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-   -   CY MODELS La-7//Evolution 160 radial (https://www.rcuniverse.com/forum/rc-warbirds-warplanes-200/11640003-cy-models-la-7-evolution-160-radial.html)

n8622t 07-24-2017 08:33 AM

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Ready for primer

warbird04 07-24-2017 09:32 PM

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Jimmy,
You got a incredible job, well done. Do you have brocken in the Evolution radial motor?
My canopy opening system is fonctionnal, and simple to make. The closing way is made with magnets. I can post you new pictures about the slidding system, but you must wait 14 days, i am curently in holidays...

Here another pictures on my La-7 progress:

n8622t 07-25-2017 05:08 AM

Enjoy that holiday warbird and Thanks for the nice comments. I look forward to seeing how you did your canopy. It looks great!!

n8622t 07-26-2017 04:58 PM

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Tailwheel is finished...

n8622t 07-26-2017 05:00 PM

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Now back to the wing

n8622t 07-28-2017 10:25 AM

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While setting th toe in I discovered the OEM struts weren't good enough quality so I ordered a set from Robart....so I'll set the wing aside and work on the business end of the fuse

n8622t 07-28-2017 10:31 AM

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So I've measured the engine opening of the cowl and it's not quite scale so I'll open it up an additional 1 1/2"

n8622t 07-28-2017 10:33 AM

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Make a tool to mark it

n8622t 07-28-2017 10:35 AM

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Now for the fun...cutting it round!!

n8622t 07-28-2017 11:34 AM

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Rough cut....should I take a little more??

n8622t 07-29-2017 12:18 PM

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Just came in the mail from Iflytailies

n8622t 07-30-2017 06:51 AM

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Smooth out the cut

n8622t 07-30-2017 06:53 AM

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Then make a piece of wood round

n8622t 07-30-2017 07:38 AM

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Add a second ring for strength

n8622t 07-30-2017 07:39 AM

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Ready for sanding

n8622t 07-30-2017 02:39 PM

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Ready for a coat of resin

n8622t 07-30-2017 04:25 PM

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Firewall is drilled!!!

n8622t 07-31-2017 05:09 PM

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More tedious work to do

n8622t 07-31-2017 05:13 PM

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Everything is epoxy coated so I'll call it a day and get the cowl drilled and engine mounted tomorrow

n8622t 08-01-2017 06:13 PM

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Had to make the engine mounting bolts

n8622t 08-01-2017 06:22 PM

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Cowl is mounted

n8622t 08-01-2017 06:25 PM

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Got it mounted

n8622t 08-01-2017 06:27 PM

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Working on cowl detail next

warbird04 08-02-2017 12:32 AM

Take special care to the hot exhaust cooling air! It is a big problem with the La-7, there are nothing to make escape hot air from the coling... and the 2 openig for the side exhaust are not enought...
Can anybody explain how the full size La-7 motor cooling work?

n8622t 08-02-2017 08:58 AM


Originally Posted by warbird04 (Post 12356805)
Take special care to the hot exhaust cooling air! It is a big problem with the La-7, there are nothing to make escape hot air from the coling... and the 2 openig for the side exhaust are not enought...
Can anybody explain how the full size La-7 motor cooling work?

That's a good point Warbird....I plan on opening the bottom of the cowl to allow the hot air to move away from the engine. I'll post a pic for you when I get back into the shop.
Hows your build going? Are you still on holiday?


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