The Association of Model Submariners.

Would you like to react to this message? Create an account in a few clicks or log in to continue.

* THE FORUM FOR ALL THOSE INTERESTED IN BUILDING AND OPERATING MODEL SUBMARINES *



Join the AMS - Registered Forum users can become members of the AMS and it's free ...... To join send an email with your name , address and phone number to amstreasure@googlemail.com


For further details of any events shown here also see the "Shows and Events" section on the forum

*STOP PRESS* Coronavirus. A lot of Clubs have already cancelled all activities. Check carefully before you plan any travel

.

CANCELLED because of coronavirus. Papplewick Pumping Station, Nottingham, Sunday 12th & Monday 13th April
CANCELLED because of coronavirus. Bournville Sub Day, Sunday 10th May 2020

. ,

(CANCELLED) Submarine, Boating & Sailing Weekend, Norwich MBC, Weekend of 25,26th July

,./
.
Model Boat Convention, Haydock Park (Cancelled this year)

.

CANCELLED. Bournville Sub Day, Sunday 13th September

,,,,

(CANCELLED) Club Submarine Regatta, Furness MBC, Barrow in Furness, Sunday 20th Sept 2020

Who is online?

In total there is 1 user online :: 0 Registered, 0 Hidden and 1 Guest

None


Most users ever online was 180 on Tue Nov 05, 2019 6:03 am

Latest topics

» openLRS and 2.4 Ghz and Submarines
Piston Ballast Systems - Page 4 EmptyTue Sep 22, 2020 9:52 am by david f

» Italian CB class from WW2
Piston Ballast Systems - Page 4 EmptySat Sep 12, 2020 10:30 am by david f

» Last event cancelled for 2020
Piston Ballast Systems - Page 4 EmptySat Sep 05, 2020 10:31 am by david f

» Simple telemetry system for openLRS (on 458Mhz)
Piston Ballast Systems - Page 4 EmptySat Aug 29, 2020 1:53 pm by david f

» John Lambert Plans
Piston Ballast Systems - Page 4 EmptyThu Aug 13, 2020 11:51 am by david f

» Piston Tank - Depth Control (Paper by Wolfgang Baumann & Helmut Huhn)
Piston Ballast Systems - Page 4 EmptyThu Aug 06, 2020 9:17 am by david f

» Krick Type Vll B Wiring and build photos
Piston Ballast Systems - Page 4 EmptyTue Jul 28, 2020 8:02 am by Deep Diver (Fred)

» New Gyro On The Market
Piston Ballast Systems - Page 4 EmptySat Jul 11, 2020 9:34 pm by timgarrod

» PIC and Arduino microprocessors
Piston Ballast Systems - Page 4 EmptyThu Jul 09, 2020 10:59 pm by timgarrod

Statistics

Our users have posted a total of 11163 messages in 1829 subjects

We have 865 registered users

The newest registered user is vmax1701a

    Piston Ballast Systems

    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  nigele(ADMIN)2 on Sat Apr 14, 2012 9:57 pm

    Piston Ballast Systems - Page 4 100_1630

    now open up the third hole in both plates to 10mm to take motor sholder.
    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  nigele(ADMIN)2 on Sat Apr 14, 2012 10:03 pm

    Piston Ballast Systems - Page 4 100_1631
    now tap the bearings into the first hole on both plates with the shoulders faceing inward(towards gears).
    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  nigele(ADMIN)2 on Sat Apr 14, 2012 10:08 pm

    Piston Ballast Systems - Page 4 100_1632

    next take the main gear and shaft,cut a piece off tube to fit over the shaft,about an inch longer than the shaft.
    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  nigele(ADMIN)2 on Sat Apr 14, 2012 10:12 pm

    Piston Ballast Systems - Page 4 100_1633
    next place the shaft and gear inside the tube,put in a vise and push the gear of the shaft as shown.
    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  nigele(ADMIN)2 on Sat Apr 14, 2012 10:15 pm

    Piston Ballast Systems - Page 4 100_1634

    shaft and gear seperated,shaft is not used.
    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  nigele(ADMIN)2 on Sat Apr 14, 2012 10:23 pm

    Piston Ballast Systems - Page 4 100_1635

    next find a 4mm brass nut and a small file.
    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  nigele(ADMIN)2 on Sat Apr 14, 2012 10:33 pm

    Piston Ballast Systems - Page 4 100_1636

    This is the tricky bit,taking your time and insuring that you keep the nut central carefully file the round hole in the gear to a hex that will allow the brass nut to fit tightly in it,its not as difficult as it sounds the trick is to take your time,if you over do it a bit yu can gentley tap the edges of the nut with a hammer to expand it then push the nut into the gear in the vice.
    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  nigele(ADMIN)2 on Sat Apr 14, 2012 10:43 pm

    Piston Ballast Systems - Page 4 100_1637

    now lossly asemble the gearbox as shown place the piston shaft through the gearbox and insure that the gear train runs freely.
    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  nigele(ADMIN)2 on Sat Apr 14, 2012 10:53 pm

    Piston Ballast Systems - Page 4 100_1638

    take the gearbox apart again and locate the motor plate(aly one)place over the motor hole put the drill shank into the motor plate and gearbox case locate motor screw holes (long slots)with a 2.5 mm drill transfer motor holes to the gearbox as shown,then transfer to the second gearbox plate.
    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  nigele(ADMIN)2 on Sat Apr 14, 2012 10:58 pm

    Piston Ballast Systems - Page 4 100_1639

    counter sink the motor screw holes on the inside faces.
    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  nigele(ADMIN)2 on Sat Apr 14, 2012 11:02 pm

    Piston Ballast Systems - Page 4 100_1640

    screw motor to the gearbox plate with the original screws to check fit,as shown.
    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  nigele(ADMIN)2 on Sat Apr 14, 2012 11:08 pm

    Piston Ballast Systems - Page 4 100_1641
    losly re asemble gearbox to check for free runing,if needed it is posible to slot out the motor holes to allow adjustment of the mesh between the motorgear and the idler.
    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  nigele(ADMIN)2 on Sat Apr 14, 2012 11:11 pm

    Piston Ballast Systems - Page 4 100_1642

    another veiw of the gearbox losley assembled
    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  nigele(ADMIN)2 on Sat Apr 14, 2012 11:19 pm

    Piston Ballast Systems - Page 4 100_1643

    again take the gearbox apart find some 4mm washers to use as shims on the piston shaft.
    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  nigele(ADMIN)2 on Sat Apr 14, 2012 11:47 pm

    Piston Ballast Systems - Page 4 100_1644

    next it you need to fit the shims on the piston rod gear,the other gears should not require any shims, as the original spacers are re used,it will take several atempts to get the shims correct,put the gearbox together with one shim either side of the gear clamp the gearbox together in the midle so that the idler gear is tight to turn,look at the piston gear it will most likely need more shims,take a guess at how many and which side of the gear and install them,again clamp the gearbox try to turn the piston gear if its to tight take a shim out if there is to much end float put one in,make sure that the faces of the gears are not rubbing together if they are move one shim to the other side of the gear.

    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  nigele(ADMIN)2 on Sat Apr 14, 2012 11:51 pm

    Piston Ballast Systems - Page 4 100_1645
    another view of shimming the gearbox.
    salmon
    salmon
    AMS Forum Owner

    Posts : 297
    Join date : 2011-09-02
    Age : 60
    Location : Las Vegas, Nevada - USA

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  salmon on Mon Apr 16, 2012 6:30 am

    Nigel,
    What can I say, but WOW and Thank You! You have explained things so clearly!!! I can't wait to tear into this!


    _________________
    If you can cut, drill, saw, hit things and swear a lot, you're well on the way to building a working model sub.
    david f
    david f
    AMS Treasurer

    Posts : 2115
    Join date : 2010-11-10
    Age : 70
    Location : Cumbria

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  david f on Mon Jun 25, 2012 1:26 pm

    Just for the record, I have given up on the twin 60ml syringe arrangement, I think I discussed earlier.

    Just too "wonky" (they twist etc.) and too much friction.

    I am going back to a single aluminium tube etc., inspired by our German colleagues.

    David
    Giovanni LiCalsi
    Giovanni LiCalsi
    Guest

    Posts : 170
    Join date : 2010-11-15
    Age : 70
    Location : Alameda, California, USA

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  Giovanni LiCalsi on Mon Jun 25, 2012 10:09 pm

    Do not overlook copper pipe. Some of the mechanical contractors may be in a generous mood if you tell them you are building a ballast tank for a submarine. They do not like competition. The nice thing about copper is that you can solder it together.
    tattooed
    tattooed
    AMS member

    Posts : 340
    Join date : 2011-05-16
    Age : 56
    Location : Bristol

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  tattooed on Tue Jun 26, 2012 7:07 pm

    what size aluminum tube do you need david as i might be able to help could even weld an end plate on it for you if needed
    david f
    david f
    AMS Treasurer

    Posts : 2115
    Join date : 2010-11-10
    Age : 70
    Location : Cumbria

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  david f on Wed Jun 27, 2012 3:27 pm

    https://2img.net/h/i1079.photobucket.com/albums/w507/david_forrest1/IMG_1951.jpg

    https://2img.net/h/i1079.photobucket.com/albums/w507/david_forrest1/IMG_1950.jpg

    Hope you will be able to see these. (I have had to post on Photobucket because I cannot host images on the Forum.)

    They show my larger piston tank and control board as seen at Alfold. The smaller one for Resurgam will be very similar design but 40mm aluminium pipe. (I got a 300mm length for about £6 on ebay but thanks for your suggestions.)

    I will use a standard nitrile O ring lubricated with silicone oil retained by a pipe cleaner! (Thanks for the tip Hein!)

    These piston tanks have yet to be used in a sub and form my "long term development project!"

    David
    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty FOR DAVID,piston tank protto

    Post  nigele(ADMIN)2 on Wed Jun 27, 2012 4:15 pm

    Piston Ballast Systems - Page 4 Dave_t10
    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  nigele(ADMIN)2 on Wed Jun 27, 2012 4:17 pm

    Piston Ballast Systems - Page 4 Dave_t11
    nigele(ADMIN)2
    nigele(ADMIN)2
    AMS Chairman

    Posts : 1107
    Join date : 2010-11-06
    Age : 66
    Location : Braintree, Essex

    Piston Ballast Systems - Page 4 Empty THE AMS MOTORHOME IS COMMING ALONG WELL NOW !!!!!!!!

    Post  nigele(ADMIN)2 on Wed Jun 27, 2012 4:23 pm

    Piston Ballast Systems - Page 4 Rednec10
    tattooed
    tattooed
    AMS member

    Posts : 340
    Join date : 2011-05-16
    Age : 56
    Location : Bristol

    Piston Ballast Systems - Page 4 Empty Re: Piston Ballast Systems

    Post  tattooed on Wed Jun 27, 2012 7:19 pm

    £6-00 for a 300mm bit of aluminium are you having a laugh david we put bigger bits in the bin have a word with Rich he'll tell you what i can get my hands on

      Current date/time is Fri Sep 25, 2020 8:03 pm