22.5" EP Fibreglass Arowana Mono 1 Racing Boat

Started by aquamatic80

185 updates 9 likes 4 comments 0 followers

Re: Model Boat Book

Yes please postage would be great unless you live anywhere near Gloucestershire. I will get that across to you now 😀 my address is:

8 south road
Sunny bank
Coleford
Gloucestershire
GL168EJ

Thanks again Roy!

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Re: Model Boat Book

That’s brilliant news Roy thank you, would be good to know where she was at present, i shall see if i can dig up some more information.

Regards
Jordan

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Re: Model Boat Book

Good evening Roy, thank you very much for the plan and the book, thankfully received 😊

Regards
Jordan

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Ronald #36 of 186

Re: my schooner

Your comments are very helpful. Gary Webb from bearspaceindustries who designed Emma, Annie, and others has sent me this email as I have poor math and physics knowledge.

Hi Ron,
It's easy to get the cart before the horse in this sort of project. Ideally, the design and calculations would be done before building a boat, but your schooner is already in the water.
Well beyond the drawing board and calculations stage. All that can be done now is to try stuff.
Lighten the hull if at all possible, add the heaviest bulb she can carry without too much loss of freeboard (hull remaining above water).
Hot Tip - For the models, I like to allow 1/2 the boat's weight to be in the bulb

Regarding her failure to come about in strong winds - I see only a blank page for the video you sent, but here are several possible scenarios.
1 - She may need a larger rudder, to turn her head into the wind.
2 - She may have a "helm balance" problem, That is the fore & aft placement of the sail plan over the underwater profile.
Try moving the sail plan aft or the fin keel forward, or maybe just reducing the size of her jib.
3 - She may be overwhelmed by the wind, just not having enough displacement (weight) to provide inertia to maintain momentum into the wind.

I can help with math for wind pressure on your schooner's sails, for what It's worth.
.004 x wind (mph) squared = pressure (lbs per sq ft)
.004 x (20 x 20)
.004 x 400 = 1.6 lbs per sq ft
---------------------
sail area (sq ft) x 1.6 (lbs per sq ft in a 20 mph wind)
2.145 (sq ft) x 1.6 = 3.432 pounds of pressure on her sails
--------------------------------------------------
Cheers,
Gary

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neilmc #37 of 186

Re: 40 Mhtz AM

Hi Roy,

That explains a lot as to why it’s not been taken 😂
So it will now be making its way to a land reclaimation project but luckily the cardboard and paperwork will be recycled 👍

Cheers Neil

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neilmc #38 of 186

Re: 40 Mhtz AM

Hi Roy

That’s an even better idea as they could actually benefit from it.

That’s the option I going with so cheers for the advice

Thanks Neil

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ChrisG #39 of 186

Gaff rigged Bella Pelican

I replied to your message about Pelican but seem to have lost it, no idea which pigeon hole it ended up in, did you by any chance receive it or would you like me to try again.
Regards ChrisG

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ChrisG #40 of 186

Re: Gaff rigged Bella Pelican

Hello Roy is your surname Verdun, if so we had several emails between us re Endeavour through MBM some years ago. If not sorry.
Regards ChrisG

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