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π 46"Wooden RAF Crash Tender
4 years ago by
π¬π§ MaggieM (
Leading Seaman)
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Hi Paul , Thanks , I will sit down and digest all the information / advice both you and Doug has given me ~ plenty of ideas and solutions ~ sadly as I have mentioned previously , it is looking very doubtful our Club will meet this season so will not be able to report back with the success ~ the only alternative to running at our club pond will be the Blue Water Club as they meet 24/7 ( obviously not in our current lock down situation )
Many thanks and any one reading this blog 'keep safe'π€
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π 46"Wooden RAF Crash Tender
4 years ago by
π¬π§ MaggieM (
Leading Seaman)
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Hi Guys , thanks , you have certainly given me a steer ( apologies for the pun ) to use a selection of the Leopard motors , looks like the 1100KV outrunner is the one I should start with ~ can I use the 120amp esc I have and if so do I need to use 10 gauge wire to the battery or can I use 12/14 gauge wire
Again , many thanks for all the advice you have given me , it certainly seems I do not need to use the motor I have already bought as this is not suitable for my use ~ only problem is, the motors suggested are rated 3S to 5S , if I use a 4S or 5S power pack , just a small logistical issue of powering the 12v sound units / pump
Regards Ray
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π 46"Wooden RAF Crash Tender
4 years ago by
π¬π§ MaggieM (
Leading Seaman)
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Hi Paul and Doug ,
You are stars , you have both been very informative and explained the KVβs , torque and other specs of brushless motors which means for the first time I am starting to understand the properties / performance of a brushless motor . Unfortunately with the exception of our old Chairman ( who just buys a motor and hopes it works ) I am the only member of DMBC that runs brushless and therefore I have no one else to talk to to get advice . When I purchased the Model Slipway Tamar Life Boat I was told to contact Westbourne Models as they knew exactly what motors / props to use ~ and she runs perfectly , 2 x Thumper and 2 x 60 Amp fusion Escβs neither water cooled on 3S Lipos .
When I race cars all I need to decide on is the Turns of the motor ( as all car motors are 540 size ) and the gearing ~ pinion and spur gear . I race with 120 Amp ESCβs
The model numbers are as follows :
LC3536 -7T 1100KV Outrunner Brushless Motor Leopard Hobby
LC3536-14T 560KV Outrunner Brushless Motor Leopard Hobby
LC356-8T 960KV Outrunner Brushless Motor Leopard Hobby
LC3536-5T 1520KV Outrunner Brushless Motor Leopard Hobby
LC4250-9T 480KV Outrunner Brushless Motor Leopard Hobby
LC4250-9T 550KV Outrunner Brushless Motor Leopard Hobby
LC4250-5T 960KV Outrunner Brushless Motor Leopard Hobby
LC5055-9T 430KV Outrunner Brushless Motor Leopard Hobby
LC5055-6T 650KV Outrunner Brushless Motor Leopard Hobby
LBH3650-9T 4370KV Inrunner Brushless Motor (2 pole) Leopard Hobby
I know that there are other companies making Brushless Motors ~ can you suggest any alternatives to the Leopard Motors
Yes the ESC is Brushless and will cope with 6S
I have already set the motor / Prop Shaft in place to take a maximum 45mm prop size
Also it will be difficult for me to experiment with any other motors that are bigger than 540 size brushed motor so model number LC5055-6T 650KV Outrunner Brushless Motor Leopard Hobby which is Dimensions (Dia. x LengthοΌΞ¦50.0mm x 55.0mm) will not fit into the motor mount ~ if I was to use this motor then I would need to adjust the motor mount and take out the prop shaft to increase the rake
Yes the sound units and pumps will operate on spare channels at 12 volts
One other concern is the size of the wiring ~ with all my other boats I use 14 gauge silicon wire with XT60 and 4mm bullet connectors . The ESC has ~ 10 gauge wire to the battery and 12 gauge to the motor ~ presumably the 10 gauge is to facilitate using 120 amps ~ if I use the types of motors you are suggesting can I down size the wire as I am not sure that my soldering skills will be good enough to solder the 10 gauge wires to the switch / XT 60 connectors ( I do have XT 90 connectors ) , which if the joints fail , it could result in a short = possibility of a fire
It seems that you are suggesting to use 6S batteries ( 2 x 3S ) ~ as I previously mentioned if I was to use 6S power I would have to re think the hardware installation
Unfortunately, no one knows when normal life will resume so we have a possibility of real possibility of waiting till next year to sail her ( we use a manmade pond which is emptied during the winter to avoid icing over which could crack the cement )
Finally once again many thanks for all the help and advice you have given me , it is much appreciated ~ keep safe
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π 46"Wooden RAF Crash Tender
4 years ago by
π¬π§ MaggieM (
Leading Seaman)
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Hi Paul ,
Thanks , I expect my Crash Tender will be slightly heavier than your Huntsman , but gives me a rough ball park .
I thought I would try and establish the specs of the combination I have already bought ~ it looks as if :
# ~ Motor is an inrunner 2200KV and 1200 Watt
# ~ The ESC Has a constant current of 120Amps and Burst Current 240Amps
The other problem is the battery as I was hoping to run on 3S Lipos ~
if I use a bigger battery I will have to rethink my installation of all electrics ~ Monitor Pump , Sound Units
Thanks again for all the help you guys are giving me
Regards Ray
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π 46"Wooden RAF Crash Tender
4 years ago by
π¬π§ MaggieM (
Leading Seaman)
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Hi Doug and βpmdevlin
Thanks for the information ~ I am really not happy to use the motor and ESC I have and wondered if you guys could give me advice on which motor I should use ~ all my boats run brushless except the bow thruster in my Tamar Life Boat .
Most of my boats are 36β long ~ GRP / Plastic ( I have a fleet of 5 Arriva Boats that are wood )so the RAF Crash Tender being longer and all wooden is naturally heavier .
The person who gave me the advice to set my boat up with the 120Amp ESC and Inrunner Motor has a much larger pond than the one I use and his boats are set up for βwarp speedβ which clearly I do not want ~ I would like to achieve a realistic speed .
I use the same motor in all my boats ~ 36βHuntsman ( GRP ) 36β Luxury Cruiser ( plastic ) all the Arriva range ( to include a Ferrari and Monaco ) and I get a good turn of speed and planning .
It seems to me that Brushless motors have 3 important specs ~ KV / Turns and Maximum Power
The motor I use is a Outrunner Leopard 8 Turn , 960 KV and Maximum Power 353 Watts
Other motors in the Leopard range are :
7Turn , 1100KV , Maximum Power 538 Watts
5 Turn , 1520KV , Maximum Power 370 Watts
9 Turn , 550KV , Maximum Power 643 Watts
5 Turn , 960KV , Maximum Power 823 Watts
9 Turn , 430KV , Maximum Power 1386 Watts
6 Turn , 650KV , Maximum Power 1411 Watts
9Turn 4370KV, Maximum Power 500 Watts ~ This is the only inrunner
I am using a single screw
If anyone can suggest the best motor for my boat from the above specs I would be most grateful
Many thanks Ray
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π 46"Wooden RAF Crash Tender
4 years ago by
π¬π§ MaggieM (
Leading Seaman)
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Hi , I have been 18months building the Vintage Models Wooden 46β RAF Crash Tender. I was not sure what motor/ ESC to use so a friend suggested a set to buy ~ I bought them from Prestwich Models . I installed the motor 12 months ago and only looked at the ESC yesterday ~ Hmm the 120 Amp ESC seems very formidable and I must admit I am not too keen to use it . I cannot remember the Kvs etc. of the motor but it is clearly matched to the ESC ( both being Water Cooled ) . I have spoken to other Members of my Club ( DMBC ) and they have told me stories of boats using such a powerful ESC , catching fire and the solder joints melting . Clearly the boat needs a powerful motor to make it βgoβ , but I was wondering if I could use a brushless inrunner/outrunner of a lower amperage ( sorry I know this is not good electronics talk ) that would not present a failure issue . If anyone could give me a steer I would very much appreciate it ~ many thanks Ray
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π 46" RAF Crash Tender
5 years ago by
π¬π§ MaggieM (
Leading Seaman)
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Hi , thanks for information / ideas πthey have been very useful ~ Ray
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π 46" RAF Crash Tender
5 years ago by
π¬π§ MaggieM (
Leading Seaman)
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Hi Rob ,
Thanks , was the mast light 360 degrees ~ The white metal fitting that comes with the kit has a molding top of mast that would indicate 360 degrees ~ any idea how I can get the lamp ~ I have seen brass lamps that are 360 degrees clear green lenses , not sure this would look right on top of mast , sorry forgot the light on the wheelhouse forward . Appreciate all the advice you give regards Ray
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π 46" RAF Crash Tender
5 years ago by
π¬π§ MaggieM (
Leading Seaman)
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Hi Rob , Hope you are well ~ construction is slow but progressive , had a thought about lights , apart from normal port / starboard navigation lights , what if any did the boat have any additional running lights and if so where were they positioned please ~ many thanks Ray
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π 46" RAF Crash Tender
5 years ago by
π¬π§ MaggieM (
Leading Seaman)
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Hi Rob , I found this information very useful , bought the boathooks and they are just right Rayπ
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π 46" RAF Crash Tender
5 years ago by
π¬π§ MaggieM (
Leading Seaman)
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Hi Elsrickle ~ these photos are very helpful , firstly on the CAD drawings that come with the kit , the cowl ventilators are shown pointing forward , however the photos show them pointing aft ~ also there is some conjecture of the colour of the superstructure , although they are black and white photos I think it clearly shows that the cabin sides and roofs are white π
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π 46" RAF Crash Tender
5 years ago by
π¬π§ MaggieM (
Leading Seaman)
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Hi Rob , thanks very much for the information regards Ray
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π 46" RAF Crash Tender
5 years ago by
π¬π§ MaggieM (
Leading Seaman)
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Hi Rob , the information has been very helpful and much appreciated
I contacted Battlefields and they have 3 x Boathooks 1/24th scale 20 mm long ~ your blog shows 2 x 25mm and 2 x 16mm ~ did you extend Battlefields hooks or will 20mm be ok
I intend putting the floor in where the motor sits ~ you show a door where the sliding hatch is , could you please let me know the dimensions you made the door and also the depth of the floor from the top of the bulkhead ~ many thanks Ray
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π 46" RAF Crash Tender
5 years ago by
π¬π§ MaggieM (
Leading Seaman)
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Hi Brianaro ~ That's interesting and I am worrying about the fittings in the kit that are not as comprehensive as other models I have built ~ sadly I have no Model Shops locally ~ regards Ray
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π 46" RAF Crash Tender
5 years ago by
π¬π§ MaggieM (
Leading Seaman)
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Hi Rob ( is it Rob ) I think we had a good chat by this boat ~ I am used to Model Slipway , Billings etc. who give you full CAD drawings good instructions and all necessary fittings ( mainly white metal ) ~ unfortunately missing with this model ~ I have just got some netting for the scramble nets ( had to buy 1 m x 4.5 m ( have enough for 50 plus models ) ~ I am not used to Boat Mayhem but I think I have all your blog ~ e.g. the boat hooks see 2 different lengths but is the dowel 3mm or 4mm . So as far as superstructure common opinion seems to be grey sides and white roofs ~ yes I purchased planking to do rear , middle and boat hook areas ~ appreciate your advice regards Ray
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π 46" RAF Crash Tender
5 years ago by
π¬π§ MaggieM (
Leading Seaman)
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Hi Robbob ~ thanks very much for advice ~ yes I know that sometimes it's the builders choice , but I try to make my models as close to the real craft I was at Warwick last year and saw a really nice model planked ~ did seem a bit odd ~ I have planked my Huntsman and looks really cool ~ I will take your advice and paint the deck grey ~ on another point I have been told that when the boat was commissioned into service all the superstructure was painted white ~ I see the majority of other models grey with white roof ~ appreciate your view many thanks
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π 46" RAF Crash Tender
5 years ago by
π¬π§ MaggieM (
Leading Seaman)
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I am building a Vintage Model Crash Tender , should the deck be planked and varnished or painted grey
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