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Author Topic: SG&K 1920 Gentleman's Runabout MK2  (Read 7703 times)

canabus

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SG&K 1920 Gentleman's Runabout MK2
« on: June 24, 2017, 09:31:15 AM »

Hi Fellow Modellers
I am starting this boat which is a bit larger at 860mm with a few mods.
I am placing the brushless motor and ESC under the dash.
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canabus

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #1 on: June 24, 2017, 10:02:23 AM »

Hi All again
Adding a few more pics.
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canabus

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #2 on: June 26, 2017, 07:58:58 AM »

Hi All
Only installed the battery floor and mounted the servo today.

Canabus
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pompebled

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #3 on: June 28, 2017, 11:29:58 AM »

Hi Canabus,

Good to see you've decided to go for a long propshaft to keep the angle as small as possible.

Do you have a picture taken from the side so the actual angle can be seen?
Aim for less than 7 and you should be good.

Which motor are you going to use?

Regards, Jan.
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canabus

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #4 on: June 28, 2017, 02:12:12 PM »

Hi Jan
The plan is to use a 3639-1100kv 800watt 35mm brushless motor,3S Lipo Battery,60 Amp car ESC with a 3 blade 37mm CNC alloy prop.
Moving the motor to under the dash/windscreen is more of getting the balance of the boat right.
The shallow angle of the drive will help also.
I am not looking for super speed, but, looking for the boat to look right on the water.
Old boats can go faster than they thought in the day because they did not have the motors etc. that we have today.
My little Aerokits Sea Hornet on scale speed looks the just right, but, switch to sport mode on my radio it is a sleeper and clocks in at 45KM1!!
No trim tabs only a small bit of lead under the front seat.

Harry
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pompebled

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #5 on: June 28, 2017, 02:53:08 PM »

Hi Harry,

I looked up the motor and I'm curious how you're going to mount it.
Is the aluminum flange in the picture an aid to get the allignment right, or will the motor be bolted onto it?
Or are you planning on removing the motorshaft and stick the 5 mm propshaft through the motor, so there's no coupler involved and subsequently no allignment issues?

I've seen that done in a large tugboat, spectacular quiet drivetrains...

Regards, Jan.
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canabus

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #6 on: June 29, 2017, 03:30:43 AM »

Hi Pompebled

The aluminium  flange is my designed alignment tool, this will be removed and the motor with a solid aluminium 5mm to 4mm coupler.
I will post a few pics in a couple of weeks has I am working on the dash and cockpit at present.
I have work out I have enough room to install the motor with the coupler in one go.
I will not have room for the sister motor as this are longer(3648-1450kv).

Canabus
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pompebled

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #7 on: June 29, 2017, 02:46:30 PM »

Hi Harry,

If you have access to a lathe, you could easily make a motorflange like companies like Hydro&Marine sell:
https://hydromarine.de/index.php?language=en&cPath=6_31&MODsid=enm2cf7e329po2cu4dvsmfd8o3

The motor is bolted onto the flange, alligning isn't an issue anymore.
Installing the motor in tight spaces is easy, as you can tighten the coupler while inside the flange.

I've seen builders use the flange and stuffing tube, omitting the coupler, the (longer) shaft goes through the motor (after the stock shaft had been removed...).

I have a sketch of the flange on my HD, let me know if you want it.

Regards, Jan.
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canabus

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #8 on: June 30, 2017, 07:51:09 AM »

Hi All
Only adding a few more pics.
You can see the stack of room under the dash area.

Canabus
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canabus

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #9 on: July 04, 2017, 09:51:23 AM »

Hi All
Installed the motor and made the ESC floor.

Canabus
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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #10 on: July 04, 2017, 08:34:27 PM »

That is coming along lovely!

Those passangers look 'ard. I hope your boat isn't being used for organised crime! We'll have no gangster business here, people's hot water bottles have been going missing for a while as it is.
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canabus

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #11 on: July 05, 2017, 05:35:26 AM »

Hi Mate
These Guys recover HOT WATER BOTTLES and  tune up naughty light fingers !!!
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canabus

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #12 on: July 07, 2017, 11:36:18 AM »

Hi All
Added a few more stringers and started skinning the boat.
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canabus

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #13 on: July 07, 2017, 11:37:56 AM »

Oh the pics !!!
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pompebled

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #14 on: July 07, 2017, 03:16:39 PM »

Hi Harry,

Good idea to use supermagnets (I assume that's what they are) to aid in clamping!
How does it work out?
Does it really gives you enough pressure to squeeze out the excess glue?

Regards, Jan.
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canabus

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #15 on: July 08, 2017, 12:58:31 AM »

Hi Pompebled
The super magnets work great, but, I see a problem getting them in and out in the stern.
I will have to think of something over a few pints!!!!
More than enough pressure!!!
Harry
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canabus

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #16 on: July 12, 2017, 08:49:16 AM »

Hi All
More planking on the boat and the cheap Hobbyking magnet are working great!!!
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canabus

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #17 on: July 14, 2017, 12:30:12 PM »

Hi All
Still planking !!!!
The custom rudder is the next thing on the list and I have a surprise for your all on this one !!!!!

Canabus
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canabus

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #18 on: July 15, 2017, 09:33:56 AM »

Hi All
The rudder arrived with double everything and oiler via the flag post!!!!
The looks better than the rectangle one on the original and fits with the stern shape.
Canabus
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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #19 on: July 17, 2017, 04:26:19 PM »

That is a neat idea  :-)) I love the shape of the hull and the diagonal planking, very swish.
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canabus

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #20 on: July 19, 2017, 11:05:10 AM »

Hi All
After fibre glassing all the insides at the bow except for the top of the frames, I covered the underside of the deck with wood glue(waterproofing) and add wood glue to the top of the frames.
Applied the deck and added a stack on lead weight to the top of the deck.

Canabus
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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #21 on: July 19, 2017, 10:39:33 PM »

It looks quite Jules Verne like from the stern with the exposed frames. She has a beautiful shape and can't wait to see some planks going on the deck  :-))
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canabus

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #22 on: July 21, 2017, 08:53:57 AM »

Hi All
Installed the rudder!!!
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canabus

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #23 on: July 22, 2017, 09:38:04 AM »

Hi All
I play around with the decking and as it was a warm winters day I cracked out the spray can and undercoated the bottom.
Canabus
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canabus

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Re: SG&K 1920 Gentleman's Runabout MK2
« Reply #24 on: July 28, 2017, 09:25:51 AM »

Hi All
Made up a few 10mm magnets with wire handles to add the planks on the stern.
These have worked very well and the wire can be bent as required .

Canabus
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