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09-15-2019, 10:20 AM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,828
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Zenon Flash tube for Whelen Tip??
I have my Whelen HDACF system on the bench and apparently the tip strobes are no good. The plan is to get it working and sell it.
New ones (A610) from Whelen are $200+. Since we are experimental, I thought this might be a good place to experiment.
Has anyone used an COTS part for the bulb? The one below is the same spiral, voltage, and 50 J vs the 21J stated by the Whelen literature. It is $6.47
Comments?? Any experience?
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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09-15-2019, 03:18 PM
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Join Date: Jan 2006
Location: Tucson, AZ
Posts: 825
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Should work
Years ago when building my RV4 I bought a used Aero Flash strobe system. One of the domes and bulbs were broken. I replace the strobe bulb with one from Radio Shack. Made a cardboard form to match the existing bulb base. Cast the new bulb assembly in the base form with white silicone sealant (Home Depot). Took several days for the silicone to cure. Worked great.
If you sell the strobe system, disclose you replaced the bulb with a COTS bulb.
__________________
Dream it, Build it, Fly it
Paul Merems (EAA Tech Counselor, EAA Sheetmetal Workshop Instructor/Volunteer 12 yrs)
ExperimentalAero- HANGAR BANNERS
www.experimentalaero.com
RV-7A (Flying since 2010)/RV-4 (sold 1990)
Tucson, Arizona 85749
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09-16-2019, 06:52 PM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,828
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Thanks, Paul, it appears the company is in Israel, and will be in the mail for a while. It was the only source I could find.
I bought 3 just in case.  I was thinking about casting the same holder as you mentioned, good to know it will work.
Disclosure to new owner is certainly in order, I was thinking about running it for several one or two hr stints to check it out. Definitely experimental only, but may help others with the same problem. At least it can prove the power unit is good (or not)
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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09-01-2020, 06:02 PM
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Join Date: Jan 2007
Location: Bay Village, OH
Posts: 951
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Grrr
So I’m going to try to fit one of these replacements in my Whelen housing. One strobe dead tonight on preflight. Mfg date March of 2004, I bought them waaaaay in advance....or optimism. Only 136 hours of flight time. I can’t put $200 into a bulb. I’m going to start planning for the LED conversion with my condition inspection. For now, I just want flashy again. I’ll let everybody know if the project is easy or hard.
__________________
Rick
RV-9A N183RC/90432: tip-up, O320H2, Ellison, Dynon D180, CPi2, Sen GA, at KLPR
RV-8 83718, wing kit, tanks done, with a four year plus plan - on hold due to home move
2011-2021 VAF contributor
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09-01-2020, 06:10 PM
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Join Date: Oct 2019
Location: SoCal
Posts: 477
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I haven't bought anything from them, but here's the place the picture is from in the first post:
https://www.xenonflashtubes.com/
__________________
Ed
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09-01-2020, 07:01 PM
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Join Date: Jan 2007
Location: Bay Village, OH
Posts: 951
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Thanks
I went with the strobes and more, I’m hoping to not lose the weekend.
__________________
Rick
RV-9A N183RC/90432: tip-up, O320H2, Ellison, Dynon D180, CPi2, Sen GA, at KLPR
RV-8 83718, wing kit, tanks done, with a four year plus plan - on hold due to home move
2011-2021 VAF contributor
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09-01-2020, 08:50 PM
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Join Date: Jul 2009
Location: Mojave
Posts: 4,764
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The "automotive" strobes from whelen are plug and play (connector, not molded base) and work fine. Still expensive, but much better than the aviation product.
__________________
WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.
Michael Robinson
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Harmon Rocket II -SDS EFI
RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C
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09-02-2020, 06:09 AM
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Join Date: Aug 2008
Location: Lancaster, SC
Posts: 152
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Strobe Replacement
[quote=BillL;1373753]I have my Whelen HDACF system on the bench and apparently the tip strobes are no good. The plan is to get it working and sell it.
New ones (A610) from Whelen are $200+. Since we are experimental, I thought this might be a good place to experiment.
Has anyone used an COTS part for the bulb? The one below is the same spiral, voltage, and 50 J vs the 21J stated by the Whelen literature. It is $6.47
Comments?? Any experience?
[/QU
Please post your results when you get the tubes. Would be great to know!
Ed
__________________
Sonex/Corvair 2016 Finished, Sold 2020
RV-9A 2005 Purchased
IO-320 160 hp
Exempt but happily paid for 2021
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09-02-2020, 06:23 AM
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Join Date: Oct 2019
Location: SoCal
Posts: 477
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You may need a bigger capacitor for the bigger bulb.
Then it might slow down the charge time, causing a slower flash rate.
__________________
Ed
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