From: Yvan on
Nedavno Noddy napisa:

> As I mentioned earlier, it doesn't get as cold here in sunny old
> Melbourne


What are the usual low winter temperatures in Melbourne (not the short
extremes that last for a couple of days)?


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From: Noddy on

"Yvan(a)office" <me(a)privacy.net> wrote in message
news:20071203123515.541466d6(a)informatika.21oktobar.com...

> What are the usual low winter temperatures in Melbourne (not the short
> extremes that last for a couple of days)?

Normally in the order of 2 to 5 degrees at the coldest part of the day
(which is usually early morning), but it can get to zero on occasion.

That'd be "brass monkey" weather for us, but for you it'd probably be a
summer holiday :)

--
Regards,
Noddy.


From: John McKenzie on
Yvan(a)office wrote:
>
> Nedavno Noddy pi�e:
>
> >> I just did some testing (nice sunny weather today :-). I drilled
> >> small hole near the top of the carburetor with a thread in it, and
> >> used a bolt to fix choke plate in opened position. I can now start
> >> and run on lpg from cold with spud pipes setup. I will have to test
> >> this again tomorrow morning, it was warm outside today.
> >
> > Well done.
>
> Not actually :-( It was relatively warm yesterday, and the engine did
> not cool completely. This morning choke block did not make any
> difference. I could not start the engine, and it would not idle until
> it warmed up almost to the normal operating temperature. But not to
> worry, amos ring is at final stages of design, I just need to fabricate
> it :-)
>
> > If you can get your minor niggles sorted out and come up
> > with an Amos ring type mixer that works, you should have a reliable
> > and well performing lpg system that will start & run regardless of the
> > temperature.
>
> I hope so :-)

There's another thing you might be able to try to help starting. On most
lpg setups like yours, when the ignition is switched on, the lpg module
will turn on the lpg flow for a second or two. Then it won't restart the
flow until the motor is running and a signal from the coil above a set
frequency is obtained. On some applications, this initial priming isn't
enough, and making your own press button switch to over-ride it, and be
able to prime for a second longer (or however long you need) can be used
in addition to that automatic 2 second burst.

that can sometimes help a cold start tremendously. Other than that the
'usual' technique for this kind of setup is to depress the accelerator
pedal approximately 2cm, and hold in that position as the key is turned
to start it.


--
John McKenzie

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From: Yvan on
Nedavno John McKenzie piše:

> There's another thing you might be able to try to help starting. On
> most lpg setups like yours, when the ignition is switched on, the lpg
> module will turn on the lpg flow for a second or two. Then it won't
> restart the flow until the motor is running and a signal from the coil
> above a set frequency is obtained. On some applications, this initial
> priming isn't enough, and making your own press button switch to
> over-ride it, and be able to prime for a second longer (or however
> long you need) can be used in addition to that automatic 2 second
> burst.
>
> that can sometimes help a cold start tremendously. Other than that the
> 'usual' technique for this kind of setup is to depress the accelerator
> pedal approximately 2cm, and hold in that position as the key is
> turned to start it.


I made this button a year or so ago. But I thought that it's a normal
lpg flow, as when engine is at idle not a "burst".

So the right technique for cold lpg start is slightly (not to the floor)
depressed accelerator pedal. What about warm (hot) starts?


--
___ ____
/__/ / \ ** Registrovani korisnik Linuksa #291606 **
/ / \/ /\ \ ** Registered Linux user #291606 **
/__/\____/--\__\ ** http://counter.li.org/ **
From: John McKenzie on
Yvan wrote:
>

> I made this button a year or so ago. But I thought that it's a normal
> lpg flow, as when engine is at idle not a "burst".

That's right - I was trying to choose the words to describe it - as it's
probably different place to place what words would be used!


> So the right technique for cold lpg start is slightly (not to the floor)
> depressed accelerator pedal. What about warm (hot) starts?

generally use the same technique, but if it doesn't start, switching the
lpg/petrol selector off and foot to the floor it'll fire, and the
instant it does, switch the lpg back on.


--
John McKenzie

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