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  #171  
Old 02-21-2014, 02:23 PM
BillFear BillFear is offline
 
Join Date: Oct 2007
Location: Sherrills Ford, NC (Lake norman area)
Posts: 432
Default The development pace is amazing

Quote:
Originally Posted by rocketbob View Post
Wonder what one of these would do with the right heatsink and reflector:

http://www.ebay.com/itm/50W-Watt-Whi...item25786888c7
I was just 2 years ago that I was excited about my 580LM MR16 LEDs in the wingtips. Now it is moving so fast past 11k and 13k and beyond, we may need to start thinking about damage to the eyes of other pilots and people on the ground!
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Lake Norman, NC (14A)
RV7a N705RP (no longer own)
Contribution in for 2017, money well spent
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  #172  
Old 02-21-2014, 03:58 PM
Bavafa Bavafa is offline
 
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 3,351
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Quote:
Originally Posted by Toobuilder View Post
According to the specs, the OD on the lens is 78mm (about 3")... Is this about right?
Yes, they are just a bit larger than 3" about 3.11" and I could not detect any RF in any range of the radio. Again, it was not installed permanently and I am planning on installing them in the wingtips by mid next week when the second one arrives.

I will post pictures when I get them installed and will report back about the RF or any other issues that I may run into.
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Mehrdad
N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - Flying
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  #173  
Old 02-24-2014, 01:06 PM
Bavafa Bavafa is offline
 
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 3,351
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I received my second 11000LM Trustfire on Saturday and installed it. The second one looked identical to the first one but was creating some RF noise on the ground. I have found if either positive or negative leads are not firmly connected, it make some noise. Proceeded with the final installation and put a bunch of twist on the +/- lead. I did a few short flights to test them. On the ground and within 3-4K AGL, I cannot detect any noise at all but when I was higher up (10K AGL) there was definitely lots of noise in the radio. I could see my rx on the 430 go on that corresponded to the noise so I am wondering if the auto squelch on the 430 is more sensitive that picks up the noise. It was also effecting VOR receive.

Any idea as why the noise is detectable higher up.

Good news is that the landing lights will primarily be used closer to the ground, bad news is that there is plenty of noise put out by these lights.

I have pix of the light and installation if anyone is interested, let me know and I will e-mail them out.
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Mehrdad
N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - Flying
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  #174  
Old 02-24-2014, 01:22 PM
Toobuilder's Avatar
Toobuilder Toobuilder is offline
 
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Location: Mojave
Posts: 4,652
Default

Are you using a ferrite, cap, or any other type of noise trap beyond the twisted power leads?

You should post your pics here.

As an aside, I washed the Rocket last night and had to go fly to "dry it off". On initial taxi, the lights broke squelch on the radio, but by the time I completed my runup they were quiet again. Don't know what the deal is there.
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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
______________
Harmon Rocket II -SDS EFI
RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C
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  #175  
Old 02-24-2014, 02:05 PM
BillFear BillFear is offline
 
Join Date: Oct 2007
Location: Sherrills Ford, NC (Lake norman area)
Posts: 432
Default please email photos

Quote:
Originally Posted by Bavafa View Post
I received my second 11000LM Trustfire on Saturday and installed it. The second one looked identical to the first one but was creating some RF noise on the ground. I have found if either positive or negative leads are not firmly connected, it make some noise. Proceeded with the final installation and put a bunch of twist on the +/- lead. I did a few short flights to test them. On the ground and within 3-4K AGL, I cannot detect any noise at all but when I was higher up (10K AGL) there was definitely lots of noise in the radio. I could see my rx on the 430 go on that corresponded to the noise so I am wondering if the auto squelch on the 430 is more sensitive that picks up the noise. It was also effecting VOR receive.

Any idea as why the noise is detectable higher up.

Good news is that the landing lights will primarily be used closer to the ground, bad news is that there is plenty of noise put out by these lights.

I have pix of the light and installation if anyone is interested, let me know and I will e-mail them out.
Please email to kimfear@embarqmail.com
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Lake Norman, NC (14A)
RV7a N705RP (no longer own)
Contribution in for 2017, money well spent
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  #176  
Old 02-24-2014, 04:38 PM
Bavafa Bavafa is offline
 
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 3,351
Default

Quote:
Originally Posted by Toobuilder View Post
Are you using a ferrite, cap, or any other type of noise trap beyond the twisted power leads?

You should post your pics here.

As an aside, I washed the Rocket last night and had to go fly to "dry it off". On initial taxi, the lights broke squelch on the radio, but by the time I completed my runup they were quiet again. Don't know what the deal is there.
I played with a few ferrite that I had at hand and since there was no noise on the ground, I did not know the effect of them. I have put a couple of on each side just for the heck of it.

Here are some pix that I had from my iphone.

as a reference, this is what I am changing it from

DSC_6141 by bavafa1, on Flickr

This is what you see on the inside of these lights

LL2 by bavafa1, on Flickr

So, I took the middle connection out and drilled a hole in the middle of it for a #6 screw for my positive lead.

photo by bavafa1, on Flickr

The second one looked to have the spring connection cut too short and I could detect some buzzing noise on the ground. I added a bit of spring to it to make sure a solid connection on this part.

LL4 by bavafa1, on Flickr

This is how I am mounting it, simple and the same as pervious light which has three longer #8 screw with a spring in between the bracket and the back of the wingtip. The screw/spring is not showing here and the bracket is mounted in between the head and the battery holding piece which has been shortent.

LL3 by bavafa1, on Flickr

Here it is mounted and it is somewhat adjustable with those three screws.


LL6 by bavafa1, on Flickr
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N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - Flying
Dues paid

Last edited by Bavafa : 02-24-2014 at 04:41 PM.
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  #177  
Old 02-24-2014, 05:09 PM
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Don Patterson Don Patterson is offline
 
Join Date: Jun 2005
Location: South East Wisconsin
Posts: 104
Default LED's

Mehrdad,

Thanks for sharing your project with everyone. Are you using ship power to run these lights?

Don
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RV-7A Slow Build, IO-360, Hartzell constant speed blended airfoil. CFII
First Flight Oct 6, 2010
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  #178  
Old 02-24-2014, 05:13 PM
Bavafa Bavafa is offline
 
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 3,351
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Quote:
Originally Posted by Don Patterson View Post
Mehrdad,

Thanks for sharing your project with everyone. Are you using ship power to run these lights?

Don
Correct, my buss voltage is at 14.1v.

I am going to run another test flight tonight to see if I can gather more data and see what AGL altitude I see the effect of it in my radio or nav.
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N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - Flying
Dues paid
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  #179  
Old 03-02-2014, 11:06 PM
tikicarver tikicarver is offline
 
Join Date: Aug 2008
Location: Tehachapi,CA
Posts: 131
Default

Did you get a chance to do another flight test? How was the noise?
I Ordered some ferrites to play with, want to see what they do to the noise on the bus while w watching the signal on a scope.
Also getting a better quality driver to see if it has the same problem.
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  #180  
Old 03-03-2014, 06:41 AM
Toobuilder's Avatar
Toobuilder Toobuilder is offline
 
Join Date: Jul 2009
Location: Mojave
Posts: 4,652
Default

Thanks for the update.

I have both sides running and am happy with their output and the multi mode functions. The new side picks up some noise however, and that's proving to be a problem. It looks like it is just one unit, but I have even swapped it out with a spare and the noise continues. It's weird, I can run 3 lamps in silence, but as soon as I add that 4th, it goes haywire. Using a handheld radio confirms that the noise is coming from the unit itself, rather than throwing it into the wiring.
__________________
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
______________
Harmon Rocket II -SDS EFI
RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C
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