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RE: The gadget for converting glow to diesel - 12/30/2012 6:19 PM   
brokenenglish


 

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From: Amboise, FRANCE
Status: offline 		Thanks Earl, I didn't know this thing existed. I suppose it fulfils the same purpose as the plug supplied with the Enya 4-stroke diesels, but is a bit adjustable for use with different engines...
But I don't understand why anyone would want to run a modern four-stroke as a diesel...

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RE: The gadget for converting glow to diesel - 12/30/2012 6:28 PM   
Mr Cox



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Status: online 		Higher torque, no starter battery needed, lower fuel consumption etc.

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RE: The gadget for converting glow to diesel - 12/30/2012 7:57 PM   
AMB


 

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From: winter park, FL, USA
Status: offline 		Here is mine ASP52 done by Greg Gkamysz a few years back , milled some off the head worked liner, shortened push rods, made Lavona cell just screws in glow plug hole
If memory right 8500-9000 on zinger wood 12x6 martin

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RE: The gadget for converting glow to diesel - 12/30/2012 8:21 PM   
PWF63


 

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quote:

ORIGINAL: earlwb

quote:

ORIGINAL: controlliner

Lanova Cell?



They discussed it here in this thread.
http://www.rcuniverse.com/forum/m_900816/tm.htm
and
http://www.rcuniverse.com/forum/m_7883005/anchors_7966259/mpage_1/key_/anchor/tm.htm#7966259

The Lanova Enrgery Cell is a variable compression sub-chamber for a model four stroke diesel engine. But it could be used with two stroke engines too.







Where does one get a Lavona Cell like this one from?
The tech drawings will do if someone has them.
It seem pointless to me that this topic has done the rounds in various threads since 2005 and still no one has posted where these are available. What cost, 
or where the Blue Print of one can be obtained.
Answers Please Friends.
Cheers

Fredo



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< Message edited by Hobbsy -- 12/30/2012 11:02 PM >

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RE: The gadget for converting glow to diesel - 12/30/2012 9:18 PM   
qazimoto


 

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Fred,

the so called* "Lavona Cell" was invented by a chap who contributes to this forum and is different to "the gadget".

While it's clear how the former works I'm also still completely mystified by the latter.

To my mind the big question is why bother with either?

Ray

* Yes, I have read the threads quoted but I don't think that the adjustable device (as clever as it is) can be really called a Lavona Cell.

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RE: The gadget for converting glow to diesel - 12/30/2012 10:47 PM   
AMB


 

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Status: offline 		We may be raking the embers to get out the last bit of heat out of them. We still have the classic diesels, good variety, Davis conversion heads for a number of glow conversions 5 minutes and you have a diesel no skills required except changing a head no shortage of choices classic or conversions martin

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RE: The gadget for converting glow to diesel - 12/30/2012 10:47 PM   
Mr Cox



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quote:

ORIGINAL: qazimoto

To my mind the big question is why bother with either?


I have stated some the most obvious reasons above, try one and you'll see their charm too.

To me the major advantage is in the higher torque, you can run a larger prop at lower revs and still have about the same trust. This gives you a much lower noise level and a better fuel consumption. So for models where you don't want to have a screaming engine on a small prop in the front, you go to a diesel instead. Relaxed flying with a minimum of fuss, just fuel, flip and take off.

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RE: The gadget for converting glow to diesel - 12/30/2012 11:08 PM   
qazimoto


 

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quote:

ORIGINAL: Mr Cox

quote:

ORIGINAL: qazimoto

To my mind the big question is why bother with either?


I have stated some the most obvious reasons above, try one and you'll see their charm too.

To me the major advantage is in the higher torque, you can run a larger prop at lower revs and still have about the same trust. This gives you a much lower noise level and a better fuel consumption. So for models where you don't want to have a screaming engine on a small prop in the front, you go to a diesel instead. Relaxed flying with a minimum of fuss, just fuel, flip and take off.


I may have not made my point as clearly as I thought. I'm not arguing against diesels, I have close to 100 (I estimate) and I've been running them since I was 12 y/o.

Most of my models do have a screaming engine running on a small prop and they are diesels. Also the faster you run them the more economical they are.

I do question the claims made that a diesel conversion automatically gives better Torque.

There is abundant evidence that there's not a lot of difference between the power and torque when all the variables are balanced.



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RE: The gadget for converting glow to diesel - 12/31/2012 2:37 AM   
Mr Cox



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quote:

ORIGINAL: qazimoto

I do question the claims made that a diesel conversion automatically gives better Torque.

There is abundant evidence that there's not a lot of difference between the power and torque when all the variables are balanced.



Yes, to simply say that the torque is higher is perhaps an oversimplification. But diesel allows you to run larger props, especially compared to a modern glow engine (older engines where/are a little different), so it is for those applications where I prefer to use diesel engines myself (mostly without conversions though). The only engines that I have converted myself are cox engines, and there it gives you an ability to run much larger props and you get more consistent runs compared to on glow.

I should perhaps leave it to the others then to motivate conversions of larger engines, but there is a whole company based on selling conversion heads for two-strokes, so there must be some market in there(?). Four-stroke diesels are only made by Enya (as fas as I know) and only in one engine size, it also has a rather limited prop range with its fixed compression.

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RE: The gadget for converting glow to diesel - 12/31/2012 4:43 AM   
Diesel Fan


 

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quote:

ORIGINAL: qazimoto

To my mind the big question is why bother with either?


As argumentative as I can be at times, I totally agree with Ray - both systems are a compromise and I would choose neither.



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RE: The gadget for converting glow to diesel - 12/31/2012 4:46 AM   
earlwb


 

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quote:

ORIGINAL: PWF63
quote:

ORIGINAL: earlwb
quote:

ORIGINAL: controlliner
Lanova Cell?


They discussed it here in this thread.
http://www.rcuniverse.com/forum/m_900816/tm.htm
and
http://www.rcuniverse.com/forum/m_7883005/anchors_7966259/mpage_1/key_/anchor/tm.htm#7966259

The Lanova Enrgery Cell is a variable compression sub-chamber for a model four stroke diesel engine. But it could be used with two stroke engines too.


Where does one get a Lavona Cell like this one from?
The tech drawings will do if someone has them.
It seem pointless to me that this topic has done the rounds in various threads since 2005 and still no one has posted where these are available. What cost, 
or where the Blue Print of one can be obtained.
Answers Please Friends.
Cheers

Fredo


The guys all make them, thenselves. No one makes them commercially. But you might be able to get one of the other guys to make on for you. There are some drawings for them someplace. I think it is mentioned in one of the threads I posted above.  But there isn't anything revolutionary or tricky to it to make it hard to make a Lenova cell. You only need to make a snug fitting piston that you adjust down. engine combustion pressure will force it up. Usually they use a O-Ring or two for the piston to seal it better too. The actual dimensions are not critical. The guys have made quite a few different looking Lenova engery cells too and they all work. One thing is the outer housing that is threaded for the glow plug hole, needs to be a good quality metal, as aluminum may be too weak in some cases and it will blow its top off, so to speak. The rest can all be brass though.





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RE: The gadget for converting glow to diesel - 12/31/2012 4:49 AM   
earlwb


 

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quote:

ORIGINAL: brokenenglish
But I don't understand why anyone would want to run a modern four-stroke as a diesel...


Apparently there is a demand for four stroke diesel engines somewhere as Enya has been making them for quite some time now.  Maybe some form of the Texaco Event or similar endurance type of an event.  But like the others stated, no glow plug, more torque to turn larger props, and also less fuel consumption. But I would think it is just being different than everyone else.





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RE: The gadget for converting glow to diesel - 12/31/2012 6:00 AM   
Warbirdguy



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From: Wartrace, TN, USA
Status: offline 		Contact Eric Clutton at http://www.cafes.net/doctordiesel/ He can answer any question you have about what you have and can supply you with whatever you need.

He is a really good friend of mine and lives here in same area. You can ussually find him at all the swap meets in the south east. Just listen for the engine running over in the corner He has several test engines and conversions you can get a free lesson on.

WBG

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RE: The gadget for converting glow to diesel - 1/1/2013 11:48 PM   
jessiej



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quote:

ORIGINAL: Hobbsy

Gadget plugs, at last.


I have one of those that I acquired in a box of miscellaneous old parts. I had no clue what it was at the time.

Jess

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