{"id":5152,"date":"2017-02-26T11:41:55","date_gmt":"2017-02-26T15:41:55","guid":{"rendered":"http:\/\/foresthaveninn.com\/wordpress\/?p=5152"},"modified":"2017-04-27T09:41:28","modified_gmt":"2017-04-27T12:41:28","slug":"springs-rubber-bands-and-hi-starts","status":"publish","type":"post","link":"http:\/\/foresthaveninn.com\/wordpress\/?p=5152","title":{"rendered":"Springs, Rubber Bands and Hi Starts"},"content":{"rendered":"
<\/div>\n

<\/path><\/svg><\/i>  1,560 total views,  1 views today<\/p>\n

<\/div>\n

This is something I have been curious about for a while, sorry about the un sharp Pics<\/p>\n

Rules regarding 2 M RES etc, and the availability of different size rubber, and stretching the hi start to a max of 4 KG so that the airframes survive.<\/p>\n

Rubber with a higher spring constant K does not need be stretched as far as one with a lower value to exert the same force on a spring scale.<\/p>\n

Doubling 2 pieces of rubber may not give you a higher launch, of course there are other variables<\/p>\n

It is Potential energy in the Mechanism which effectively does the launch, of course the mass of the plane, winds air currents aloft, pilot ability also add to this.<\/p>\n

All things being equal though I believe a longer stretched rubber band will give a better launch then a shorter stretched one. \ud83d\ude42<\/p>\n

Even If the overall length is made equal with more line,<\/p>\n

\"P1190451-001\"

My two hi star rubbers<\/p><\/div>\n

\"P1190452-001\"

the 3 set of 2 bands (Hi Start B) stretches to 60 cm to yield 3 kg on the scale<\/p><\/div>\n

\"P1190453-001\"

the 5 x 1 piece rubber (Hi Start A)\u00a0 stretches to around 210 cm to the same 3 KG<\/p><\/div>\n

\"P1190454-001\"

The difference is 150 cm. So goes to say the rubber 3 x 2 needs an extra 150 cm of line to have the same length at 3 kg when anchored at the same location<\/p><\/div>\n

Now, of course there will be stretch in the line etc,<\/p>\n

Next step I added some fishing line and when I stretched it to 3 kg it cut thru the single rubber band Hi start A<\/p>\n

 <\/p>\n

Back to Square One<\/p>\n

 <\/p>\n

Haven’t proven anything yet, but surely when the rubber that is stretched out longer is released it will go farther then the one that isn’t stretched so far.<\/p>\n

Hence unequal Hi Start rubber while still fun, is not the same.<\/p>\n

Latest update, Launched these Hi Starts, 1 x4\u00a0 (Histart B Modded) and 2 x 3\u00a0 (Histart A)\u00a0 from the\u00a0 end of a pen, both stretched to yield 2 kg on the Scale.<\/p>\n

the 1 x 4 went 28 ft or so, and the other only about 1\/2 the distance , aimed for similar Trajectories as well<\/p>\n

\ud83d\ude42<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

<\/div>\n

<\/path><\/svg><\/i>  1,560 total views,  1 views today<\/p>\n

<\/div>\n

 1,560 total views,  1 views today This is something I have been curious about for a while, sorry about the un sharp Pics Rules regarding 2 M RES etc, and the availability of different size rubber, and stretching the hi start to a max of 4 KG so that the airframes survive. Rubber with a higher spring […]<\/p>\n","protected":false},"author":1,"featured_media":4891,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-5152","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/foresthaveninn.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/5152","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/foresthaveninn.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/foresthaveninn.com\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/foresthaveninn.com\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/foresthaveninn.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5152"}],"version-history":[{"count":6,"href":"http:\/\/foresthaveninn.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/5152\/revisions"}],"predecessor-version":[{"id":5169,"href":"http:\/\/foresthaveninn.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/5152\/revisions\/5169"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/foresthaveninn.com\/wordpress\/index.php?rest_route=\/wp\/v2\/media\/4891"}],"wp:attachment":[{"href":"http:\/\/foresthaveninn.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5152"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/foresthaveninn.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5152"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/foresthaveninn.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5152"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}