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    Motors
    Don't know what happened MOTOR COMPARISON Model Number Caldercraft CEM 900T MFA
    torpedo 850
    Nominal Voltage 12v 12v Operating Range 6-24v 12v Type Brushed Brushed Current Cons No Load 0.4A 1.9A Current Consumption Max Eff 5A 10,8A Stall Current 20.3A 40A RPM at Nominal Voltage 3000r/min 9778r/min Prop Caldercraft 75mm The Motor I am putting in this Sea Queen is a
    torpedo 850
    . This is due to the Caldercraft motor only manages just above walking pace.
    1 year ago by Ianh
    Blog
    Aerokits/Jotika Sea Queen
    Hi This is being built from the Jotika Sea Queen Kit. The kit is quite comprehensive but I need to check the fittings supplied as some of the look a bit small for a 1:12 Boat. Also decided to change the Motor from the existing Caldercraft to an MFA
    torpedo 850
    as I believe the Caldercraft Motor only manages walking pace. First thing was to built a building board. I need this to also cope with a VMW 46" RAF Crash Tender.
    1 year ago by Ianh
    Forum
    Aero Kit - Sea Queen
    Hi Andy, i have the Huntsman with a
    torpedo 850
    which gives it a realistic speed,cuts through the water nicely.. good luck with the build
    2 years ago by DennisRobotham
    Response
    Fittings and finishing
    PS: You may be risking overloading the Viper Marine 10 with the
    torpedo 850
    !😲 See attached spec. Note: "It has a 10Amp motor limit ..." I think you would be better off with the Marine 15 considering the T850 max continuous at 13 A. I only use my Viper 10s for small (almost Plastic Magic) boats and motors. Just a thought, it's up to you but don't be surprised if it smokes at full throttle 😑 Cheers Doug 😎
    2 years ago by RNinMunich
    Response
    Fittings and finishing
    Hi, just noticed your Harbour Post wherein you write "Direct Drive to a MFA
    torpedo 850
    (2 Blade X Type) Powered by LiPoly (11.1v) 8Amp/h Batteries Controlled Through Viper MARINE (10Amps) ESC" Don't forget to fit a 10 or 15Amp fuse between ESC and motor! Stall current is 40A !!! See pic for
    torpedo 850
    specs. Oh! And don't forget to take a 'supervising adult' with you on each sailingπŸ˜‰ Have fun, Doug 😎
    2 years ago by RNinMunich
    Blog
    Fittings and finishing
    Have been making steady progress on the Huntsman. Few additional fitting I acquired and me mom has been busy knitting boat fenders front and for the sides. Amazing she can almost knit one as faster than I can chamfer a cork in the lathe to fill it with. (pictures attached). I'm not sure the masking tape she attached them will cope with the speed and the wet. I guess I need to secure then with some brass cleats or posts. My next Job. Also attached the windscreen not as much trouble as I thought. Radio is in and the
    torpedo 850
    motor installed.
    2 years ago by Novagsi0
    Response
    Fairey Huntsman
    Very nice I'm also building one, what motor did you install to get that turn of speed. I'm hoping you will say
    torpedo 850
    that is what I have just bought for mine.
    2 years ago by Novagsi0
    Forum
    RAF fIRE TENDER MAST DETAILS ??
    Yes upgraded the motor to a
    torpedo 850
    12 blots on an electronize 15 amp esc. Goes quite well
    2 years ago by none
    Forum
    MFA
    torpedo 850
    motor
    Nobody's perfect. πŸ˜‰ "If you never made a mistake - you never made anything!!" 😎
    3 years ago by RNinMunich
    Forum
    MFA
    torpedo 850
    motor
    Well yet another question I have. What would be the best ESC for this make of Motor MFA
    torpedo 850
    motor at a Reasonable price Please...
    3 years ago by none
    Forum
    MFA
    torpedo 850
    motor
    Silly MeπŸ˜‹
    3 years ago by camyaj
    Forum
    MFA
    torpedo 850
    motor
    Sorry, but nonsense. They weigh approx. 600gm. ~ 17oz. 😎
    3 years ago by RNinMunich
    Forum
    MFA
    torpedo 850
    motor
    Don't forget these motors weigh just under 2Lb each
    3 years ago by camyaj
    Forum
    MFA
    torpedo 850
    motor
    Many many thanks for the info.. Just what I was looking for.
    3 years ago by none
    Forum
    MFA
    torpedo 850
    motor
    Hi, M5 screws, 32 mm apart. Motor should come with mounting and screws anyway! Doug 😎 Data sheet πŸ˜‰ http://www.produktinfo.conrad.com/datenblaetter/200000-224999/222377-da-01-en-E_Motor_Torpedo_850.pdf
    3 years ago by RNinMunich
    Forum
    MFA
    torpedo 850
    motor
    What size are the motor mounting screws ? to fit the 850 to the motor bracket. I have not got mine yet so have nothing to try the hole sizes with yet.. In fact I don,t have any engine mounts yet thought I may be able to make some
    3 years ago by none
    Forum
    Possible Motors for Large Scale Tug
    Hi raginghalfasian OK, I don't know how I missed this anyway. I source everything from Cornwall Model Boats. you might want to look here! MFA
    torpedo 850
    Powerpack ESC it's worth a look. Oh, I just wanted to let you know your in for a treat when it comes to the ballast of Mr. Darby. Her Ballast is about 90 Lbs. So hope you have a strong back!
    3 years ago by figtree7nts
    Forum
    MFA
    torpedo 850
    motor
    Which part of I run 3 MFA x 850's on these don't you understand😊
    3 years ago by camyaj
    Forum
    MFA
    torpedo 850
    motor
    Whatever turns you on - and runs your boat! πŸ˜‰ Happy sailing 😎
    3 years ago by RNinMunich
    Forum
    MFA
    torpedo 850
    motor
    At long last I got there. These say they are For 540 dual motor or single motor So for an 850 torpedo it is a no go.. I think I will have to stick with these from http://electronize.net/model_electronics_frames.htm
    3 years ago by none
    Forum
    MFA
    torpedo 850
    motor
    Correct, they're a bugger to get at sometimes though! 😊😎 Cheers Doug
    3 years ago by RNinMunich
    Forum
    MFA
    torpedo 850
    motor
    Are you highlighting the link and then right clicvking and getting google to find it as it seems on this site you just cant click on it like you should be able to Munich you might also salvage the Disc drive motors they should be small Brushless ones
    3 years ago by camyaj
    Forum
    MFA
    torpedo 850
    motor
    Wierd! OK, try it this way start at http://www.ebay.co.uk Then enter New 320A 7.2V-16V Brushed E#8 Speed Controller with Fan in the search box. You should then get a choice of these ESCs. Good luck 😎
    3 years ago by RNinMunich
    Forum
    MFA
    torpedo 850
    motor
    http://www.ebay.co.uk/itm/1224 89724489?ul_noapp=true Will not work for me though
    3 years ago by none
    Forum
    MFA
    torpedo 850
    motor
    Odd! Worked OK for me! 😎 Tip, if you want / need to add a fan to an ESC or whatever πŸ˜‰ I've started collecting the mini 6V fans from old PC cards, graphics cards in particular.
    3 years ago by RNinMunich
    Forum
    MFA
    torpedo 850
    motor
    I can not seem to get camyaj,S ebay link to work.
    3 years ago by none
    Forum
    MFA
    torpedo 850
    motor
    Hi camyaj I have used similar and they do work well and I agree they can handle high currents. I do have one reservation as the web link show Tamiya connectors to the battery and I believe these are rated at 15 amp when new. The Tamiya site has a discussion on connectors https://www.tamiyaclub.com/forum/index.php?/topic/56075-tamiya-connectors/ I replaced my connectors with Deans and have had no problems. Dave
    3 years ago by Dave M
    Forum
    MFA
    torpedo 850
    motor
    I use these http://www.ebay.co.uk/itm/122489724489?ul_noapp=true in my S-Boot and PT boat both driving 3x motors ie MFA 850's and Graupner 600's those Blue or pink ones I had trouble with as with Not electronize but the other ones.They are car ones and you could probably get similar ones in the UK . They may be chinese amps but they handle 40amps plus no bother
    3 years ago by camyaj
    Forum
    MFA
    torpedo 850
    motor
    They are a reasonable cost. I have seen a few so overpriced There not for the average modeler. So I was hoping I would not get any recommendations for esc,s that were Β£100.00 plus to start with..
    3 years ago by none
    Forum
    MFA
    torpedo 850
    motor
    I have used Electronize ESC driving MFa 850's in my 54 inch Arun for 5 years with no problems and am putting the same system in my Tyne. As to cost, what is reasonable?
    3 years ago by Threelegs
    Forum
    MFA
    torpedo 850
    motor
    Hi Dave , crossed lines not crossed swords, no worries mate. Mark
    3 years ago by jarvo
    Forum
    MFA
    torpedo 850
    motor
    Hi Mark I was refering to the Blue as shown in the link posted by Sonar, I should have made it clearer that Electronize are brilliant and I have never seen or heard of any problems. Dave
    3 years ago by Dave M
    Forum
    MFA
    torpedo 850
    motor
    I prefer blue cheese, preferably Stilton or Bavaria Blue πŸ˜‰ and yes smoking is a nasty habit - Now where's my damn lighter ...... Good night all 😎
    3 years ago by RNinMunich
    Forum
    MFA
    torpedo 850
    motor
    Hi Dave M, the Electronize ESC's i was refering to are good for 24volts and i think 30 amps, the other reference was to the blue chinese esc's that had a nasty habit of smoking Mark
    3 years ago by jarvo
    Forum
    MFA
    torpedo 850
    motor
    I do a lot of stopping but smoking no more been just over 3 weeks. Hence I have a little more to spend on my hobbies
    3 years ago by none
    Forum
    MFA
    torpedo 850
    motor
    I do a lot of stopping & smoking myself, it's very costlyπŸ‘
    3 years ago by Midlife306
    Forum
    MFA
    torpedo 850
    motor
    I do believe the link is to ESCs similar to those Mark (jarvo) referred. I have a box here with about six that have been pulled from club member's models. They all appear to work (in a fashion) but exhibit a range of problems in the model from erratic running, stopping to smoking. Personally I would not use with any motor drawing more than 10 amps. Most of mine were used in fast models with big motors and seem to have lost the designed control spread resulting in little control from stop to full. It could be there was a bad batch and Mark, I and my fellow club members all bought from the same sources as we all live in the NW. The very max volt is 12 so it could be a fully charged SLA caused the problem Dave
    3 years ago by Dave M
    Forum
    MFA
    torpedo 850
    motor
    The most funny thing is I have ordered two of them a week ago and there awaiting a new delivery of circuit boards I have ordered the FR30HX Esc,s They should be o.k for the Bosch motors I have . But So far as the
    torpedo 850
    motors as yet I have nothing and that includes the hull... But I will make something soon... I was also considering these. http://www.pegasusmodels.co.uk/product.asp?type=mainmenu&maingp=Electronic+Speed+Controllers&prodid=998327#.WRQ30qKT9_l
    3 years ago by none
    Forum
    MFA
    torpedo 850
    motor
    Hi Sonar, if you are running 2 motors, make sure you have good capacity in hand, these are powerful motors and need a good ESC to handle them, i used one with a chinese "50amp" esc and it produced magic smoke within a few minutes, changed to an Electronize and its run for 2 years now Mark
    3 years ago by jarvo
    Forum
    MFA
    torpedo 850
    motor
    Just read something very similar to that myself. Many thanks
    3 years ago by none
    Forum
    MFA
    torpedo 850
    motor
    I was told any brushed esc over 25amps by the guy from SH Grainger. Well, that's what he sold me to pair with the 850's he sold me at the international Model Boat Show at Warwick last year. I decided to go brushless after that, so, motors and esc's are sat in a box in the garage, so I don't have any practical knowledge, sorry. Just what I was told. Best wishes, Dave W
    3 years ago by rolfman2000
    Forum
    raf crash tender
    Hi Paul it is a single screw not to bothered about budget to be honest was going to use a electronics 15 amp speed controller and a planet 6 radio gear buts that's as far as I got i have ordered a mfa
    torpedo 850
    motor for it but can change if it's not right I am sure I will use it in another project 😁 thanks for your help
    3 years ago by georgeo5664
    Media
    Unknown
    I recently acquired this lovely boat off eBay,...she cleaned up nicely, and runs quite beautifully since I re engined with a
    torpedo 850
    , on 14 volts. Now, I would love to know is this is a one off, or a kit? The build quality and layout would suggest a kit, but what do I know? I'm sure the massed wisdom on this site can provide me with a clue... Overall length; almost 50" Any ideas? Brian.
    3 years ago by misterbee
    Forum
    Precedent Huntsman 461/2 Inch
    HI Folk, As I have started painting boat I thought that maybe this would be a good time to get my head around fitting all the R/C and motor parts and where to fit them. The parts are 1 MFA
    torpedo 850
    motor, 1 Futaba S3003, marine brushed ESC-50, 1 rudder, push rods, and 1 very heavy L/A Battery. This is my first entry to R/C so I need to know how each part relates to the others. Obviously common sense tells me about some procedure like position of rudder and motor as they are shown on the plans. The rest I am unsure about. Regards Glyn
    5 years ago by restin
    Forum
    Precedent Huntsman 461/2 Inch
    HI Mark, Thanks for that info, I have been off the scene for long enough to lose touch with things. My Huntsman is all timber 46 inch and is looking good now. Looking forward to the next part of the build. I have all the running gear. it will be powered by a
    torpedo 850
    , R/C is new to me so I will have my work cut out to set it all up. Thanks for your very kind help Mark. Regards Glyn
    5 years ago by restin
    Response
    Fairey Huntsman 31
    Hi Have bought a part completed Precedent 46" Fairey Huntsman. it has the
    torpedo 850
    motor and was fitted with a MFA como belt drive, which I have removed to have direct drive. The prop is a 2 blade 60mm dia, I wonder is this will be too much? I like your ideas on decking and windows etc...most helpful ,thankyou Does your Huntsman go well?
    5 years ago by frankburgess
    Media
    MFA Spearfish
    This was a very beat up and plain model when I bought it , but has cleaned up well . Original Power was from a
    torpedo 850
    and heavy 12v 7Ah lead acid battery giving run times of around 20 minutes of plod along performance . Now however Boat is powered by Thumper motor and 4 cell Lipo's giving over an hour of entertainment . Cut's a fairly mean wake too . Needham lake in Suffolk is it's home surf πŸ‘
    5 years ago by CraigRobotham
    Directory
    (Naval Ship) MFA Tracker
    This boat ran well on 2
    torpedo 850
    s but not for long before draining battery plus all original gear was very old , This almost cost me the model due to fire aboard her . This is what made me decide to strip it all out and start fresh with modern parts and materials , Specs to follow (Motor: Thumper) (ESC: Hobbywing) (10/10)
    5 years ago by CraigRobotham
    Directory
    (Pleasure Craft) MFA Spearfish
    Originally fitted with
    torpedo 850
    and on lead acid battery this boat handled like a lead brick , which was a waste of such a lovely hull , now it can motor along nicely and turns quickly and very stable . Plus run times are very good . Just needs lights fitting (Motor: Thumper ) (ESC: Turnigy) (9/10)
    5 years ago by CraigRobotham
    Blog
    Fairey Huntsman 31
    I built and fitted the top structure and drilled through for the propshaft and rudder. Fitted the prop sleeve and spray painted the hull and structure (see pic), I did it in maroon and white coz I couldn't paint it blue being a Man U fan, although my rugby team, Barrow Raiders, (and that's an oxymoron after last season!) do play in blue! Next I sprayed the window frames aluminium and fitted them with the plastic panes using Formula '560' Canopy glue which dries clear, along with the hatches and air vents. I also fitted all the RC Equip, motor, prop & shaft, servo etc. after giving the interior 2 coats of z-poxy finishing resin to waterproof it. I'm using a 12v lead battery, 50mm prop and MFA
    torpedo 850
    Marine Electric Motor. I tried it in the bath for trim and it sits just grand!
    5 years ago by padlad


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