Thats a nice looking plane! While you could probably make an R-180 work increased drag and mounting headaches would probably be reason enough to shy away from...
Hey edi, Thanks for the thoughts and suggestions. I'll mull them over. Also, it would seem that electronic ignition can fire any combination of cylinders, be...
Hello John - Electronic ignition is fine. Probably the most difficult operating regime is the outboard motor. They seem to be quite happy with electonics. ...
Hi edi, Imagine: 2 x 6... using standard vw heads, sleeves, crank, etc...at 2200 rpm, and with the right cam and carb, each cylinder is good for what--15hp?...
Hello John - Imagining is fine - putting it down on paper is better. I would always look long and hard at incorporating a speed reducer between the engine and...
Good work Jim, Do you really need to cast the top head? Couldn"t you just use heat sink extrusion ? The side valve design really looks like a nice simple...
Does anyone have information on the oil galleries or plumbing? I have the prints but the information is not provided or I am missing that page. The prints...
One reason for casting my top head is that I won't have to machine the combustion chamber since it will be part of the mold. There are varying thicknesses in...
As far as plumbing goes IMHO it would be better to use AN or SAE fittings. Only use NPT where absolutely required. (Such as oil sending unit) Here's a page...
The shop that is making the master rod for me is having a program written to cut the rod in one solid piece. If I ever need another all I have to do is make a...
Made some changes to the mold and things went much better. Got so excited after the good pour that I made a couple of pages. Here's a link to the index page....
Hi guys I posted a new picture of my one piece master rod in the photo section. You guys want to take a look at it and see if you see a flaw in my idea. The...
There are a few details that might be helpful IMHO. (I'm not an engineer) Is there going to be a radius in your channel or is it sharp ?(Ought to be a radius) ...
One more thought... RE: Master rod link pin holes. Ream through .749" and then on one side hand ream or carefully hone to .75". This will give an interference...
I pulled my information from the HCI prints, I intended to put bronze bushings in the link rod pin holes on the link rods themselves, I kept the tolerances...
I turned my pins out of 4130N and I intend to harden them myself. Mike Robbins ... From: Jim Daugherty To: HCIRadialbuilder@yahoogroups.com Sent: Monday,...
The webs do get thin where the link rods need to be but one could argue that the "faceted" webbing adds strength. The circular webbing you're using would be...
Hello Jim; I ground the OD of the knuckle pins with a tool post grinder and finished the surface with red rouge until I had a mirror finish and a perfectly...
While looking around for valve seat cutters I came across something neat which might work well. Apparently they make full profile cutters for valve seats. In...
As long as the microfinish is right and the material is of the proper hardness it ought to work. (Read not wear your alum rapidly) It's dificult for someone in...
You could probably get away with indicating it in as long as you have enough rigidity to avoid deflection in the tool. The flat head aspect really doesn't...
The neat thing about the cutter I mentioned is that it simultanously cuts all three angles. (Much like a full profile threading insert does.) The tooling it...
If you are going to make a tool holder for the seat cutting insert your talking about, it is a very minor thing to make it with the pilot. with the cutting...
The plan is to make an insert holder which plugs into a 2" boring head for the mill. (This would make it's cut dia adjustable) Since the heads are flat...
And what a nice little engine it looks like too. Looks to have very good power to weight. I'm pretty keen on getting a set of plans(at this stage) once I've ...
Yes you have it correct. The cylinders are symmetrically spaced but the pistons reach top dead center at different times as you progress around the engine....
I've finally gotten around to looking closely at the R-220 engine. Up till now I've been working on completing stage 2 of the 2 planes I am building from...
Well this is it lurking on the side line has come too a end with the arrivial of my plans from HCI I now have alot of diggesting to do and where to start. I...
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