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Dale Detrich Attica, OH firstname.lastname@example.org
Plumbing T2 , 0.75 bore X 0.625 stroke 6/15/2008 Part 1, Click here to got to part 2 and the finished engine
Well.....Here it is..........It does not look like much at this time......But to the builder's eyes (me) , it looks as if it is a 3/4"bore X 5/8" stroke , twin cylinder fan wheel cooled , complete with two CD units providing the spark......BTW, the engine will have twin carbs.......The pistons will move in parallel movements, which will give the engine a uneven firing order.........Basic wants for the engine is a idle of 850 to 1000RPM, and a top speed of near 7000 RPM.......The block is a 3/4" X a cross . cast brass plumbing fitting.....Sounds good enough that I should get busy building it.....There will be a "LOTS" of borrowing engine parts from the Brass Model "T" engine......Basic crank, bearing cups, cylinders, cams, and a slight modified heads.....Will keep you informed as the build works out....Thanks......Dale
I am going to use almost everything that I can from the Brass "T" engine
Some more build time on the Brass "T-2 engine
Wash the engine parts, and your hands before you try to silver solder............BE CLEAN..........
just a few pictures of the "T"-2 engine.....This one is the exploded view of the engine......The engine will be cleaned and polished, then the final assembly.....Then I will work on the box mount for the engine.....So far I have fit up the parts, and have been working all of the "tight" spots out of it....I will follow up with a few pictures with the engine assembled......Dale
The "T"-2 has the same look as the front of the four cylinder engine.........The brass cross does not have any way to off set the cylinders, so I had to build a split (large end of the rod for one of the cylinder)...........While the other cylinder (big end of the rod ) fits inside of the split end of the first rod.......So now the cylinders are inline and now the pistons move with parallel movement ....Not in opposition like the other twins....The next thing that I got into was the ignition system for the engine.....Using a waste fire set up I had one spot where I was firing the plug in one cylinder with a fuel /air charge (while it was at the bottom of it's stroke).........So I am going to fire the engine with two ignition system and run the engine as if it was two separate engines........I have one CD module, timed , and fixed for the number 1 cylinder.......I made a second hall effect mount, so I can move the pick up from -20 degrees to +20 degrees (compared to number one cylinder)....This will let me adjust number two cylinder to the best running point with the number one cylinder.......And when I slip the magnet disk + and - degrees, that will let me adjust the ignition (both cylinders) at the same time......I am remaking a cylinder head ( I did not like #2 head), and then the engine will be finished..........I will finish the New box for the engine, and then go into start up.......It should be a good start up.
This project has so much detail I am starting a second page for the finishing details. Click here to continue with this project. David
Copyright 2008, Florida Association of Model Engineers and engine builder as noted above, All rights reserved.