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Hang Glider Helmet & Head Support System
Date(s): 2016.06.09. Album by NMERider. Photos by NMERider. 1 - 27 of 27 Total. 1977 Visits.
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2016-06-08 (711)
In normal flight mode the system produces about 2.2LB or 1kg of lift (upward pull) on the helmet.

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2016-06-08 (1) Helmet Pulley
Notice there is almost no slack in the system when my helmet is right up against the upper-most pulley?

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2016-06-08 (3) Helmet Pulley
During launch run the system is taught and producing about 1LB of lift on the helmet.

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2016-06-08 (1055) Helmet Pulley
In fast glide mode the pull increases a little over 1kg but the effect on the harness balance is negligible.

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2016-06-08 (1925) Helmet Pulley
At 66mph in 3/4 VG with harness unzipped. This makes is very easy to hold my head level.

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CAM01918
The helmet bridle system.

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CAM01927
Helmet bridle and floating pulley.

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CAM01941

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CAM01926
1/16" diameter accessory cord is sewn to soft* Velcro that makes with adhesive-backed Velcro carefully aligned on the helmet shell.
*Stiff Velcro will tear along the stitch line. Don't use it.


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CAM01925
This is where the helmet hangs in space. In flight, more than the weight of the helmet is being supported.

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CAM01915

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CAM01912
Latex tube connection is via 1/8" Pop Rivet bodies with the heads cut off.

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CAM01922
Latex tube is terminated to a loop of 1/16" utility cord that is draped over the keel in a lark's head hitch. KISS.

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CAM01923

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CAM01916
KISS on the front pulley attachment.

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CAM01917

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CAM01921
By using 1/8" aluminum tube sections inside the 1/16" I.D. latex tube the suspension line moves through the pulley without snagging.

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CAM01920
Hang strap pulley attachment. KISS once again.

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CAM01940
These are fantastic pulleys for running the latex tube through. I buy mine from West Marine.

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CAM01943
this was a 50' roll of 1/16" I.D. x 3/16" O.D. latex tube from Kent Elastomer. Best quality. I paid ~$33 from Spearitco on Amazon.com

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CAM01942
Part number for latex tube.

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CAM01944
I use ~77-1/2" of latex tube. You can use more of less depending upon your flying style or application.

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CAM01939
2, 1/8" x 1/2" aluminum Pop Rivet shafts that have been rounded inside and out. Tip end of cord is carefully melted so it won't pull through under normal tension.

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CAM01934
Dip latex into isopropol before pressing over rivet shafts.

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CAM01936
Insertion process

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CAM01937
Press slightly farther than needed to cover rivet shafts.

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CAM01938
Terminated end of latex to 1.5mm accessory cord.

 
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