Re: X Air Hanuman bungee cord rear landing gear and sail cloth
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I did own a XairH called Hawk in UK. Very nice aircraft but I considered the main undercarraige to have poor geometry. I measured my old bungee at 1460mm x 10mm over the loops. It needs maximan stretch (4 1/2 turns from memory) on all 4 to avoid aircraft sagging and that can be a struggle. I tried using 12 bungee I had to install longer bolts to accommodate the thicker bungee. Worked OK for a while but the bolts bent under the strain so reverted to original. I found using original bungees they had to be so tight that they were at their limit of elasticity. I bought the cord from ebay but had to experiment with length to get the best fit.? I tried some years ago a uv treatment for Dacron. I cut 2 new blue samples and pinned them to board, left in sunny position all summer, treated sample No. 1 every month 2nd was untreated but half masked from sun. After 8 months the treated sample had faded same as no. 2.? I was in France years ago and a French flying Instructor told me his Dacron covered planes were all sprayed with polyester paint on exposed surfaces from new and they were left outside all season and appeared in good condition fabric wise. No real answer other than to keep it in hanger when not flying and you could get 10 years use. Some colours are more prone, blues, reds etc. Whites probably better but I have no data.? Steve? On 20 Nov 2021 04:22, Justin Gregoris <jgregoris789@...> wrote: Good day everyone, |
Steve Rance