Would you like free plans for a gas-powered 4-cycle engine that is a proven and easy-to-build design?
Joe Webster designed this engine to be quick, inexpensive and easy to build. It doesn’t have any parts with super-critical dimensions and you don’t need a rotary table or other expensive tooling to construct it. The plans are well drawn and include two pages of construction notes.
This is what is known as a “bar stock” engine, which means it does not use any castings. It uses flat and round metal stock that can be purchased from almost any metal or machine shop supplier. It is not a big engine so the cost of the metal should be modest. Joe suggests making the 3.75-inch diameter flywheel out of an iron dumbbell purchased from Wal-Mart to save money.
The engine uses some components that need to be purchased, like a couple of gears, a spark plug, points, condenser, ignition coil and piston rings. The part numbers and vendors are listed on the plans and they are all readily available, I’ve checked. Joe recommends you also buy and use a carburetor for a radio-controlled car engine, although he does include drawings so you can make one if you want.
Unfortunately, Joe’s website seems to have disappeared but you can still download the plans here. Unfortunately they are metric, in millimeters. It looks like Mr. Webster release two sets of plans, one in US and one in metric dimensions. His website is long gone and so far I have been unable to find the plans with US dimensions. Please leave a comment if you have them or know where they can be downloaded. There’s a lot of interest in this engine.
Related Links:
Home Model Engine Machinist: Making the Cylinder – Making the Piston – Search the site for ‘Webster Engine’ for more threads
hi jan,
i believe you may be interested in my 11/2 volt ignition units, that i had sandown exibition. send me an email.
alan
Would you please send me plans for this engine?
thanks.
could you please email me webster engine plans in english (inch)., . the measurements online don’t make any sense to me I don’t know are they metric or what
could you please email me webster engine plans in english (inch)., . the measurements online don’t make any sense to me I don’t know are they metric or what
I just discovered, after all these years, that the plans are in metric dimensions. I think Mr. Webster released his plans in both US and metric dimensions and I’ve – only – got the metric ones. One of the dimensions is “53.98” and that converts to 2.25 inches.
I just searched the net and the only plans I could find for this engine are the metric ones.
years ago I built the webster engine from Joe’s plans in u.s. (inch), measurements. I don’t have them anymore so I now use an 8 inch caliper to convert metric to inch measurements.. mine has inch, metric ,and fractions. .I’m attempting to make my second webster engine now .
Hi: The PDF file download goes into a loop and the engine plans will not download.
Can you e-mail a set of DWG ACAD drawings to me in stead.
Thanks
Don Doerner
Canada
Don,
You’ll have to request a set of DWG plans from Joe Webster. His email is
“webster_engines -at- comcast.net”
BTW, I tried downloading the PDF version and didn’t have a problem.
Rob
Here’s a nice builder’s log for a Webster engine that was built someone who says he could hardly spell “lathe” two months before he built it in 8 days.
Whats the chances that hes still around? I would love to have his sold models
Hello my name is Alonzo i would like to know if anyone could tell me anyplace to get copies of plans to put together a scale model Associate hit and miss gas engine.? Thank you for any help.
You need to do a little more Googling. I hope these links will help:
https://www.google.com/search?q=model+hit+and+miss+engine+casting+kits
https://www.google.com/search?q=hit+and+miss+model+engine+plans
I went to this year’s Cabin Fever Model Engineering Expo in Lebanon PA and there were probably dozens model hit & miss engines there. Ten years ago there were almost none.
I think the increase is because of there is a large number of companies that are selling plans and kits. I think there were are least three or four at the show.
I believe I have found the imperial version of these plans. Let me know if you want a copy.
Yes, please. You can email them to [email protected] and I’ll provide a download link for everyone if that’s OK.
hi rob, did he ever get back to you? I am very interested in building this and imperial units would be so much easier for me to follow? if you do have them could you post the link for the plans?
Hej,,Jag vill gärna ha en kopia av ritningarna för motorn,,Tack
Det finns en länk i artikeln:
https://www.homemodelenginemachinist.com/attachments/wew-engine-mm-pdf.109818/