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๐ฌ Vintage Model Works 46" RAF Crash Tender
8 years ago by ๐บ๐ธ figtree7nts ( Admiral)
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Hi Robbob
Thanks for answering my question, I way just curious about how the parts are cut out. ▲
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Martin555
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Remove Ads ๐ฌ Vintage Model Works 46" RAF Crash Tender
8 years ago by ๐ฌ๐ง robbob ( Admiral)
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Hi figtree7nts.
The parts are cut with a CNC router which seems to give very consistent and accurate cuts and I have not needed to 'ease' any of the interlocking parts. I recall that the Aerokits 34.5 inch model I built all those years ago needed a little work to make the parts fit, they may have been die cut. It's also very good quality ply and obeche wood in the kit. Robbob ▲
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Martin555
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๐ฌ Vintage Model Works 46" RAF Crash Tender
8 years ago by ๐บ๐ธ figtree7nts ( Admiral)
โง 49 Views ยท 1 Like
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Question are the parts die cut or are laser cut?
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Martin555
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๐ฌ Vintage Model Works 46" RAF Crash Tender
8 years ago by ๐ฌ๐ง onetenor ( Sub-Lieutenant)
โง 49 Views ยท 1 Like
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Vinegar etc is fine once dried out and allows for quite sharp bends Steaming also is good if steamed long enough. However V cuts are very good too .Good luck with the build it looks good so far . John
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Martin555
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Remove Ads ๐ฌ Vintage Model Works 46" RAF Crash Tender
8 years ago by ๐ฌ๐ง robbob ( Admiral)
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Hi onetenor.
Good suggestions but... steaming works extremely well for gentle curves and I have used this method very successfully to form the hull skins and strakes. In this case the cabin sides need to bend quite sharply in a couple of places on each side so the 'vee' cuts allows the wood to do this without the fibres of the outer ply tearing or the ply snapping. Not sure that I'd want to dunk the wood in vinegar or ammonia though ๐ฏ Thanks. Robbob ▲
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Martin555
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๐ฌ Vintage Model Works 46" RAF Crash Tender
8 years ago by ๐ฌ๐ง onetenor ( Sub-Lieutenant)
โง 49 Views ยท 1 Like
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Most woods including ply bend better when soaked ( vinegar or ammonia is better than water ) but water is ok and is a bit better when hot.Steaming works even better
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Martin555
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๐ฌ Vintage Model Works 46" RAF Crash Tender
5 years ago by ๐ฌ๐ง Boat660 ( Able Seaman)
โง 53 Views ยท 2 Likes
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Thanks Rob, will do.
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Remove Ads ๐ฌ Vintage Model Works 46" RAF Crash Tender
5 years ago by ๐ฌ๐ง robbob ( Admiral)
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Hi Russell
I assume that you are referring to bending the stringers and skins? There's no need to be worried, the ply skins respond very well to heating with a hot air gun (electric paint stripper) and the obeche stringers, if well steamed, bend fairly easily too. Scratch that itch and buy the kit, you won't regret it. Robbob.๐ ▲
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๐ฌ Vintage Model Works 46" RAF Crash Tender
5 years ago by ๐ฌ๐ง Boat660 ( Able Seaman)
โง 55 Views ยท 4 Likes
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Hi Rob,
I briefly had a conversation with you last weekend at AP. This is a general question on the build blog, (by the way your build and finish is exceptional) that I have read several time to familiarise myself on the build detail and would welcome your advise. I'm itching to purchase the fire tender. I'm a confident model builder, however I have never built a wooden boat before, and note your comments on the gunwhale stringer, and skins which is holding me back from the purchase.๐ค Russell ▲
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๐ฌ Gunwhale stringers.
8 years ago by ๐ฌ๐ง BOATSHED ( Lieutenant)
โง 49 Views ยท 1 Like
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I live in Darenth on the edge of Dartford, its a bit of a trip but its a great pond. I could go out to Maidstone as well, that's a good pond and if you want to use ic then its a Saturday job for those. St Albans or Stevenage is a fair old run from you.
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Remove Ads ๐ฌ Gunwhale stringers.
8 years ago by ๐ฌ๐ง robbob ( Admiral)
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Hi Boatshed.
I'm actually in north west London, Mill Hill/Hendon and there are no local boating lakes remaining. The nearest may well be St.Albans or Stevenage, also there are no model clubs or societies that I am aware of in my area which is a shame as a club membership and the resulting breadth of knowledge and experience would be very welcome. Also, Clapham is 'sarf' london and there be demons! No disrespect to south London members. ๐ Robbob ▲
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Martin555
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๐ฌ Gunwhale stringers.
8 years ago by ๐ฌ๐ง BOATSHED ( Lieutenant)
โง 49 Views ยท 1 Like
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Hi just seen your reply, I clicked on your name robbob and it came up you are in London, I don't know where about's
in London you are but if there is a great pond on Clapham Common, its called Clapham Common Long Pond. its a good pond I used to go there quite a lot, will proably start again come next spring. Hope this helps. ▲
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Martin555
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๐ฌ Gunwhale stringers.
8 years ago by ๐ฌ๐ง robbob ( Admiral)
โง 49 Views ยท 1 Like
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Hi Boatshed.
Yes it's an outrunner. If heat build-up is a problem I have already considered a water cooled mount as a retrofit option. I won't really find out how she runs until her maiden voyage, assuming I can find somewhere reasonably near me ๐ญ . Rob. ▲
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Martin555
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๐ฌ Gunwhale stringers.
8 years ago by ๐ฌ๐ง BOATSHED ( Lieutenant)
โง 49 Views ยท 1 Like
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Hi again I have just looked up this motor, Turnigy SK3 4250 and on Hobbyking's site it states its on outrunner, how ill you cool it as surely it will get hot running at speed ?? With a Vosper hull you have to run it fast to get the enjoyment from it as they look so good planning at high speed.
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Martin555
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๐ฌ Gunwhale stringers.
8 years ago by ๐ฌ๐ง robbob ( Admiral)
โง 49 Views ยท 1 Like
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Hi Dave.
Yes, sorry, my typo. The battery packs are 9.6v at 5000mAh, so the correct figures for the packs in series are 18.2v at 5 amps. I will correct my profile entry ๐จ I do have a wattmeter in the wiring loom but as the boat has not even been in the test tank (bath) yet I have not been able to measure current under load. I can very easily re-configure the battery set-up to parallel to give me 9.6v at 10A to give me a lower 4800 rpm as an experiment but I will try it as it stands first. At this moment in time I have just put the second coat of red oxide on the lower hull so at the current rate of progress I don't see it getting it's maiden voyage until the spring of 2017. in fact I still need to find somewhere local(ish) to run it and if anyone has any suggestions? I'm in NW London. Rob. ▲
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Martin555
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๐ฌ Gunwhale stringers.
8 years ago by ๐ฌ๐ง Dave M ( Vice Admiral)
โง 49 Views ยท 1 Like
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Hi Rob
Just read this post and seen your profile details re this model. I believe you may have mis-typed the mAhr figure and think 5000 (5Amp) was your intention. Putting two 5amp batteries in series will double the voltage but the current capacity will remain at 5amp. Putting two batteries in parallel will double the amperage capacity but keep the voltage the same. Using a 500kV brushless at 19.2 volts could result in revs of 9600. Your motor is rated at 57amps with a wattage of 1350. The ESC should be fine but I suspect the batteries may struggle. A Wattmeter would be useful to check the actual current under load. Some pics on the water would be good Dave ▲
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Martin555
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๐ฌ Gunwhale stringers.
8 years ago by ๐ฌ๐ง robbob ( Admiral)
โง 49 Views ยท 1 Like
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Hi Boatshed.
The motor is a Turnigy SK3 4250 controlled by a 90A boat ESC by Hobbyking, batteries are 2 x 9.6v 500mAh in series. This is a recommended combination by Vintage Model Works. incidentally the motor in my original 34" crash tender was a Taycol Supermarine. I would thoroughly recommend a brushless motor and a boat ESC to give you the reversing function. Fortunately there is a wealth of useful information about brushless motors on this site and I'm sure that someone more knowledgeable than me can advise you on the most suitable motor/ESC/battery combination for your boat. Mine has yet to have it's maiden voyage so I can't report on the performance but I'm quite confident that it will be a lot quicker than the one I built all those years ago ! Rob. ▲
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Martin555
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๐ฌ Gunwhale stringers.
8 years ago by ๐ฌ๐ง BOATSHED ( Lieutenant)
โง 49 Views ยท 1 Like
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Hi, she's looking good, could you tell me what motor and esc are you going to put in her. I have a 46" that I acquired from a friend. I have taken the ic engine out of her and was going to go down the road of putting in a Taycol electric motor but I'm still unsure. All the KV on the new brushless I do not understand, I find it all confusing.
I have got a Proboat Miss Geico she goes like a rocket. She has a brushless in her and I use lipo's in her. ▲
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Martin555
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๐ฌ Chine stringers.
8 years ago by ๐ฌ๐ง robbob ( Admiral)
โง 56 Views ยท 1 Like
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Hi justintime2001
I am pleased that my blog will be of help to you, I have found some invaluable advice and tips on this site and have been inspired to incorporate a high level of detail in my model to emulate the outstanding examples that I have seen here. It's a shame that the 'plans and docs' page for Fire Boats is hampered by very limited and poor content which other members seem to have access to by other means, something to do with copyright I understand. I hope that you enjoy the construction of you boat as much as I have....so far. Robbob. ▲
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Remove Ads ๐ฌ Chine stringers.
8 years ago by ๐ฌ๐ง justintime2001 ( Leading Seaman)
โง 56 Views ยท 2 Likes
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I have just ordered this kit. This blog is going to be so helpful to me as a newbie, thanks.
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Martin555
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๐ฌ Chine stringers.
8 years ago by ๐ฌ๐ง vosper ( Master Seaman)
โง 63 Views ยท 1 Like
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Thats right Rob. I wish that I had tried to steam the skins on my boat before trying to fit them but due to the tight curve I ended up cutting the skins on the bow sections into three parts and reinforcing both inside and out of the hull with fibreglass. My wife is already asking what I want for Christmas, I quite fancy the Aerokits Sea Commander. Guess I`m hooked now.
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Martin555
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๐ฌ Chine stringers.
8 years ago by ๐ฌ๐ง robbob ( Admiral)
โง 57 Views ยท 2 Likes
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Hi Vosper.
Glad you're enjoying my build blog. I also have immensely enjoyed the construction process so far. Do you mean fitting of the skins at the bow section?. I'll be covering that shortly. Rob. ▲
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๐ฌ Chine stringers.
8 years ago by ๐ฌ๐ง vosper ( Master Seaman)
โง 63 Views ยท 1 Like
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I am enjoying your build and I am especially looking forward to seeing how you will fit the bow sections. I am in the process of painting my 34 inch fireboat. She is the first wooden model that I have built and I have thoroughly enjoyed the process.
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Martin555
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๐ฌ Propshaft
8 years ago by ๐ฌ๐ง vosper ( Master Seaman)
โง 63 Views ยท 1 Like
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Are you on the night shift ? Carry on the good work, great job. ๐
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Martin555
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