Saito .72 help needed

[Daniel J. Hamlett]

If you are using the VP-20 pump http://www.perrypumps.com/prod02.htm then it 
is adjustable.  I am running one on a Saito FA100.  It took a while to get 
the mixture right.  Fter it is all said and done it worls great.  I didn;t 
have to make many adjustments to the pump though, just a small tweak.  If 
you are loading up at the bottom end & it takes a while to run up, bring it 
to full open, adjust the top end first.  Lower the engine to idle ajdust the 
low end until the transition improves.  Start by going richer.  I know that 
it sounds weird but you will never damaged an engine that is broken in by 
going too rich,  If the problem gets worse then you know that you re running 
to rich.  If the Problem was a lean condition thenm you could chance doing 
some damage if you start by going to an even lear\ner setting.  If it still 
won;t transition well, try to set the low end needle to alow for a steady 
idle.  If you can't get that then the problem is in the pump.  Again richen 
up the pump I believe you turn the blue nut coubter clockwise to richen. 
then start from the top  again.  if it still wont run well you may have a 
bad pump.  Good luck.

----- Original Message ----- 
From: "Ken Thompson III" <mrandmrst at comcast.net>
To: <discussion at nsrca.org>
Sent: Sunday, November 07, 2004 4:24 AM
Subject: Re: Saito .72 help needed


> Wladimir,
> If your engine is broken in, and you are running a 13x6 prop, or 
> equivilent, it sounds like your low end needs to be leaned out a little. 
> Someone correct me if I am wrong, but I don't think the Perry pump is 
> adjustable, so that shouldn't be the problem.
> I start by setting my top end to 400 to 500 rpm under top speed and then 
> adjust my low end for a clean idle.  To adjust my transition I use the low 
> end needle and turn it a little at a time, in or out, whatever it takes, 
> to obtain a clean transition.
> Of course if I am wrong about the Perry, you might need a tad more pump 
> pressure to help with the transition.
> Just my opinion, there are a whole lot more experienced people out here 
> than me.
>
> Good luck,
>
> Ken
>
>
>
>
> ----- Original Message ----- 
> From: "Wladimir Kummer de Paula" <wladimir_kummer at ig.com.br>
> To: <discussion at nsrca.org>
> Sent: Sunday, November 07, 2004 6:00 AM
> Subject: Saito .72 help needed
>
>
>> Hi folks,
>>
>> I´m running a Saito .72 in a Aresti .40. The engine (mounted inverted, OS 
>> F plug) is equiped with a Perry oscilating mounted as per instructions, 
>> the tank is on the balance point (about 8in. from the spray bar). I´m 
>> getting a erratic run. Seems to be over rich at the ends (top and idle) 
>> and takes about 3-4 seconds to pick up rpm as the barrel is opened, maybe 
>> a lean mid-range. What could be wrong?
>>
>> Cheers,
>>
>> Wladimir Kummer de Paula, MD
>> Neurology Clinics
>> Sarah Network of Rehabilitation Hospitals
>>
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