ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

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glossieblack
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Re: ST21 "SKINNYDIP" Noosa Australia

Post by glossieblack » Fri Aug 05, 2016 4:06 am

The U-bolt block was constructed out of 5 layers of 9mm ply, with the aft layer having a higher top edge. The block was epoxy filleted in place, with the fillets forming a dam.

This set during the day, and was filled with thickened epoxy this afternoon. It should clean up well.

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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.

jorgepease
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Re: ST21 "SKINNYDIP" Noosa Australia

Post by jorgepease » Fri Aug 05, 2016 6:35 pm

Looking good! That block ain't going nowhere!!!

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glossieblack
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Re: ST21 "SKINNYDIP" Noosa Australia

Post by glossieblack » Sat Aug 06, 2016 6:13 am

A productive afternoon spent working my way along the sub sole acoustic baffles that have been filleted, but not fibre glass taped, into place.

While glassing them in was perhaps not structurally necessary, the thought of one somehow vibrating itself loose and becoming an acoustic annoyance unable to be accessed under the fixed sole was motivation enough for the afternoon's work. Nothing picture worthy. :D
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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glossieblack
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Re: ST21 "SKINNYDIP" Noosa Australia

Post by glossieblack » Sun Aug 07, 2016 5:01 am

Spent this afternoon working out an appropriate layout for the electric motor box, lithium ion battery banks, and the waterlock/muffler in the aft locker. The position of the rudder port is a design given.

The picture below is the resulting 'mock up', using plywood offcuts to approximate the aft locker sole, and cardboard boxes to approximate the electric motor box (centre), and the lithium ion battery bank boxes to either side.

The approximately 4" change from the cockpit sole level to the aft cockpit sole coincides with where the forward vertical face of athwartships helming bench seat will be located. The seat will be approximately 18" above the cockpit sole.

Access to the aft locker will be via an approximately 48" wide by 18" deep horizontal hatch located in the helming seat. The hatch will be hinged so that it can swing up out of the way. Drains approximately 3" deep and 2" wide will run around underneath the cut in the seat, and will drain back into the cockpit via scuppers. The seat back will intersect with the aft curved deck which will carry through to the transom.

Slowly but surely progress is being made. :D

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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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cape man
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Re: ST21 "SKINNYDIP" Noosa Australia

Post by cape man » Sun Aug 07, 2016 9:05 am

Would be interested to learn how much the hybrid engine set up is going to end up costing. I am really digging this build, and jealous as hell at the same time. She is going to be a one of a kind beauty! Love the layout you have there.
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Cracker Larry
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Re: ST21 "SKINNYDIP" Noosa Australia

Post by Cracker Larry » Sun Aug 07, 2016 10:17 am

I'm really liking it too. Very cool 8)
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glossieblack
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Re: ST21 "SKINNYDIP" Noosa Australia

Post by glossieblack » Sun Aug 07, 2016 11:41 pm

cape man wrote:Would be interested to learn how much the hybrid engine set up is going to end up costing.
Hard question to answer precisely, because in Australia with things marine, if something costs X US dollars in the US, it will cost at least 1.5X US dollars in Australia, sometimes 2X US dollars.

Perhaps the best way of answering your question is to talk ratios. SKINNYDIP's hybrid system's cost breakup is:
- 40% approx. for 20hp diesel engine and gearbox.
- 40% approx. for electric motor &lithium ion battery bank.
- 10% approx. for drive train (prop coupling, shaft, seal, bearing, prop shoe, prop)
- 10% approx for rudder and steering set up (rudder, rudder shaft, bearing, arm, tiller).

So for standard inboard diesel propulsion, the cost would have been approx 60% of what the full hybrid setup is costing.
My hunch is that these ratios would be similar in the US.

Hope this at least partly answers the question. :D
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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glossieblack
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Re: ST21 "SKINNYDIP" Noosa Australia

Post by glossieblack » Tue Aug 09, 2016 6:41 pm

Getting state agency approvals for our local oyster reef restoration project is consuming way too much time, time that should be spent boat building. :roll:

Hoping to submit the formal application for approval to establish 16 oyster reefs soon.
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 "SKINNYDIP" Noosa Australia

Post by cape man » Tue Aug 09, 2016 7:52 pm

Good to hear it's not just here that the bureaucracy sucks....NOT!
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 "SKINNYDIP" Noosa Australia

Post by glossieblack » Wed Aug 10, 2016 4:48 am

cape man wrote:Good to hear it's not just here that the bureaucracy sucks....NOT!
What I find interesting is that each of the three key government departments we need to deal with is split over our project. By every measure used by their own scientists to measure the water quality of coastal estuaries and waterways up and down the settled eastern coast of Australia, our Noosa River and Lakes system is judged to be amongst the best.

So one group of bureaucrats are saying there isn't a problem, leave things alone, no need to do anything. What they're really saying is let's maintain the status quo, lets keep doing our bureaucratic business as usual.

We counter that while our water quality is excellent, marine biodiversity generally and fish abundance in particular are but a shadow of the prolific abundance of the system one hundred plus years ago. And we have commissioned first class scientific and historical studies to substantiate this.

Another group of bureaucrats find our analysis and proposed habitat reconstruction, including oyster reef restoration, visionary and exciting, and an opportunity for them to refine the way they provide a public service.

Some of my colleagues are frustrated that we're caught between warring bureaucratic factions within and between the departments, but I see it as a huge opportunity to lever much wider bureaucratic reform and change. :D
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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