[NSRCA-discussion] YS points of interest

[Bob Kane]

Nice write up Tom, thanks.

Bob Kane
getterflash at yahoo.com


--- On Mon, 10/19/09, Koenig, Tom <Tom.Koenig at actewagl.com.au> wrote:

> From: Koenig, Tom <Tom.Koenig at actewagl.com.au>
> Subject: [NSRCA-discussion] YS points of interest
> To: "'NSRCA'" <nsrca-discussion at lists.nsrca.org>
> Date: Monday, October 19, 2009, 9:49 PM
> 
> 
> 
>  
>  
> 
>  
> Hi all,
>  
> Just a little topic diverter, for
> all us 'oilers'.
>  
> Some background. Generally in
> Aus, most people mix their own fuel as it is simply too cost
> prohibitive to use pre-mix. 99.9% use the Coolpower oils. We
> have the three types available; Blue (SV),
>  Red (LV) and Purple(MV).
>  
> I have just rebuilt 3 different
> YS motors,all running on different oils. Nitro content is
> 25-30% depending on motor and application, Nitro
> brand is VP. The  methanol was Spectro C
> analysed for
>  purity and water content ( perfect
> results)
>  
> I have found: ( your mileage may
> vary <VBG>)
>  
> The LV oil produces marginally (
> empirically tested) power, however significant corrosion and
> wear was found in the motors using this oil. Cam was
> badly worn also.
>  
> The standard Blue oil motor had
> by far the least wear, virtually no corrosion and only
> small expected, standard wear ( liner, bearing play and ring
> gaps. Cam was perfect)
>  
> The MV oil, which as expected,
> was somewhere in between the two.
>  
> Conclusion for my own future
> use:
>  
> I will cease to use the Heli oil
> in my motors as of now, unless I need to milk a motor for
> every last bit of power OR if I am happy to rebuild more
> often.
>  
> The MV does seem like a good
> compromise, but I'm happy with the Blue oil. Its the
> original, and in my opinion only, still the best
> general performing oils of all.
>  
> Also-IF any of you are actually
> still using the YS, here are a few other tips. I have two
> brand new 170's-one CDI and one Glow. Both motors had
> virtually NO oil in the cam area out of the box.
>  I would recommend that you open the cam cover and squirt
> it full of oil before you start these for the first time. I
> feel it helps and may just prevent undue cam
> wear.
>  
> I always strip, rework and
> Ultra sonically clean my motors before I run them-so I do
> this anyway, but for those that don't want to go to
> these extents-The oiling of the cam is easily
> done.
> Another little tip-lap the valves
> in. I just use one of those eraser tipped pencils,
> cyno'd to the valve, and then spin the pencil with some
> fine valve grinding paste on the seat. This works
>  a treat, every time.( obviously, disassemble the head
> first)
>  
> Now feel free to practice those
> snaps that we talked about ,with that little powerhouse
> of an engine <G>
>  
> Tom
>  
>  
>  
> 
> 
> 
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