Motor movers

GeoffSS replied on 22/10/2021 11:37

Posted on 22/10/2021 11:37

We've just bought a new Swift Basecamp 2 caravan to replace our old Autosleeper Duetto campervan and, partly because I'm not as strong as I was, we opted to have a motor mover fitted.  The electrical isolation switch is inside the van which makes it awkward to reach if the van's loaded ready to go with bikes, model aeroplanes etc stowed.

I accept the desirability of electrical isolation when the van is parked either at home or on site but is it necessary when towing?  Obviously the friction drives are mechanically disconnected so, even if the mover motors are accidentally triggered (unlikely), they're not going to do much (nor consume much energy off load, for that matter).

It would simply be easier to leave them connected whilst towing as they may be needed on arrival anyway.  I can't see any problems with this but if there are, what are they?

Geoff

PeteCI replied on 10/03/2022 15:52

Posted on 09/03/2022 21:37 by Tippsy

HI, looking forward to picking up our new Bailey Unicorn Cadiz in in the summer (fingers crossed!). Dealer has offered to fit a Powrtouch Evloution at a cost for supply and fit of £1350. This seemed a bit steep to me but is that a reasonable price does anybody know?

Thanks in anticipation.

Posted on 10/03/2022 15:52

It sounds like a lot to me. When I bought my last Bailey I made inclusion of a new Powertouch mover and suitable battery a codition of purchase. I expect times have changed now though, it seems to be a sellers market since the pandemic struck.

On the original topic of position of the isolator switch, the same Bailey had a factory fitted "provision for motor mover" with the isolation switch in a bed locker accessible through an outside hatch. It is convenient to use but no interlocking with EHU cable so easy to try to use both together. The reason for Bailey's decision was probably because the battery is fitted under the floor rather than in an externally accessible box.

Navigateur replied on 11/03/2022 10:26

Posted on 11/03/2022 10:26

When the control box switches itself off, part of it is obviously still active and waiting for a signal from the handset to switch on again.  As well as a steady drain on the battery, the power supply in the controller and the radio circuitry involved have a finite lifespan. Often called MTBF - minimum time before failure.

Seems silly to be using that up when one does not need to.  And that is without the danger that something gets inadvertently left on top of the controller and causes it to overheat, possibly to the point of something going on fire.

DSB replied on 12/03/2022 17:09

Posted on 12/03/2022 17:09

I couldn't manage without a motor mover these days, to be honest.  Our caravan is just a little heavy for us to move manually, and I feel I need the mover for 'fine tuning' when getting the 'van into the correqct position.  Fortunately, our switch is just inside the side locker, so is easy to access.  Should I change the caravan, I'll make a mental note to make sure the isolation switch is sited conveniently.  Personally, I'd look into getting the switch re-located to a convenient spot  if possible.

David

ocsid replied on 12/03/2022 17:29

Posted on 12/03/2022 17:29

Could not the issue be solved very simply by using one or a parallel pair of 100Amp relays in the "right" place, operated by a minor power feed from a conveniently located switch?

LINK

The "right" place being a location to minimise the high current cable run.

Seems quite wrong to me to go routing the high current cabling way longer than is really needed, just to locate the switch function in a convenient place.

After all, our car's starter high current cabling is not wired through to the dash or column, just a signal line.

Amesford replied on 13/03/2022 10:49

Posted on 13/03/2022 10:49

Our mover is on its third caravan so when we changed our caravans we negotiated the transfer of it to the new for free 

 

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