Painting Cylinders.

Builders,

Here is a quick look at simple task in the middle of the day; Painting a set of Cylinders. These particular ones are going on the 2,775 cc demo assembly motor which will go together at Corvair College #42.

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While no one building one motor needs to make the fixture, some of the other tips apply to any build.  The first step is to get the cylinders very clean, for which I use brake cleaner or carb cleaner after a trip through the mineral sprits tank. After washing I dry them in the gas BBQ grill.

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Above is a tool made many moons ago, it makes painting a set of cylinders uniformly very easy. It is a 4″ piece of PVC, with thin .125″ walls, slit down the length and rolled up. It springs back from hand clamping and holds the cylinder in place without scratching it. Cylinders are slid on one at a time and taped to each other. Keeps the paint overspray from getting on the bores.

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Above, an end view of the operation.

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Cylinders being painted. The only stuff I use is Dupli-Color 500 degree engine paint, it is available everywhere, it doesn’t fish eye and it holds up great. One can is more than enough for 6 cylinders. The fixture allows for rotation and you get to see all the surfaces. In really humid places like Florida, the paint will sometimes blush and get a foggy look. No worries, take the tape off and put them in the grill on 300 degrees for 10 minutes, and volia! they are shiny again and the paint is cured. If you do this, put a light coat of oil on the bores as soon as they cool, otherwise they will get surface rust.

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Wewjr.

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Behind the scenes work.

Builders;

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Even when I don’t write blog stories, activity in the hangar still rolls along. 2018 was Oshkosh number twenty three for me, and I collected a good number of stories that I will share a bit later. The prep work for the event goes on for months, and after it is all over and we pack up and drive home, August is typically a slow month for stories, but the work and parts production, and the prep for the fall events at the Zenith Factory and Barnwell SC still advances.

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Above; A large shipment of CNC mandrel bent stainless tubing for Intakes and Exhaust systems arrives after Oshkosh. You are looking at $5,000 in tubing; It is made in the US, from US material. I get offers from Chinese companies every month to supply this tubing for a small fraction of this cost, but I operate on the assumption that our builders prefer I use the best material rather than the cheapest. I have had the same supplier make these for more than 20 years. It is the same outfit that supplies the OEM parts for Lycoming and Continental.  Many of the tubes pictured are already finished product in the hands of builders around the country.

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This week brings more prep work for Corvair College #42 at the Zenith Factory in Mexico MO, September 21-22.  I share more information on it over then next few days. The center piece of the event will be the assembly and test run of a complete 2,775 cc Corvair engine with a billet crankshaft, from an SPA “Engine in a Box” complete kit. The engine is not spoken for yet, and if you wish to be its owner, contact us for more information.

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William (904)- 806-8143 or Rachel at SPA, (904)-626-7777

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Wewjr.

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Further reading:

Info Page,Corvair College #42, at Zenith Aircraft.

2,775 cc Pistons are here.

New 2,775 cc Corvair for a Zenith 601XLB

Pietenpol 2,775 cc Corvair; Trevor Rushton from UK

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