richdlc Posted May 14, 2011 Share Posted May 14, 2011 Hi - hope someone can help me - I'm building a Vector 1/32 R2800 engine & have a question about the wiring for each cylinder - it's an 18 cylinder engine, but the ignition harness has many more attachment points for wiring than I thought would be needed - this pic shows what I mean: on my build I've used two wires for each two-pronged attachment point - one goes to the front cylinder, another goes to the corresponding rear cylinder behind it. The pic shows that each prong on the ignition harness has a wire running from it - what I can't figure out is where the extra wires go - should each cylinder have more than one wire? I know it's a bit vague but if anyone has any ideas I'd be grateful to hear them... rich Link to comment Share on other sites More sharing options...
automaton Posted May 14, 2011 Share Posted May 14, 2011 (edited) Hi Rich. Each cylinder has two spark plugs. They are opposite to each other front-to-back. EDIT: I see one thing that may be misleading you-the engine in the picture you posted seems to be missing the spark plug leads that should be going to the front spark plug of the front row of cylinders. Do a google image search and find some more R-2800s, that should clear some things up for you. HTH; Automaton Edited May 14, 2011 by automaton Link to comment Share on other sites More sharing options...
richdlc Posted May 14, 2011 Author Share Posted May 14, 2011 ah I see - so there should be 36 wires total, and each cylinder has one at the front and back? yeah I did notice that the pic has some wires missing sorry it was a little unclear but I think I get it now - thanks for your help rich Link to comment Share on other sites More sharing options...
Guest Posted May 14, 2011 Share Posted May 14, 2011 What pic??? And yes, 2 wires per cylinder...........Harv Link to comment Share on other sites More sharing options...
Iain Posted May 14, 2011 Share Posted May 14, 2011 Yup - two plugs per cylinder - each fed from a different magneto (two in all) - standard aviation practice as the engine will run even if one mag fails. Iain Link to comment Share on other sites More sharing options...
Fox Posted May 16, 2011 Share Posted May 16, 2011 Good thing you are not building a PW 4360 it has 72 spark plugs. I can provide you pictures if you need detailed photos. Casey Link to comment Share on other sites More sharing options...
fightersweep Posted May 16, 2011 Share Posted May 16, 2011 Spooky coincidence! I was about to post the same question using the same picture as reference for the R2800 I'm building for my Trumpy Bearcat build. That's instantly cleared up my question! I really wasn't sure where those extra wires went as finding photo's of the rear of a R2800 isn't easy! Thanks guys... Regards; Steve Link to comment Share on other sites More sharing options...
Juggernut Posted May 16, 2011 Share Posted May 16, 2011 Good thing you are not building a PW 4360 it has 72 spark plugs. I can provide you pictures if you need detailed photos. Casey 28 x 2 =72? Gee, I thought it was 56. I gotta go back to school. Link to comment Share on other sites More sharing options...
LSP_Ron Posted May 16, 2011 Share Posted May 16, 2011 That's a small hand full of plugs to have to change and gap. 10 minutes a plug = 56 straight hours of work. Link to comment Share on other sites More sharing options...
Fox Posted May 22, 2011 Share Posted May 22, 2011 28 x 2 =72? Gee, I thought it was 56. I gotta go back to school. The PW 4360 has 4 rows of 9 cylenders 2 plugs per cylender if my math is correct that is 72 plugs. Link to comment Share on other sites More sharing options...
LSP_Kevin Posted May 22, 2011 Share Posted May 22, 2011 Casey, when you click on the 'Reply' button for a post, you can actually write your answer under the quoted text before submitting the reply. There's no need to put your reply in a separate post! I've merged your previous 2 posts in this thread to tidy things up, and give you an example of what it looks like. Kev Link to comment Share on other sites More sharing options...
Juggernut Posted May 22, 2011 Share Posted May 22, 2011 The PW 4360 has 4 rows of 9 cylenders 2 plugs per cylender if my math is correct that is 72 plugs. No, the 4360 has 4 rows of 7 cylinders...56 plugs. Wikipedia R-4360 Link Link to comment Share on other sites More sharing options...
Fox Posted May 23, 2011 Share Posted May 23, 2011 Casey, when you click on the 'Reply' button for a post, you can actually write your answer under the quoted text before submitting the reply. There's no need to put your reply in a separate post! I've merged your previous 2 posts in this thread to tidy things up, and give you an example of what it looks like. Kev Is this correct Kevin? still learning on all fronts . Casey Link to comment Share on other sites More sharing options...
LSP_Kevin Posted May 23, 2011 Share Posted May 23, 2011 Is this correct Kevin? still learning on all fronts . Casey Excellent! I know these new systems can be confusing at times. Just ask if you need any help or advice. Kev Link to comment Share on other sites More sharing options...
Fox Posted May 24, 2011 Share Posted May 24, 2011 28 x 2 =72? Gee, I thought it was 56. I gotta go back to school. Ok Tim I have thaught how I was going to work my self out of this mess I got my self into. And all I can come up with is when your wrong your wrong and that was me big time. I will do better next time. I will do my home work in the future before I step in it again. My bad Casey Link to comment Share on other sites More sharing options...
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