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CY MODELS La-7//Evolution 160 radial

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CY MODELS La-7//Evolution 160 radial

Old 07-24-2017, 08:33 AM
  #51  
n8622t
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Ready for primer
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Old 07-24-2017, 09:32 PM
  #52  
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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:
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Old 07-25-2017, 05:08 AM
  #53  
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Enjoy that holiday warbird and Thanks for the nice comments. I look forward to seeing how you did your canopy. It looks great!!
Old 07-26-2017, 04:58 PM
  #54  
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Tailwheel is finished...
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Old 07-26-2017, 05:00 PM
  #55  
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Now back to the wing
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Old 07-28-2017, 10:25 AM
  #56  
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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
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Old 07-28-2017, 10:31 AM
  #57  
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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"
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Old 07-28-2017, 10:33 AM
  #58  
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Make a tool to mark it
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Old 07-28-2017, 10:35 AM
  #59  
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Now for the fun...cutting it round!!
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Old 07-28-2017, 11:34 AM
  #60  
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Rough cut....should I take a little more??
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Old 07-29-2017, 12:18 PM
  #61  
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Just came in the mail from Iflytailies
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Old 07-30-2017, 06:51 AM
  #62  
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Smooth out the cut
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Old 07-30-2017, 06:53 AM
  #63  
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Then make a piece of wood round
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Old 07-30-2017, 07:38 AM
  #64  
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Add a second ring for strength
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Old 07-30-2017, 07:39 AM
  #65  
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Ready for sanding
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Old 07-30-2017, 02:39 PM
  #66  
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Ready for a coat of resin
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Old 07-30-2017, 04:25 PM
  #67  
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Firewall is drilled!!!
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Old 07-31-2017, 05:09 PM
  #68  
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More tedious work to do
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Old 07-31-2017, 05:13 PM
  #69  
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Everything is epoxy coated so I'll call it a day and get the cowl drilled and engine mounted tomorrow
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Old 08-01-2017, 06:13 PM
  #70  
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Had to make the engine mounting bolts
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Old 08-01-2017, 06:22 PM
  #71  
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Cowl is mounted
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Old 08-01-2017, 06:25 PM
  #72  
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Got it mounted
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Old 08-01-2017, 06:27 PM
  #73  
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Working on cowl detail next
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Old 08-02-2017, 12:32 AM
  #74  
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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?
Old 08-02-2017, 08:58 AM
  #75  
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Originally Posted by warbird04 View Post
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?

Last edited by n8622t; 08-02-2017 at 04:22 PM.

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