Top Oil Cooler Conversion

Discussion of the Aerovee kit engine.

Re: Top Oil Cooler Conversion

Postby Bryan Cotton » Sun Mar 04, 2018 4:51 pm

Mike,
How about in terms of CHT? I think the lower hole would be detrimental to cylinder cooling.
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23
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Re: Top Oil Cooler Conversion

Postby MichaelFarley56 » Sun Mar 04, 2018 5:06 pm

Good question Bryan. Again, I noticed little change overall.

If I get a chance here soon, I’ll try to perform a quick test and do a test flight with the cover plate installed and then again with the plate removed just to see what, if any, differences there are. Hopefully I can get out to the airport and try it!
Mike Farley
Waiex #0056 - N569KM
Jabiru 3300A #1706
MGL Panel
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Re: Top Oil Cooler Conversion

Postby mike.smith » Mon Mar 05, 2018 12:44 am

Bryan Cotton wrote:How about in terms of CHT? I think the lower hole would be detrimental to cylinder cooling.


I wrote about engine temps on my Kitlog page:

http://www.mykitlog.com/users/display_l ... 932&row=11
http://www.mykitlog.com/users/display_l ... 933&row=10
Mike Smith
Sonex N439M
Scratch built, AeroVee, Dual stick, Tail dragger
http://www.mykitlog.com/mikesmith
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Re: Top Oil Cooler Conversion

Postby Bryan Cotton » Sat Oct 26, 2019 1:17 pm

Question: how did you guys safety the two long bolts through the oil cooler? I see 3 options:
1) Don't bother.
2) Drill holes in the bolt heads for safety wire.
3) Make a little piece of metal to match the two bolt holes and have bendable locking tabs on it.
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23
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Location: C77

Re: Top Oil Cooler Conversion

Postby Area 51% » Sat Oct 26, 2019 1:35 pm

Went with the swiss cheese heads. Couldn't justify doing nothing, and the cowl already touches the bolt head, so no room for the tab option. AN4H-26A if you don't have any better luck than I do drilling through the heads.
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Re: Top Oil Cooler Conversion

Postby Rynoth » Sat Oct 26, 2019 10:32 pm

Bryan Cotton wrote:Question: how did you guys safety the two long bolts through the oil cooler? I see 3 options:
1) Don't bother.
2) Drill holes in the bolt heads for safety wire.
3) Make a little piece of metal to match the two bolt holes and have bendable locking tabs on it.


I went with #1, with a dab of torque-seal indicator like all the other bolts/nuts on the engine. Used standard AN4 torque:

http://www.supercub.com/pdf/AN%20Bolt%20Torque.pdf
Ryan Roth
N197RR - Waiex #197 (Turbo Aerovee Taildragger)
Knoxville, TN (Hangar at KRKW)
My project blog: http://www.rynoth.com/wordpress/waiex/
Time-lapse video of my build: https://www.youtube.com/watch?v=Q8QTd2HoyAM
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Re: Top Oil Cooler Conversion

Postby mike.smith » Sun Oct 27, 2019 11:00 pm

Bryan Cotton wrote:Question: how did you guys safety the two long bolts through the oil cooler? I see 3 options:
1) Don't bother.
2) Drill holes in the bolt heads for safety wire.
3) Make a little piece of metal to match the two bolt holes and have bendable locking tabs on it.


I went with Option 1. 2.5 years and not so much as a hair of movement.

For that matter, the ONLY places on the entire plane where I have safety wire are:
1. The bolts holding on my AeroInjector air filter
2. The AeroInjector itself has a safety wire holding it to the intake tubing just in case a backfire tries to blow it off.
3. Between the joints between the two exhaust pipes (in case the springs fail).

Other than that, none, just as (not) called for on the plans. After 5 years of annual condition inspections the only fasteners that have ever moved and I've had to tighten are the exhaust flange bolts. I have torque seal on most fasteners throughout the plane.
Mike Smith
Sonex N439M
Scratch built, AeroVee, Dual stick, Tail dragger
http://www.mykitlog.com/mikesmith
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Re: Top Oil Cooler Conversion

Postby Bryan Cotton » Thu Oct 31, 2019 10:20 pm

Thanks guys! Nothing probably would have been the best answer. I did this:
IMG_20191031_211252297.jpg


IMG_20191031_211719167.jpg
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23
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Re: Top Oil Cooler Conversion

Postby Bryan Cotton » Fri Nov 01, 2019 8:26 am

I wish that oil cooler was one row shorter. I can't get the top hinges together to pin. Looks like I need to clearance the top sheet metal some more.
Bryan Cotton
Poplar Grove, IL C77
Waiex 191 N191YX
Taildragger, Aerovee, acro ailerons
dual sticks with sport trainer controls
Prebuilt spars and machined angle kit
Year 2 flying and approaching 200 hours December 23
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Bryan Cotton
 
Posts: 4957
Joined: Mon Jul 01, 2013 9:54 pm
Location: C77

Re: Top Oil Cooler Conversion

Postby Sonex1517 » Sat Nov 02, 2019 9:01 am

Bryan,

I had to file a chamfer at about 45 degree angle on the top front. It actually went as far as the first bit of the fins.

Your mileage may vary.
Robbie Culver
Sonex 1517
Aero Estates (T25)
First flight 10/10/2015
325+ hours
Jabiru 3300 Gen 4
Prince P Tip
Taildragger
N1517S
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