Battery life via canbus without engine running

[GS Bloke]

Hi
I am about to buy an airbed pump that inflates and deflates and this will run off the canbus system on my '07 1200GSA using the socket on the rear left of the bike.

This pump will be used twice between engine runs: once to inflate, and once to deflate, and maybe a phone recharge as well.

Does anyone know how much usage you can get out of the bikes battery before worrying about not being able to start the bike from cold?
I know it depends on the quaility of the battery etc, but mine is a good battery - well so my Optimate says away

Thanks

 

[John Armstrong]

Personally, on any bike I'd have the engine running as it takes in the region of 5 minutes to pump up an airbed and that'll hammer any bike battery.

Secondly, all the airpumps I've owned have tripped the bikes supplied accessory socket, so you'll need one that is wired in separately (and fused).

Thirdly if you do go down the route of engine off charging, Wunderlich etc sell a plug that detects when the supplying battery is getting too low in its opinion. How succesful it is in sensing the correct time to shut off I haven't a clue

 

[GS Bloke]

Secondly, all the airpumps I've owned have tripped the bikes supplied accessory socket, so you'll need one that is wired in separately (and fused).

Interesting, how do you reset the tripped socket?

 

[John Armstrong]

Secondly, all the airpumps I've owned have tripped the bikes supplied accessory socket, so you'll need one that is wired in separately (and fused).

Interesting, how do you reset the tripped socket?

Switch the ignition off and back on IIRC.

 

[GS Bloke]

IIRC ??

ah - got it 'if I remember correctly' http://acronyms.thefreedictionary.com/IIRC

 

[Timpo]

Rob, look back in the 1200 section, there are many tails of battery failure of normally used battery/condition. And then your looking to used store energy in the battery to run a pump and then expect the battery to crank a 'cold' (worst condition for starting amp loading) engine.
I would not risk it.
Also the canbus socket carries a 5A max load iirc, over that results in the brain shutting down the socket.
The way I would do if it I had to would be to wire in a fused socket direct to the battery and leave the engine running whilst the pump runs.

Timpo.

 

[GS Bloke]

Personally, on any bike I'd have the engine running as it takes in the region of 5 minutes to pump up an airbed and that'll hammer any bike battery.

Secondly, all the airpumps I've owned have tripped the bikes supplied accessory socket, so you'll need one that is wired in separately (and fused).

Yesterday I bought a 12v pump from Halfords (has an inline fuse rated of 15a)and tried it on the canbus system, I couldn't get it to trip out, the pump kept going. I only ran it for about 20 secs or so and put it under some load by blocking the air pipe.

How long was it before yours tripped out?

 

[GSmonkey]

.....sounds like a really bad idea. Just before you crank your bike on a cold morning camping in the middle of nowhere you stress your battery deflating an airbed after inflating the night before.

I think the solution to the problem is made by Thermorest.

 

[GS Bloke]

I dont need to use the battery to deflate my airbed, I just pull out the bung and roll it up.

 

[VAL. H.]

Hi
I am about to buy an airbed pump that inflates and deflates and this will run off the canbus system on my '07 1200GSA using the socket on the rear left of the bike.

This pump will be used twice between engine runs: once to inflate, and once to deflate, and maybe a phone recharge as well.

Does anyone know how much usage you can get out of the bikes battery before worrying about not being able to start the bike from cold?
I know it depends on the quaility of the battery etc, but mine is a good battery - well so my Optimate says away

Thanks

We have done exactly what you're thinking of doing many times over the last couple of years, both on a 1200 and a 650gs.
Most airbed inflaters including the Halfords cheepie which we use, will inflate a double airbed in just over a minute.

We use a 20 foot extension lead made up especially so we don't need to move the bikes, and have never had any issues, even when used three of four days in a row.

The only thing I would suggest is that you fit a second socket direct to the battery as the CanBus sockets wires are exposed to the crap thrown off the rear wheel and will corrode and break of leaving you without power 'and a flat airbed' I actually fitted two extra sockets on the front panels just under the Handel bars, with the intension of fixing the CanBus one but as yet have not gotten around to it.

Val.

 

[VAL. H.]

I dont need to use the battery to deflate my airbed, I just pull out the bung and roll it up.

It'll deflate quicker and better 'making it easier to pack away' if you do use the pump.

Val.

 

[GS Bloke]

Thanks for that, I do have a 2nd socket from Nippy Normans, but haven't fitted it yet.
I was going to get a pump that sucked as well as blowed, but opted for just a blow augie) os thats why I don't need to deflate using battery power.

I have a mud slinger on my GS so no dirt gets onto the canbus socket at all.

Which power outlet do you run your Halfords cheapie from, the canbus, or direct power from battery?

 

[GS Bloke]

It'll deflate quicker and better 'making it easier to pack away' if you do use the pump.

Val.

My Halfords cheapie only blows as it is desgined for inflating tyres.

 

[VAL. H.]

My Halfords cheapie only blows as it is desgined for inflating tyres.

That'll take weeks. Have a look at this http://www.halfords.com/webapp/wcs/..._productId_564293_langId_-1_categoryId_165648

It's not the same as mine but the price is. mine looks more like a pistol/hairdryer. they are very quick both inflate and deflate.

A car pump doesn't move enough air to be effective.

Val.

 

[John Armstrong]

My Halfords cheapie only blows as it is desgined for inflating tyres.

Reverse the terminals then it'll suck instead of blowing

 

[GS Bloke]

That'll take weeks. Have a look at this http://www.halfords.com/webapp/wcs/..._productId_564293_langId_-1_categoryId_165648

It's not the same as mine but the price is. mine looks more like a pistol/hairdryer. they are very quick both inflate and deflate.

A car pump doesn't move enough air to be effective.

Val.

Duh - thats something else I'll have to buy now

 

[GS Bloke]

Reverse the terminals then it'll suck instead of blowing

Looks like you need your terminals reversing me ole mucker

 

[Wapping]

I actually fitted two extra sockets on the front panels just under the Handel

"Hallelujah! Hallelujah....."

 

[Toby]

Is a pump really needed?

We went two up, to the Spa GP last year.
It was our first bike/camping trip and our kit was not bike friendly ie big and bulky.
The mattress was one of the rubbery cloth type and a double sized. Space was running out for the pump so I did a test blow in the living room to see how long it would take to inflate.
I started gently and took good intervals between puffs and the thing was inflated in 5 minutes and took about 50 puffs. I was a bit light headed at the end but no more than after a few beers.
The trick to save time deflating the mattrass is to pull out the plug when you drag it out of the tent, it is then deflating when you break down the tent and flat when you pack the bike.
The pump got left behind in the garage.

There used to be an accessory pipe you could buy that went on your car's tail pipe and used exhaust gasses to inflate things. Not sure if they are still available/fit a bike exhaust/too clever filling a mattrass that might leak while you are asleep and you wake up dead

 

[Fanum]

I want to know how to recharge my phone with an air bed pump