dasteiner(at)bluewin.ch
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 Posted: Thu Sep 05, 2013 11:20 pm Post subject: AW: Re: Jeffco |
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Von Samsung Mobile gesendet
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Von: David Weaver <mortweaver(at)sbcglobal.net>
Datum: 06.09.2013 3:18 (GMT+01:00)
An: pulsar-list(at)matronics.com
Betreff: Re: Pulsar-List: Jeffco
Yes I have only used 100LL one time while on a long trip out to western Kansas from Illinois. I use 87 Octane with up to 10% ethanol. I currently have 343 hours on 912UL Rotax engine. At 5100 RPM cruise is 140 MPH and at 5500 RPM cruise is 150 MPH (tricycle gear/large wheel option and 145 lb pilot). Propeller is GSC controllable pitch hub with Warp Drive blades. The auto fuel burns very clean with no fouling of spark plugs or carb malfunction. As I mentioned earlier, where there is a transition between dissimilar materials, I would coat that area with a polysulfide fuel sealer and not count on Jeffco as it is brittle. The polysulfide material can be applied over Jeffco. Jeffco can not be applied over a polysulfide coating as it will crinkle and peal away. It is a good idea to periodically use an inspection mirror to inspect the areas inside the wing tank at the fuel filler ring and the aluminum vent tube for hair line cracks (if Jeffco is primary sealer in use).
Regards - Dave
From: Bernard Wilder <bernard.wilder2(at)gmail.com>
To: Pulsar Net <pulsar-list(at)matronics.com>
Sent: Thursday, September 5, 2013 3:58 PM
Subject: Re: Pulsar-List: Jeffco
Dave,
Have you been using gas with 10% ethenol ? ? ?
Bernie Wilder
On Thu, Sep 5, 2013 at 11:25 AM, David Weaver <mortweaver(at)sbcglobal.net> wrote:
| Quote: | My Pulsar XP wing tanks were resealed with Jeffco many years back after
removing the remanants of what was left over from the original sealer
shipped with the Aero Designs wing kit. There has been no evidence of
degradation of the Jeffco with the exception of the fuel filler transition
area from composite to aluminum filler ring. That area was treated with the
more flexible polysulfide close out plate sealer. The specs for Jeffco are
available on-line. It is an industrial tank sealer that is rated for even
acid exposure.
Dave Weaver N912GR
From: Bernard Wilder <bernard.wilder2(at)gmail.com>
To: Pulsar Net <pulsar-list(at)matronics.com>
Sent: Thursday, September 5, 2013 9:40 AM
Subject: Pulsar-List: Jeffco
<bernard.wilder2(at)gmail.com>
Asked Aircraft Spruce if Jeffco was impervious to ethenol.
Response:
I don't know. Will check with our
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