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Author Topic: HMS Brocklesby semi scratch build  (Read 163253 times)

ballastanksian

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Re: HMS Brocklesby semi scratch build
« Reply #175 on: December 22, 2015, 07:40:47 PM »

Amen to that Mr Spider :-))
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radiojoe

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Re: HMS Brocklesby semi scratch build
« Reply #176 on: December 29, 2015, 04:26:41 PM »

didn't do much to Brock over the holidays, but now have all the running gear, and fed up with watching all the repeated stuff on telly I thought I'd have a good day on Brock, the result is the shafts are now fitted, still needs a bit of filling and fairing where they exit the hull, but quite pleased with the outcome, next will be the motors.
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Mark T

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Re: HMS Brocklesby semi scratch build
« Reply #177 on: December 29, 2015, 07:04:22 PM »

Hi Joe I really like the extended inner shafts I always think that this set up looks great.  I would imagine that they get well lubricated by the water when running but do you have to take corrosion precautions when the boat is sitting idle?  I have never used this method so I was just wondering?
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ballastanksian

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Re: HMS Brocklesby semi scratch build
« Reply #178 on: December 29, 2015, 07:08:29 PM »

The old telly does start to etch away important parts of your brain after a while doesn't it! I find the aniumated films the best to be honest. Ok, the plot is usually formulaic, but at least it is harmless fun.

Your return to progrees has been very successful Joe. By the way, did you exhibit at a recent show mentioned January Model boats? I cannot remember where I put my copy to give the name of the event! The show looked good despite the SWA displays being put in a quiet corner.
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radiojoe

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Re: HMS Brocklesby semi scratch build
« Reply #179 on: December 29, 2015, 07:29:55 PM »

Hi Mark, the shafts are the Raboesch waterproof type at 60 the pair they're not cheap, but the inner shaft is high quality stainless steel so no rust problems. :-))

Hi Ian, the SWA show was at Portsmouth Dockyard Christmas pageant I couldn't make it this year. {:-{
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radiojoe

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Re: HMS Brocklesby semi scratch build
« Reply #180 on: January 02, 2016, 04:11:42 PM »

A bit more done over the last few days, fitted the motors/esc's etc. , I fitted the shafts as per plan but because the aft part of the hull sweeps up to a small transom it made the motors fairly high so by inverting the gear boxes I was able to get the motors a bit lower.
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ballastanksian

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Re: HMS Brocklesby semi scratch build
« Reply #181 on: January 02, 2016, 06:32:45 PM »

Your layout is very tidy Joe. I have been refitting a Tug boat this week and have found the hull shape to be much kinder to such work than a fine hulled destroyer.

Looking good Matey. The show that I mentioned was at the Rhythe at Hayling Island in September, so you may have been there.
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radiojoe

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Re: HMS Brocklesby semi scratch build
« Reply #182 on: January 02, 2016, 07:07:02 PM »

Hi Ian, yes the 1:48 hulls do give a lot more scope,  yes I was at the Mill Rythe show, it was a good show and we did some sailing displays in their swimming pool, Mill Rythe Holliday village host a lot of events and that weekend was for the veterans and Algerine Association, sadly their numbers are getting rather depleted these days, when asked about what they did they just say they were doing a job,, brave men in my book.  O0
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ballastanksian

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Re: HMS Brocklesby semi scratch build
« Reply #183 on: January 02, 2016, 07:12:11 PM »

Amen to that. Sadly that is life, no one lives forever and so one day all our WW2 Veterans will have been laid to rest to join their comrades who died decades past and at such a tragically young age doing their bit for us.
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Re: HMS Brocklesby semi scratch build
« Reply #184 on: January 02, 2016, 09:56:31 PM »

Hi Joe, I notice that you have a double universal joint on each motor, is there a reason for that?
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radiojoe

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Re: HMS Brocklesby semi scratch build
« Reply #185 on: January 02, 2016, 10:35:40 PM »

The double couplings are just to get the motors further forward so they are just about accessible from the large access under the main superstructure, I'm sure there are other ways I could have done this but it works for me. %)
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radiojoe

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Re: HMS Brocklesby semi scratch build
« Reply #186 on: January 05, 2016, 05:00:49 PM »

Did a leak test on the hull yesterday and had the running gear working, everthing works fine and I'm very pleased with the bow thruster that works just as it should, at this time I didn't have the 12 volt battery leads, so I had the 12v SLA battery in place and two nimh batteries connected to the ESC's this was fine for test purposes, but the main motors will run on 12 volt and as the bow thruster motor is only 7.2 volt I'll put a diode in the supply to the thruster ESC effectively halving the voltage, after 30 minuits there were no leaks, which is always nice.
so today the aft deck was bonded on, the fore end of this deck is over hung by the upper deck by approx 5" this will make painting in that area a bit of a pain so to make it a little easier I'm making the structures under that area in separate modules that will slide in place after painting, well that's the plan anyway.
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Starspider

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Re: HMS Brocklesby semi scratch build
« Reply #187 on: January 05, 2016, 05:06:57 PM »

No leaks is good Joe  :-))
Will you make the modules under the upper deck removable or fix them.
She is looking very good. Nice running gear as well.
colin
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radiojoe

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Re: HMS Brocklesby semi scratch build
« Reply #188 on: January 05, 2016, 05:23:30 PM »

Thanks Colin, yes the modules will fixed after painting is done, it's an attempt to make painting this area a bit easier, so the modules will have all the detailing on them before final fixing.
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Starspider

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Re: HMS Brocklesby semi scratch build
« Reply #189 on: January 05, 2016, 05:40:24 PM »

Sounds like a good plan shall look forward to seeing the results.
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ballastanksian

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Re: HMS Brocklesby semi scratch build
« Reply #190 on: January 05, 2016, 09:41:37 PM »

Glad to hear that everything worked first time. That said you have done a few so you know what you are doing!

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radiojoe

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Re: HMS Brocklesby semi scratch build
« Reply #191 on: January 06, 2016, 05:15:36 PM »

I had planned on dropping the voltage from the 12 volt battery for the bow thruster which is 7.2 volt, but as the main motors are rated at 4.5 to 15 volt it would seem to me not worth the bother when I can run the whole boat on 6 volt, so have decided to do just that as there was ample power when I did the test with a 7.2 nimh battery, I thought why complicate things when you don't need to.  %%
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ballastanksian

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Re: HMS Brocklesby semi scratch build
« Reply #192 on: January 06, 2016, 11:19:08 PM »

I went for a distribution board on 7.2 volts for the destroyer, and have done so for the Tug saving lots of different batteries etc.

Is your 6volt battery an Lead acid? It will give you ample ballast as well as power just like many tug builders do.
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radiojoe

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Re: HMS Brocklesby semi scratch build
« Reply #193 on: January 07, 2016, 09:34:06 AM »

Yes Ian the 6 volt is an SLA it's replacing a 12 volt SLA, but I had a thought last night I've already got a 12 volt smoke generator for the boat that doesn't run that well on 6 volt so I may have to rethink power options, a distribution board may be the answer, I'll look into that.  :-))
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Starspider

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Re: HMS Brocklesby semi scratch build
« Reply #194 on: January 07, 2016, 09:36:58 AM »

You can get small boards that will convert 6v to 12v if you don't want too much current, Maplins used to have them.
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unbuiltnautilus

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Re: HMS Brocklesby semi scratch build
« Reply #195 on: January 07, 2016, 12:17:41 PM »

Component Shop sell them too.
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radiojoe

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Re: HMS Brocklesby semi scratch build
« Reply #196 on: January 07, 2016, 02:11:55 PM »

Thanks for the suggestions, I've looked at a few options and decided to order a 6 volt smoke generator from OZ, this keeps things simple and as a bonus my Springer tug Gopha Girl will be getting retro fitted with the spare 12 volt smoke gen. I made her exhaust stacks smoke able  when I built her, and I can remove enough ballast to account for the smoke unit, we'll see how it goes.
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radiojoe

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Re: HMS Brocklesby semi scratch build
« Reply #197 on: January 11, 2016, 03:14:59 PM »

Spent a couple of days doing a part of the build I like best, detailing, this is the area between the decks which is easier to do at this stage, before bonding the main deck on, as said previously the two outer structures are loose and will be painted separately and fitted after painting the area. this stage is also where the stock of moulded fittings come in handy you can adapt some fittings to suit other purposes,  a 1:96 ammo locker makes a reasonable 1:48 electrical box or a 1:96 large locker makes a 1:48 small locker etc.
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Re: HMS Brocklesby semi scratch build
« Reply #198 on: January 11, 2016, 05:19:47 PM »

Very nice work Joe, your mouldings are impressive if I squint it looks photographic very cool.  :-))
colin
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Re: HMS Brocklesby semi scratch build
« Reply #199 on: January 11, 2016, 06:53:06 PM »

I particulary like 2327, it really looks like you are in the room taking the photo :-))
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