Can the motor bracket be mounted on the shaft end to make those long mounting rods go away? Never mind I think the answer is the outer shell spins on this type of motor so it has to be mounted at the one end.
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We welcome anyone with a passion for submarines and a desire to learn and share knowledge about this fascinating hobby. Use of these forums indicates your intention to abide by our code of conduct:
1. No spam. All automated messages, advertisements, and links to competitor websites will be deleted immediately.
2. Please post in relevant sub-forums only. Messages posted in the wrong topic area will be removed and placed in the correct sub-forum by moderators.
3. Respect other users. No flaming or abusing fellow forum members. Users who continue to post inflammatory, abusive comments will be deleted from the forum after or without a warning.
4. No threats or harassment of other users will be tolerated. Any instance of threatening or harassing behavior is grounds for deletion from the forums.
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Originally posted by Scott T View PostCan the motor bracket be mounted on the shaft end to make those long mounting rods go away? Never mind I think the answer is the outer shell spins on this type of motor so it has to be mounted at the one end.
DavidResident Luddite
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This version of the motor-bulkhead puts the motor in the water. Suspended aft of the motor is a gear splitter which outputs two counter-rotation shafts from the single motor input. This is still in the mock-up stage where I check fit and non-interference of the parts. I have yet to add the radial flange.
Resident Luddite
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Hello David,
Thanks for your prompt response.
I should have put two and two together earlier, I had seen your silicon mould with all the pushrod inserts before Duh!....
I do have another question. I have always found it information overload with websites when looking up the "Cup seal". I have heard them called "lip seals" and even "Y' seals and the German name "Simmering" I know what I am looking for but find there are so many seals that look the same, some for Hydraulic and other applications I have been lost on websites trying to find stuff only to find that maybe the name I have been assuming they were called was wrong.
Anyway, to cut to the chase. Do you get your Cup seals from Mc- Master Carr as well?. I looked over their web page and couldn't find anything. IF i may ask what are the spec for yours?
Sorry,
Pain in the ass from Oz.
David H
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I go into seals in detail in this video, including the source for cup seals along with part numbers.
https://www.youtube.com/watch?v=sjuMFJOgMJU
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Originally posted by Davidh View PostHello David,
Thanks for your prompt response.
I should have put two and two together earlier, I had seen your silicon mould with all the pushrod inserts before Duh!....
I do have another question. I have always found it information overload with websites when looking up the "Cup seal". I have heard them called "lip seals" and even "Y' seals and the German name "Simmering" I know what I am looking for but find there are so many seals that look the same, some for Hydraulic and other applications I have been lost on websites trying to find stuff only to find that maybe the name I have been assuming they were called was wrong.
Anyway, to cut to the chase. Do you get your Cup seals from Mc- Master Carr as well?. I looked over their web page and couldn't find anything. IF i may ask what are the spec for yours?
Sorry,
Pain in the ass from Oz.
David H
Lip/cup/wiper seals are all unsupported rubber units. Simmering type seals feature an imbedded tensioner that forces the lip of the seal up tight against the rotating shaft -- ideal with WTC's that see great pressure differentials between their interior and the water around them, which is the case with ballast sub-systems of the 'piston' type.
Here's where I get mine, David: Precision Associates, Inc.; 3800 Washington Avenue North; Minneapolis, MN 55412 https://www.precisionassoc.com/ https://catalog.precisionassoc.com/c...tes-inc-u-cups
And for Christ's Sake!!! Improve your scribing techniques, will ya!????.... Still looks like crap!
David
The HorribleResident Luddite
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Originally posted by MFR1964 View PostDavid, question, so, running the motor in the wet, that will be no problem, but running your gears in the wet, are they contained inside a closure?, enlighten me!!
Manfred.
DavidResident Luddite
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OK, that can be a solution, but if you get lipseals at both ends of your gear-enclosure, you can leave the gearbox as it is, much less work to alter the gearsetting, and keeping the stuff more standard for production.
Manfred.I went underground
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Originally posted by MFR1964 View PostOK, that can be a solution, but if you get lipseals at both ends of your gear-enclosure, you can leave the gearbox as it is, much less work to alter the gearsetting, and keeping the stuff more standard for production.
Manfred.
I could do that with the smaller brushed motor, but not possible with the larger brushless motor Bob and I have selected to be our basic install on the majority of our future MSD's.
This is my first in-water gear splitter, done over 30 years ago:
DavidResident Luddite
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I'm just about ready to use these Modular SubDriver bulkhead masters to give form to the rubber tools from which cast resin production parts will be produced. Some last-minute machining, putty work, wet-sanding, primer, and things are now good to go. Fine with me, I'm sick of this grunt work, I want to get back to proper model-building, damnit! I use them to mock-up a practical demonstrator -- this is the stage where you want to find faults, not after you've committed to production tooling!
Last item on the MSD work list is this forward bulkhead used to give access to the forward dry space where the battery is stored. We wanted to provide the option of outfitting this bulkhead with two servos -- some customers would rather take the direct route with their linkages rather than run a long pushrod forward from the motor bulkhead mounted servos. Typical items needing r/c activation at the bow include bow plane, bow plane retract/deploy, anchor, and torpedo launching.
Resident Luddite
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