fwiw, up here in the frozen tundra when spring comes with the warmer
weather and the stations are slow to switch their premium tanks over due to
lack of volume, we also see lots of running issues and vapor lock with the
"winter gas" formulation.
Cheers,
PeteZ
On Tue, Feb 14, 2023 at 9:50 PM n7188u <chmgarb@gmail.com> wrote:
>
> All very good info. Thanks. A couple of comments:
>
> - I have balanced carbs at 3500 and agree found it to work well. But there
> is so much info out there. Some say better at lower RPM, some at higher.
> And since Rotax doesn't say, well, here we are. I tried at the lower range
> this time.
>
> - I saw your O2 setup a while back Area-51. And I like it. But heard that
> having the sensor too close to the pipe exit can cause outside air to mix
> with the exhaust and produce erroneous readings. But your solution is
> certainly attractive. Who sells that short adapter to mount the O2 sensor
> and coupling hoses?
>
> - The info from dmac7 is very interesting. These issues I am having
> started this winter (well, if you can call it that in Florida). But we do
> get winter fuel here too. Per Lockwood, he says winter fuels are terrible
> for our use. Maybe that is the culprit and the solution is to retune carbs
> during winter. I have to do the same on my 503 powered Kolb (24 years old
> now) but since that is second nature and expected in the 2-stroker I never
> had issues.
>
> I will fly with this new tuning setup and will report back at some time in
> the future.
>
> Chris
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=510174#510174
>
>
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