Tuesday, July 30, 2019

1st Oshkosh

One of the many fly-overs

Icon Aircraft is based in Vacaville CA, and assembles there. Many Components built in Tijuana, Mexico

Attention to detail


Long-Easy resting nose down to avoid tipping backwards due to wind

F35 aside a B-17

A plane if designed by Salvador Dali

Thursday, July 4, 2019

1/4" Dyneema Amsteel 12 Strand Eye Splice for Standing Rigging (Hobie 20)

[See Article on this Blog Titled" "Amsteel Dyneema Stretch"]

12 Strand Amsteel/Dyneema Eye Splice
https://www.youtube.com/watch?v=EjR4E_91txk

Brummel Splice
http://atlanticbraids.com/dyneema-brummel-eye-splice-1-end/
https://www.youtube.com/watch?v=d0B6tYTVHVM

2nd End
https://www.youtube.com/watch?v=fIR5JdQ7TEo
https://www.youtube.com/watch?v=IxSi8igfChk
https://www.youtube.com/watch?v=4WW7Qvg3VjI

Hobie Side Shroud Length: 23' 5 & 1/4" [7.14375m]
Additional Length Required for Splice: 1.5ft
Total Length required for 2 Eye Splices: 26.5 ft approximately.

Shrouds / Stay Length
https://static.hobiecat.com/2010_archive/support/pdfs/WireGuide.pdf
My measurements in meters / mm:
Side: 7.135m (7135mm) -> Shorter better to allow stretch and adjustment -- 6.8m
Fore: 6.335m (6335mm) -> Now measuring about 6m to have adequate tension

https://smallboatsmonthly.com/article/synthetic-fiber-rigging/
https://www.apsltd.com/aps-advisor/types-of-eye-splices-for-braided-line/


https://www.youtube.com/watch?v=_r-6pjTE3Qc

7/29/19 Update:

I've installed the stays and they were not exactly the same length, but close enough (a few inches) so that they could be adjusted by the side-hole adjuster. Next, I'm going to work on the forestay replacement as dyneema is much easier to work with.

9/16/19 Update:
 Amsteel stretches 1 to 1.5 feet per 22 feet of 1/4" line.This must be taken into account when determining line lengths, and lashing adjustability shoudl be built-into the design for tensionning. I lash with 7/64 amsteel, use 1/4" Stainless thimbles (316) and take 4 lashes around for an expected strength of 4* 1600 lbs = 6400 lbs (2909 kgf).

10/4/19 Update:
See this article about how the rigging looks: http://porsche924s1987.blogspot.com/2019/09/dyneema-rigging-pictures.html