Model Boat Mayhem

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 31 
 on: Today at 02:57:14 PM 
Started by radiojoe - Last Post by radiojoe
Thanks Ian, I do like making gubbins  %% ,


Today started making the stays/shrouds etc. and stepped the mast then rigged the sails that I prepared between varnish coats and presto it's finished.
With the aid of a 15" fan for the "Wind" I tested the sail control, very pleased how it worked except this was my first venture into sail winches and soon realized I bought the wrong winch this one has 4 turns and is way too much for what is needed, I only need half the stick movement for full sail control, I could leave it but if I used too much stick letting the sails out the extra cord is prone to tangle, so I have a 2 turn winch on order that has the same shrouded drum so I can use the same drum on the new servo, Once this is done I'll wait for a day with light winds for her first sail.
On another note the Piercing saw I bought to cut the brass for the fittings has proved to be an excellent tool I was pleased when it came with 144 blades in 6 grades as I thought I'd probably use half of them, as it turned out I'm still on the first blade, it cut out all the fittings and the glazing for the little windows, a tenner well spent.


Joe

 32 
 on: Today at 02:24:11 PM 
Started by Martin [Admin] - Last Post by Tug Fanatic
Hi TF, Yes you can do that, but it can't be for sale on Mayhem AND Elsewhere concurrently.
  See:
https://www.modelboatmayhem.co.uk/forum/index.php/topic,35979.msg358942.html#msg358942

Edit: reworded Sales Rles TF......  item 3.  -  https://www.modelboatmayhem.co.uk/forum/index.php/topic,9048.0.html

 


I still read it as that you cannot have something on "my sale elsewhere" if it has previously been on Mayhem even if it isn't on Mayhem now.

 33 
 on: Today at 11:55:57 AM 
Started by marco - Last Post by SteamboatPhil
Tres Bien  :-))

 34 
 on: Today at 11:40:42 AM 
Started by Sonparc - Last Post by Shipmate60
Is it a radio controlled model or display model in a display case.


Bob

 35 
 on: Today at 11:40:28 AM 
Started by Sonparc - Last Post by plastic
Depends on what you call high value.      Boats seem to sell well on Ebay in the sub 1000 range.     Also, are you prepared to pack it up and post it and accept all the risks and hassles that could come with that?       That might get you a slightly better price.       I only sell with the stipulation of collect only - and people seem to be willing to travel for the right model.

 36 
 on: Today at 11:23:06 AM 
Started by Sonparc - Last Post by Sonparc
Hi All
Does anyone have any advice or suggestions as to how or where  to sell a high value model boat please ?

 37 
 on: Today at 11:04:18 AM 
Started by nemesis - Last Post by tr7v8
I am not sure that this is right. As brushed electric motors rarely run at more than 60% efficient (& often a lot less) you would need nearly double your 7 amps on 12v so lets call it 150 watts.

Neither am I sure that you can extrapolate a full sized petrol outboard to give you results for a model motor which could be in a much higher state of tune.

Am I wrong?
No perfectly correct. Assuming a modern Schnurle ported 2cc glow, max would be 0.25 to 0.3BHP which is around 150BHP per litre (very high by full size standards), a sport engine or an old diesel would be less. So .25BHP is 0.746  x .25 is .186kW or 186Watts. At 9.6V that would be 19.3Amps assuming 100% efficiency. At 60% or so it would be 32Amps & 309Watts. That needs a reasonable size brushless to give that output. And would probably be on a higher voltage supply for that.
This on 14.4V would work.
https://www.4-max.co.uk/po-3535-870.html

 38 
 on: Today at 11:01:27 AM 
Started by nemesis - Last Post by tonyH
I agree with a motor under load but assume the figure are no-load. I had a Hummingbird years ago but I can't remember for the life of me what it was in or how it went.
The numbers came from this and I can claim absolutely no accuracy! www.slkelectronics.com/ecalc/motors.htm
Seems that they were used a lot in e-flight so would/should be quite revvy possibly?

 39 
 on: Today at 10:57:05 AM 
Started by Martin [Admin] - Last Post by Martin [Admin]

September Update:

We've separated out the discussion of Mayhem funding:
Keeping Mayhem Afloat !
https://www.modelboatmayhem.co.uk/forum/index.php/topic,65690.msg687982.html#msg687982


New topic for your model boat sales off Mayhem, e.g.  eBay / Facebook / Gumtree / Etsy / Craigs list etc.-
New Sales 'Board',  My Sale Elsewhere!

 https://www.modelboatmayhem.co.uk/forum/index.php/topic,65695.0.html

Sales rules amended to reflect above - https://www.modelboatmayhem.co.uk/forum/index.php/topic,9048.msg701347.html#msg701347

 
Admin   :-)
 


 40 
 on: Today at 10:44:53 AM 
Started by Martin [Admin] - Last Post by Martin [Admin]
Martin

I think that the new for sale elsewhere is a great idea but why have you excluded items removed from Mayhem.

I would have thought that if someone had given members the first chance to buy something but then removed it from Mayhem so that they could advertise it elsewhere then it could go in the Mayhem for sale elsewhere listing.

It is quite possible that I have read it wrongly & this is not what you meant.

Hi TF, Yes you can do that, but it can't be for sale on Mayhem AND Elsewhere concurrently.
  See:
https://www.modelboatmayhem.co.uk/forum/index.php/topic,35979.msg358942.html#msg358942

Edit: reworded Sales Rles TF......  item 3.  -  https://www.modelboatmayhem.co.uk/forum/index.php/topic,9048.0.html

 

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