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+--- Thread: 5 Cylinder Radial (/thread-2632.html)
RE: 5 Cylinder Radial - Bill Gruby - 04-27-2015
Thinking out of the box here, the crank could be extended at the rear and drive the distributer with a set of helical gears, or am I thinking wrong? You would need to redesign the crank to have just a tad for the extension.
"Billy G"
RE: 5 Cylinder Radial - Brian - 04-27-2015
I think that is possible Billy But it will take up a fair bit of room and push the oil tank back a bit. that I now think I have made to large already I think about half a pint of oil will be more than enough, also it will make servicing the distributor almost impossible without striping the tank off.
I will draw up the cam drive and see what it looks like.
Tomorrow we are off to the boat if it's not windy, and stay the night
Brian.
RE: 5 Cylinder Radial - Brian - 04-30-2015
At last I think I am getting somewhere.
Again this drawing is a montage of all five cylinders. So what is new .
The cylinder and rod are now longer to reduce con rod angularity and allow a better proportioned master rod.
Oil tank is now shorter and will form the mounting for the engine.
Plunger oil pumps driven from the accessory shafts on number 2&5 cylinders, spit and hope lube system.
Distributor on number 3 cam shaft trigger unit on number 4 cam shaft.
Natural gas cab mounted below crank case feeding annular chamber in nose piece.
Prop hub to take 24X12 prop (possibly)
[attachment=10602]
More work to do on tensioner for belts and determining the position of the head studs and the angle of the exhaust port. ETC
But as I do not intend to start cutting metal until the winter I have plenty of time.
Brian
RE: 5 Cylinder Radial - Pete O - 04-30-2015
What a fantastic project.
Have you considered using hall-effect ignition? Takes away the need for a distributor. Even electronic fuel injection rather than a carburettor? You could make that thing roar from a remotely mounted control panel. There are downloadable electronic schematics to accomplish both.
RE: 5 Cylinder Radial - Brian - 05-02-2015
Hi Pete
Thanks for the heads up on hall-effect, I had discarded the idea because of having to use 5 coils and trigger units, but you made me do more research and I have found coils for £6 each and a home build circuit for the trigger unit so I may think again about using H-E
The fuel supply for this engine will be Propane, I have had great success with the carb I made for my 32x40 engine So I am continuing with this engine.
Thanks again, information is always useful.
Brian.
RE: 5 Cylinder Radial - Pete O - 05-04-2015
Brian I just had a look at your youtube video of the 32x40 engine running, a beautiful thing. Looking forward to the video of the radial starting up!
RE: 5 Cylinder Radial - Brian - 05-07-2015
Thanks for the comments Pete, I am still working on the Highlander as we now call it Just tidying and making a new gas supply. from a old propane blow lamp ( Pic's will follow ).
The only problem with using the name Highlander is that on U tube the video gets placed wrongly.
The Radial will take a back seat for the summer, While I am on the boat for the next few months Getting ready for our
Giro around Sicily or where ever the wind takes us . Life is hard when you are retired. Graft --Graft -- Graft. not a moment for real work
Contact from Wi Fi in ports may be limited. we will see when the time comes.
Brian.
RE: 5 Cylinder Radial - Brian - 05-25-2015
Bad weather has caused us to be ashore for a while so the CAD has taken a bashing, not a lot is left of the original design
The cylinders are longer --stroke shorter-- crank case larger--The heads have had a total rethink--cylinders are now of steel rather than iron liners in alloy cylinders --oil pumps are now Co Axial driven of no1 accessory shaft.-- we now have tensioners for the cam belts.
etc--etc.
For the ignition it looks like individual hall triggers on each cam with small coils from the scrap yard ( on plug type modified to mount remotely).
When I start the build I will follow Colin Chapmans (Lotus) advice --Remove weight and Add lightness.
[attachment=10864]
[attachment=10862]
Working drawings now need to be done for each component so that just may take a while.
Brian.
RE: 5 Cylinder Radial - TomG - 05-25-2015
Hi Brian,
How do you plan on opening the valve(s)? I don't see any cams or linkage.
Tom
RE: 5 Cylinder Radial - Pete O - 05-25-2015
(05-25-2015, 03:03 PM)TomG Wrote: Hi Brian,
How do you plan on opening the valve(s)? I don't see any cams or linkage.
Tom
There's a belt-driven overhead camshaft on each cylinder Tom. I'd love to see some detail on the belt drive and tensioner arrangement.
I'm picturing a home-built Sopwith Pup with a home-built radial engine up front....