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Re: [FlyRotary] Re: Hushpower failures
Nice article, Dennis (and photos)
Anyone interested in looking at Dennis article in Van
Rvator - here is the link
Ed
Sent: Wednesday, August 04, 2010 5:48 PM
Subject: [FlyRotary] Re: Hushpower failures
Steve -
My pictures are on another computer and not easily
retrieved currently. The Van's RVaitor news letter had an article and good
pictures. Go to Van's web site and look at page 9 - 11 of the first issue
in 2010. The top left picture on page 10 shows the exhaust system and my
original intake. The top right picture is the new intake manifold I
installed in 2009.
Dennis H.
----- Original Message -----
Sent: Wednesday, August 04, 2010 1:43
AM
Subject: [FlyRotary] Re: Hushpower
failures
Dennis, do you have photos of your setup, particularly
of your intake?
Cheers
Steve Izett
Building Glasair SII RG
Renesis 4 Port RD1-C EC2 EM3
On 4/08/10 12:16 PM, "Dennis Havarlah"
<clouduster@austin.rr.com>
wrote:
My Hushpower
resonator ( short hushpower) is still going - 250 hours on Renesis and LOVE
IT!! Everyone that hears my fly by comments on how quiet the
plane is. About 10 hours ago I removed the muffler and removed the few
peices of the baffle still inside. I never saw any performancy
decrease due to blockage as it failed. Now it is only an enlarged
muffler shell in the exhaust system. My neighbors tell me it is
no louder and the tone of the exhaust is a little deeper.
My 4
inch dia. tangantial pipe (used to turn the exhaust 180 deg.) is still doing
fine with no signs of any failure. This is located foward (toward the
prop) and is fed by the factory exhaust maifold. This system combined
with the split side flange exhaust of the Renesis makes for a very easy to
control exhaust.
As
far as Renesis Horsepower goes - I have a Catto 76X88 porp and RD1-C PSRU on
my RV-7A - I pretty well match my neighbor"s RV-7A with a Lycoming 180
engine with dual electronic ignition.
The
following has been addressed before but I'll repeat it based on my
experience.
I use 0.5 to 0.7 oz of WalMart outboard oil and Marvel
mixed half and half per gallon of regular grade Mogas. Cost is
about $12.00/gal for the oil mixture. In cruise I use 8 - 9 gph
and at 0.6 oz/gal I would burn 213 gallons of Mogas for each gallon of oil.
Mogas is about $1.00 cheaper than 100 LL. With the oil cost
figures included I save $200 in fuel cost when I fly 213/9 = 23.6 hours.
My dual fuel pumps are in the cabin, foward of the seats on
the floor. I have never had any fuel vapor problems - even in Texas in
the summer.
Hope this helps some.
Dennis
Haverlah
Has
anyone had their hushpower muffler fail, and if so, how did they
fail?
Thanks,
Brian
Trubee
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