Prototype build of ELLIE

[lnvisiblemanParticipant @lnvisibleman]

Bob

It is entirely your choice which way to go with your BEC.

However, should you have any problems, I do have a 5 ltr can of smoke in my shed, just in case all yours leaks out.

Mike

[ashley needhamParticipant @ashleyneedham69188]

Bob. You need to take the whole lot to someone who knows what they are doing with brushless motors, not describe on the phone, or take snaps….take the whole lot.

You are having such difficulty that there has to be something seriously wrong with your setup, and it needs a fresh pair of eyes. I have never heard of such diffs before!!

Ashley

Edited By ashley needham on 31/05/2014 12:13:00

[Bob Abell 2Participant @bobabell2]

Thank you Ashley

I'll convert Brutus at least and get it sailing for Paul's sake

Only got two weeks to the Lyme Park show

Perhaphs I'll take SloMo to Haydock where the suppliers will be in attendance?

Bob

[ashley needhamParticipant @ashleyneedham69188]

Bob. Haydock, excellent idea!! Ashley

[Colin BishopModerator @colinbishop34627]

Bob,

I am assuming you have read John Parker's article on Brushless Motors: **LINK**

Colin

[Bob Abell 2Participant @bobabell2]

Thank you, Colin

Had a quick look, but didn't spot any mention of twin motors and that is the crux of the matter

Still going back to old technology!

Bob

[Colin BishopModerator @colinbishop34627]

Have another look Bob, it mentions twin motor setups and cutting the BEC! That's why I suggested you might like to read it.

Colin

[Bob Abell 2Participant @bobabell2]

Shop floor to Drawing Office

Got a cunning plan, my Lord!

Going to fit a Brushless motor in Ellie!………..What a super idea?

Like the idea, Paul?………It will make an interesting experiment, to see if one motor will be a successful power source for Ellie

Bob

[Paul TParticipant @pault84577]

Bob

It would be a good point of reference for potential builders as they will be able to compare the difference,

Paul

[Bob Abell 2Participant @bobabell2]

Shop floor to Office Block PT1

Couldn`t sail today, due to inclement weather……..

So I made hay while the sun didn`t shine!

Finished Brutus windows and installed the Brushless motor in Ellie!

Looks different with the windows?

Bob

It was an easy job modifying the coupling and fitting the Brushless motor

Very pleasing

General view of Ellie……Only one battery is being used

[Paul TParticipant @pault84577]

Hi Bob

The Ellie boat looks crisp and has cleaned up nicely. I'm expecting some very fast hi jinks from the brushless motor.

Looking at Brutus I can't help feeling that something is missing…….. I cant put my finger on it but it just doesn't look right.

Paul

Someday I will explain what inclement weather actually means.

 

Edited By Paul T on 07/06/2014 18:18:44

[Bob Abell 2Participant @bobabell2]

I think a few brass portholes along the hull sides would help?

Or square type windows?

Bob

[Paul TParticipant @pault84577]

No Bob it doesn't need portholes or windows, what I am looking for is far more fundamental but I will know what it is when I see the boat in the water.

[Bob Abell 2Participant @bobabell2]

Hello Paul

Pleased to say that the Brushless motor fitted in Ellie yesterday……Ran with sweet perfection, the instant it was switched on!

So we can now cheerfully say, that the motor is a nice fit for Ellie………I like it

I think, for twin Brushless versions, some sort of interference screening may be required?

Bob

[Kimosubby ShipyardsParticipant @kimosubbyshipyards]

Just to comment.

Thought I'd wait till I checked my system out – I have three brushless motors in a PT boat, each on its own ESC and all run just fine on the bench. The outer two run from twin sticks (tank steering) and the centre from the stick that was replaced by the twins, but set up on the aerial on another channel. I intend to bring that one on song when the boats up to half speed. Still on the building blocks as I'm ruthlessly eliminating any excess weight – shortening wires as well.

I've read through your posts but cannot suggest why there's a problem.

If I've room I'll bring her to Haydock – we've teamed up with Gareth and Elizabeth Jones, and called ourselves the "Vintage Crew" – so we ought to be able to get a large group photo of the forum posters?? Sorry Ashley, it's a bit North for you.

Kim

[Diede van AbsParticipant @diedevanabs87670]

I have no clue either as to what went wrong on your twin brushless brutus setup, I am seriously thinking about a faulty ESC or lack of setup, despite what the seller told you. I ALWAYS program my ESC's, just to make sure they're set up the way I want it. Never had issues with them, apart from one burned motor and ESC due to serious abuse from my side.

Brushless motors and ESC's do not need additional electrical shielding or anything, typically.

That Turnigy looks smart in your boat, I run a couple of alike motors in a tugboat with great succes – without tow I have enough power to get it on the plane and looking silly

I can't wait to see how your Ellie will perform with its new brushless oompf! What size/type motor is it? Can't read the label well enough.

Edited By Diede van Abs on 09/06/2014 10:24:08

[Bob Abell 2Participant @bobabell2]

Many thanks, Diede

The motor certainly runs fast and smooth…..The size of motor is mentioned early on in the Brutus forum

Today would have been ideal for a test run, but got too much to do domestically

Bob

[Bob Abell 2Participant @bobabell2]

Good news!

Sailed Ellie today and it ran beautifully!……What a nice surprise?

Luckily, I glazed the front windows, as the spray was everywhere!……My pal Duckie has made a nice video and will be posting it tonight via a link to YouTube

The brushless motor was really splendid, very quiet with smooth effortless running, it went on the plane quite easily.

Due to the spray problem, we were unable to go flat out, but should be ok for the show on Sunday

The Brutus performance was not too good. The JR/ Futaba plug was a bad fit and caused problems, so we reworked it!

The motors were excessively noisy, but it could have been the boxy hull acting as an amplifier? The props seemed as though they were too small? It ran nicely at times…. See video for the full story

It kept running fast and slow for some reason and eventually, the fuse went!

Can't understand why the fuse would blow?………Using 7,2v batteries the props are two blade 40 mm dia

Bob

[Paul TParticipant @pault84577]

Hi Bob

I am eagerly awaiting the Ellie video just to see how the hull performs with a brushless motor, the Brutus sailing looked perfect to me….the large hull will act just like a guitar body and amplify the sound of the twin motors, it might help to mount the motors on rubber bushes and stick sound absorbing pads on the inside of the hull to prevent resonance.

Paul

[Bob Abell 2Participant @bobabell2]

Hello Paul

The Ellie boat was well received at the pond and one chap wanted to buy it!

He wanted to make the MTB version, but he had no power tools

Bob

[lnvisiblemanParticipant @lnvisibleman]

She looks lovely on the water.

Nice video Bob !! Such a shame the commentary was in some strange foreign tongue.

Mike

[Bob Abell 2Participant @bobabell2]

Thank you Mike

Both boats were great fun on the water!

Ellie was super fast and Brutus was…..Well?…….A brute!

A major problem has cropped up with Brutus!

It seems that the new motors can gobble up more power than the wiring is capable of dealing with!

How do we get round that serious problem?….I've never come across this problem before!

Bob

[lnvisiblemanParticipant @lnvisibleman]

Bob

Assuming the wiring is not that which is attached to any units such as esc ( they should easily handle all the power that the ESC can deal with ), and is only the wire that you have installed, the answer is surely to use a slightly thicker grade of silicone wire which is far more hear resistant than normal equipment wire

Mike

[lnvisiblemanParticipant @lnvisibleman]

Posted by Bob Abell on 10/06/2014 18:13:58:

Hello Paul

The Ellie boat was well received at the pond and one chap wanted to buy it!

He wanted to make the MTB version, but he had no power tools

Bob

That shouldn't be a problem, I manage with only a scroll saw and various hand tools.

Admittedly the are not up to the standards of some on here but it is good enough for me.

Remember that in the land of the blind, the one eyed man is king.

Mike

 

Edited By lnvisibleman on 10/06/2014 19:45:44

[Bob Abell 2Participant @bobabell2]

Hello Mike

Paul is talking about changing the wires on the batteries!…..And they are brand new! @ £29.00 each!

I feel confused dot com!

Bob

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