Topic: Precedent Fairey Huntsman. (Read 62582 times)

Bradley · « **on:** November 28, 2009, 02:30:28 pm »

Here are the pics of my 46.5" Fairey Huntsman so far as I have got with it. The internal framework is more or less complete and is just laid inside the grp hull and requires adjusting somewhat and then glueing/fibreglassing in.

Derek.

Flying Sparks · « **Reply #1 on:** November 29, 2009, 07:04:46 pm »

Hi Derek

Your Huntsman is looking good, please keep posting the photo's. What are you going to power her with?

Phil.

Bradley · « **Reply #2 on:** November 29, 2009, 09:34:25 pm »

Hi Phil,
Thanks for the kind comment. At the moment I am considering powering it with twin brushless motors. I already have 2 outrunners and am waiting for 2 inrunners to be delivered to try to work out which will be best. I am also going along with advice and, eventually, props, shafts, etc., from George Sitek ( http://www.gsitek-props.co.uk ) as I have always found him very helpful. All his props are individually made and I don't think his prices can be beaten.

I will probably use rechargeable Ni-Mh battery packs as I am not too happy with Li-Po's and I don't think weight saving will be necessary.
Things might slow down a little with the Huntsman as I am trying to get on with my Cygnus GM33 but will post more photos asap.
Derek.

Flying Sparks · « **Reply #3 on:** November 30, 2009, 07:53:54 am »

Hi Derek

Nice to see your Huntsman will be electric power and brushlees to boot. Too many people seem to be scared of using brushless motors, I can't understand it as they are so very much more efficient and run a lot cooler as a result.

keep up the good work.

Phil

Martin (Admin) · « **Reply #4 on:** November 30, 2009, 08:51:22 am »

Morning Barry!

Which motors have you ordered?

Martin.

Perkasaman2 · « **Reply #5 on:** November 30, 2009, 10:27:30 am »

Hi Derek, Hmmm....... I can see from the pics your dilemna, are you going to A) pack out the somewhat 'shrunken' internal frame or B) cut down the moulding? Thats a hard choice? (is the size of the deck big enough to allow choice A?)
Sometimes you wonder if kit manufacturers ever actually intended for their products to be built? The stern of that hull looks nowhere near touching the rear of the very undersized framing.

(Thumbs up for trying brushless.)

Bradley · « **Reply #6 on:** November 30, 2009, 11:13:32 am »

Hi Perkasaman,
In actual fact, once the forward cross members are cut down to size, the framework will sit down into the hull and then the hull sides are drawn in to the framework and secured. The hull sides are fairly flexible and pull in quite easily to the framework. Believe me, the framework will fit into the hull, it is just that, in the photos, it has not yet been made to fit and is just sat there loose. The hull moulding is quite a good one and appears to have been cut quite accurately, so no trimming is needed there. The deck is massively oversize and, obviously, has to be cut down so that when finally fitted there is a 1/8" overhang all round the hull. The instructions say that the hull sides should be drawn in, held in place (with rubber bands

) and then secured with grp and resin - we shall see.

I think that this will make into quite an impressive boat but I think that Anglia Model Centre need to rethink what they are marketing. I believe that if some thought went into it and they upgraded the kit and added things like deck fittings, etc., and replaced some of the liteply framework with a stronger ply they would make it a more comprehensive, and popular kit (with an increase in price). Some of the die cutting of the ply leaves a little to be desired and I just get the impression that AMC have done no development work since acquiring the rights to the kits from SLEC many years ago, which I think is a shame.

I don't think that this is an undue criticism of AMC, just a comment on what (I think) needs to be done to make it into an excellent kit.

The brushless motors I have at present are a pair of Emax 2826/06 outrunners and a pair of Emax 3540/16 inrunners - don't know whether either of these would be suitable so I shall ask for advice from the more knowledgeable members and, as I said previously, I am relying on the advice of Geoge Sitek re props, etc.

Derek.

mook · « **Reply #7 on:** November 30, 2009, 12:16:00 pm »

I am looking for a supplier of brushless moptor esc before I make a choice of motors for my speedline 1/16 scale severn lifeboat. I woul;d love to fit brushless so where do I get the marine esc from?

Martin (Admin) · « **Reply #8 on:** November 30, 2009, 12:32:00 pm »

Quote

"....the framework will sit down into the hull and then the hull sides are drawn in to the framework and secured. The hull sides are fairly flexible and pull in quite easily to the framework."

Won't that distort the hull shape Derek?

funtimefrankie · « **Reply #9 on:** November 30, 2009, 01:07:06 pm »

As I remember, on my 34 inch version, the hull fitted quite snugly, once the frames were trimmed to fit low enough, but it was a few years ago !!

Bradley · « **Reply #10 on:** November 30, 2009, 01:20:39 pm »

In actual fact, Martin, I have tried 'squeezing' the hull in the necessary amount and it was very easy. The amount it needs to be pulled in is quite small and does not pull the hull out of shape. As I mentioned previously, the hull is quite a nice moulding and I have no complaints about it whatsoever.

So far as esc's are concerned, Mook, I am also searching. The only boat ones I have found so far are from China via eBay - http://stores.shop.ebay.co.uk/sellsincerely__W0QQ_sacatZsellsincerelyQ5fQ5fW0Q51Q51Q5farmrsQ5A1QQ_sidZ896818812?_nkw=seaking+esc&submit=Search.
I have bought a 35A one in the hope that it will be the right one. If it is then I will get another one.

Derek.

mook · « **Reply #11 on:** November 30, 2009, 02:20:55 pm »

many thanks derek

Bradley · « **Reply #12 on:** November 30, 2009, 05:33:45 pm »

Here goes to try again - just tried to post and lost it all

This is the stage I have reached today. Framework trimmed and temporarily clamped in place. You will see that the clamps have deformed the sides of the hull slightly but I am sure I can rectify this when I start to stick them together. I also find that the trimming of the hull (by the manufacturer) is not as good as I thought

and the top of the hull and the top of the framework do not quite match up but this will be reftified with filler when the deck is in place.
Has anyone any comments about the brushless motors I mentioned earlier?
Derek.

Bradley · « **Reply #13 on:** November 30, 2009, 07:17:55 pm »

Hi Mayhemmers,
Any comments on the brushless motors I mentioned earlier?

Derek.

Bradley · « **Reply #14 on:** November 30, 2009, 08:43:59 pm »

Come on, guys, I thought we had some brushless experts on this forum

.

HS93 (RIP) · « **Reply #15 on:** November 30, 2009, 09:36:00 pm »

dont know much about that particular motor but you may need biger speed controlers like the 80amp version rember you need a biger speed controler in water than air to be safe also do you know the KVA of the motor most motor suppliers quote it but I cannot find it for this motor. if its low ish it will be a great motor I would have thought.

Peter

http://cgi.ebay.co.uk/Emax-Brushless-Outrunner-2826-06-+-Emax-60A-ESC-x1set*_W0QQitemZ120462340555QQcmdZViewItemQQimsxq20091124?IMSfp=TL091124011004r11494

you will have to copy and paste

Bradley · « **Reply #16 on:** November 30, 2009, 10:12:04 pm »

Many thanks for the link, Peter. I have had a look at it and, from the information given, two of them would be powerful enough to get the Huntsman on the plane as it quotes them as being the equivalent of a .40 2stroke or a .60 4stroke. I will try to mount them so that if I need to go bigger then a change would not be too difficult. At the present time I am awaiting delivery of a marine ESC to give them a try. I have run them with an aircraft ESC but the programming (with music and morse code) was ridiculous and in the end I just gave up.

Derek.

HS93 (RIP) · « **Reply #17 on:** November 30, 2009, 10:15:16 pm »

A lot of them have a program card that is very cheap makes it easy to do with one.

Peter

http://www.hobbywing.com/english/Product.asp?BigClassName=Accessories&SmallClassName=Program%20Card%20for%20BL%20ESC

may not do boats though ill look on offshore elec

Bradley · « **Reply #18 on:** November 30, 2009, 10:20:21 pm »

Thanks again, Peter. I have ordered a programme card with the ESC. Having found out what a stupid arrangement it was to programme the aircraft ESC I don't think I would buy another one without a card (or already having one).
Derek.

Perkasaman2 · « **Reply #19 on:** November 30, 2009, 11:48:08 pm »

Hi Derek, Remember to take every precaution when you cut down/profile the grp hull - face mask/gloves/arms covered - glass spelks and dust are a horrendous irritant/nuisance - I now set up a (noisy)wet/dry vac nozzle close by worksite to try and eliminate problem - it's nasty stuff -I'm scratching just thinking about it.
I put masking tape along the hull edge first and marked up this with a biro/fibre tip (pencil rubs off).
Biggest clanger of all was ( should have been my first job) I forgot to make an boat cradle to support/maintain the wobbly hull's level/symmetry while marking up/glassing in hull/frames and finally bonding deck and ended up building a twisted/corkscrewed hull - that boat always needs an offset rudder - ruined - impossible to repair/correct. I'm sure you already realise these wrinkles but I certainly did'nt. This unfinished decked Higgins Pt boat hull is a testbed for my ideas and a reminder

I'm sure modellers would pay extra for an improved kit of this very

popular boat.
(A lot of these non boat brushless esc's don't reverse) This is a great thread.

jabba · « **Reply #20 on:** December 01, 2009, 09:33:07 am »

hi there derek i used one of these in my huntsman,35 inch hull.

http://www.giantcod.co.uk/hobbywing-seaking-reverse-program-brushless-p-403647.html

http://www.giantcod.co.uk/ezrun-3300kv-bushless-motor-p-403300.html

i ran it on 2s lipo,i used watercooled coil on motor,

the esc comes with watercooling

how fast you want the huntsman to go ?

to work out the rpm of a brushless motor,i.e. 980kv = 980 rpm per volt u put through it.

i used 3300kv brushless motor which i put 8.4v through it,so 8 x 3300kv/rpm = plenty of fun

i also used this setup in a 39 inch perkasa,

hope this helps

jabba

Bradley · « **Reply #21 on:** December 01, 2009, 10:03:13 am »

Many thanks Perkasaman and Jabba.

Fortunately I do not have to cut or sand any of the grp. The problem is that the sheer line of the hull has been cut very slightly too deep so that, towards the centre of the hull it is lower than the top line of the framework by about 3/16" (hope that makes sense

). So what I will have to do is a little bit of filling (NOT filing) after the framework is stuck in place which I did not want to do as the gelcoat finish is excellent but I suppose a painted trim in a contrasting colour will hide the filler.

I may be wrong, Perkasaman, but I thought that all brushless motors were reversible. It just appears that the market is flooded with aircraft ESC's (forward only

). There are some car ESC's which have F-N-R and some boat ESC's are now appearing on the market. I get the impression that one Chinese manufacturer of boat ESC's withdrew the higher powered ones from the market, I believe because they had a fault, and it looks like the replacements are just beginning to appear.

Thanks for the Giantcod links, Jabba. I was already aware of these but am awaiting a delivery of a purchase via eBay at the moment. I think that the brushless motors I already have will be powerful enough as a pair to get the boat up on the plane and running at a realistic (and satisfying) speed.

Once again guys, many thanks.

Derek.

Bradley · « **Reply #22 on:** December 01, 2009, 05:32:39 pm »

Many thanks, Perkasaman, for the tip about the cradle. I had not bothered up to that stage and just plodded on with the hull and framework. Thinking better of it, I made a cradle this morning and the hull sits into it perfectly without any twist whatsoever

. The cradle was easy - all straight lines

.

Derek.

Flying Sparks · « **Reply #23 on:** December 13, 2009, 07:38:47 pm »

How's your Huntsman coming along Derek? Have you decided on a motor yet?

Christmas came early for me today. A club member gave me a Precedent 34 wood Huntsman

(thank's Fred) Boy was I pleased, for may years I've wanted to build one of these and for one reason or another not got around to it. And to be given a Huntsman. The boat needs some tidying up, I don't think it has even been run before but spent a lot of time waiting for some TLC.

So I'm now searching through all the Huntsman threads getting all the information I can.

Phil.

Bradley · « **Reply #24 on:** December 14, 2009, 05:05:41 pm »

Hi Phil,
Thanks for your interest in my Huntsman. I'm afraid that things have come to a halt at the moment as SWMBO (or SWTSMBO - she who 'thinks', etc. etc.) has decided that she needs her kitchen for our family and friends over the forthcoming Christmas period

and the workshop (shed) is in full use for the Cygnus fishing boats

.
The motors that I have at the moment are (1) a pair of Emax 2826/06 outrunners and (2) a pair of Emax 3540/16 inrunners, but I have not decided which ones to use. The one advantage is that they both use exactly the same mounting so would be easy to switch over.
The building instructions for the boat show the motor/engine mountings too far forward for my liking and I am waiting for a prop and a length of shaft from Sitek so that I can work out a more suitable position. Obviously, on the full size Huntsman the twin diesels were mounted under the cockpit floor but it depends on the angle of the shaft as to whether I will mount the electric motors in this position.
Let me know how your refurbishment goes and post some photos - we all like piccies

Derek.

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Author Topic: Precedent Fairey Huntsman. (Read 62582 times)

Bradley

Flying Sparks

Bradley

Flying Sparks

Bradley

mook

Bradley

mook

Bradley

Bradley

Bradley

Bradley

Bradley

jabba

Bradley

Bradley

Flying Sparks

Bradley