This listing is for the engine in the picture. This engine is complete and ready to run!
The James Coombes is based on a table engine reputed to have worked for more than a century at a Bristol colliery. The original engine developed approximately 20 horsepower at 60 psi running at 40 r.p.m. This model is scaled down one inch to the foot (1:12).
Unique design has no valves! - Easy to build gift idea! Please note that this is a kit for hobby machinists. It cannot be built without machining equipment. This item is a kit containing the plans needed to machine the Thimble steam engine by Liney Machine.There are NO ready to assemble parts. You will need a lathe and either a z axis on your lathe or a mill to make this design. We makemany steam engines here at Liney Machine and this is the one that everyone wants to play with when they see it. You can get it running at several hundred RPM just by blowing into it with your mouth.The Thimbledoes not have any valves like a normal steam engine. Instead the .02 inch thick piston tips sideways on the return stroke allowing the steam or airto blow by. This results in very little friction and amazing speed (We have had one up to 10,000 rpm!). You will be amazed by how well this design works and the small amount of pressure required to run. The flywheel is only 1.25' in diameter and the bore is 3/8 It is a very simple project. If you are expierienced you can make it in an afternoon. If you are just learning, it is the perfect way to start. The designs are two printed pages. They are CAD drawn with clear easy to read dimensions. Please bear in mind that these aretechnical drawings, not machining how-to instructions. There are often many viable approaches to making a part. That challenge is left up to you. The following materials are included: Plans Only SAVE MONEY - DON'T WAIT FOR PLANS - DOWNLOAD PLANS NOW! SELECT THE OPTION TO DOWNLOAD PLANS BELOW AND SAVE $3.00 OFF THE LIST PRICE FOR THE HARD COPY OF THE PLANS.AS WELL, YOU WON'T HAVE TO PAYANY SHIPPING COST! How the download option works... Create a user account. Purchase plans with the download option selected. You will receive an e-mailmessage once we have verified payment. Login to your account and download the plans. Very easy and you save some money!