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Hurray!! Located and received some plan scans for the "JR More" tug from an ex South African now living in the UK! Delighted! Apart from a few misaligned scans that loose some pretty important info for the stern, I have a lot to work from. The "JR" was built by Ferguson Brothers, Glasgow in 1961. 176.3ft LOA, displacement 1654.94 tonnes. She was the last oil fired steam tug in service in any South African port. Decommissioned in 1982. Now a poorly maintained (no money!) exhibit in the Durban Maritime Museum.
When planking a static galleon model I boiled the strakes for 5 mins but think that this expanded the wood that resulted in slight shrinkage on drying out. Never thought about just wetting strakes and using the heat gun. Great idea that obviously works well. I am enjoying this read hugely.
Thanks for info Doug. Unfortunately several of the websites get error messages or have dropped access to the address. I think the Sturrock plans route seems to be the way to go (a pricey plan though for our horrendous currency exchange rate!) and was the source of the Ralph Wilmot model. Looking at some of the pics of the rudder layout when she was on the hard pending being put into the Maritime Museum, she had twin props and twin rudders...Sturrock didn't have twin rudders so obviously was built to the Sturrock plan. I have sent off a few emails and await any further guidance/info before I make any decisions. Thanks Glyn re Durban Club. I have mailed a member too.
As I have made no progress on finding any drawings of the De Mist naval harbour tug ex Simonstown, and as kindly advised by Glyn as having been built by Dorbyl in Durban with VS propulsion, I am now switching my attention to the old steam tugs of the the late 50's and 60's...particularly the JR More (built 1961) that is currently decaying in the Durban Maritime Museum. Again I am on the hunt for drawings that must be more easily available judging by the number of models build of this vessel. She had twin props (rather than Voith Schneider or Schottel) which is something that I can handle! Any help or advice gratefully accepted.
Hi Glynn Thanks for your response. I was hoping that the dreaded words "Voith Schneider" would not come up as I have no way to engineer or buy a VSP (even looked in "Graupner" site but no info on buying units and I think it will break the pensioners bank anyway! This is my first contemplated tug build so would be interested if the model tug Guys would perhaps advise what they do when the dreaded 2 words come up...do they cheat a little below the surface and substitute other propulsion sources when a VSP would be "true scale"? Glynn, what Dorbyl built SA tugs do you have knowledge off that are not VSP equipped? I think the other older Simonstown Naval tug is the "de Nuys" but I presume she will also be Voith Schneider Propeller driven. Regards and Happy New Year to you and all on MB's.
Another one of those "What is it?" posts! "de Mist" was a Naval Tug in Simonstown naval dockyard. Decommissioned about 2 years ago and awaiting "disposal" when she sank at her mooring 2 months ago. Salvaged by the SA Navy a week or two ago. Does anybody have any information on if she was locally built (South Africa) or an import. In the absence of any specific info would there be a plan available for a similar looking boat somewhere? Appreciate any advice.
No offence taken Toby I assure you. Pleased to read that there are alternatives suppliers should you be looking at going with the syringe/needle route. Still think you should consider using something smaller than the 18g that I used on the demo. Best wishes to all on this thread for a Happy New year! Cheers
Hi Toby As I mentioned, I have not practiced this method for 5+ years so there will be a few that are slightly over/undersized. Most on the demo strip I sent you dried to 2.5mm and worked fine on the 1/72 scale model. They do shrink slightly on drying. Spacing and needle size will allow for "bleed" if you intend to go to about 3mm. I can't recall the needle size I used at the time but think it would have been in the order of 22g. Fortunately (for model making 😉!) we can get needles off the shelf at Diskem here (equivalent to your Boots). Cheers
Hi Toby. Further your PM, thought I would try to demonstrate the PVA hyperdermic method as it has been about 5 years since I used it on the Flower Class Corvette. Unfortunately I only had a 18g needle to hand so "overdelivery" was a problem together with the ambient temp today that is pushing 32 degrees outside! I remembered by doing this exercise that when putting some pressure (very little) on the plunger that the PVA tends to want to drip, so the main thing is to support the needle at a constant height above the work (I used my other hand) and to move on quite rapidly as the pressure inside the syringe keeps reloading the tip of the needle. Lift the needle vertically as you move along, this keeps the rivet round. As always "practice makes perfect" so don't commit to the model without being happy with the result being achieved. Good luck!
Re syringe method. I just tried several sizes of hyperdermic needle to get the rivet size more or less right. Then ground off the sharp point on the needle and used the PVA undiluted with the needle positioned vertically above where I wanted the rivet to be. This prevented any elongation of the rivet and I only had to worry about the size being extruded. Good point about the temp...that could definitely have been a factor here!
Hi Toby I too went the route of riveting by PVA. The first problem was to thin all the hull plates on the Revell kit (my first boat) before attempting the rivets using a hyperdermic syringe and needle. Problem was "how many" and "what size"...I just forged ahead with what "looked right" at the time and probably would pay more attention should I do it today. Agree that "spreading" was a problem too. Cheers
[Score: 8/10] 35" HMS Bluebell Single Propellor (3 Blade 30mm) Direct Drive to a MFA 475- Rec 360 (3 Blade) Powered by NiMH (7.2v) 2Amp/h Batteries Controlled Through Viper Marine 15 ESC - Comments: I am adding "Bluebell" to my harbour as, in keeping with many, she represents our awakening to the model boating world! The classic Revell Platinum kit was a wonderful introduction to our hobby (although as some of use realise, she tends to be subject to numerous "breakages" as time wears on as the plastic bits get bumped or snagged at the pond - or even when being loaded in the car!).
[Score: 5/10] 42" HMS Launceston Castle Single Propellor (3 Blade) Direct Drive Powered by NiMH (7.2v) Batteries Controlled Through Mtronics Viper Marine 15 ESC - Comments: Successor to Flower Class Corvettes. This Castle Class built from scratch. As my first scratch built boat I decided to build with "surf board" keel that carries all the ballast. Model handles perfectly with no "Nodding" and rolling like a toy in rough water. Keel acts as display stand when ashore. Took 2 years to build. Pic's taken at various stages of construction on and off the water.
Just a further update on my MEKO Frigate. Thanks to the patience and advice from Doug together with a local boff friend, JohnO' with advice on electronics, I have now ventured into the realm of YouTube for the first time and am able to provide the short video suggested by Reilly4 some while ago. This sequence is returning the heli back into the hangar. The "Out"sequence is the reverse. Both "Out" and "In"are sequential on one channel of the TX. I have been told that the address below must be pasted into your browser. Hope it works. https://www.youtube.com/watch?v=04qHrO96lS0
Hope this works as I can't figure out how to post a video! Click on the media file and then on the download button. The file should then appear at the bottom of your screen. Spioenkop is officially a MEKO 200SAN class Frigate. I duplicated the unusual drive used in these boats in that they have CODAG-WARP; COmbined Diesel And Gas turbine - Waterjet And Refined Propellers. I have the main props motors and the jet drive on separate channels. The video clip shows the first test of this layout with the jet drive coming in after about 4sec of video and is switched off just before the end of the video. I was just so delighted that my system worked that I unashamedly ran it madly over-scale speed on this first outing....sorry!!
Hi Glyn I am a member of GMBC and sail Emerentia Dam. I think u Guys have a big public day coming up soon and I am thinking of bring the Spoienkop along for a sail...that is if I can fix my TX in time (battery plug in the TX broken off and I can't find a replacement).
Wish I had caught up with you earlier Doug as your input re the MEKO 200 SAN would have been of great help. Fortunately (also late in the build) I found a long lost 2nd cousin (twice removed!) who served onboard the Spioenkop on her delivery voyage in 2005 and got some good stuff from him. Also found a clip on Facebook that provided detail that I had missed. Watch the interest of the bridge officers as they notice the drone filming them! https://www.facebook.com/andre.oosthuizen.9615/videos/vb.100... Currently the hangar door and chopper movement is not connected to anything...just demonstrated by putting then in contact with a battery individually. I have a spare channel on the stick and also the on/off switch used for model aircraft engine/power cut that I use on my Corvette model for the smoke generator. The sequence I would like to achieve is 1. Activate (power on) door opens. 2. Door reaches stop ...microswitch/ (stays fully open) 3. Chopper movement switch on 4. Chopper clears hangar and reaches stop on helipad. 5. If pos, close sequence in reverse of above. Reilly4 I can let you have a short video but I need some help as to how I place a video on the website. Some more pics taken during the build process attached just FYI.
My second scratch build. SA Navy "Spioenkop". 1:80 scale. 2 Mtroniks 600 motors on the scale 40mm (home made) props running on 6v and Hobbywing 860 brushed ESC. Jetdrive (also homemade) runs on a 550 motor (I think!) and a 1060 Hobbywing ESC running on 12v. Chopper is a heavily modified Hobbyboss RN Super Lynx. Hangar door opens as well as chopper moves on helideck with worm drive and magnets. Idea is that this would happen sequentially ... but haven't managed to sort that out as I am "electronically challenged". Suggestions welcome!