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Old Jul 09, 2012, 02:48 PM
dogshome is offline
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Video de rigueur


If all the glow starters work and the thing runs -->
12V/8 glow heads in series = 1.5V. Wire 'em all in series and connect to a car battery.
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Old Jul 09, 2012, 03:23 PM
Clancy Arnold is offline
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I am 5' 8" the Taube is 7' 4"
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Dogshome
There is one small problem with your idea of hooking all of the glow plug heads in series is that one side is already connected in parallel through the crankcase. He is limited to parallel connections. I would recommend independent power to one, two or three plugs each.

Another problem with the series connection is that each plug pulls a slightly different current and therefore the voltage applied to a specific plug could exceed the voltage limit for that plug.

Clancy
Old Jul 09, 2012, 03:42 PM
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Looking forward to the racket.

Greg
Old Jul 09, 2012, 08:35 PM
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Possible Gear Problem


Sorry, I have not read the entire post. But are your pinion gears fastened to the crankshaft using the a tapered fit? or friction?

The taper is the best option.

I had a similar situation with my dyno, shortly after receiving it.


Bill M.
Last edited by Capt. Quirk; Jul 10, 2012 at 03:31 PM. Reason: The taper is the best option
Old Jul 09, 2012, 10:26 PM
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I would suggest using one of those radial engine on board glow ignitor systems. granted they are pricey, but makes it more simple. But there is something to be said for using a bunch of batteries so you can hook up each glow plug separately.
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Old Jul 10, 2012, 02:29 AM
dogshome is offline
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Quote:
Originally Posted by Clancy Arnold View Post
Dogshome
There is one small problem with your idea of hooking all of the glow plug heads in series is that one side is already connected in parallel through the crankcase. He is limited to parallel connections. I would recommend independent power to one, two or three plugs each.

Another problem with the series connection is that each plug pulls a slightly different current and therefore the voltage applied to a specific plug could exceed the voltage limit for that plug.

Clancy
I'd better pull the patent application then
Old Jul 10, 2012, 03:28 PM
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On the Venturi size, since only 4 engines will be intaking at any given time, use approximately the area (not diameter) of 4 standard venturis.

If you keep the large venturi and want to confirm the correct size through engine tests. Simply insert a wooden stick or a dowel into the venturi while the engine is running. When the engine starts easy and makes good rpm, you can calculate your new venturi diameter.


Bill M.
Old Oct 01, 2012, 09:58 PM
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Interesting project! Good luck on the first run, and keep us posted.
Old Oct 02, 2012, 12:51 AM
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Quote:
Originally Posted by flyrod View Post
Interesting project! Good luck on the first run, and keep us posted.
You just reminded us about this project. We have'nt heard anything yet about running the engine. I do have this very rare 049 based 5-cylinder made by Hobby Air Products in Japan (article can be read in ECJournal nr 157) This was ex De Rancougne collection I have never tried to run the engine so I was very interested in that home built project, realising it was not going to be a piece-o-cake to run it.
Old Oct 10, 2012, 05:48 PM
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[QUOTE=RknRusty;

Anyway, we're looking forward to you tinkering again. I saw a 7 cylinder radial configured much like yours on another forum. It runs with an OS carb and an impeller. It didn't say anything about the firing order though.[/QUOTE]

It doesn't have a impeller Rusty, doesn't need one.
Sequential firing.
Old Oct 10, 2012, 06:15 PM
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Quote:
Originally Posted by RknRusty;

Anyway, we're looking forward to you tinkering again. I saw a 7 cylinder radial configured much like yours on another forum. It runs with an OS carb and an impeller. It didn't say anything about the firing order though.

Quote:
Originally Posted by iamspotty View Post
It doesn't have a impeller Rusty, doesn't need one.
Sequential firing.
Oops, so sorry, I was mistaken.
Old Oct 15, 2012, 08:14 PM
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I'm still trying to get to test running! Just can't seem to get to it!
Old Oct 16, 2012, 01:41 AM
Brutus1967 is online now
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the great Gassif´er
Darn... saw your name as last poster, and immediately my hope flared up....

Hope you get to it soon!

Brgds, Bert
Old Nov 30, 2012, 01:00 PM
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Glow driver solution found!


I decided I was not going to let the year end without trying to get this engine started.
So, got online today and did some searching for something to drive the glow plugs.
I was just about ready to go all out and buy a McDaniel 9 cylinder driver but
came upon this simple low cost single cylinder driver:

http://www.hobbyking.com/hobbyking/s..._1_5V_3A_.htmlhttp://www.hobbyking.com/hobbyking/s..._1_5V_3A_.html

At less than $5 each I figured it was worth a shot so have ordered 10 of them, got one for a spare.
Total cost with shipping was $49.43.
Lets just hope they are not prone to frying glow plugs.

Also, I have the engine mounted, will try and get some photos of that
real soon and I'll let you all know when the drivers arrive!
Old Nov 30, 2012, 01:50 PM
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