HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Jul 09, 2012, 01:48 PM
Registered User
dogshome's Avatar
Joined Dec 2006
284 Posts
Big thumbs up

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.
dogshome is offline Find More Posts by dogshome
Reply With Quote
Sign up now
to remove ads between posts
Old Jul 09, 2012, 02:23 PM
I am 5' 8" the Taube is 7' 4"
Clancy Arnold's Avatar
USA, IN, Indianapolis
Joined Jan 2008
617 Posts
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
Clancy Arnold is offline Find More Posts by Clancy Arnold
Reply With Quote
Old Jul 09, 2012, 02:42 PM
Dieselized User
gkamysz's Avatar
Chicagoland
Joined Feb 2000
7,250 Posts
Looking forward to the racket.

Greg
gkamysz is offline Find More Posts by gkamysz
Reply With Quote
Old Jul 09, 2012, 07:35 PM
Registered User
Riverside Calif.
Joined Apr 2008
105 Posts
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.
Capt. Quirk is offline Find More Posts by Capt. Quirk
Last edited by Capt. Quirk; Jul 10, 2012 at 02:31 PM. Reason: The taper is the best option
Reply With Quote
Old Jul 09, 2012, 09:26 PM
Registered User
earlwb's Avatar
USA, TX, Grapevine
Joined Dec 2008
12,438 Posts
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.
earlwb is online now Find More Posts by earlwb
RCG Plus Member
Latest blog entry: My Low Wing plane
Reply With Quote
Old Jul 10, 2012, 01:29 AM
Registered User
dogshome's Avatar
Joined Dec 2006
284 Posts
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
dogshome is offline Find More Posts by dogshome
Reply With Quote
Old Jul 10, 2012, 02:28 PM
Registered User
Riverside Calif.
Joined Apr 2008
105 Posts
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.
Capt. Quirk is offline Find More Posts by Capt. Quirk
Reply With Quote
Old Oct 01, 2012, 08:58 PM
Registered User
Joined Feb 2012
28 Posts
Interesting project! Good luck on the first run, and keep us posted.
flyrod is offline Find More Posts by flyrod
Reply With Quote
Old Oct 01, 2012, 11:51 PM
Registered User
Reginald's Avatar
Belgium
Joined Aug 2004
3,447 Posts
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.
Reginald is offline Find More Posts by Reginald
Reply With Quote
Old Oct 10, 2012, 04:48 PM
Registered User
Joined Nov 2011
3 Posts
[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.
iamspotty is offline Find More Posts by iamspotty
Reply With Quote
Old Oct 10, 2012, 05:15 PM
Registered User
RknRusty's Avatar
United States, SC, Columbia
Joined May 2010
1,355 Posts
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.
RknRusty is offline Find More Posts by RknRusty
Reply With Quote
Old Oct 15, 2012, 07:14 PM
Double Naught Spy
iamplanecrazy2's Avatar
USA, TX, Waxahachie
Joined Aug 2004
368 Posts
I'm still trying to get to test running! Just can't seem to get to it!
iamplanecrazy2 is offline Find More Posts by iamplanecrazy2
Reply With Quote
Old Oct 16, 2012, 12:41 AM
Complete RC Idiot Savant
The Netherlands
Joined Nov 2009
2,469 Posts
Darn... saw your name as last poster, and immediately my hope flared up....

Hope you get to it soon!

Brgds, Bert
Brutus1967 is offline Find More Posts by Brutus1967
Reply With Quote
Old Nov 30, 2012, 12:00 PM
Double Naught Spy
iamplanecrazy2's Avatar
USA, TX, Waxahachie
Joined Aug 2004
368 Posts
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!
iamplanecrazy2 is offline Find More Posts by iamplanecrazy2
Reply With Quote
Old Nov 30, 2012, 12:50 PM
Registered User
United States, MD, Frostburg
Joined Aug 2008
1,430 Posts
4075aaron is offline Find More Posts by 4075aaron
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Sold 2 Cox 049 Sure Start Engines fchriss Aircraft - Fuel - Engines and Accessories (FS/W) 2 Dec 09, 2008 11:36 AM
For Sale 2 Cox .049 sure start's snomobila Aircraft - Fuel - Engines and Accessories (FS/W) 3 Dec 07, 2008 09:36 PM
Question Which fuel for Cox .049 Sure Start? ndb8fxe 1/2A Planes 6 Aug 30, 2008 10:52 PM
Question Cox Sure Start .049 EricClark 1/2A Planes 25 May 15, 2008 12:16 AM
Question Need info about Cox Sure Start .049 engine please JLW5178 Beginner Training Area (Fuel) 16 May 03, 2008 04:20 PM