has anybody tryed glow/gas yet (no spark plug)

[bcredneck]

no its not. Glow is totally different diesel can run off compression alone glow needs compression heat and a chemical reaction to fire

 

[bcredneck]

 

[Deleted member 12676]

I'd like to see a graph of ignition timing vrs RPM

 

[bcredneck]

that parts really complicated to find out I do know that the timing advances over the rpm range quite a bit since the faster the piston comes up the earlyer the motor fires but at idle they fire after tdc

 

[Steve Best]

I'd like to see a graph of ignition timing vrs RPM

Ha! Jag, there is no ignition. It self ignites. You vary the compression and nitromethane to set the timing.
You have to have an ear for detonation, some guys can hear it in the exhaust note and set the engine up that way.

The Army is using a kit to convert Rotex prop drone engines to burn diesel in a similar manner.
The head has a heat holding steel ring and glow plug to get started. Sonex? I cannot remember the comany.
Looks like this: http://articles.sae.org/9939/

And pistons like this: http://www.gizmag.com/go/4695/

This obviously is for a 4 stroke.
Ah! Here it is: http://sonexresearch.com/licensing/3743059

Steve

 

[GreenMantis]

Model glow engines are technically 2 stroke diesel engines. Glow fuel is nitromethane. Nitromethane can run in most engines, I think diesels, too, since they have glow plugs to get it going, just like the glow engines do. Diesels come in 2 stroke and 4 stroke, as do gasoline engines, glow fuel should work in any of them, with the right jetting.