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Author Topic: ASD hull from MMB  (Read 14610 times)

cuppa

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Re: ASD hull from MMB
« Reply #25 on: August 03, 2014, 06:30:21 PM »

Hiya Cuppa,

I was thinking of fitting a Kort as well but my Propeller has rounded tips  !!    Am I correct in saying the ends have to be flat, just missing the wall of the Kort tube.  ?

Cheers

Ken


Hi Ken


From my very, very limited experience I think that is optimal but not essential.
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Tug-Kenny

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Re: ASD hull from MMB
« Reply #26 on: August 04, 2014, 10:27:29 AM »


Thanks for that. i might follow your lead and have a go.
     
                                :-))


Cheers

ken
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andywright

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Re: ASD hull from MMB
« Reply #27 on: August 04, 2014, 09:34:37 PM »

Hi Ken,
Usually props in kort nozzles are flat, you can buy kart shaped props from Prop Shop, http://www.prop-shop.co.uk/


Regards andy
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Tug-Kenny

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Re: ASD hull from MMB
« Reply #28 on: August 05, 2014, 10:51:17 AM »


Thanks for the  'heads up'  Andy.  I will see how mine works first as I'm raiding the prop from another boat, to keep costs down.

I was thinking of filing the tips flat, but know that leads to balance problems.   %)

Cheers

Ken
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cuppa

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Re: ASD hull from MMB
« Reply #29 on: August 05, 2014, 12:40:35 PM »

ah well - all modeling activities suspended for at least 6 weeks. went to the coast for a day out yesterday - suffered big seizure down by the harbour and fell down on to concrete - big drama ensued involving coast guard and rnli. upshot is left arm broken just above the elbow and arm is in plaster from my shoulder to my wrist also have damaged left knee. the people who rescued me were wonderful and very kind.
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Martin [Admin]

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Re: ASD hull from MMB
« Reply #30 on: August 05, 2014, 12:51:04 PM »


Ouch! Very sorry to hear that, get well soon.

... did you get any photos of the RNLI boat while you were sitting around holding your arm by any chance?!?!?  %)
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ian-mccaffrey

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Re: ASD hull from MMB
« Reply #31 on: August 05, 2014, 01:26:37 PM »

Ahh cuppa that's really sad news mate. Hope you have a full and speedy recovery
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mark w

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Re: ASD hull from MMB
« Reply #32 on: August 05, 2014, 04:26:06 PM »

Wow, really sorry to hear that. Geat well soon.
 
Mark
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cuppa

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Re: ASD hull from MMB
« Reply #33 on: August 05, 2014, 06:20:04 PM »

thanks chaps. must admit i felt a right fool being given all this attention in front of an audience of holiday makers. ah well - at least the concrete is ok!!!


i am very lucky that it was not far worse. the attention i received both at the scene and at the hospital was first rate.
sorry martin - i did not get a ride in a lifeboat. i think the rnli guys were in the area and helped - they were great- the coast guard sent a rescue\recovery team and i was then transfered from a coast guard vehicle to an ambulance. my memory of what happened is a tad hazy and i have no memory at all of the fall.


now i get to look at the asd hull for 6 weeks without being able to touch it.
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Stavros

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Re: ASD hull from MMB
« Reply #34 on: August 05, 2014, 07:43:21 PM »

Hope you get better dammed soon I am enjoying reading this blog
 
 
Dave
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Tug-Kenny

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Re: ASD hull from MMB
« Reply #35 on: August 06, 2014, 10:49:30 AM »


So sorry to hear of your accident Cuppa.  I hope you recover soon.  O0

How far away from home were you ?  Glad you got home safely.

regards

ken

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cuppa

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Re: ASD hull from MMB
« Reply #36 on: August 06, 2014, 08:20:11 PM »

thanks ken.


we were about 60 miles from home.
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Tug-Kenny

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Re: ASD hull from MMB
« Reply #37 on: August 06, 2014, 08:26:01 PM »


I had a feeling you were some way as you mentioned lifeboat crew.

I'll pop over sometime and sign your plaster.    {-)

Cheers

Ken

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cuppa

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Re: ASD hull from MMB
« Reply #38 on: August 07, 2014, 12:05:37 PM »

hi ken


you are most welcome to pop round.
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cuppa

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Re: ASD hull from MMB
« Reply #39 on: August 12, 2014, 12:38:00 AM »

Now that the ouch factor has reduced a bit i am finding that I can do some modeling with my arm in a cast so have done a little bit to the kort today. Pics to follow soon...........................
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cuppa

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Re: ASD hull from MMB
« Reply #40 on: August 14, 2014, 07:54:21 PM »

Here we go: have installed the propshaft, skeg and kort. Decided to fit a steerable kort in the end. Good news (I hope) is that I went to the fracture clinic on weds and they removed the cast my arm was in (apparently for some types of fracture close to the elbow it is better not to immobilize  the joint). I am still limited in what I can do before ouch sets in but can do a lot more than when I had the cast on.
60mm prop arrived this morning. Anyway - here are a couple of pics of progress so far.




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Tug-Kenny

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Re: ASD hull from MMB
« Reply #41 on: August 15, 2014, 10:46:28 AM »


Well done    :-))      I see you're made of sterner stuff.     :}   

How do you plan to steer her ?    is the Kort steerable, as the linkage looks to be very close to the stern ?

Cheers

ken



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cuppa

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Re: ASD hull from MMB
« Reply #42 on: August 15, 2014, 12:51:24 PM »



How do you plan to steer her ?    is the Kort steerable, as the linkage looks to be very close to the stern ?

Cheers

ken


Hi Ken


The kort is steerable. I think the apparent lack of distance of the steering arm from the stern is a trick of the camera/shadow. The linkage is actually 1 1/2 inches from the transom.


Cheers
            Jon
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Tug-Kenny

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Re: ASD hull from MMB
« Reply #43 on: August 15, 2014, 07:55:37 PM »


Ah  !!.   I would have liked to try a Kort on my latest production but I started making the rudder first so I'll see how that goes.

Am I correct in assuming the centre shaft that turns it is positioned directly over the middle of the prop blades  ?

Cheers

Ken


 
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cuppa

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Re: ASD hull from MMB
« Reply #44 on: August 15, 2014, 08:40:15 PM »

Ah  !!.   I would have liked to try a Kort on my latest production but I started making the rudder first so I'll see how that goes.

Am I correct in assuming the centre shaft that turns it is positioned directly over the middle of the prop blades  ?

Cheers

Ken


Hi Ken.


I am no expert on korts but that is exactly how I set mine up - prop centre line on the pivot point.


Cheers
            Jon
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cuppa

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Re: ASD hull from MMB
« Reply #45 on: August 27, 2014, 07:22:16 PM »

Managed to do a little more:


Motor mount is now sorted and plywood reinforcement has been added for the P frame and kort mountings:

Basically the motor sits on a bed of filler and is clamped by the brass rod. First time i have been totaly happy with the motor to propshaft alignment - it is as close to bang on as i can get it.
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Stavros

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Re: ASD hull from MMB
« Reply #46 on: August 27, 2014, 10:02:40 PM »

If I was YOU I would certaintly reinforce both the motor mounting and the rudder stock with P40 Grp filler.............REASON WHY...............Ordinarry car body filler has NO inherrent strength and WILL NOT  stay fixed to the hull..........P40 is a totally DIFFERENT type of filler as it has Fiberglass strands in it and it will adhere properly to the hull.....the last thing that you will need is a motor mount breaking under vibrations is it.....secondly Ordinarry car filler is PORUS and will absorb water...........
 
 
Dave
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cuppa

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Re: ASD hull from MMB
« Reply #47 on: August 27, 2014, 10:55:59 PM »

Thanks Dave.


I had not thought of that - many thanks for the advice. Think I will grind the filler out and then replace it with P40.


Many thanks for your help.
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roycv

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Re: ASD hull from MMB
« Reply #48 on: August 27, 2014, 11:53:14 PM »

Hi just picked up the point about propeller tip shape for kort nozzles. 

I had an email chat with the late "Tow boat Joe" who was a tug master on the Mississippi and he said that with the many logs  on the river they went away from the close fitting props as these were being damaged and jammed up if a log got caught up.  They went to round tipped props because they did not get jammed so badly when this happened.
regards Roy
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cuppa

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Re: ASD hull from MMB
« Reply #49 on: August 28, 2014, 03:40:20 AM »

Hi just picked up the point about propeller tip shape for kort nozzles. 

I had an email chat with the late "Tow boat Joe" who was a tug master on the Mississippi and he said that with the many logs  on the river they went away from the close fitting props as these were being damaged and jammed up if a log got caught up.  They went to round tipped props because they did not get jammed so badly when this happened.
regards Roy


Interesting - thanks Roy
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