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Date: Tue, 5 May 2009 19:38:39 -0600
From: Bob White <bob@bob-white.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: finetuning2 (slightly off-subject)
Message-Id: <20090505193839.858e91d8.bob@bob-white.com>
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Hi Greg,

That's probably me that you are thinking about for the wiring
harnesses.  I think I made a 20B cable, but can't find the details at
the moment.  I've made them for V8's and 4 cylinder piston engines
also.  The cost depends a lot on how much wire I need to use.  Tefzel
runs 10 to 20 cents/ft.  I have a copy of the EC2 20B Rev 2 manual
dated November 15, 2007.  Based on that, the cost would be about the
same as the 13B if you splice the common coil and injector connections
at the coil and injector ends.  A little more if I  double the leads
from the EC2.  I would recommend doing it this way to make the cabling
more straightforward.   EC3's are about the same as EC2's also from the
cable making perspective, the main difference is the use of a 25 and 15
pin connector for the EC3 instead of a 37 pin connector for the EC2.

If you go to my site at http://roblinstores.com/ and fill out the
lengths you need for the 13B cable, you can get a pretty good idea of
the cost.  Put in double the length you need for injector and coil
leads for the individual lead option.  That will give a pretty good
estimate.

Let me know if I can be of any further assistance.

Bob W.

On Tue, 5 May 2009 18:06:53 -0700
"Greg Ward" <gregw@onestopdesign.biz> wrote:

> Hey Tracy (and others)
> Setting up for engine first run dyno (finally).  Couple of things.  Is your friend who makes wiring harnesses making them for the 20B/Lancair combo?  Going to test the water and oil systems for pressure.  30 pounds on water, and 100 pounds on oil?
> Greg Ward
> Lancair 20B N178RG making progress......
>   ----- Original Message ----- 
>   From: Tracy Crook 
>   To: Rotary motors in aircraft 
>   Sent: Tuesday, May 05, 2009 7:04 AM
>   Subject: [FlyRotary] Re: finetuning2
> 
> 
>   66mm is not oversize so I'm surprised with no increase in power after 2/3 throttle.   Never hesitate to play with the mixture control when testing.  It is the fastest way to educate yourself on the effects of mixture on performance, fuel burn, EGT curve, etc.  You can't hurt a normally aspirated 13B with mixture (assuming ignition timing in the ballpark) so there's nothing to loose either.
> 
>   If that top speed was in IAS at 8500 you're not doing too bad anyway.
> 
>   Trace
> 
> 
>   On Mon, May 4, 2009 at 11:16 PM, Don Wallker <drwalker@gbis.com> wrote:
> 
>     Tracy,
>     66 mm ford mustang throttle body, I believe suggested by you.  To busy flying to notice all the numbers.  Mostly concentrating on flying and temps.  Alt 8500 ft, 40 Oat, No idea about manifold pressure.  Mixture set at mid range, but not really looked at.  We have had a lot of weather here the last few days, but is looking better toward the end of the week.  I got the diagram and printed it and realize it is a fix, not a solution.  I'll get to the airport tomorrow and draw a diagram of my electrical system, with lengths, positioning, etc. I've never tried running without the main buss off.  I'll run it and see if there is a differance with only the Essential buss on.  Thanks for all the thoughts, all of you.
> 
>     Don
> 
>     --
>     Homepage:  http://www.flyrotary.com/
>     Archive and UnSub:   http://mail.lancaironline.net:81/lists/flyrotary/List.html
> 
> 
> 


-- 
N93BD - Rotary Powered BD-4 - http://www.bob-white.com
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Cables for your rotary installation - http://roblinstores.com/