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Cox Engine of The Month
February-2024
1/2A Nut's

"RC Speed Boat Power Drive TD .020"

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The evil pliers, probably caused more damage

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The evil pliers, probably caused more damage Empty The evil pliers, probably caused more damage

Post  rsv1cox Tue Nov 21, 2023 12:21 pm

to model airplane cylinders than any other tool.  But sometimes you're forced into using them.

Case in point is the Wen Mac .049 with a throttle sleeve.  There is no flat milled into the top fin as is with certain Cox engines and there is no way you can get a buffered pry through the exhaust ports.  So, heat and buffered pliers it is.  I have had this engine for a long time but have been avoiding it.  It's not an easy engine to deal with.  

I like the butane torch with a pencil flame that can be directed at a point rather than a heat gun which heats everything.  I'm to lazy to go out to the garage and get my leather piece and it's rain and sleet outside so I wrapped the cylinder in masking tape and directed the flame at the top of the case just under the cylinder.

The evil pliers, probably caused more damage P1016635

 Holding it didn't work, couldn't get a grip on the engine so I chucked it up in a vice, something that I'm reluctant to do. Using pliers I got the cylinder off with minimum damage.  Doesn't matter the engine was unusable, both the roto-matic starter and the internals were castor locked and the starter had slipped a pall.  It took a lot of heat and MMO to loosen everything up.  Simple Green and hot water cleaned the internals.

The evil pliers, probably caused more damage P1016637
The evil pliers, probably caused more damage P1016636

Nice engine, two intake ports and lot's of compression.  And I do love that roto-matic starter.  The little 4.5/5 W/M prop bit me good on the unwind.  

Another spare engine for the W/M Skyraider which came with a standard engine but has built in features to support a throttle sleeve.  I wll keep the original non-throttled engine that came with it.

The evil pliers, probably caused more damage P1016639
The evil pliers, probably caused more damage P1016638

Nasty, nasty day out there today, but we need the mosture.  Forrest fires in Virginia threaten.
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Post  NEW222 Sat Dec 02, 2023 11:00 am

Beautiful airplane! Still a bucket list to see one in person, and even bigger bucket list to see one actually flying in person! Along with an 'Intruder'!
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Post  roddie Sun Dec 03, 2023 9:23 pm

rsv1cox wrote:

Another spare engine for the W/M Skyraider which came with a standard engine but has built in features to support a throttle sleeve.  I will keep the original non-throttled engine that came with it.


Always good to have spare-parts Robert.. especially when it comes to aircraft; model or not.
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Post  NEW222 Mon Dec 04, 2023 7:55 pm

roddie wrote:
rsv1cox wrote:

Another spare engine for the W/M Skyraider which came with a standard engine but has built in features to support a throttle sleeve.  I will keep the original non-throttled engine that came with it.


Always good to have spare-parts Robert.. especially when it comes to aircraft; model or not.

The way I see that he does things, those spare parts usually end up being used in another 'wreck' airframe to help complete another..... Very Happy
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Post  rsv1cox Tue Dec 05, 2023 7:59 am

NEW222 wrote:
roddie wrote:
rsv1cox wrote:

Another spare engine for the W/M Skyraider which came with a standard engine but has built in features to support a throttle sleeve.  I will keep the original non-throttled engine that came with it.


Always good to have spare-parts Robert.. especially when it comes to aircraft; model or not.

The way I see that he does things, those spare parts usually end up being used in another 'wreck' airframe to help complete another..... Very Happy

Smile Smile
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