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This looks like an excellent way to try. The gear is stainless steel 32 tooth, 48 pitch. If I machine out the center of the sacrificial collet first it should clear the tap. Great idea. Thank you. My Dad was a master machinist but sadly he passed in 2009. Nice to have someone to ask. Thanks again

Hello, I’m trying to use stock gears in my engine project but find that they need machining to work. Can anyone explain a good way of holding a gear so the interior can be machined out without destroying the teeth. It also needs to be threaded. I’m thinking a split mandrel with a clamp that...

Sorry for your loss. 52 is very young but it’s hard to lose a family member at any age. My condolences. Elmer

Can you tell me what scale the Gnome crankcase casting is you are selling?

Found what I needed online. Thank you for the idea. Hopefully they will work just fine. Regards, Skip

I will probably want two sets of the listed gears (1 set for spares). Gear #1.) 1.623 diameter x 0.156 thickness 72 Teeth 48 D.P. 0.875 hole Gear#2.) 3(ea). 0.569 diameter x 0.170 thick 24 Teeth x 48 D.P. 0.156 hole...

Do you know if any member that might be willing to fabricate just the gears for the 1/5 scale Gnome engine? I’ve done some fairly intricate machining but have never made gears that small before. Not sure I have the necessary set ups to mill them. Anyone?

Im just not sure if a sand cast crankcase would be too porous. I’m not really set up for Investment Casting with the lost wax process.

Hello Everyone, Over the years I watched my Dad invent many things but his life’s dream was to build a model Rotary Engine. However, time was never on his side to take on the project. I guess that and our interest in RC Biplanes piqued the same curiosity in me. When I saw Les Chenery’s 1/5 scale...

Hello Andrew, are you still making the castings for Les Chenery’s 15 scale Gnome engine. I am new to this forum but would like to get one if possible.