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Is it safe to do the bearings now? From what I see they will be as drawn with the addition of the 6-32 threaded hole for oil cups. Dick

Welcome to the group Fred ! Dick

Chuck , Bob is using Rhino 3D. Dick

Hi Bob, have you seen this Roberts design built to power one of Ray HasBrouck's engine designs? The boiler looks similar to a Yarrow. Dick http://plsntcov.8m.com/stmbot.htm

Hi Steve, What a great engine you have there! I really like the brass inlays and contouring, right down to the wood lagged cylinder. Thanks for sharing that! I know we're just starting out with the Team Builds and not everyone can't participate all the time, but it would be great if at some...

Just saw this link Wes posted in another thread . http://cedesign.net/steam/coomber.htm What do the rest of you think of re styling the bearings a bit so they aren't so plain and square. I was thinking something like on this link. Especially if the flywheel is moved outside. Your thoughts...

I missed that link you posted. I really like the styling changes on the bearings and base. Dick

I couldn't imagine straddling that in traffic. :o My 83 Shovelhead is hot enough on those body parts when its 80 degrees out. ;D Like that airplane ! Dick

Great job on the machining Wes! My router software at work has tabs,very handy. What is the material? But why are we calling it a Coomber Rotary on this forum ,all my downloads say Comber Rotary? Dick

Wes, I'll do the Bobbins. I didn't see a call out for material type for them though.Needs to be a good bearing surface inside and out. How about cast iron or brass? Dick

I have it modeled up with the flywheel outside the bearings, and the oil-ite bushing in the small end . Also the sleeve to take the place of the flywheel for retaining valve body position. This should give an idea of how it will appear. Dick

Looks great Brian! Your on your way to having a collection now ;D Best of all you built it, there isn't any part you don't understand and can't explain or give advice on how to construct! A good feeling to be sure! Dick

Lets not forget that is we choose to move the flywheel outside we need to have a spacer inside the bearing blocks to keep the valve body located. Dick

Very nice David! I really like the design ! Dick

Almost forgot, I like the aluminum with filled letters. :) Thanks, Dick

Eric , On the small end it won't interfere with the oil cups at all. On the big end the strap of aluminum above the bore is only 1/8" . That is why I asked about making them a little taller when the oil cups were agreed on. No need to increase the height just for the cups but if you want a...

Instead of just using the aluminum as the bearing surface I propose inserting a 3/16 id 5/16 od oil lite bushing in the small end bearing. If you look on page 219 of the plans on the top view the flywheel sets the sideplay of the valve body in the big end bearing. By using a bushing in the small...

I think what happened was a lot of discussion happened here in the original thread... Dick http://www.homemodelenginemachinist.com/index.php?topic=2335.15

I think what we need is a list of modifications that we are all aware of. So far the base is thicker, we are using oil cups, possibly an angled hole to fasten the flywheel,and set screws on the forks I think . I was playing with the cam ring to see what else might work easily. I have drawn a...

Wes , You can put me in for the cylinder block and liner. Dick