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 Post subject: 整 DLG
PostPosted: 09 Apr 2004 10:22 pm 
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Joined: 26 Feb 2004 05:31 pm
Posts: 741
Location: 沙田
兩年前聽 Paul Wong 介紹﹐買左隻 Art Hobby Elster 1.5m HLG ( 好似呢隻 Hyper http://www.arthobby.com/gliders/specs/hyper.html ). 但係跟着見無人玩 HLG﹐ 所以就丟低左。呢排 DLG 咁人氣﹐ 於是就囉返出黎整﹐嘩﹗ 睇番隻機簡直唔似樣﹐重力力﹐ V尾 ﹐ 條尾通又短﹐ 完全唔似 fing 得既機。於是決定改裝下﹐重量無得搞﹐只係唸著加長條 aileron 到 full span, 又加長條尾通﹐同埋改十字尾﹐用全動尾板。

用炭纖卷條通黎駁長條尾失敗左一次﹐但第二次就掂。以為整塊水平尾板好容易﹐點知?

第一次用 3mm balsa 底面鋪一塊 0.75 oz 玻璃纖維﹐然後用 mylar 包著﹐再夾係兩塊玻璃中間﹐用兩舊大鐵壓實。呢 epoxy 乾左後撕走塊 mylar, 嘩﹗鏡面﹗好掂! 囉去磅下﹐大鑊﹗機頭要墜等同 3 個 servo 既鉛至可以定到個 CG﹗

第二次改用 2mm balsa, 仲踏登揀塊輕身既板﹐掃完 epoxy 後又用廁紙索走多餘既膠. 真係輕好多﹐但係由於太少 epoxy, 有D地方塊纖維浮起﹐又唔掂 !

唸左好耐﹐覺得可能係壓力唔夠﹐今次決定用真空袋﹐又放入暖箱焗著﹐等 D epoxy 稀D﹐容易D流。唔知係唔係兩塊玻璃擺得唔好﹐其中一塊焗焗下竟然斷開﹗ D epoxy 乾左 後囉塊尾板出黎睇﹐好彩無事﹐算啦﹗收貨啦﹗

塊 2mm balsa 未鋪纖維既重量﹕ 5.2g
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剛剛係真空袋囉出黎﹐面頭塊玻璃斷左
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撕走兩塊 mylar 後
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剪走邊邊D纖維﹐再磅下﹐重 8.4g
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但係同呢鬼佬仲爭好遠﹐ 人地可以做到 5.9g﹐ 強度仲高好多
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不過用呢個方法做出黎既尾板真係好直
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整 DLG 真係好似做珠寶咁﹐呢工夫極度幼細﹐我自問唔掂﹐都係買完成機實際D。 Angus, 我隻 Salsa 幾時到呀﹗


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 Post subject:
PostPosted: 09 Apr 2004 11:07 pm 

Joined: 02 Mar 2004 10:18 pm
Posts: 208
YC, 請問D玻璃纖維布是在那兒買的?


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 Post subject:
PostPosted: 09 Apr 2004 11:45 pm 
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Joined: 26 Feb 2004 05:31 pm
Posts: 741
Location: 沙田
hendry wrote:
YC, 請問D玻璃纖維布是在那兒買的?


我個D纖維布係好多年前係永利同雷達行買既 Mid West 同 K&B 產品。依家上環德昌有賣 Multiplex 既同樣重量纖維布。


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 Post subject:
PostPosted: 16 Apr 2004 09:31 am 

Joined: 03 Apr 2004 10:27 pm
Posts: 42
果然係高手,製作嚴緊,我都o岩o岩整好架競(速)用既dlg,就係重達450g既hyper-link﹗﹗﹗ :(
忠告各位如果砌dlg,唔好做咁多不必要既補強,唔係就好似我架新既航(空)母艦咁實淨,一架係地面多過係上面既飛機。 :evil:


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 Post subject:
PostPosted: 26 Apr 2004 08:19 am 

Joined: 03 Apr 2004 10:27 pm
Posts: 42
rocky wrote:
果然係高手,製作嚴緊,我都o岩o岩整好架競(速)用既dlg,就係重達450g既hyper-link﹗﹗﹗ :(
忠告各位如果砌dlg,唔好做咁多不必要既補強,唔係就好似我架新既航(空)母艦咁實淨,一架係地面多過係上面既飛機。 :evil:


架Hyperlink DLG掟左幾次后終於受唔起拉力,機翼下機肚比我掟到斯裂爆開,好一個雞蛋殼,又多一架飛斜坡機了。 :twisted: :evil:


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