|||
Not Registered
Go AD FREE & get your membership medal
BRONZE
Less Ads
SILVER
GOLD
Ad Free
Cancel
Anytime
ยฃ2.50
ยฃ4.50
ยฃ6.50
Subscribe
Go AD FREE & get your membership medal
BRONZE
Less Ads
SILVER
GOLD
Ad Free
For A Whole Year!
ยฃ25
ยฃ45
ยฃ65
Donate
You Will Be Helping Towards:

  • Domain Fees
  • Security Certificates
  • iOS & Android App Fees
  • Website Hosting
  • Fast Servers
  • Data Backups
  • Upkeep & Maintenance
  • Administration Costs

    Without your support the website wouldn't be what it is today.

    Please consider donating towards these fees to help keep us afloat.

    Read more

    All donations are securely managed through PayPal.

    Many thanks for your kind support
  • Join Us On Social Media!
    Download The App!

    Login To
    Remove Ads
    Login To
    Remove Ads

    Model Boats Website
    Model Boats Website
    Home
    Forum
    Build Blogs
    Media Gallery
    Boat Clubs & Lakes
    Events
    Boat Harbour
    How-To Articles
    Plans & Docs
    Useful Links
    Search
    Search
    Forum
    LATEST SMOKER, E-CIG ELEMENT
    That one turned out quite well Martin. I was on the lookout for some sort of can to put the tank in and was prowling round our local Bunnings home depot/hardware store and was in the plumbing section when I suddenly had an epiphany. Remembered I had 40mm waste pipe at home so I bought 2 end caps and a bit of sanding drilling and fitting later, voila' version X. not that small but plenty small enough to go in most boats and very easy to make. There is a turn of loose wire inside so I can lift the tank up to fill it. Strange that it would not work as planned with a bottom air feed, and had to work in reverse. Not to worry, it makes houseloads of smoke, is self contained and easy to fill, (end caps are just a push fit and the top holds the tank in place by the mouth piece) which is pretty much what I was after. I know we can use the vape coils now and I'm sure I can make a small version with just a coil (same idea as the alloy one, - just need to make or find a smaller can) not too worried at the moment as I think I have enough smoke devices for now. Be interesting now Myself and Graham have kicked it off, to see what the rest of the crew come up with (I think there are a few under way at the moment). I'm sure no one is going to pay silly prices for the commercial smokers now! (which are pretty much what we have done but in a colorful tin) when you can do it yourself. Seen a few vids on You Tube of people making their own by winding coils on f/glass rope (stove door
    seals
    ). They work ok but more effort to make. Ready made coils are so cheap (wound coils and replacement screw ins) that it's not worth mucking around. You can buy boxes of various wound coils very cheaply if you make something to use those in. Endless fun. Thank-you E-Cigs!๐Ÿ˜Š JB
    4 years ago by jbkiwi
    Forum
    Electronic Speed Controllers
    I guarantee it won`t blow my
    seals
    Martin. All will become clear before the test. Peter.๐Ÿ˜€
    5 years ago by MouldBuilder
    Forum
    Electronic Speed Controllers
    When you have your Gato trimmed correctly it should only be about a mug full of water, maybe less. But even pumping that amount of water in to the tank the air pressure will definitely be enough to to pop
    seals
    . Martin555.
    5 years ago by Martin555
    Forum
    Sub dive system.
    "why would you risk losing sight of it." That's the whole thrill of it Martin. "Obviously the deeper you go the higher the pressure, the air inside the compartment will expand." Er .. No! Due to the cooling effect of the water it will actually contract, thus reducing the internal pressure. Venting air from the dive tank to the internal tube counteracts this effect. Trick is not to overdo it and blow the
    seals
    . Some systems use two smaller tanks and vent to forward and aft sections separately. Too complex for me๐Ÿ˜ฎ I'm off to the cellar to dig out my Akula kit and read up on how that should work. Cheers, Doug ๐Ÿ˜Ž
    5 years ago by RNinMunich
    Forum
    Motor reversing
    Hi Pete, "If the water compresses the air within the chamber, would the cylinder swell and the
    seals
    be compromised." Not if everything is properly dimensioned; pressure hull and bulkhead thickness, sometimes even a separate chamber to take up the air expelled from the tank or bladder (๐Ÿ˜ฎ) The pressures involved at the depths our subs will (hopefully!) operate are not that great. For every 10m you go down the pressure increases by about 14.6psi, i.e. 1 x normal atmospheric pressure at sea level, 1 bar or atm. So at 2m maximum, more is not recommended or indeed particularly useful for models, the pressure is about 17.6psi. Not a too dramatic increase (ca 20%) which pressure hull walls and bulkheads of ca 5mm perspex or similar should cope with with ease. Of course the bulkheads need to be secured with more than just friction on the O rings!! I'll dig out my dive-tank and check the wall thickness. Cheers, Doug๐Ÿ˜Ž PS As I wrote below, somehow I have acquired two copies of Brรผggen's book on model sub technology. I think an Aunt sent me a copy for my birthday, about a month after I already bought it ๐Ÿค” If you want my spare copy PM or e-mail me!
    5 years ago by RNinMunich
    Forum
    Motor reversing
    Thanks guys. I now see exactly what I have taken on. I will sort through all the information posted by you all and see what is what. I really am looking forward to getting further into the dive system. I see that you can buy them complete but I think I would like to have a go. I have seen a commercially available WTC where the end caps have been screwed in using four screws behind the last seal. I have a question Doug. If the water compresses the air within the chamber, would the cylinder swell and the
    seals
    be compromised. It is hard to understand the pressures involved. Martin`s idea does mean that there is no additional stress on the
    seals
    but limits the dive depth. I would like to go deeper so will have to review my methods and see how this can be achieved. I have some reading to do looking at all the suggestions. Thanks again all.๐Ÿ˜Š
    5 years ago by MouldBuilder


    About This Website
    Terms of Service
    Privacy Policy