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[G3LMO]

Hi guys,
 
Getting back into RC boats after many years away.
 
Have acquired an unfinished 44" Vosper Thornycroft FIRE BOAT, partly fitted out with a 12v LUCAS 10AHR LA power battery, two Clifton Precision motors wired in parallel from a 43HX ESC (with BEC), siren and water cannon control from a 3rd channel servo (off a 6 Chn FUTABA 40Mhz Tx/Rx).
 
Q: I don't seem to be able to trace an info what so ever on the 43HX ESC.  The very old/simple Electronize website does not list it at all. Would appreciate any known details on its operation and/or circuit diagram, etc, etc.
 
73's Nev (G3LMO)
 
 

[Stan]

Having checked with Eletronize that controller is rated at 15 amps and it does not have a BEC facility fitted. I will check and see if I have old info sheets for that controller.

Stan

[G3LMO]

Thanks Stan.....Any info (even if old) appreiated.
 
But.....It sure does have a BEC connection. (The Rx runs ok anyway when connected to Chn 2 (Chn 1 is rudder...Chn 3 Water Cannon and/or Siren, which also work OK).
 
73's Nev (G3LMO)

[inertia]

Nev
Chuck the lead-acid battery away (or at most save it for a tug). It's far too heavy for a model which is already no lightweight. Use a NiMH or LiPo pack. That's of course unless you enjoy watching a powerboat do a very passable impersonation of a narrow-boat.......
Dave M

[G3LMO]

Hi Inertia.....

What about rechargable Alkaline?  I have (and do) use quite a few of those Ham Radio wise, and or course they have a cell voltage of 1.5 per cell.  they are a little more difficult to obtain, but well worth the extra individual cell voltage over say NiMh (1.2v).

73's Nev (G3LMO)

[inertia]

Nev
If these are RAM cells (Rechargeable Alkaline Manganese) then best forget it, m'duck. The current they might reasonably be expected to deliver is milliamps; you will need multiple full-size amps for motors. Their capacity reduces with every charge cycle, and often so does the voltage. They may be the bee's knees for Ham Radio use but they are definitely not the chaps to use for 44" boat-sized DC motors. If they were then someone on this forum would know someone who uses them successfully - and then we'd all be onto the same good thing.
Does anyone? I had to look up the basic gen on them, and it seems that most of the companies who used to manufacture them have discontinued them. That says something quite definite to me.
Take my previous advice and go for either NiMH or LiPo cells. These people are excellent for what you need. http://www.componentshop.co.uk/
Sometimes staying with the herd isn't necessarily a bad idea but, as I often say, suit yourself.
Dave M

[fredd]

From an advert in 2000 looks like you have a 43HVR same as the 43HX but incorporating a BEC for which you paid an extra £2.20.
2 to 24 volts motor battery ,15 amp rating

Fred

[G3LMO]

Hi Fred......Many thanks for that.  Would the 'R' in the sufix mean Forward AND Reverse?   As I see some of the type/model numbers are prefixed FF and some FR.

73's Nev (G3LMO)

[malcolmfrary]

Hi Fred......Many thanks for that.  Would the 'R' in the sufix mean Forward AND Reverse?   As I see some of the type/model numbers are prefixed FF and some FR.

73's Nev (G3LMO)

They all did forward and reverse.  The VR probably indicates "Voltage Regulator" (BEC), although any could easily be retro-fitted with a 7805 regulator, the PCB was laid out ready for one, along with space for wiring its switch.

[fredd]

Yes VR was for the Voltage Regulater version
A correction
Type 43HX was 2 to 24 volts
Type 43HVR was 7 to 24 volts

The ad said BEC would work with 5.5 volt input but recommended  min 7 volt

[G3LMO]

Thanks Malcolm/Fredd........Much appreciated.  Although I'm still a little confused, as the Electronize website does show that some models of their ESC's were/are FORWARD ONLY.

Am in the process of checking the two motors stall currents, to confirm that this 43HX is man enough anyway for this 44" X 14" vessel.  But my Test Meter only goes up to 10 Amp,  So visiting the Newbury Ham Radio Rally on Sunday to poss pick up an old cheapish single scale 20(+) Amp job.

73's Nev (G3LMO)

[inertia]

Nev
For practical purposes you can ignore the stall current when choosing a speed controller. If it was at all relevant then we'd all be screaming for >60A ESCs for our little 540 motors. Practical experience shows that it's the continuous current on load which is a better indicator of the required ESC. Common sense says to put a fuse in the positive lead from the battery to the ESC; the value should be slightly less than the maxium current capacity of the speed controller.
As far as I know only the very big Electronize ESC (40A) is forward only. The 43 certainly is F&R.
DM

[hmsantrim]

Hi. G3LMO.
 
I have the blurb for the 43HX, if you PM your address I can send a copy.

 frank

[G3LMO]

Ta Frank.....Wilco 

73's Nev (G3LMO)

[G3LMO]

Hi. G3LMO.
 
I have the blurb for the 43HX, if you PM your address I can send a copy.

 frank

Did you get my PM OK Frank?
 
73's Nev (G3LMO)

[hmsantrim]

Did you get my PM OK Frank?
 
73's Nev (G3LMO)

  roger that...