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Author Topic: Milford Star, what engine should I use?  (Read 7730 times)

Capt Podge

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Re: Milford Star, what engine should I use?
« Reply #25 on: October 04, 2019, 06:13:29 pm »

... and mine has made its way to the 'holding dock' (spare room)  :embarrassed:  and still boxed up!


Regards,
Ray.
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David Boreham

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Re: Milford Star, what engine should I use?
« Reply #26 on: October 05, 2019, 07:57:34 am »

Ray,


Thanks for the link I have ordered an oiling tube from Model Boat Bits, do you know how long they take to deliver?  I am itching to get on now I have started.  At least I can start positioning the engine mounts rudder support etc.  Once again thank you for the link.


Kind regards


David
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Capt Podge

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Re: Milford Star, what engine should I use?
« Reply #27 on: October 05, 2019, 10:44:14 am »

Hi David,


I'm not sure about the delivery times although it's probably a couple of working days.


A note of caution :-
When you drill the hole, use light pressure only, you don't want to be drilling straight out the other side.
Also, if you haven't already done so, you could make a building cradle for the hull while you're waiting for the delivery - keeps the hull nice and steady while you work on it.


Regards,
Ray.
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David Boreham

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Re: Milford Star, what engine should I use?
« Reply #28 on: October 05, 2019, 10:51:07 am »

Ray,


I am currently using a cradle from another boat but it isn’t ideal.  How do I get the profile, my Dad suggested using card and by cutting strips in the card use that to mould around the Hull, using that as a template.  Unless anybody on here has a profile!


Regards


David
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David Boreham

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Re: Milford Star, what engine should I use?
« Reply #29 on: October 05, 2019, 10:56:39 am »

How spooky is that, I just received an email they are processing my order!


I was talking to Stan last night, I am amazed at his builds and can only aspire to reach his quality.  His wiring and layout is incredible.  I wish he was a little closer, I would make myself a real pest!


Good tip on drilling the prop shaft, I have a bench and a Dremel now so will take it slowly.


Regards


David
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Shipmate60

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Re: Milford Star, what engine should I use?
« Reply #30 on: October 05, 2019, 11:53:45 am »

Soft soldering with a large iron to get the solder flowing. Then drill out the spur.


Bob
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Capt Podge

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Re: Milford Star, what engine should I use?
« Reply #31 on: October 05, 2019, 12:41:57 pm »




I am currently using a cradle from another boat but it isn’t ideal.  How do I get the profile



I use a hard plastic profile gauge, bought at B&Q a few years ago, although I have used other methods such as soft wire coat hanger or those 'twisters' that are sometimes used to hang things from hooks.
Whatever you use, be careful not to press too hard, otherwise you will get a distorted result.
Once you have the profile it is then transferred onto card (I use card from cereal box) and use this as a template, test fit and once happy with the result transfer to your chosen medium - plywood for instance.
Hope this helps.


Regards,
Ray.
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David Boreham

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Re: Milford Star, what engine should I use?
« Reply #32 on: October 05, 2019, 01:13:55 pm »

Ray,


It does, I have just bought MDF but have now realised it isn’t waterproof!  Basic error.


Regards


David
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Capt Podge

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Re: Milford Star, what engine should I use?
« Reply #33 on: October 05, 2019, 01:25:12 pm »

If you go ahead with mdf make sure you wear a suitable mask - you don't want that in your lungs!


I seem to recall that there is a product for sealing mdf but can't remember what it was.


As for plywood, I think any thickness from 6mm up is good.
It is still advisable to wear a mask though, especially if you're working indoors.
Note: I hope I'm not 'teaching my granny to suck eggs'  here.  %)


Regards,
Ray.
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David Boreham

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Re: Milford Star, what engine should I use?
« Reply #34 on: October 05, 2019, 01:34:25 pm »

Ray,
Not at all, better warned.  I think I may go and get some 6mm ply.


Regards


David
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Subculture

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Re: Milford Star, what engine should I use?
« Reply #35 on: October 05, 2019, 05:25:41 pm »

A coat of resin or a couple of coats of varnish should seal up mdf well enough for this use.
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nemesis

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Re: Milford Star, what engine should I use?
« Reply #36 on: October 05, 2019, 06:05:00 pm »

If you silver braze to grease tube onto the prop tube please be aware that the heat will distort the prop tube. been there and done it. Far better to use soft solder, it is a  little more redeemable if it does not work out. I would gone with Steve at Model boat bits, grand lad and a good product, nemesis
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David Boreham

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Re: Milford Star, what engine should I use?
« Reply #37 on: October 05, 2019, 06:28:35 pm »

Nemesis,


I have ordered the oiling tube from model boat bits.


Ray,


I used the following method to create a template for my boat cradle.


I just need to cut it out from the ply wood.

[attachment deleted by admin]
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Capt Podge

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Re: Milford Star, what engine should I use?
« Reply #38 on: October 05, 2019, 06:46:53 pm »

Good stuff David - now, when the stand is made you will need some sort of cushion to protect the hull.
I usually use old mouse mat strips, glued on in stages with cyano (super glue). I've also used draught excluder but that tends to come adrift after a while.


Regards,
Ray.
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DaveM

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Re: Milford Star, what engine should I use?
« Reply #39 on: October 05, 2019, 07:10:02 pm »

On the matter of model cradles, I've had issues with most rubber/neoprene products after a while. Some of them mark the hull while one actually started to dissolve the paint! I now favour self-adhesive felt; this seems totally inert. If you need more padding then maybe apply the rubber/neoprene stuff and add a layer of felt on top.
Works for me.
Dave M
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David Boreham

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Re: Milford Star, what engine should I use?
« Reply #40 on: October 05, 2019, 07:35:21 pm »

Ray and David M, yes I had problems with draught excluder marking the Hull in the past as well. I was considering using some material as a damper.


Regards


David
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Mark T

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Re: Milford Star, what engine should I use?
« Reply #41 on: October 05, 2019, 07:46:31 pm »

I agree with the idea of felt - I use 3mm thick felt and glue it to the wooden cradle with Bostik glue. It works great and does not mark the hull even after a few years.  I think the piece if felt that I bought will last me a lifetime.

David Boreham

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Re: Milford Star, what engine should I use?
« Reply #42 on: October 05, 2019, 08:25:24 pm »

Mark,
I agree, I am going the felt route.


Regards


David
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Stan

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Re: Milford Star, what engine should I use?
« Reply #43 on: October 05, 2019, 09:38:22 pm »

Hi David all looks good. Looking forward to some pictures.


Stan.
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Stan

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Re: Milford Star, what engine should I use?
« Reply #44 on: October 06, 2019, 08:56:17 pm »

HI David look at this for the Missouri fitting out.

Stan. 
https://www.modelboatmayhem.co.uk/forum/index.php/topic,58769.0.html
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David Boreham

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Re: Milford Star, what engine should I use?
« Reply #45 on: October 08, 2019, 07:07:22 pm »

I am now looking at the prop shaft, it has a threaded end which I presume the prop mounts on and then an unthreaded end that goes into the universal joint.  The prop shaft is 4mm in diameter, my universal joint coupling spindle is for 4mm.  It fits on the threaded end but not the unthreaded end. So I guess I have to tap the end to make that also threaded? Help!
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Colin Bishop

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Re: Milford Star, what engine should I use?
« Reply #46 on: October 08, 2019, 07:12:28 pm »

It depends if your coupling is plain or threaded. You need an unthreaded (plain) coupling).

Most shaft inboard ends are unthreaded. The usual practice is to have an unthreaded coupling and perhaps also a collet to place between the couopling and the shaft tube.

Sounds like you need a new coupling.

Colin
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David Boreham

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Re: Milford Star, what engine should I use?
« Reply #47 on: October 08, 2019, 07:15:48 pm »

Colin,


I thought that might be the issue. At this rate I am going to end up with a draw full of bits!
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Dave_S.

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Re: Milford Star, what engine should I use?
« Reply #48 on: October 08, 2019, 07:20:08 pm »

Like the rest of us!
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Colin Bishop

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Re: Milford Star, what engine should I use?
« Reply #49 on: October 08, 2019, 07:21:13 pm »

Al modellers have drawers full of bits but they usually come in useful sometime down the line. My drawers full of bits go back to the 1970s and often solve current problems. I have a whole box full of couplings!

Colin
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