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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Back in the Groove ( Leading Seaman)
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Graham93,
That plan looks exactly like the one I have - only mine is much more yellow! I have 2 other documents - the Building Instructions and "Constructional Details" ▲
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Remove Ads ๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Graham93 ( Vice Admiral)
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฟ๐ฆ redpmg ( Commodore)
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Looks like there were only 4 actual designs Doug - 3 specific fireboat types/prototypes - the other 7 based on seaplane tenders - obviously with appropriate water cannon fitted - most of us have never heard of the 55' and 60' versions before - and we are interested modellers.
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Back in the Groove ( Leading Seaman)
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Thanks Elsrickle - really helpful to understand all factors affecting performance
Bill ▲
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Martin555
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฟ๐ฆ redpmg ( Commodore)
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Whoops - engage mind before opening mouth ........
Thought you were talking about models of which there must have been thousands of versions built including commercial toy types - a scratch built 6' one I saw running in the sea - looking just like the real one - powered by a 25cc 2 stroke motor. But the Fireboats everyone thinks of are 93 & 94 . Strange the fascination with those when they were the only two ever built.............. ▲
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฉ๐ช RNinMunich ( Fleet Admiral)
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Agreed Sub.
There were actually ten versions of the Fire Float (seemingly often erroneously called a 'Crash Tender') ranging from 37.5' to 60'. ▲
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Elsrickle ( Warrant Officer)
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Hi it could have been tried it first on 11volt very fast and very unstable when you gave it full throttle. Thatโs the reason am on 7 volt lipos
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Rookysailor ( Commodore)
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The 1/12 scale model was 46" in length not 42", as the real boat was 46ft, 1/12 equals 1" to the foot.๐
Cheers, Peter ▲
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Back in the Groove ( Leading Seaman)
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Hi, I think found a post from you around a year ago re a 46โ Vosper model, where you said your boat was โa bit fast at 11vโ. Is your boat noisy relative to others?
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Elsrickle ( Warrant Officer)
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Back in the Groove ( Leading Seaman)
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Thanks Elsrickle. I think you may have the 42" 12th scale model? I only have one motor, and yours seem to be very powerful. I'm hoping not to have any leaks, but am now wondering if my rudder and prop tube will be leaky - Maybe I do a test in the bath!!๐
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Remove Ads ๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Back in the Groove ( Leading Seaman)
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Hi Martin555, Graupner told me to ask a supplier in the UK, or at a Model Boat Club - fair enough, but there are so many different opinions!! - 600 or 850 brushless being the most common. M-troniks recommended their G2 Hydra50, which I quite like the idea of, as they are UK based, and "waterproof". I'll do some comparisons of similar 1400kv motors, but as a beginner, I think it makes sense to use a "matched" system?
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Elsrickle ( Warrant Officer)
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I did a refurbish on one I got on eBay
Fitted 2 brushless HPD 2920-4000 with 60a hawk escโs running with 30 mm 3blade props also fitted rubber gaiters on top of rudder shafts as they were very close to the water line and I kept getting water seepage in the stern ▲
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Graham93 ( Vice Admiral)
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I did some searching on the web and found some info on brushless motor sizes and suggestions based on the length of the hull. Needless to say, I can't find it again when I searched today so that I could let you have the link๐ค It was 4-5 months ago.
I don't know if there are better options, there probably are. I've been lucky as the motor I bought works fine, so I haven't had the expense of having to try a different one. Graham93 ▲
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Martin555 ( Fleet Admiral)
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That will be interesting to see what you get back from Graupner and Mtroniks.
I have made many many model boats and there seemed to be only two ways to fined out what motor for what boat, and that was to experiment or know someone who has already made the boat that you want to make. Now with the internet and the good members of this site it is much easer. Martin555. ▲
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Back in the Groove ( Leading Seaman)
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Hi Martin555,
Many Thanks for this - I'd not seen that post. I've actually written to Graupner and Mtroniks today to ask for a recommendation, so will see what I get back. It does seem to be a dark art for the inexperienced though! ▲
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Martin555 ( Fleet Admiral)
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I have looked at some other posts and found this By dbninja.
His boat is a 34" Crash Tender. Power Is Graupner speed 600 8.4v on a 9.6v nimh pack, prop Is 40mm 2blade. Hope this helps. Martin555. ▲
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Martin555 ( Fleet Admiral)
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"How did you decide what size motor to use?"
Now that is a very good question. I too would know how to chose the right motors for boats. Obviously it depends on the type of boat that you want them for. Maybe it is a case of trial and error or is there a formula ? Martin555. ▲
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Back in the Groove ( Leading Seaman)
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Yes Peter, It's an Aerokits model - I still have the original intructions - distributor was KeilKraft. Scale drawing says 3/4" to 1'. Original boat was 46ft. I think that must be 1/16 scale? Model is 34 and a bit inches long
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Back in the Groove ( Leading Seaman)
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Thanks Graham93, I saw your pictures๐ - How did you decide what size motor to use? I do intend to fit the missing stringers. I can't remember why they weren't fitted - it's a good while ago now ๐
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Back in the Groove ( Leading Seaman)
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Thank you. I've started to look at other blogs, to help me decide how far to go with this one. I'm hoping to do the refurb over the winter, and install the new motor/servo and electronics, then remove, so I can do a better job on the inside, before doing the repair and repaint
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Remove Ads ๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Rookysailor ( Commodore)
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Looks like it could be an old Aerokits Fireboat, depends on the size of the boat, what size motor to put in, the one you saw at Southport, with a 850 brushed motor, would probably be a 1/12 scale, but
you can also ket the smaller 1/16 scale.๐ Cheers, Peter ▲
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Graham93 ( Vice Admiral)
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Hi,
Welcome on board. Iโ Currently refurbishing a 34โ Crash Tender that I built about the same time as yours. I have fitted mine with a Turnigy brushless D3536/6 1250kV motor running on a 3S LiPo battery and performance is great. You will need to fit the missing stringers though Graham93 ▲
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง mturpin013 ( Admiral)
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welcome to the site
there have been some recent crash tender builds in the blogs section. One is mine (not yet complete) and Robs which is on the water, I think you'll find all you need on this site. The Vosper 46โ RAF Crash Tender Kit By Vintage Model Works by mturpin013 ๐ฌ๐ง ( Lieutenant) and Vintage Model Works 46" RAF Crash Tender by robbob ๐ฌ๐ง ( Captain) PS there are many others of the 36" version ▲
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๐ฌ Re: 34" Vosper RAF Crash Rescue Tender - Aerokits model
5 years ago by ๐ฌ๐ง Martin555 ( Fleet Admiral)
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Hi,
You have a lot of work ahead of you but it will be nice to see the old boat have a new life. Good luck. Martin555. ▲
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๐ฌ Re: Float Test!
5 years ago by ๐ฌ๐ง Martin555 ( Fleet Admiral)
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Hi,
I like that old servo system, using that system slightly modified you could control all sorts of things. Martin555. ▲
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Julio
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