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Supporting Owners, Builders and Pilots of the Thorp T-18 and its variants.
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 Post subject: 3 Tube main landing gear
PostPosted: Fri May 17, 2019 5:45 am 

Joined: Thu Apr 12, 2018 12:20 pm
Posts: 1

On my current project that I purchased, I noticed the landing gear differs to the original plans. It is made of 3 tubes on the gear legs (1"x0.188, 1.25"x0.120" and 1.5"x0.120") All other dimensions are per dwg-515 (Long landing gear.)

The 1" tube runs the full length of the main gear from top attach point to axle mount, with the 1.25" tubing fitting over this and it being about 2" short on both the top and bottom. It is welded to the 1" tube. The 1.5" tube is as per Dwg 515. Heat treating done as per the plans.

This landing gear has not flow yet, it was locally manufactured to replace a damaged LG. Has anyone seen this kind of design on a T18 A-frame? Trying to determine if it is worth using.


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20190514_194152_resized.jpg [ 869.9 KiB | Viewed 95 times ]
James Grahn
PostPosted: Fri May 17, 2019 9:25 am 
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Joined: Sat Oct 24, 2009 7:16 pm
Posts: 1076
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Location: USA
Not in my 21 years of flying these have I seen that type of gear.

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PostPosted: Sat May 18, 2019 10:55 am 
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Joined: Tue Oct 20, 2009 4:09 pm
Posts: 1509
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Location: Houston, TX
Looks way overbuilt to me .. gear is heavy enough as is. That one looks 50% heavier!

Lee Walton
Houston, TX

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