  Only thing I'd need then would be a self-sustaining ignition system and things would be looking good.

Dustin

Let me understand.. you want to trade a solid state dang near bullet proof ignition system for something that has less energy and requires regular overhaul and servicing?

Unless you are installing in a high wing, gravity fed will be a non-starter (even as a back up).

You would be better served with a dual battery redundant electrical system. Some folks are even running permanent magnet generators. If you lose an alternator/charging source, you can shed dang near all your load, and have over an hour flying time to get on the ground..

Chris's plane has dual battery, independent busses, and dual alternators. That setup is less failure prone than a mechanical device that WILL require overhaul or replacement every 500 hours or so.

To answer your question, I dont know of ANYONE running mags on any auto conversion engines at all. Just lawnmowers and lycomings/continentals/franklins.

Dave

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