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[Shipmate60]

That does look better Ken.

Bob

[Tug-Kenny RIP]

Funny ol Hobby with it's ups and downs.  That's why I ask the collective on here  as two heads are better than one.


ken

[Shipmate60]

Kenny,
With 35mm props you will need 10,000+ revs to give decent performance on this heavy model.
It should be heavy when ballasted down to her marks and these are not a fully planing hull so not too much bow lift.

Bob

[thunderchild]

Good Day Kenny

I've been watching this build with interest, as I'm getting the bits together to build a "D" boat, unlike you I don't have the patience to build from scratch, I bought my hull from Kingston Mouldings, Robin from kingston suggested putting 4 x Graupner Speed 500E in to get it a scale speed.

Have a look at the performance on the video's on his website.
http://www.kingstonmouldings.com/pdfairmiled.htm


Below are the drawings from the shaft arrangements.





Richard

[gra2]

G/day Ken

Couple of photos as promised.







Gra

[gra2]

G/day Richard

If you look on page 3 you will see a Kingston hull build started by Frank M.


gRA

[thunderchild]

Good Day gRA

Thanks , been watching that one too.

Richard

[Tug-Kenny RIP]

G/day Richard

If you look on page 3 you will see a Kingston hull build started by Frank M.


gRA

Hi Gra,

Where is this please.  The Kingston site doesn't play for me as the files are shielded from me by my security system.

Thank you for the pictures. I shall be using your guide to proceed with mine.

Hi Richard,

Thank you for the drawings. Just confirms the tight fit under the hull.  By using the recommended 35mm props mine will be below the keel line due to my rubbish build of the hull.  Not to worry though, as long as it sails.


The motors are proving a challenge as I want to use 12 volts. I have two 600 motors at this voltage but the other two 600's are marked 8.4 volts. They run faster on 6 volts than the others on 12 volts ??? 

I am considering running them in series from 12 volts. I have been looking at the shops trying to find the 12 volt versions but drawn a blank.  Any suppliers out there. ?

[gra2]

Ken

Go to page 3 of this section build started by Frank M.
You will find two entries started by Frank on page 3.

Gra

[Tug-Kenny RIP]

Page 3 of what ?  Are you referring to the Kingston site ?

[gra2]

Ken

Page 3 of this column Warships Navy Military.

Gra

[essex2visuvesi]

Its probably a bit late now but would some low KV brushless outrunners do the job?
Something like 4 of these?
http://www.hobbyking.com/hobbyking/store/__16229__NTM_Prop_Drive_Series_28_30A_750kv_140w.html

[Tug-Kenny RIP]

Thank you Gra.

Here's the reference.  http://www.modelboatmayhem.co.uk/forum/index.php?topic=31895.0

This is a rather excellent build and it encouraged me to proceed.

                  Is Frank M still on the forum ??

Thanks for the heads up Essex, but I've never done  'brushless'  so I'll go the way of Brushed 600's for now. I've got 2 and looking for the other 2 @ 12 volt.

I've been all day fitting the external Propshaft supports and trying the line, to get it perfect. No glueing yet as I'm tampering with the motor end and lining it all up.  Great fun. Lots of sawdust and gaffer tape but it's looking the part now.   

[Tug-Kenny RIP]

Here's the pictures  showing ready to glue in.  Because the hull is almost straight at the base you will notice the larger than usual slots for the prop tube entry. I will fill these, when the time comes with fibreglass.

[derekwarner]

Good morning Ken.....do you have any fear of the center two props cavitating  &  fighting for water?  ......Derek

[thunderchild]

Good Day Kenny

The motors are proving a challenge as I want to use 12 volts. I have two 600 motors at this voltage but the other two 600's are marked 8.4 volts. They run faster on 6 volts than the others on 12 volts ??? 

I am considering running them in series from 12 volts. I have been looking at the shops trying to find the 12 volt versions but drawn a blank.  Any suppliers out there. ?

When you talk about a 12 volt version are you talking about the motors, try Cornwall Model Boats, http://www.cornwallmodelboats.co.uk/acatalog/graupner_3302.html

The video's from Kingston Model Boats are attached below.

http://s1221.photobucket.com/albums/dd468/Rogue-Wolf/?action=view&current=fairmileDmovie1.mp4

http://s1221.photobucket.com/albums/dd468/Rogue-Wolf/?action=view&current=fairmileDmovie2.mp4

http://s1221.photobucket.com/albums/dd468/Rogue-Wolf/?action=view&current=fairmileDmovie3.mp4

Do you have a copy of Anatomy of the Ship - The Fairmile D Motor Torpedo Boat, I've found it very useful.

Richard

[Tug-Kenny RIP]

Good morning Ken.....do you have any fear of the center two props cavitating  &  Oh Yeah fighting for water?   ......Derek 

Hi Derek.

Hopefully not, as this how the real one looks. I assume they are fed with extra water from the two in front.

It does bring me to my next question however.  Which way do they turn,  in or outwards ?

cheers

[Tug-Kenny RIP]

Thank you for the information, Thunderchild. I enjoyed the films.   

Also thanks for the heads up on Cornwall boats for the motors.  Funny, I looked but I didn't see them in the list ??     I started ordering the props and when one wasn't in stock it killed my order.  Evidently they don't take orders in advance.  I shall try again soon.

Cheers

[Tug-Kenny RIP]

Still a problem getting hold of the Props, but I am proceeding by securing down the tubes.

First I taped over these gert big holes and filled the inside section with epoxy.  Today I removed the tape and filled over the tubes on the outside with P38 and will shape them when it's dry.

[Stavros]

OH KEN go into the corner AGAIN, and write down 10 million times I should NOT have used P38 as it is so so difficult to rub down and STAV told me so


Dave

[Tug-Kenny RIP]

I did think long and hard on this one Stav and decided on P38 for it's toughness. 
                          You know how I drive.   

I have the power tools to grind it down smooth so I will let you know how I get on. The epoxy had dribbled through to this side, as expected, but it didn't like sanding at all. It went all so rubbery that I could trim it with a knife. This led me to my decision to cover it from the outside with something sturdier.

Thank you for mentioning it. Keep em coming. 

[thunderchild]

Good Day Kenny

If you're in a hurry for your props, try Float a Boat in Australia, Raboesch props 35mm, 3 blade, 'D' Type 35.9mm Pitch, approx (Au)$20.50. www.floataboat.com.au

Richard

[Tug-Kenny RIP]

Thank you for that , Richard.  It was just last night I placed my order for 35mm brass props along with some 600 motors and two rudders.  (£90)   

I was going to scratch build the rudders but decided to get a move on and save time. I shall be shaping them as per the drawings so they should be Ok.

Today I sanded down the filler on the prop tubes and was called away to go shopping, so I've finished for the day as it was heavy bags and I'm now done for.   

[Tug-Kenny RIP]

Today I fitted the new propellers and lined up the rudders.  The rudder blades were a bit too long, so I've trimmed them down since the picture was taken.

I've fitted the steering arms and linked them up to the servo.  Notice the aluminium tube over the long shaft to stop flexing.  The servo is located that far into the boat as there will be a secured deck above and this will ease maintenance.

[Tug-Kenny RIP]

Looking at the enlarged pictures, I see that there is room to fit 40mm props should I require any  'grunt'.    I'll see how the 35's get on first of all.