ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

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glossieblack
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by glossieblack » Wed Jul 18, 2018 6:02 am

Thanks for the kind words Jeff, Lee and Fuzz. Ilker, cape man is right, the inspection hatch is to be screw fixed. Fuzz, I'll post later about crossing the Noosa bar given current conditions.

I spent today putting the seventh and final coat of varnish on the bright work hatches and trims that I brought home from Great Sandy a couple of weeks ago.

Then I glued Skinnydip's aft locker inspection plate to its cambered sub-frame.

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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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icelikkilinc
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by icelikkilinc » Wed Jul 18, 2018 7:46 am

Thanks for clarification Michael.

Than, I would only make sure about torque applied and how much you need to tighten.
The seal might have a spec for max torque allowed, over-tightening the screws might have impact on how they lay into their positions or get damaged and not function as intended.
Ilker

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

Jaysen
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by Jaysen » Wed Jul 18, 2018 8:01 am

That's what I like about the RTV/silicone option... smash it more and it seals better. The key will be getting the version that stays soft enough to "squeeze" multiple times. My automotive bucket says that's the stuff colored green. The red is single use. The blue is high temp single use.

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glossieblack
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by glossieblack » Wed Jul 18, 2018 8:28 am

icelikkilinc wrote:
Wed Jul 18, 2018 7:46 am
I would only make sure about torque applied and how much you need to tighten.
The seal might have a spec for max torque allowed, over-tightening the screws might have impact on how they lay into their positions or get damaged and not function as intended.
Jaysen wrote:
Wed Jul 18, 2018 8:01 am
That's what I like about the RTV/silicone option... smash it more and it seals better. The key will be getting the version that stays soft enough to "squeeze" multiple times.
Thanks Ilker and Jaysen. Together you've nailed it for me. :D If I had the skill to build a U-shaped joint approximately 5' long with a tightly specified and uniform cross section, then an appropriate rubber seal and correct torques would be the way to go. But I lack the skills to build that accurately. I'm a novice batueau2 builder, where gaps of +/- 1/4" are the norm. It's the reason I'm here, the reason I can build a boat at all. The gap I'm building and that will need to be sealed is all over the place, like the proverbial ....... :wink: So I need a non-setting waterproof goo of some type. I'm leaning towards a rubberized mastic, as I don't like the way silicone-based goo tends to cause future painting problems.

Again, thanks gents, your stimulating thoughts are much appreciated. :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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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by Jaysen » Wed Jul 18, 2018 8:47 am

RTV should be easy to clean off if used "correctly"...
1. Paint your surface and cure (which is what you planned, right?)
2. lay bead on fixed surface
3. let sit a few minutes.
4. lay mating surface
5. bolt down

To clean use alcohol or acetone (i like MEK but... paint does not). If you did the proper surface prep before #2 above it will roll right off. #3 should keep it from sticking to the hatch top if you let it sit long enough. I never have any stuck to the valve cover of the MG and that sucker get 30ft/lb and reached about 210F. I can't imagine you'd be harder on it than that.

Is there a different problem I'm not understanding?

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glossieblack
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by glossieblack » Fri Jul 20, 2018 4:43 am

Thanks Jaysen. :D

Today I drove the ZF transmissios 90 miles to a ZF accredited diagnostic workshop on the south side of Brisbane. On the way I dropped the drive shaft that has CV joints at each end into a specialist shafting workshop for it to be tested. It connects the transmission to the Aquadrive thrust bearing assembly.

Hopefully by the middle of next week I'll be closer to knowing what's causing the destruction of two damper plates.
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 Fuzz » Fri Jul 20, 2018 5:40 pm

This is going to be interesting to hear what you learn.

OrangeQuest

Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by OrangeQuest » Fri Jul 20, 2018 7:08 pm

glossieblack wrote:
Fri Jul 20, 2018 4:43 am
Thanks Jaysen. :D

Today I drove the ZF transmissios 90 miles to a ZF accredited diagnostic workshop on the south side of Brisbane. On the way I dropped the drive shaft that has CV joints at each end into a specialist shafting workshop for it to be tested. It connects the transmission to the Aquadrive thrust bearing assembly.

Hopefully by the middle of next week I'll be closer to knowing what's causing the destruction of two damper plates.
Fuzz wrote:
Fri Jul 20, 2018 5:40 pm
This is going to be interesting to hear what you learn.
I am with you on this one Fuzz. I hope they find the problem and it is a simple one.

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glossieblack
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Re: ST21 Hybrid Powered "SKINNYDIP" Noosa Australia

Post by glossieblack » Sat Jul 21, 2018 4:19 am

Thanks Fuzz and OQ. I'm really hoping the problem is somehow being caused by the gearbox or the shaft connecting it to the Aquadrive thrust bearing assembly. A phone call from one of the testers advising that they have found a problem in either would be a huge relief for me, because if the problem is being caused by some form of incompatibility between the diesel and e-drives, finding a solution may be more elusive.

A couple of nights ago, when re-reading earlier posts by Jaysen, OQ, Ilker and Fuzz, I realised that I've probably too readily discounted misalignment between engine and gearbox as a possible explanation. On reflection, I agree that it's the most likely explanation of how two heavy duty damper plates could have been destroyed. This is why I've taken the trannie for a full diagnostic, including a 'squaring measurement' as suggested by OQ, to check that the drive's spline is at right-angles to the face of the bell-housing.
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 Jaysen » Sat Jul 21, 2018 7:06 am

Could be the engine side too.

The key things on both would be
1. Square
2. Centered
3. #1&2 through entire rotation

Don’t forget #3.

I would be very surprised to hear it’s the eMotor.

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