Fuel Tank Capacity ...

[Devo McDuff]

Time for another couple of my daft questions folks.

Filled up with petrol last night from nearly empty (less than an 8th showing on the fuel gauge) and noted my KMs done (nearly 5000, though my clock was off for a good few months!) so I can figure out roughly what mileage I'm getting to the litre. Put 6 litres in.

Am I right in thinking that the reserve holds another 2? When filling up is there just a separate chamber that is filled at the same time as the main one and then this is just accessed when the fuel tap is switched to reserve? How does the fuel gauge work with that, is the gauge just for the main tank or does it include the reserve, or perhaps the gauge is for whichever is selected (would think that unlikely)? I'd suspect it's just for the main but enlightenment would be nice!

Ta, Dan

PS I'm talking about a PX125 Disc model BTW.

[bryno]

Yep, reserve just switches the fuel feed to a lower point in the tank..

Fuel gauge reads the whole tank, 2ltrs sounds high if the total capacity is not much more than 6ltrs.. anyway

Does it actually have a reserve? reason I ask is that the T5 doesn't even though the tap has the 'usual' 3 positions.

As it has a fuel gauge and a low fuel light they did away with the reserve..

[Devo McDuff]

Even though the gauge was showing as nearly empty it looked like there was still a decent amount in the tank, the 6 litres was on top of whatever was left in there. Which suggests to me that there is a reserve and that it's probably not included on the gauge. Far from sure though.

I hope so anyway, wouldn't be much fun to switch to reserve after getting caught short and then be greeted by chug, chug stop

Just found this: www.motorbike-search-engine.co.uk/2006_Bikes/px.html

Says the PX125 has 8 litre capacity. Also says the 150 has 8 litres with 1.6 reserve .... presume the 125 is the same?

[mark]

You may have a pre autolube tap possibly, or a knackered fuel sender unit.

[Devo McDuff]

2006 model so should be autolube tap shouldn't it? Sender seems ok if it's only supposed to report the main part of the tank (not including the reserve). Not really got a problem as such I don't think, just curious.

You going to the Lyons meeting on Monday Mark? Planning to come along, though stuff keeps coming up every ruddy Monday.

[skrappey]

The fuel indicator shows capacity of tank. Reserve is a little bit below the lowest point of the sender. Usually about 1.5ltrs. The LML has the same system, three point switch.
The T5 has a low fuel light, you live and learn!

[mark]

Hey devo this monday 28th its the AGM at poynton working mens club all very serios stuff :-Xbut back to normal the week after.[ well as normal as it gets]. ;D

[Ironduke]

I had a Disc, there is no reserve position on the fuel tap as they did away with that when they fitted fuel guages - the low level light is a reminder to get yourself to the garage so it is worth working out just how far you can get when the light comes on.
Those of us with older scoots have to put up with the engine cutting out which is fun!

Cheers

[joey]

All P range Vepas have an 8 litre tank, newer versions have warning light, older versions have reserve setting on the fuel tap, both kick in around the 2 litre mark.
To work out your AVERAGE fuel consumption you're going to have to ride about 50 miles, half around town and half on dual carriageway/motorway.
If you do all of your riding around town then your fuel consumption is going to be higher. If all of your riding is on fast roads (constant speed,) then your consumption will be slightly lower.
After 50 miles fill up again and see how many miles you have done you can then easily work out an AVERAGE miles per litre ratio.
For arguments sake I get roughly 8/9 miles per litre on my 210.

[Devo McDuff]

Thanks for the help chaps. That's cleared that up.