Topic: HMS Tireless 1/64 Build (Read 48802 times)

Subculture · « **Reply #25 on:** December 17, 2008, 03:09:47 pm »

More PVC than a bondage convention!

No 720bb's available at 308. Apparently they sold out a while ago, and Protech aren't supplying them anymore.

Might be worth doing a search on here, as I seem to recall someone was knocking out Graupner 720's fairly cheaply.

Andy

Mankster · « **Reply #26 on:** December 22, 2008, 11:26:23 pm »

I received the motor I am going to power Tireless from Sheerline Model Submarines. Its the same drive unit they currently supply in their 1/64 Trafalgar kits. Shown next to a 550 motor for size comaprison. The motor itself is a 385 sized unit, which is mated to a smooth turning 5:1 compact planetary gearbox. All Sheerline Trafs I have seen have had more than enough motive power on 12v using this motor-gearbox driving the same multiblade prop as mine, so this should do fine.

colin-stevens · « **Reply #27 on:** December 23, 2008, 07:57:56 am »

you dont hang around do you? rready for the first brockwell in 2009 then!!!???

Mankster · « **Reply #28 on:** December 23, 2008, 09:38:02 am »

Quote from: colin-stevens on December 23, 2008, 07:57:56 am

you dont hang around do you? rready for the first brockwell in 2009 then!!!???

Whilst I aim to make it for the morning session of the Jan 11 Pool run, Tireless will never be ready for that. I'll do my best to get her to a sailable condition for the last Brockwell Lido run of the season. Not much time to spend on her over the holidays, still fine tuning the bits that to make the WTC, working out where the electronics will all go. I am planning on fitting 2 ESC's so I can use it with twin motor subs as well but I havent got them yet.

Subculture · « **Reply #29 on:** December 23, 2008, 04:42:59 pm »

Have you purchased your ESC's yet?

Mankster · « **Reply #30 on:** December 23, 2008, 05:45:42 pm »

Nope!

Mankster · « **Reply #31 on:** December 30, 2008, 11:23:57 pm »

The main WTC is nearly done, just electronics to install and wireup, and shorten the tie rods. I couldn't resist puting it all together to see how it looks. Its a rather different construction to Turbulents Vanguard, under construction at the moment, as I will be using piston tanks in this one.

Turbulent · « **Reply #32 on:** December 31, 2008, 11:30:42 am »

You like your Piston tanks - only had my P Boat fitted with the Ron perrot type & had nothing but trouble with them. I have to admit that when working the system is very stable.
Engineering Pistons is still a little out of my league as well!

Mankster · « **Reply #33 on:** December 31, 2008, 12:57:15 pm »

I will be using Engel piston tanks in this one but piston tanks are relativily easy to make. If you can turn an end cap you can make a piston. I looked into it for this build before taking the easy wayout, but I will be making my own small piston trim tanks for my next build. The hardest part is finding a source of cheap spur gears and matching pinion (unless you know how to cut your own) and press fitting the ballrace bearing which carries the piston rod on the spur gear. easiest solution seem to be Orings on the actual piston, though Airzet seats are neater but hard to get holf of, in the UK at least

Subculture · « **Reply #34 on:** December 31, 2008, 02:00:11 pm »

You don't need to worry about press fits these days, we have Loctite.

Turbulent · « **Reply #35 on:** December 31, 2008, 04:15:06 pm »

I'm going to have a go at building a Piston one of these days, I've an idea how I want to do it.

I think MFA do Brass gears.

colin-stevens · « **Reply #36 on:** December 31, 2008, 04:34:24 pm »

somewhere on this site is a link to a manufacturer of gears. cant remember where, may be in the lifeboat section. when i get more time i'll oink it out and post it here.
off to destoy the last of my brain cells now, so have a good'un, and all the best
colin

Subculture · « **Reply #37 on:** December 31, 2008, 07:45:01 pm »

HPC do gears, but aren't cheap.

Muffett are cheaper, as they also sell moulded gears (HPC are machine cut). Metals gears aren't essential, and from a wear point of view, plastic is better, but they will need to be thicker to avoid stripping.

Very cheap options include stripping junked printers (especially laser printers), old electric drills. Also worth looking at spare parts for R/C cars, as the gears for these can often be quite reasonabley priced.

Meccano have brass gears available. There not especially cheap, but they're strong and well made from brass and/or plastic.

Mankster · « **Reply #38 on:** February 04, 2009, 10:02:45 pm »

I had most of last month off building, but I am back at it now. Here I have nearly completed the separate motor housing. I am installing the motor in its own small WTC which can be dedicated to the particular sub with just the main WTC containing the ballast tank moved between hulls. I figured the slow turning geared motor for this multibladed prop may not be suitable for other sub where I usually direct drive the props. Though to be honest, I can only seem my self using the main WTC in 1 other hull, my other hulls will probably have a dedicated dive system.

Here are the bits that go together the ALU motor mount that also holds the Simmering seal is fashioned after the Engel item that is supplied in the Lafayette kit.

Here is dry fitted. I still have to make the oring seals for the endcaps and tidy off the threaded rod. I will be using domed nuts and small orings to waterproof the threaded rod ends. The unit id 60mm dia and 10cm long.

Martin (Admin) · « **Reply #39 on:** February 05, 2009, 10:31:42 am »

What's that purple 'Signal Quality' device?

Mankster · « **Reply #40 on:** February 05, 2009, 12:35:02 pm »

Quote from: Martin - Forum Admin on February 05, 2009, 10:31:42 am

What's that purple 'Signal Quality' device?

Its an 8Ch Receiver by Schulze. its an a 40Mhz PPM rx that has onboard signal post processing and can filter out glitches and interferance passing on only clean signals to the servos. Used mainly by the flyboys on 35Mhz but useful for submarines and fast electrics. It has a 'glitch counter to show how many times the RX has had to correct the signal, so helps with rx and aerial placement, range checks and an indiction of how 'electrically dirty' the enviroment your sailing in is. http://www.schulze-elektronik-gmbh.com/alpha-e.htm IMHO these are one of the best 40MHZ FM Rx's available, they take Futaba crystals too.

Mankster · « **Reply #41 on:** February 05, 2009, 12:37:19 pm »

Another good 40MHZ rx is the Hyperion range that also features transmitter recognition, so if someone else switches on, on your frequency, it only accepts signals from yours.

Turbulent · « **Reply #42 on:** February 05, 2009, 01:04:21 pm »

Trying to get hold of a simmering seal - where'd you get yours?

Mankster · « **Reply #43 on:** February 05, 2009, 02:35:49 pm »

Quote from: Turbulent on February 05, 2009, 01:04:21 pm

Trying to get hold of a simmering seal - where'd you get yours?

I've got a stack of these 4mm x 11mm, PM your address and I'll put one in the post gratis.

Turbulent · « **Reply #44 on:** February 06, 2009, 11:57:25 am »

PM sent - Cheers mate.

Turbulent · « **Reply #45 on:** March 11, 2009, 09:37:04 am »

All gone quiet down there!

Mankster · « **Reply #46 on:** March 13, 2009, 05:47:51 pm »

Yep, had a big tidy up in the garage, WTC nearly done, just a bit of wiring to sort out. Then its back to sorting out the hull. Pics soon.

Mankster · « **Reply #47 on:** April 17, 2009, 11:35:17 pm »

After a couple of months busy with other things, I have finally got around to doing some more work on this project. The WTC is now finished save for save for fitting the push rod seals and other tiny bits. Pitch controller still to be fitted. I hope to have her bath tested in a week. 2x 600ml piston tanks and Engel controller. Battery is 12v 4.6AH and goes under the WTC.

Circlip · « **Reply #48 on:** April 18, 2009, 02:53:03 pm »

That's a really well executed lump of engineering Mankster.

Regards Ian.

Mankster · « **Reply #49 on:** April 20, 2009, 11:49:15 pm »

Tight, but she fits

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Author Topic: HMS Tireless 1/64 Build (Read 48802 times)