flyrotary@lancaironline.net Mailing List Archive

I have used Teflon insulated aircraft wire, Found Nitral stock, Old used Mazda "O" ring material and my friends

have used 18 Gage hookup wire (Probably Chinese) with a thin coating of GE silicone in the groove and a drop at the cut ends. Put the joint between the intake and exhaust area. Never a failure at 250 HP. Most seal companies have "O" ring stock in many sizes and materials by the foot.

You also put a thin coating of Silicone on the mating surface of the aluminum housings and the legs that go down to the pan surface.

Torque case bolts to the lower spec number in five passes. Tomorrow in the same torque sequence, I remove the bolts one at a time in order, put Nickle antisieze on the threads and on both sides of the washer. Install that bolt and torque to lowest spec number. In a few hours torque again and notice that some of the bolts move even further. A dot on the iron and similar on the bolt head shows how far the bolt has turned after the stock torque method has been used. Have a few extra bolts on hand to cover a soft bolt.

Turn engine over a few times. Now remove strands of excess silicone through the exhaust port. Worked for me for 30 years.

Lynn E. Hanover

In a message dated 6/22/2018 5:40:19 AM Eastern Standard Time, flyrotary@lancaironline.net writes:

Martin, When I inspected engine I only needed soft parts, made my own o rings from cord for the sizes not available off the shelf here. Was a bit hesitant to do it at first, but mazda had no stock in Aus. Wouldn’t hesitate to do same again as very easy & was able to make orings that were exactly right size. I heard some premade seals can be a bugger to install if size is slightly off.

Any industrial seal supplier can get right sizes, Transeals in Perth can supply everything needed.

Worth recording info in thread from http://www.ausrotary.com/viewtopic.php?f=4&t=149153 for info , think from memory I used 2.4mm viton inner. Nbr outer. Cost was about $100

Andrew

On Fri, 22 Jun 2018 at 3:31 pm, Neil Unger 12348ung@gmail.com <flyrotary@lancaironline.net> wrote:

From what I've seen the best is from Tracy Crooks old firm. Real world
solutions. Seem to be just as cheap as within OZ. Neil.

On 6/22/2018 3:48 PM, Martin King martin.king@pobox.com wrote:
> Which way rotarians?
>
> I'm after a full/master seal kit is there a good supplier of these in
> Aus or are they best sourced off-shore?
> I've also just had a pleasant visit to Stephen Izett's hangar and his
> very tidy rotary installation. Thanks again Stephen. Now I just need a
> plane...
>
> MK

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Regards Andrew Martin Martin Ag