Airplane Jacks or Boat Jacks - Lifting Seeker's Bow
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- Опубліковано 9 кві 2021
- The rudder's hydraulic cylinders are tasked to lift the bow of Seeker, so she can be hitched to the heavy haul trucks.
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Well done, I like the quick decision of "my boat, my death".
Shout out to the compression strength of plywood!
Under the keels, it's about 20 tons. 40,000/(16*16)= 156 pounds per square inch. I bet it could take double that.
@@SVSeeker absolutely amazing what wood can do nowadays hahahaha
Not home depot plywood
Something I used to do in stuff I built. Even if you only need a cylinder to work one way I always plumbed both sides. I used the non work side as a reservoir. That way your pump reservoir didn't need to be as big. You don't need it because you only need a little bit of lift out of those long rams but maybe someone out there in UA-cam land can make use of it.
Nice idea, but usually the extra 20ft of hydraulic hose that would require is way more expensive that a 5 gallon reservoir.
@@russhellmy Wow, expensive hose.
In my experience there are three main types of hydraulic fittings: Too Big, Too Small, and Wrong Kind.
I love every video when they jack up the boat. I always expect the thing to slip and everybody go squish. But, I'm also glad it hasn't happened yet.
I figured that since the video was uploaded and not titled like "boat squished builder" that everything ends fine.
I love how that motor spinning backwards gives you an indicator for how fast the fluid is going as you work the ball valve. Convenient secondary feature!
You NEVER cease to AMAZE! Been watching since you and Kay were together and you had your little grandson helping. You hadn't even welded the hull plates together and I remember seeing just how fast you could run! You have come a long way and I am extremely happy that I have had the opportunity to watch this all happen!
Doug and crew it is such a pleasure to watch you all work.
That is a really elegant solution to the variable geometry of the ram connectors, Doug. So that's what dreams are made of! Very satisfying to see a plan come to fruition first time.
Wow, I remember seeing some of your videos years ago. Congratulations on getting to this point.
glad to see your progress
Doug, I have enjoyed watching and being inspired by you for years (you have certainly contributed to my motivation on many completed projects around my house/shop). We use Amazon Smile to contribute frequently to The Sea Chest Foundation. Thanks for all you do for the boating/confab/engineering/critical thinking/common sense communities!
Thanks very much.
I had a dream, Part 1, had to go back an snooze for part 2.. carry-on
That's a powerful little pump to lift up that boat. Good work from the uk 🇬🇧
That's Awesome getting closer for the big truck trip!!
When we would jack an aircraft for maintenance, there would be a guy at the jack manifold that would constantly open and close valves to keep it level side to side and front to back. The jacks never seemed to lift equally.
That’s because of the distance between the jacks. You would have to have much greater difference and the load seen by each Jack is minimal. I have a Jacks side-by-side so when one side goes up just slightly more than the other, the jack on the other side sees a huge rise in load.
Interesting discussion, in this case the two jacks act as a pivoting point, like those scooters with two front wheels and suspensions, and that is even better because it helps spread the weight evenly between both keels.
The differences in the initial Jack response is due to flow resistance caused by piping configuration including fittings, valves, hose lengths, diameter changes, relative position to the pump, mani folding etc. and from.internal cylinder friction caused by seals, cylinder piston rings, packing, etc. The cylinder with the leased restrictive flow path should move first, (assumes cylinder friction is not a factor).
Lifting pressure won’t be achieved until all rams make contact with the hull, essentially synchronising movements. Flow then decreases as pressure increases and the lifting pressure won’t be achieved until all cylinders are at the same pressure, therefore all cylinders are moving at the same speed, when flow rates are very small.
This is only true in systems where the cylinders are configured to lift through the Center of Gravity and flow rates are very small - reducing the effect of flow restrictions. In Seekers case, while not pushing directly on the COG, the two cylinders are essentially located in the same location, same weight. Here’s a video of a lift where lifting together is very critical. ua-cam.com/video/EeP26M3QmVg/v-deo.html
A set of dolly's just like on a semi trailer.
Those keels look small compared to the boat, it's crazy how they will hold it up. What a great endeavor you have
same! so much lead inside them
Always entertaining.
Well I'm happy to say I'm glad you're in the home stretches of getting her launched.
I have been watching since the beginning and I can’t wait too see this thing in the water!!!!
The couplers you got are generally used on skid loaders or front end loaders for attachments. Something you could also look into even though they aren't flat and harder to keep clean are Pioneer fittings.
NPT is National Pipe Taper. It uses the taper of the threads to seal with some thread sealant or Teflon. There are also NPS fittings which is National Pipe Straight. They use the same thread form and pitch except the NPS fittings use a sealing washer or gasket to seal the fitting to whatever it is threading into.
We call that style connector fitting Flat Faced Fittings in the agricultural and industrial equipment industry. They are great to help keep dust to a minimum when that are not coupled. Some are designed to connect under pressure.
Was just going to comment on the fittings. Hope there is going to be a way to relieve the pressure so they can be connected. When I worked off shore piloting Remote Controlled Vehicles the lines going to the A frame and to the cable reel were both pressure mateable and true to Murphy's Law someone messed one of them up. Think it was close to 7K dollars to replace it.
You being cleverly inventive and resourceful cannot go understated! I love the "Git Er Done" with what you have attitude! Why spend hard earned $$ on something that can be made or modified. If you just ordered new parts for everything on this boat, I most likely would not have be as interested as I am now.
Never cease to amaze me!
beautiful to see it getting so close to being ready to move
good job with those jacks Doug, like the way it connects with the boat. don`t see them joints or the plates slipping. good engineering all round....
@Dantheman why not funny?....
Just amazing!
I live 500 feet from the Chesapeake Bay. Every year my yard is totally different (hills, valleys) then the year before. As for the airplane parts on a boat, my 1968 Nova 24 Race boat has what could be the original K Planes (trim tabs) to exist. Made out of aluminum plates and "L's" to attach them to the boat and are pushed and pulled up and down by a Cessna airplane hydraulic rams.
Hi Doug, its Ian Langley here from New Zealand. You may recall my cousin Paul and I visited you during our Route 66 road trip back in 2018. I must say she is looking great and I bet you are getting excited about about the trip to the sea (river) with the big launch pending. I wish you good luck with both and if I was a little closer would be there to watch. Cheers Ian Langley
I used discounthydraulichose . They have a quick turnaround time. But I guess you already have a compression tool to crimp the hoses.
Yes open the top plug on the cylinders or air in the cylinder well push it out. If you want they make a bronze breather for cylinders.
Good work, and great video as always!
Great vid btw! Hoping to make it to the launch!! Well done.
Affirmative we are more complex.
Thank you for being a part of the 4.7% of females that watch my channel. I figure 2% of that is just guys that don't know how to use a computer so they borrow their sister's computer. : )
It's your task in evolution :-)
@@SVSeeker no idea why so many women don't watch. It's all about piping and hoses..😂😂
That was pretty amazing--first time success!
Pretty cool video! Good work!
@16:01 dogs know a good soul! What would we do without you and your mates that help...I am without words watching you and your everything you do! Thanks bud your easy to watch and your video EDITING is beyond wow...
It's a long haul in Building the SEEKER, but man she looks marvelous, Far waves and Following seas Mate!
...what no "what you build today?" That's my favorite part
If you hook a hose from the top of the cylinders to the reservoir drain and let them suck oil in as the cylinders go down, then add more oil, now the top of the cylinders is your reservoir expansion cambers. As the cylinders are pumped up, oil will be forced out into your pump reservoir.
It's called a holding valve so the hydrolic is held in place it has to have pressure to open the valve on the otherside to bring the fluid back so that was a important safety feature that was just eliminated and if you were to blow a line the hole thing will come crashing down.
To do this right and safely the holding balves should be at the cylinders.
Thankyou for turning me on to so many ship an boat channells
The port is true I spent my lunch brake one day following the water trail to the ocean. That will be a cool journey 🤘🏼
Looks like your ready to hit the road, jack
Great project.
Make sure when possible the top clevis and bottom clevis are orientated 90° out of alignment. That way there shaft only has axial forces and no bending forces. Hydraulic shafts are relatively easy to snap of they get any bending forces on them.
I think i might come watch the entire process of getting it out of the backyard all the way to the water. What are the details surrounding that?
To be announced. Thinking about a photo contest for the best shots of the transport.
I wish we could come see in August, but we're in the UK.
Necessity is the mother of all inventions
Looking good, FYI most aircraft jacks are on tripods so they will remain stable on uneven ground and only make ground contact at the end of the legs to prevent rocking. Learned much of this the hard way when I dropped my brothers Beech Bonanza off the jacks doing a gear retraction test. Ouch!
Hello Dave yeah hay would you grab me a burger on your way to the hanger because I have a feeling we're going to be here the better part of all night. Why? Because I just dropped the Bonanza off the jacks onto the hanger floor, but there is good news, the gear retraction time was spot on, And they fully retracted before crashing go the floor
those are some cool looking aeroplane jacks LOL jokes aside I love this kind of builds for personalised use
Those hydraulic quick connects look just like standard skid steer fittings, and you can get those in stainless steel. But a big thing with those connectors is when they have pressure behind them they are damn near impossible to re attach. You have to bleed the pressure off before you can connect them. Also the hydraulics your dealing with will never get air bound when they have a load on them.
I been watching this build and let me tell you magnificent story
August 12th is my birthday. I really wish I had the opportunity to come and see this beast roll away 👍😁
Great double pivot idea, not near as sketchy as some of the pin and socket designs used with airplanes
Very impressive jacking system. I like it, simple and safe to use. I was watching the earth under the jacks sink before it starting lifting your project. :-)
That is fun to watch. And how it rebounds so quickly even after years.
@@SVSeeker lol. At first I thought it was going to push all the way into the ground and not lift the boat. Lol
It should was good entertainment. :-)
Just 2 cents' : I would move the shutoff valve away from the jacks (such that nobody dies) and beef up the X base. The full down force is applied to the middle of the X, as it is now, possibly pushing the middle into the ground bending upwards the pipes. The end struts won't prevent that b/c the top ring can slide up on the cylinder. Bracing the top ring to the base by some vertical struts around the cylinder would help with that .
That location allows me to disconnect the hoses and not leave them out. It also removes the the hose to the pump from then need to sustain pressure for a long duration.
@@SVSeeker You could add a second valve, shut it, the hose would be under pressure, close the main valve and relieve the pressure in the hose. Not sure how useful that would be.
if you use power down with the hydraulic fluid once the cylinders are full on both sides and the lines are charged the reserve tank will stay the same level
Not sure if it was the camera angle but it looks like it is bending the rams. It might not be a problem but you might want to keep an eye on that. It was pretty cool seeing the ground compress.
Just the camera. Absolutely not bending a 1.5" shaft.
The engineer who designed the engine used in the WW2 Spitfire had a dream where Merlin told him how to prevent oil starvation during extreme manoeuvres. It worked, so it was called the Merlin engine. Arthurian legend says Merlin will return when Britain is in peril. The Spitfire actually helped prevent Hitler invading Britain.
Impressive Doug!!! Could the valve be moved to the pump side so you dont have to be under the boat to operate it?
Better not to keep pressure on the hose and learn to deal with the fear.
maybe moving the ball valve to the pump end of the hose might be a good idea for move day.
Prevents removing the hose and adds more hose that must remain under pressure.
@@SVSeeker then perhaps a long handle can be used.
@@brianrich3917 Or grow some balls.
@@SVSeeker Doug I love your honesty 👍🇺🇸
*slow whistle* nice work brother.
So...jic can be used as o-ring boss, adapters especially, if the wrenching flange is wide enough to back the o-ring
SV Seeker - largest crew in Tulsa.
It is useful to put a small amount of seal inside the female part before assembly, not just outside of the male part.
Great job you are doing on the boat.
I don't think that's a good idea. Much of the sealant on the inside is pushed down the threads and forms a clump that can tear away and plug a pilot port of jam a solenoid spool valve.
I though French fine thread/French metric thread was very common in vessels. The in famous Poclain excavator uses them fittings and uses Poclain flange fittings. Fishing boats still uses them here along with Poclain piston motors for winch’s
Your ship's stores for spare parts are one of the things that I have really liked as you have built Seeker. You plan for everything to break while you are out in the middle of nowhere and only have it be minor setbacks. I am curious of what oil you plan to use on the quick connects to keep them from rusting as much. I would have expected a wax or grease to be used to protect them.
I plan to ask the folks at the fishing fleet docks what they use.
@@SVSeeker Good idea
I strangely also dreamt of SV Seeker on the road and all what I can say there was one curve with a bumper or wobble in the middle of the street where there was a moment of risk... but at the end you guys reached the harbour without any greater stress at all! :)
It's not a good dream if there is not any excitement. : )
Looks like you can swing the jacks up to the side of the seeker for storage while you are traveling so you don’t have to disassemble every time you move.
That day is near... when you'll retire to keep working your butt off on your dream.... I do have to say I do feel a great deal of envy!! best of luck and God bless!
As NAVY hyd tech, Those fittings are used mainly on Test Equipment to run test hyd cyl. pressure range from 3k psi up to 9k... for the NEW super hornet stuff. never got chance to work that range but all the older stuff F/A18c stuff.. getting them cheap great deal... seems allot stuff cleaned out of old ships typical lazy gov waste resale at super discount is your bonus.. PARKER makes some great products.
I've been watching since you pinched the bow plates together.
The reason why there is JIC, NPT and about 20 other systems for hydraulic fittings is, the hydraulic manufacturers got together and worked out they could sell 10x more fittings hahaha
Blue monster sounds nice
You are amazing!!!!!!
I have amazing crew.
First Time, looking good 😃😃😃 subscribed, Thanks
Great video.
Thanks!
What about if you put a valve on the supply side to relieve the pressure from the pump and you have that valve good directly into the reservoir
You'd leave the hose under pressure.
Put some cribing back under the bow just in case the jacks fail better safe than sorry . Well done she is looking fantastic .Have been watching you since you got the flat steel and started bending it you and your crew have work wonders best of luck with the launch
Thanks and No need. The weight is on the steel under the keels.
She is sitting on her Keels not on the jacks, lol didnt you see him open the ball valve to lower the jacks?
No kidding there is more than one standard of quick connect. Tried to use one of our implements on some else's equipment. Looked like they would work but didn't
Looked like the hydraulic setup was near the top of it's capability, is this going to be better or worse without the house on?
thxs
Just came to mind that you should find out how long the antifouling stays active when on dry. Usually the window is couple of months tops. Quick wetsanding or light powerwash might be necessary before the launch.
No Limit. It's PPG's ABC-3
You should always extend your cylinders fully and go to maximum pressure. Better to find out about something that might fail under pressure now than when you have the boat on it! We test all our hydraulic kit to 150% of the relief valve setting normally.
Good idea. ....but not inside the shop. : )
Maybe drill a hole in that shut off lever and attach a line to it so you can shut it off from a distance.
I'll use my big girl panties
Will the boat be a place to have fun as well when your not researching? You should add sailing dinghies maybe to teach people who dont know how to sail and make them better. Plus it would be super fun!👍⛵
Yes but that’s easy when you have fun while working.
Using the top side of the cylinder as a reservoir helps alot. All you have to compensate for is the displacment of the shaft and not the entire top part of the cylinder. Plumb the top side to the reservoir so that its always in fluid, you dont even need high pressure line. Something you already thought of I'm sure.
No, and that's a cool idea. The tank is big enough, but that will come in handy down the road. Thanks
Heavy duty metal protector spray from Amsoil might help unpainted steel from rusting. It's some sort if wax.
Doug it seems like you have much knowledge with many different systems. I’m enjoying the series and looking forward to the splash, well done! On a side note, do you do anything to get your mind off the boat? Just curious
Thanks, it's just a matter of listening to folks with good advice. And yes, I listen to a lot of books and watch a movie when I can find one that holds my attention. Watched "The Help" last night. That was good.
NICE!!
Hi Doug,
Looks like some of those hoses are Eaton H280 hose with Z-series fittings? If so they don't look like they are crimped all the way. There shouldn't be the bulge above the crimp and the part that was crimped didn't look crimped enough. Do you know if you are using the correct tooling?
As a side note. I personally love using the h280 line and the Z-series fittings. They are a big improvement over previous gen Hose ends.
I know I am absolutely not using the recommended fittings for the crimping tool. : ) Life is an adventure.
@@SVSeeker Well it doesn't hurt to try or to use them for temporary testing. I don't think there's any chance they will come apart. But I do think they will leak if used regularly down the road. That is my experience with poor crimps, eventually they start seaping.
I'm not sure what tool you are using. If it is a T400(very common weatherhead crimp machine) we got a Die conversion kit for ours for $600-700 for the Z-series fittings from our local dealer. It does 1/4 through 1".
Wrap all the spare fittings in bubble wrap, add a lanyard and let it follow behind the boat!
We'll just tow a barge.
Those two pups are adorable.
Love the videos, nice work, amazing stuff.
For the hydraulic jacks you can get a hydraulic check valve/flow control/needle valve, i would put it right after the quick connect on the pump end so it will pump up and it won’t flow back though the pump, and you can slowly lower it at a safer distance than right under the boat 😂 and you could still close your ball valve on the jack said and remove the hoses (make sure you release te pressure in the hose first 👍🏻
Easier and cheaper to just deal with the fear.
MR SEEKER OUT HERE WITH A FRESHHHH SHAVEEEEEEE
Am I the only one whose heart was racing when Doug opened the ball valve? ;)
nope!
I mean this isn't faces of death they wouldn't upload a video with someone dying
@@crashoverride93637 I don’t know!!! Doug already got blown up once!!!😬
HA!!. I said to my wife if I shave my beard off would I look as good you. She said no you'd look like a thumb.. lol honesty is always the best policy! 😜🤣🤣🤣
Having used quick connects for hydraulics for many years my one word of caution is how quickly built pressure can make those quick connects damn near impossible to get on. Sometimes it helps to bleed the pressure from the system. Although we did have ours used in a very dirty and dusty environment which definitely affected the connections.
Yeah, I imagine that just heat, as a day warms up would be enough to lock it off.