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>> Home > Videos
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Showing page 26 of 41   |   Jump to page: 1   2   3   4   5   6   7   8   9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30   31   32   33   34   35   36   37   38   39   40   41  


British Coast - Posted: 4 years ago by steve-fb40
mdlbt.com/18417   >> Permalink
First time in the water and under power. to get the correct trim (ect) I built a test tank from ply and lined it with polythene. To stat with There were two 12V lead acid batteries and the weight of the two motors, she just simply sat there, even the props were above water. After approx 30lbs more weight the correct water line was reached, the white line on the hull follows the sheer line of the main deck and isn't the true water line. So with the two batteries hooked up in parallel, the 12V Proboat Speed controller and the two Duma 12V motors as can be seen quite a good performance.
Response by figtree7nts on the 3 years ago
Great looking ship model!
Response by jarvo on the 3 years ago
Lovely looking model, sails well but I think you are going to need more ballast, prop is still partly out of the water.
Response by figtree7nts on the 3 years ago
Great observation Mark!

49 Inch Perkasa fixed after burnout - Posted: 4 years ago by lesfac
mdlbt.com/17777   >> Permalink
Following burning out the motor by fouling the prop on a polythene bread wrapper I fitted a new 160 amp speed controller and got a bargain motor from Giant Shark. It Is an Emax GT4020 which cost about £14. I realised what a bargain It was and went back only to find Giant Shark have ceased trading. The video shows the boat running on a 4 cell Lipo, It goes a bit quicker on a 5 cell that I have. I am really sold on Lipo power as Dave said I would be. I have just ordered a 3 cell Lipo for my crash tender
Response by Dave M on the 4 years ago
Really looks the part. Sad about Giant Shark.
Response by Northumbrian on the 4 years ago
it was giant cod before the VAT man caught him
Response by figtree7nts on the 3 years ago
She looks very nice, especially going through the gail force winds! 👍

Lorraine B - Posted: 4 years ago by tommy3917
mdlbt.com/17707   >> Permalink
Lorraine B @ QE2 Park Ashington
Response by Northumbrian on the 3 years ago
So it was not u who caught the fishermans line 😁
Response by tommy3917 on the 3 years ago
That as well 😡
Response by figtree7nts on the 3 years ago
Nice job on the working radar!

Molly - Posted: 4 years ago by tommy3917
mdlbt.com/17701   >> Permalink
Molly at normal speed In focus sharper but shaky
Response by Northumbrian on the 3 years ago
speak for yourself Tommy, Give me a shout next time you are going to the lake
cu soon scrubber
Response by figtree7nts on the 3 years ago
I wish there would have been a little man controlling the tiller!
Response by KenThompson on the 2 years ago
Yep, I think she needs someone on the tiller.
Lovely model though.

MOLLY - Posted: 4 years ago by tommy3917
mdlbt.com/17587   >> Permalink
Molly Northumbrian Coble at QE2 Park Ashington
Response by Northumbrian on the 4 years ago
By far the best Coble on the lake but you still have to scrub them decks

Drunken sailor - Posted: 4 years ago by Northumbrian
mdlbt.com/17448   >> Permalink
This Is a tribute to Tommy for all his help sourcing materials
but you still have to swab them decks lad
Response by tommy3917 on the 4 years ago
One word Poundland
Response by Northumbrian on the 4 years ago
how much?
Response by onetenor on the 3 years ago
Put him in the scuppers with a hosepipe on him was the original wording as opposed to put him in a barrel

Spook - Posted: 4 years ago by Northumbrian
mdlbt.com/17447   >> Permalink
PJ Wiles Oscar aka Spook with her top suit on struggling to cope In a high wind on the Q2 lake Ashington
Response by figtree7nts on the 3 years ago
Talk about ruff seas!!!
Response by jarvo on the 3 years ago
Is that what they call pitch poleing

M.F.A Tracker - Posted: 4 years ago by CraigRobotham
mdlbt.com/17408   >> Permalink
This Is my M.F.A Tracker . When originally purchased It had the large and heavy 850 motors In It and old electronics , after a close call with a fire on board I decided to refit her out with modern Brushless motors and over rated Escs powered by Lipo's . Works out a 1/3 rd the weight 3 times the speed and run time over an hour . So a great result

Oh yes , sound effects donated by nearby Tug 😊
Response by CraigRobotham on the 4 years ago
Cheers Dave , yes I have converted all my boats and my sons to brushless with lipos now . just so much better :-)
Response by DennisRobotham on the 3 years ago
nice one son,the Tracker and Vietnam boats look and perform great.....well done.
Response by CraigRobotham on the 3 years ago
Cheers Father , hope to get a film of Nam boat on soon 😀

VOSPER PERKASA 49 INCH KIT PART 2 - Posted: 4 years ago by lesfac
mdlbt.com/17250   >> Permalink
This video follows on from my earlier post. I changed to running on a 5 cell lipo (18.5 volts) and I am very pleased with the Improvement over 14.4 volts Nicads. (Edit sorry Nimh`s) I put this link Into my reply on my previous post but It didnt work as a hotlink so I am posting this.
The boat Isnt quite flat out here due to the difficulty videoing and steering.
Les
Response by lesfac on the 4 years ago
Well Sods Law Rules. Took It to Cwmbran boating lake for Its 3rd sail on Sunday and It picked up a polythene bread wrapper around the prop which had the effect of causing the prop nut to tighten on the prop tube clamping the prop shaft and I fried the esc. I have ordered another esc and I am hoping the motor Is ok.
A big thankyou to Cwmbrans duck feeders
Response by Dave M on the 4 years ago
HI Les
What a bummer. Bread Is not good for wildlife and certainly not for props.
Hopefully your motor should be OK as long as the wires are not burnt. If you have a multimeter you could check the Insulation between the shaft and each winding using the highest ohms reading. It should be high, If low chances are there Is an Internal short. A quick check (on a lower ohm reading) between windings should give similar results between every pair, again any variance may Indicate an Internal short.
Dave
Response by andy_mart on the 3 years ago
I am just building one of these on a wood hull, I notice you are running a single motor. Could you advise what motor you are using plus what prop please? Thanks Andy

VOSPER PERKASA 49 INCH KIT - Posted: 4 years ago by lesfac
mdlbt.com/16924   >> Permalink
This was a precedent 49 Inch kit that I made during last year. I wasn't at all Impressed with the kit. The precut plywood parts were cut with knife blade tools and the tools were obviously past their sell by date. The shapes were very poor. If I make another kit I will make a point of looking for a laser cut hit.
Having said that I am pleased with the outcome.
Response by Dave M on the 4 years ago
HI Les
Good to hear you have the LiPo working.
You need to set your ESC to recognise the LiPo. When correctly set you should hear a series of beeps Including a sequence that Indicates the number of cells In your LiPo pack.
I am assuming you have a fwd only ESC so the throttle stick needs to be pulled right down and the trimmer set to neutral when you switch on. Some ESCs require the Tx throttle setting set to nor or rev and refuse to set up correctly with the wrong setting. Unlike brushed you cannot always use the Tx to correct a wrong running prop. Its easy to correct by just swapping any two of the three wires to the motor.
As the ESC shut down at 3.3v I suspect you have It configured for LiPo use as this Is the common default setting. The buzzer may not be loud enough to hear from a distance or was slower to recognize the low volt, you could try setting to a higher volt to give advance warning. At least your Esc allowed you to return to shore.
Not looked at the video yet but am sure you will want to continue with LiPos.
Cheers
Dave
Response by lesfac on the 4 years ago
The bit I can't understand Is that I was running the boat on 14.4 volts. I did nothing yet It cut out on the lipo at 3.3 volts per cell which would equate to 16.5 volts. If It had been programmed to do this It wouldn't have worked at 14.4 volts. Its as If It had auto programmed Itself.
Response by Dave M on the 4 years ago
HI Les
There are default settings In most ESCs and they change when you select a different type of battery. If you selected LiPo It recognised 5 cells and auto set a 3.3 v cut off. My latest LiPo 5000 suggests a cut of voltage of 3.4 volts so I suggest you look on the battery cover to see the recommendation. The higher power batteries are very low Internal resistance and I believe this Is why they suggest a higher cut off.
So yes your observation Is correct


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