ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

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cape man
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by cape man » Sun Sep 08, 2019 6:39 am

Morning Michael :D. Going to probably show my ignorance, but I always tell our students that there's no such thing as a stupid question (but boy do they come up with them :help: ).

I am assuming the transmission has forward, neutral, and reverse, and full throttle in each. Instead of switching the prop, can you just switch the settings on your shifter? Make forward reverse, and reverse forward?


The world always seems brighter when you've just made something that wasn't there before - Neil Gaiman

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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by Fuzz » Sun Sep 08, 2019 1:28 pm

Heck of a good question Capeman. I bet GB could get the answer from Twin-Disk but I do not think it matters much because he is going to need a new prop either way. I say that because he is going to need a lot more pitch and I think it will be more than what the old prop can be re-pitched.
Probably no one makes a 4 blade prop in 10 inch but it would be worth looking into. 10 inch is most likely all the prop you can use but checking if you can use a larger prop would be worth it also.

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glossieblack
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by glossieblack » Sun Sep 08, 2019 8:26 pm

Thanks for sticking with this cape man and Fuzz.

I’m going with a Twin Disc MG 340 mechanical transmission because it has a low 1.45:1 reduction ratio in forward and is rated for up to 35hp input. In reverse the reduction is 2.31:1, and its rated for up to 12hp input.

So if I use it in reverse to the drive the boat forward using the existing prop, I'll have a 2.31:1 reduction to which I can only apply up to 12 hp.

Hence the need for a new RH prop to replace the current LH one.
Completed R13 two part nesting rowboat. ST 21 under construction .... where seeking perfection is recognized as the enemy of the good.

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cape man
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by cape man » Mon Sep 09, 2019 6:07 am

And now my ignorance is knowledge. 8)
The world always seems brighter when you've just made something that wasn't there before - Neil Gaiman

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glossieblack
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by glossieblack » Tue Sep 10, 2019 4:10 am

Skinnydip was adorned with further jewellery bling today, fashioned by steel man.

A small 316 ss tube tapering into an inverted cone was welded onto the tip of the bow roller strap, to house the staff for Skinnydip's pennant - first and second pics.

Also two 316 ss base plates with restraining rings above were installed aft and f'wd of the engine box - third and fourth pics.

These are to house the pole of a beach umbrella for shade when relaxing at anchor. The umbrella pole screws into the base plate.

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Completed R13 two part nesting rowboat. ST 21 under construction .... where seeking perfection is recognized as the enemy of the good.

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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by cape man » Tue Sep 10, 2019 5:44 am

Is that guy kin to Cartier? Now you're just showing off! 8) :lol:
The world always seems brighter when you've just made something that wasn't there before - Neil Gaiman

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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by Jeff » Tue Sep 10, 2019 7:47 am

Beautiful GB!!! Just beautiful!!! Jeff

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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by BB Sig » Tue Sep 10, 2019 7:50 am

8O Wow! 8O Beautiful work of art! :D

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icelikkilinc
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by icelikkilinc » Tue Sep 10, 2019 8:46 am

Thinkin new material for Jaysen, thinkin erect pole :lol: :lol:

Michael, We are desperate to see this beauty on water, hope you share the next rat/rod pics
Ilker

TW28 launch: viewtopic.php?f=12&t=23369

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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by Jaysen » Tue Sep 10, 2019 9:43 am

icelikkilinc wrote:
Tue Sep 10, 2019 8:46 am
Thinkin new material for Jaysen, thinkin erect pole
two poles... she's two erect staffs. This is confusing!

how will fuxx adjust to this?
Jaysen wrote:
Mon Apr 29, 2019 3:44 pm
I tried to say something but God thought I was wrong and filled my mouth with saltwater. I kept my pie hole shut after that.

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