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Author Topic: Threadlock on propshafts?  (Read 4162 times)

Paul2407

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Threadlock on propshafts?
« on: April 11, 2017, 10:34:37 am »

Would anyone recommend the use of threadlock on a propshaft to help stop the prop undoing itself I have both medium and high strength but never heard anyone use them so was wondering if there was a reason for it.

Cheers
Paul
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Fred Ellis

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Re: Threadlock on propshafts?
« Reply #1 on: April 11, 2017, 10:58:13 am »

Do it all the time :-)) , just use the medium.


Fred
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Colin Bishop

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Re: Threadlock on propshafts?
« Reply #2 on: April 11, 2017, 10:59:11 am »

But don't forget the locknut!

Colin
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Paul2407

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Re: Threadlock on propshafts?
« Reply #3 on: April 11, 2017, 11:09:08 am »

Cool thanks chaps  :-)) I will use medium then

Colin did I read correctly you built a model of the wightlink ferry? do you still have it? I was mulling over the possibility to build one for my next project
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Colin Bishop

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Re: Threadlock on propshafts?
« Reply #4 on: April 11, 2017, 11:30:32 am »

Yes, I built Shanklin back in 1984 or so. My model was to 1:72 scale. I bought the plans from the National Maritime Museum. The Model Boats Plans Service plan was drawn up by Dave Metcalf using the NMM plans for reference. I have a pdf file of the original build article if you are interested and PM me your email.

If I built her again I think I would make her a bit larger as the model is quite small really. I still have my model, long retired now! The widely spaced props and twin rudders made her very manoeuvrable.

Colin
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Paul2407

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Re: Threadlock on propshafts?
« Reply #5 on: April 11, 2017, 11:50:27 am »

Ah that's a bit different to what I was thinking but a lovely model, did that sail between Ryde pier and Portsmouth Pier head?

I had in mind something more like the st clare car ferry
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Colin Bishop

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Re: Threadlock on propshafts?
« Reply #6 on: April 11, 2017, 12:12:25 pm »

Yes, Shanklin was on the foot passenger service.

I have travelled on St Clare a number of times and don't like the look of her myself, she is an ugly duckling with those great slab sides!

A model could be a problem as she is quite shallow draught and those high sides will be prone to stability and windage problems. On more than one occasion the actual ship has been forced to stay out in the Solent until the wind dropped sufficiently to dock safely.

St Clare is also propelled by Voith Schneider units and not conventional propellers.

Only one of the funnels is operational, the other is an air conditioning vent and there is nothing below it in the wheelhouse, see pic below.

Colin
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Paul2407

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Re: Threadlock on propshafts?
« Reply #7 on: April 11, 2017, 01:35:30 pm »

never noticed the funnels myself that's quite interesting been on the boat many many times along with her sister boats maybe one of those might be a little better as a model as the sides are not as high, plenty of investigation to do I think before actually building it
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phil_parker

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Re: Threadlock on propshafts?
« Reply #8 on: April 11, 2017, 06:04:53 pm »

Back to the OP. Do you use a locknut? That should stop the problem.

I prefer superglue to thread lock as it is strong enough to do the job but the joint can be broken if you really need to.
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Paul2407

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Re: Threadlock on propshafts?
« Reply #9 on: April 11, 2017, 06:09:42 pm »

Back to the OP. Do you use a locknut? That should stop the problem.

I prefer superglue to thread lock as it is strong enough to do the job but the joint can be broken if you really need to.

Hi Phil,
Yes I do use locknuts and don't really have a problem not lost a prop yet!! but it was more a question if it could be used as an added precaution
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T33cno

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Re: Threadlock on propshafts?
« Reply #10 on: April 11, 2017, 06:53:31 pm »

I use Loctite 243 cos its free  {-)
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Paul2407

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Re: Threadlock on propshafts?
« Reply #11 on: April 11, 2017, 06:55:46 pm »

I use Loctite 243 cos its free  {-)

Yes I use Bondloc 243 cos it's free too  {-) I sell it over the counter for only £3.95 for a small 10ml bottle
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T33cno

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Re: Threadlock on propshafts?
« Reply #12 on: April 11, 2017, 06:58:26 pm »

My bottles massive would cost a packet  {-)
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Paul2407

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Re: Threadlock on propshafts?
« Reply #13 on: April 11, 2017, 07:01:57 pm »

I do the 50ml bottle which is usually the largest for £15.95 Loctite price is £35+ and it's the same stuff, one of the partners that used to own Loctite broke away and started Bondloc
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T33cno

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Re: Threadlock on propshafts?
« Reply #14 on: April 11, 2017, 07:30:50 pm »

 8)
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boatmadman

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Re: Threadlock on propshafts?
« Reply #15 on: April 11, 2017, 10:24:59 pm »

Shouldn't need loctite if you use a lock washer pulled up tightly. Even with a LH prop I have never used anything more than a lock nut without problems.


Ian (expecting to lose a LH prop now!)
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T33cno

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Re: Threadlock on propshafts?
« Reply #16 on: April 11, 2017, 10:26:12 pm »

Doomed  {-)
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RAAArtyGunner

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Re: Threadlock on propshafts?
« Reply #17 on: April 12, 2017, 01:44:51 am »


Is using SWMBO nail polish cheaper  %) %) %)

Colour coded to suit the hull  O0 O0 {-) {-)
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Paul2407

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Re: Threadlock on propshafts?
« Reply #18 on: April 12, 2017, 07:10:50 am »

What a waste of nail polish!!  {-)
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