John Kerr's Hatz Classic Project: rotecradial.com

In April of 2006 John contemplates the use of the R3600 on a Hatz Classic.

By Osh 2006 John had satisfied himself on a number of technical issues and at Osh 2006 placed a deposit on a Rotec R3600.

By August of 2007 the Fuselage was completed. Work on the mounting frame was done by Jeff Shoemake with a R3600 on loan.

The next step was the oil tank. Working with Rotec and going through several design possibilities the oil tank design was completed in December of 2007.

John took delivery of his R3600 in January of 2008 and did a trial mount to check the oil tank fit and the mount. All looked well.

Pictorially:

Mount and Fuselage: . . .........

Oil Tank design: ...
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Engine arrives - trial mount : and oil tank fit: ...

John Writes (July 08): The cowling from the firewall to the collector ring turned out quite nicely.

The process was to determine a rough shape with cardboard bridging the space from the firewall to collector ring. The shape was then transferred to .025 aluminum which was then held in place with clamps with tie downs, for drilling and installing with clecos. The curved shape was maintained along the leading edge with fluted .025 angle.

The entire cowl is comprised of 3 pieces, top and sides. A 90 degree bend at the joints with piano hinge makes for a very rigid installation supported by the firewall flange and machine screws and camlocks. There is a cooling hole around the exhaust stacks of about 150 square inches (enough, not enough, i don't know).

Cowling: . . .

Cowling overall view: .

Click on each thumbnail to enlarge the pic ....

rotecradial: Exciting Stuff! Looking forward to more.rotecradial: