Can anyone explain the danger in this??????

Aprilia Forum

Help Support Aprilia Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
O

OZMILLE

Guest
Hey guys

Firstly, its a thread relating to a lion shagging a small gazelle or anything like that.

I was stripping the tank of last week for paint prep, and noticed that after pulling out the pump thingy from the bottom of the tank, that there is electrical wires all over the shop.............submersed in gas :eek:

Obviously it wont blow, maybe I thought :dowhat

Can any tech head out there please explain why these wires DO NOT IGNITE the fuel in the tank and send me to the moon?? :pirate

Really curious!!

Cheers Pete :thumbup
 
OZMILLE said:
Hey guys

Firstly, its a thread relating to a lion shagging a small gazelle or anything like that.

I was stripping the tank of last week for paint prep, and noticed that after pulling out the pump thingy from the bottom of the tank, that there is electrical wires all over the shop.............submersed in gas :eek:

Obviously it wont blow, maybe I thought :dowhat

Can any tech head out there please explain why these wires DO NOT IGNITE the fuel in the tank and send me to the moon?? :pirate

Really curious!!

Cheers Pete :thumbup
Click to expand...

OOOPPs, heres a pic

2008_12181612090052.jpg
 
Fcuk thats dangerous, im selling my bike now :biggrin



All electronic fuel pumps need electric and wiring mate, its no different to your car, its one of them dont worry things, except ya not gonna get blown up and ride ya bike, someone will be along for an indepth technical wiring explanation soon :thumbup
 
pete

can't comment on wires

but while u have the pump out, check the condition of the drain hoses that run thru the tank
if they are starting to look a bit iffy replace them
 
cheesy said:
pete

can't comment on wires

but while u have the pump out, check the condition of the drain hoses that run thru the tank
if they are starting to look a bit iffy replace them
Click to expand...

Still no tech heads around :eatcorn

Thanks Cheesy, are they the ones that run to the breathers near the fuel cap?? If so they are a bit split and old looking up the top there, might just do that mate :thumbup
 
OZMILLE said:
Still no tech heads around :eatcorn

Thanks Cheesy, are they the ones that run to the breathers near the fuel cap?? If so they are a bit split and old looking up the top there, might just do that mate :thumbup
Click to expand...


Yeap thats the ones (brown coloury ones)

If thats the case change them
they let water into the tank if split at top
And if they look suspect say half way thru tank youl find youll loose fuel for no apparant reason
 
not 100 percent on the physics of it mate but if you look all of the connectors are covered and permenant so the chances of a spark are slim anyway, also to create a spark you need oxygen as well , do you remeber the fire triangle from school?? now the pump most of the time is sumersed in fuel as well so no air round it...

well thats my theory dunno if im right but i does make sense in mondo griff:dunno

hope this helps...
 
fusebox said:
not 100 percent on the physics of it mate but if you look all of the connectors are covered and permenant so the chances of a spark are slim anyway, also to create a spark you need oxygen as well , do you remeber the fire triangle from school?? now the pump most of the time is sumersed in fuel as well so no air round it...

well thats my theory dunno if im right but i does make sense in mondo griff:dunno

hope this helps...
Click to expand...

The only triangle i remember from school was Ann Marie Smiths, she was hot but not on fire, no help i know but i was just remanising aaaahhhhhhhhh :biggrin
 
fusebox said:
not 100 percent on the physics of it mate but if you look all of the connectors are covered and permenant so the chances of a spark are slim anyway, also to create a spark you need oxygen as well , do you remeber the fire triangle from school?? now the pump most of the time is sumersed in fuel as well so no air round it...

well thats my theory dunno if im right but i does make sense in mondo griff:dunno

hope this helps...
Click to expand...

Hi Cheesy, thems the ones, and I alway blame poor fuel consumption on the right wrist :devious Will get them done now.

Griff, thanks mate, if you says it wont blow, well thats good enough for me :biggrin
 
Analogy

If you stood inside a gasholder, or gasometer, whatever you call them (holding your breath of course lol) and struck a match, the match would go out. No o2.

:)

Mark
 
mark99 said:
Analogy

If you stood inside a gasholder, or gasometer, whatever you call them (holding your breath of course lol) and struck a match, the match would go out. No o2.

:)

Mark
Click to expand...

Then what happens when the tank runs low, would it not expose a little oxygen to the pump/wire mechanism?? :dunno
 
OZMILLE said:
Then what happens when the tank runs low, would it not expose a little oxygen to the pump/wire mechanism?? :dunno
Click to expand...

It take more heat than you might imagine to ignite fuel even when the air/fuel mixture is at it's most volatile.

You tank is constantly venting the vapour to atmos anyway assuming the vents are not blocked and the air/fuel mixture is never enough in a tank to be explosive even with an ignition source.

If you take a milk bottle with fuel in it and drop match in it. 99.9% of the time the match won't ignite the fuel.
Your engine is designed to mix fuel and air at the optimal amount for a big bang yet it still takes thousands of volts via a spark plug to ignite it.

Or not as the number of mille won't start threads shows :biggrin
 
Ditto Spoonz comments and Fusebox's. There are no exposed (bare) wires or connectors so nothing to arc from / to.
 
im gona go home and drop a match in the tank right now, and if it explodes im blaming spoons...you insured mate...lol
 
Guys, petrol is not flammable. It's the vapour that is highly explosive. If you could submerse a light match into petrol the petrol would extinguish the match. Problem is the vapour above the petrol would explode before you got the match into the actual liquid part. Hence when your injectors are vapourising the fuel into the engine and mixing it with oxygen you get ignition. Ever heard the term flooded the engine? That's what happens so much petrol is vapourised into the cylinders without being burnt it collects back into liquid form and will not ignite. Simples.
 
Spud monkey said:
Guys, petrol is not flammable. It's the vapour that is highly explosive. If you could submerse a light match into petrol the petrol would extinguish the match. Problem is the vapour above the petrol would explode before you got the match into the actual liquid part. Hence when your injectors are vapourising the fuel into the engine and mixing it with oxygen you get ignition. Ever heard the term flooded the engine? That's what happens so much petrol is vapourised into the cylinders without being burnt it collects back into liquid form and will not ignite. Simples.
Click to expand...

Spoons/Spud, thanks for that insight, makes it a little easier to understand guys. :thumbup

Oli, dont worry about the match, pretty sure that going to singe your knuckle hairs :eek:
 
Spud monkey is right:thumbup The liquid cannot burn, only the vapor will. So this leads to the question: Why doesn't the fuel tank explode when not full?

Every fuel injected motorcycle, car, aircraft has a fuel pump in the tank to pressurize the lines. Fuel quantity wiring amperage is too low to start a fire, the fuel pump wiring amperage is high enough. If the connections are firm and pass the current to the pump, no fire can happen, even if the wires are bare. However, if the bare wires of opposite polarity touch each other and not immersed in liquid.....Boom! Electricity, as a rule, will ALWAYS seek the path of least resistance. A direct short, as in the bare wire senario, is less resistance than running the pump.
 

Similar threads

Asphalt & Rubber
Tradition Is Not A Business Model: Mission Motors
Replies
0
Views
1K
Asphalt & Rubber
Asphalt & Rubber
A
Tradition Is Not A Business Model: Mission Motors
Replies
0
Views
1K
Asphalt & Rubber
A

New Posts

Back
Top