Multiple Cylinder Gallery
Eric Pine La
Grange Highlands, IL
Horizontally Opposed 4 Cylinder --
Work In Progress10/31/2004, Complete 4/29/2005
I recieved the plans from Dale Detrich on Sept.
2nd, 04. After reviewing them and planning the order of construction, I
ordered some stock items (gears, springs & mat'l) and then went to work on a
cam grinding fixture for a surface grinder. The fixture works extremely well,
and I can produce a cam in about 45 mins. The fanwheel was my first 3d
cad/cam project from start to finish. It was made from solid aluminum, and
took about 2 1/2 hours to machine from blank to finish. The connecting rods
are made from tool steel and have an elliptical main bearing journal to accept
elliptical brass bushing halves. I engraved my last name on the side for fun.
The rocker arms were another cad/cam project
(11-09-04), and worked out very well. Now that I have much of the internals
finished, I am planning on working on the cylinder head assemblies.
Some people have been asking me about the cam grinding fixture, so here are some
clearer pictures, along with my finished block and cyls.
Here's a pic of my pistons, valves and
cylinder head blanks. The 4 head blanks are made out of a block of aluminum
and took over 1000 lines of CNC code to produce. They are one piece
construction, (thanks to a tip from Dale), and shouldn't take more than an hour
or two to finish. I am just waiting on some screws for the con rods and
material (for the wrist pins) to complete my bottom end. In the meantime I'll
plan the cam box construction. Things seem to be going well and I expect to
have my first engine done by mid December.
Here are a few pics of my progress, the fully assembled short block
without screw holes on the endplates, and a 1pc cam box made from 6061 alum.
I am planning on putting a removable sight window on the cambox, so you can
see the cam while the engine is running. That will be added later since I
want to get this running before Christmas 2004.
12/23/2004 Still a
few hours of work to get it ready for set up. I might just make it for
1/1/2005 I cant seem to get the fuel
mixture right yet.
1/30/2005 Here are some pics of
Just a bit more fine tuning, and i'll tear down
and plate/anodize&powder coat.
Click here for a video clip of the engine running,
it needs RealPlayer.
Here are a few pictures taken at the NAMES show 2005,
thanks to Dale Detrich. I was a bit rushed to have the engine running since
the chrome plater lost my dipstick mount... I finally got the bugs worked
out and I fired up alongside Dale's masterpieces. I am extremely excited to
have my first engine finished. This was a wonderful project! Thanks to
Dale Detrich for being such a great guide, and thank you FAME for a
5/7/2005 Here's a front view of the
engine, you can see the air duct I milled in the mounting block, it channels
air to the cylinders from underneath. I've run the engine for 3 hours at a
time, only stopping to refuel.
Here's a photo of John Snat's engine (the red
one) running alongside mine. It turns out that John completed his engine
within a few weeks of mine, and he lived just a few miles away. We got
together 5-6-05 for a little runtime. John's engine has a "beefy"
flywheel and it can run slow enough to make your jaw drop!
Copyright 2004, 2005 Florida Association of Model Engineers
and engine builder as noted above,
All rights reserved.