lifting IF boat

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kubal
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lifting IF boat

Inlägg av kubal » sön 14 nov 2010 11:33

Dear colleagues,

does anybody use the eye casted in the cast iron ballast block to lift the boat? I mean the eye located below the floor in the cabin. I have tried, but it has shown that it is located more backwards than the center of mass. Moreover, it seams to be below the center of mass, so the boat is instable when lifted using it. Is the eye intended for lifting the boat, or was it intended for lifting of the cast iron block during manufacturing only?

Thank you

David Kubal

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maja
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Re: lifting IF boat

Inlägg av maja » sön 14 nov 2010 16:12

You may use the eye moulded into the iron ballast, but you have to balance the boat as shown on the pictures.

See some alternatives below how a device for lifting may be designed. It is strongly recommended to mount additional eye-bolts for lifting and not use the chainplate bolts. It is also preferable for the lifting that the device is vertically as long as possible for the the lifting point of the crane to reach the vertical line through the centre of gravity without trimming the boat forward.
SWE 2059 Lyft med lyftstropp.jpg
SWE 2059 Lyft med lyftstropp.jpg (689.43 KiB) Visad 4951 gånger
Lyftstropp till IF-båt.JPG
Lyftstropp till IF-båt.JPG (77.27 KiB) Visad 4947 gånger
Marek, IF-båt SWE-829 "Ingela" från Lagunen i Malmö
Medlem i IF-båtförbundet sedan 1985
IF-båtägare sedan 1983

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kubal
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Re: lifting IF boat

Inlägg av kubal » tis 16 nov 2010 21:40

Dear Marek,

thank you, this is a great idea. I will try it the next year. The only think I do not understand fully is why the additional eye-bolts for lifting should be mounted. Until now I have been thinking that the chainplate eye-bolts for main sidestays (shrouds) are the strongest points in this part of the deck. So what is the reason? (Excuse me please, I do not understand the description in the article since it is in Swedish.)

David

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Johan SWE-1870
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Re: lifting IF boat

Inlägg av Johan SWE-1870 » ons 17 nov 2010 11:01

I think the reason for using separate lifting eye bolts is to not stress those to the rig. You can also lift the boat with the rig still on, if you want (I don't).

I lift my boat with the rig chainplate eye bolts.
Johan Winberg, SWE 1870 InFinit

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Re: lifting IF boat

Inlägg av rmegelas » tor 21 mar 2019 22:31

Hello, I am picking up on an old discussion and interesting discussion. Does anyone have a clearer version of this picture that could be read by OCR or anyone with an english translation. Many thanks to all. R

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maja
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Re: lifting IF boat

Inlägg av maja » fre 22 mar 2019 10:08

This article is to be found in Medvind Hösten (No 2) 1989, on page 27

>> http://ifboat.se/medvind?view=simplefilemanager&id=132

I will send you 2 pdf-files which are OCR readable. In the pdf-document, "mark all" and copy to Word or to Notebook.

I have made the OCR readings for you and they will also be sent as text files.

Now, use a web-based translator as Google Translate or similar to translate the Swedish texts into any language you want.
Marek, IF-båt SWE-829 "Ingela" från Lagunen i Malmö
Medlem i IF-båtförbundet sedan 1985
IF-båtägare sedan 1983

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