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[karls]

Yes it me again im getting there all i need now is a cheap ESC and servo for the rudder (any recommended please ). Just got myself a cheap 2.4 radio set from giantcodRC

and last thing for now is if i buy a 6v 4h battery and charger will it give me long run times or do i need a 12v battery

Thank you all for you help and saving me cash

This is going into a seaport tug Dickie..and belive it or not im having fun doing mods to it

[Prophet]

thats pretty easy ... search online for a mtronic's esc, make sure you get one with forward and quick reverse ( some have a braking function, avoid these for boating) and any standard servo should do the job try looking through giant cod's site for the bits you need

[karls]

thats pretty easy ... search online for a mtronic's esc, make sure you get one with forward and quick reverse ( some have a braking function, avoid these for boating) and any standard servo should do the job try looking through giant cod's site for the bits you need

Cheers your the man

[Prophet]

esc' rated 60amp manx (over kill for a dicky but its cheap which is the idea i guess)
http://www.giantcod.co.uk/60amp-boat-p-404813.html

heavy duty servo btu you can get a lesser version a bit cheaper.. dont get the micros i dont think that will do the job in a dicky
http://www.giantcod.co.uk/towerpro-mg946r-12kg-heavy-duty-servo-p-405044.html

[karls]

esc' rated 60amp manx (over kill for a dicky but its cheap which is the idea i guess)
http://www.giantcod.co.uk/60amp-boat-p-404813.html

heavy duty servo btu you can get a lesser version a bit cheaper.. dont get the micros i dont think that will do the job in a dicky
http://www.giantcod.co.uk/towerpro-mg946r-12kg-heavy-duty-servo-p-405044.html

Hi
The servo looks good but the ESC is not in stock
will a 3003 servo do? and what do you think of the mtroniks marine 15a plug and play is it any good and will it do the job?
many thanks karl

[barriew]

Its just as well the ESC is not in stock - its for a Brushless motor

You can't do better than give FLJ a ring - I think he also sells servos, so you could save on postage

Barrie

PS FLJ is ACtion if you hadn't realised - see his add on the Forum

[Dueller]

Basically the higher the voltage of the battery the faster it will turn the motor (not counting your using an ESC) 12 volt will probably be too fast flat out.  It's the Ah that will give you longer running times. I have a seaport (dickie) with a 6v 4Ah battery and i get plenty of run time ( i have never run it out at the pond). FLJ's esc's will keep running down to 2 volts, dont forget your battery will lose voltage as it runs down.  Most esc's have a safety cut out at around 5 volts.

I dont know how much you know about motors and Ah (amp hours) but you can roughly calculate running time ie:

With a 4Ah battery a motor pulling one amp will last 4 hours or a motor pulling 4amps will last 1 hour etc. Not totally accurate as there is friction etc to deal with but it's close enough.

[karls]

Basically the higher the voltage of the battery the faster it will turn the motor (not counting your using an ESC) 12 volt will probably be too fast flat out.  It's the Ah that will give you longer running times. I have a seaport (dickie) with a 6v 4Ah battery and i get plenty of run time ( i have never run it out at the pond). FLJ's esc's will keep running down to 2 volts, dont forget your battery will lose voltage as it runs down.  Most esc's have a safety cut out at around 5 volts.

I dont know how much you know about motors and Ah (amp hours) but you can roughly calculate running time ie:

With a 4Ah battery a motor pulling one amp will last 4 hours or a motor pulling 4amps will last 1 hour etc. Not totally accurate as there is friction etc to deal with but it's close enough.

Thank you for that i now know 100% more about motors now then i did before this post   This is very good info for someone like me
regards karl

[hmsantrim]

Hi karls.
           I have one of these in my seaport.




 I made a 6v battery pack with c cells to keep the weight down but the 6.4ah lead acid will do the job.  

 If you want to know how to find out what amps your motor will draw I can send you a diag its self explanitory
    

                                cheers Frank

[karls]

 If you want to know how to find out what amps your motor will draw I can send you a diag its self explanitory
    

                                cheers Frank


[/quote]

Thanks Frank  I will be using the standard motor but im going to get a 6v 4ah gel battery and it looks like i will use the same esc as you..
A diag would be great..
regards karl

[DickyD]

I have a 6v 5mAh SLA battery in my Seaport conversion. It has the same external dimensions as 6v 4mAh battery but gives a longer run time.

http://www.component-shop.co.uk/html/body_lead-acid.html

[DickyD]

Hi
The servo looks good but the ESC is not in stock
will a 3003 servo do? and what do you think of the mtroniks marine 15a plug and play is it any good and will it do the job?
many thanks karl

A 3003 servo and the 15amp plug and play will be fine.

[karls]

I have a 6v 5mAh SLA battery in my Seaport conversion. It has the same external dimensions as 6v 4mAh battery but gives a longer run time.

http://www.component-shop.co.uk/html/body_lead-acid.html

Cheers DickyD i like your seaport conversion do you like tugs now? i may copy loads of your ideas (sorry) 
The batterys are cheap
thank you for your help
regards karl

[dodgy geezer]

Hmm... If you're looking for cheap, I use a lot of these servos from Giant Cod at £2.32 a throw... http://www.giantcod.co.uk/towerpro-sg90s-micro-servo-p-403861.html

And I have a box full of these ESCs which I got for £1.90 each - I think they have now gone up to £2.46 each - out of my price range ... http://www.r2hobbies.com/eng/proddetail.php?prod=rcps51601


But I would keep them well below their rated value of 25 amp.....

[karls]

I have a 6v 5mAh SLA battery in my Seaport conversion. It has the same external dimensions as 6v 4mAh battery but gives a longer run time.

http://www.component-shop.co.uk/html/body_lead-acid.html

Battery and charger now on order £13.74

just the esc and servo to get

Cheers DickyD for the link
atb karl

[karls]

Hmm... If you're looking for cheap, I use a lot of these servos from Giant Cod at £2.32 a throw... http://www.giantcod.co.uk/towerpro-sg90s-micro-servo-p-403861.html

And I have a box full of these ESCs which I got for £1.90 each - I think they have now gone up to £2.46 each - out of my price range ... http://www.r2hobbies.com/eng/proddetail.php?prod=rcps51601


But I would keep them well below their rated value of 25 amp.....

Cheers Dodgy  Im i right in thinking that the esc is forward only? or im i being a numbnut?
atb karl

[malcolmfrary]

Hmm... If you're looking for cheap, I use a lot of these servos from Giant Cod at £2.32 a throw... http://www.giantcod.co.uk/towerpro-sg90s-micro-servo-p-403861.html

And I have a box full of these ESCs which I got for £1.90 each - I think they have now gone up to £2.46 each - out of my price range ... http://www.r2hobbies.com/eng/proddetail.php?prod=rcps51601


But I would keep them well below their rated value of 25 amp.....

Not too sure about a forward only ESC for a tug.

[dodgy geezer]

  ...Im i right in thinking that the esc is forward only?

Alas, you are right - I wasn't reading your requirements carefully enough. But they are very cheap - at that price they're worth buying for the connectors alone....

Their cheapest reversing ones are £8.22. I can only dream of having such a fortune to spend on an ESC, so I have never tried one of these.... specced at 110 amps, mind, but the reviews say they die at 50.....

[karls]

Alas, you are right - I wasn't reading your requirements carefully enough. But they are very cheap - at that price they're worth buying for the connectors alone....

Their cheapest reversing ones are £8.22. I can only dream of having such a fortune to spend on an ESC, so I have never tried one of these.... specced at 110 amps, mind, but the reviews say they die at 50.....

im starting to get the hang of this esc bit.. cheers guys