top of page

稱重並檢查測量船

用帶有所有配件的 A 鑽機給船稱重,就像在甲板上航行一樣 補丁 鬆散地放在 船。  它應該重4公斤

通過課堂規則並檢查測量船。  

Setting the boat to float on its lines

What you need to know

  1. Bring your fully rigged boat up to weight with correctors

  2. Float the boat on a calm day on a fish pond, pond, or deep bath and set correctors to put boat on its lines

  3. Check measure against class rules

The process

Weigh and check measure

  1. Weight the fully rigged boat dry.  Add two equal weight correctors on either side of the fin box at its centre to make up the weight of the boat  to 4 kg .  

  2. Float the boat and check to see it sits on its lines.  You may have to adjust the position of the correctors.  Once the boat is on its lines, mark and bond the lead corrector in with silicon sealer.  I have heard that some people put a small amount of lead in the radio pot so they can make adjustments to the corrector weight if they change a fitting.

  3. Pull a copy of the class rules from the HERE 

  4. Check measure as much as you can.  The one measurement you may have difficulty is with the overall length and depth from water line to bottom of fin.  This is done in a special tank.

Click here for Measurement and Certification Procedure

Thought for the day - Getting the most out of correctors

Given that we spend a lot of effort getting grams of weight off the foredeck and the mast to reduce pitching moment in a chop, I started thinking about how best to build the correctors. I am looking at roughly 400 gms of lead which I want as close to the centre of the boat fore and aft, but also as low down as possible. I looked at buying lumps of lead but ended up buying lead shot which I could fashion into shape with epoxy. My goal is to make correctors as flat as possible so they sit in the bottom of the boat.

 

The picture shows crudely the difference flat correctors might make. Small I grant but a difference none the less.

36 correctors.jpg
43 Making correctors.jpg

The top image shows the impact of square lumps of lead at the fin box when the boat is heeled over. The bottom picture show a flattened corrector. The arrows represent the centre of mass for each corrector. The flattened version has a centre of mass lower than the square corrector and in theory when the boat is at an angle the flattened corrector provides more righting moment.

 

All these weight changes I have made, are small. 11gms out of the jib boom, 30gms out of the mast and main boom, 200gms out of the hull of the boat, bigger and lower correctors. It all adds up to more righting moment and less pitching moment.

There is easy access to the base of the fin box if you take the winch down. It was easy to lay in two strips of velcro on each side of the hull and place the correctors on this. So now they are fixed but moveable.  Once you identify the correct balance point you can fix the correctors in permanently.

Moulding the correctors using epoxy and lead shot which you can get off eBay. Means you can shape your correctors anyway you like

51 The velcro for correctors.jpg
53 Corrector in place.jpg
52  Correctors in place.jpg

設置船漂浮在其線上

你需要做什麼 知道

  1. 使用校正器使您完全裝配好的船達到重量

  2. 在平靜的一天,將船漂浮在魚塘、池塘或深浴中,並設置校正器以將船放好

  3. 根據班級規則檢查措施

過程

稱重和檢查措施

  1. 稱重完全裝配好的船幹。 在鰭箱的兩側在其中心添加兩個等重的校正器,以彌補船的重量 到 4 公斤。 

  2. 使船漂浮並檢查它是否位於其線上。 您可能需要調整校正器的位置。 一旦船在它的線上,用矽密封劑標記並粘合鉛校正器。 我聽說有些人在收音機鍋裡放了少量的鉛,這樣他們在更換配件時可以調整校正器的重量。

  3. 從這里拉一份班級規則的副本 

  4. 盡可能多地檢查測量。 您可能有困難的一種測量是從吃水線到鰭片底部的總長度和深度。 這是在一個特殊的坦克中完成的。

單擊此處了解測量和認證程序

今日思考 - 充分利用校正器

鑑於我們花了很多精力從前甲板和桅杆上減輕重量,以減少劈砍時的俯仰力矩,我開始考慮如何最好地構建校正器。我正在查看大約 400 克的鉛,我希望它盡可能靠近船的前後中心,但也盡可能低。我考慮購買鉛塊,但最終購買了鉛丸,我可以用環氧樹脂將其塑造成形狀。我的目標是使校正器盡可能平坦,以便它們位於船底。

 

圖片粗略地顯示了平面校正器可能產生的差異。小我同意,但仍然有所不同。

上圖顯示了當船傾覆時方形鉛塊對鰭箱的影響。底部圖片顯示了一個扁平的校正器。箭頭代表每個校正器的質心。扁平版本的質心低於方形校正器,理論上當船處於一定角度時,扁平校正器提供更多的扶正力矩。

 

我所做的所有這些改變都很小。起重臂 11 克,桅杆和主臂 30 克,船體 200 克,更大和更低的校正器。這一切加起來就是更多的扶正力矩和更少的俯仰力矩。

如果您取下絞盤,就可以輕鬆接觸到翅片箱的底部。很容易在船體的每一側鋪設兩條魔術貼,然後將校正器放在上面。所以現在它們是固定的,但可以移動。

 

 

使用環氧樹脂和鉛丸成型校正器,您可以在 eBay 上購買。意味著你可以隨心所欲地塑造你的校正器

當天的想法 - 安裝校正器。

如果您取下絞盤,就可以輕鬆接觸到翅片箱的底部。很容易在船體的每一側鋪設兩條魔術貼,然後將校正器放在上面。所以現在它們是固定的,但可以移動。

 

 

使用環氧樹脂和鉛丸成型校正器,您可以在 eBay 上購買。意味著您可以隨心所欲地塑造校正器。

發布前的最後作業

這艘船是完全裝配好的,所有三個鑽機都是使用我的檢查單上註明的鑽機量尺和啟動設置進行設置的。無線電控制發射器已經過內部檢查,以確保沒有電線接觸到用於板和舵桿的萬向節。任何接觸都會在萬向節上產生非常奇怪的隨機行為。發射器上的無線電設置作為檢查表。

檢查了所有 3 個鑽機和安裝在 B 和 C 鑽機上的校正器的船重量。這些是我從 Sailsetc 購買的 10 克桅杆插件。因為我在 A 鑽機上節省了 20 克,所以我可以在 B 和 C 鑽機上少使用 20 克校正器。

我還在下層甲板的桅杆周圍貼上膠帶,以阻止任何側向運動,並添加修改後的跟部形狀以阻止桅杆旋轉,這樣在使用桅杆發射時,吊具就不會錯位。見下圖。

 

每艘船的總重量在 4004-6 克之間。

 

3 甲板補丁已經就位,所以她準備好在星期一開始她的第一次郊遊,這恰好是我的生日。濺船的好時機。

 

接下來的步驟是製定一個訓練和航行計劃,為國民和任何指標事件建立起來。

 

下面幾張圖。

bottom of page