"Martin X. Moleski, SJ" <moleski@[EMAIL PROTECTED]
> wrote in message
news:pdadnUl9hfxn8fTVnZ2dnUVZ_jSdnZ2d@[EMAIL PROTECTED]
> On Mon, 30 Jun 2008 15:57:41 -0700 (PDT), Ted <tkennedy63@[EMAIL PROTECTED]
> wrote
> in
> <b975c373-fd62-4388-8d65-3ad1457d1364@[EMAIL PROTECTED]
>:
>
>>I am having a bit of a problem getting my ST 51 to run smoothly. I
>>have had STs before so I know you have a delicate balance between the
>>low end and high end before you get it just right. I recall reading
>>somewhere that the position of the spray bar is very critical as well.
>>Has anyone also heard of this? And what position would be ideal? Most
>>engines like it pointed straight down but I seem to think the STs
>>prefer a little upward thrust of the spray so if you are looking from
>>the needle valve side it would be pointed around 4 o'clock. Any
>>thoughts or experience on this? Many thanks.
>
> I have no personal experience of tuning an ST.
>
> Their web site (and many other people who have
> posted here since 1995) recommends that the
> hole in the spraybar be straight down:
>
> http://www.supertigre.com/faq/product-faq.html
>
> As often happens with tuning, people disagree
> about what works and what doesn't work. In
> my view, you should feel free to experiment
> and re****t your results here so that the peanut
> gallery can learn from your mistakes. :o)
>
> Marty
> --
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-------------
Many folks, because of previous exposure to OS "no break-in" engines,
attempt to fine tune and fly a Super Tigre engine long before it is ready
to
be put into service. These are the folks that end up complaining about
those
miserable ST carburetors.
Marketing will not mention just how long an ST engine needs to be
broken-in
because of a possible loss of sales, so they let their customers bumble
around making confetti of their models because of an improper break-in
regime. All marketing cares about is profit. Not their customers' well
being
or enjoyment of their purchase.
Super Tigre engines are fine engines, but none of them come ready to fly
right out of the box, like OS. Trying to break-in an ST engine in the air,
unless it is ABC, is pretty much a waste of time and nearly a sure bet to
destroy your model, unless you are very experienced and are accustomed to
deadsticks and their requisite landings.
This does not make ST engines a bad buy. It simply means that one has to
learn something new and employ a test stand for break-in. Once
accomplished,
an ST engine will last many decades of fairly rigorous use. Not done
properly, the engine can be ruined in no time flat.
Once the engine is broken-in, the carb that comes with ST engines suddenly
changes into a *****cat to adjust and operate. Surprise!
Ed Cregger
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