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I remember us having 2 different CB's for the two different coil banks..
if this is the case, swap the feeds to the breakers and see if the same, or different breaker, trips. This can indicate whether the CB is the problem or if it lies elsewhere.
Dave
Ed Anderson wrote:
Glad to hear about the progress, Chris. Sounds like you are moving in the right direction.
Interesting problem about the coil, Most of the time if a coil pops a circuit breaker due to operating load its naturally at the higher rpm where the coil draws more current.
Are you using stock Mazda coils or the LS1 or? What size is your circuit breaker? Are your coils on separate CB (recommended) and if so which coil is popping?
Ed
Ed Anderson
Rv-6A N494BW Rotary Powered
Matthews, NC
eanderson@carolina.rr.com
http://www.andersonee.com <http://www.andersonee.com/>
http://members.cox.net/rogersda/rotary/configs.htm#N494BW <http://members.cox.net/rogersda/rotary/configs.htm>
http://www.dmack.net/mazda/index.html
------------------------------------------------------------------------
*From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] *On Behalf Of *Christopher Barber
*Sent:* Monday, June 30, 2008 11:16 PM
*To:* Rotary motors in aircraft
*Subject:* [FlyRotary] Saga progress
Wow, apparently real life progress. I have had trouble starting the engine. I would seem as if the coils would just stop working. Well, they were. I had a bad wire at the coil switch. It is still hard to start but I just did a search of the of the achieves and will be reading those in a bit. The search on surging is proving very useful.
Ok, here is the problem though. A question for the more electrically savvy. When I get the engine to a low/very low idle I am tripping the coil circuit breaker. It does not seem to be a problem at mid idle to high RPM. It has been consistent. I don't even know where to start. Thoughts please.
I got it close to 6000 static today by advancing to full throttle, flattening out the prop and adjusting the mixture...couldn't hold the plane with full brake so I pulled back. This is on a newly built 2nd gen turbo block (currently w/o turbo) with a medium street port and a Mistral intake, Tracy's ECU, EM and 2.17 PSRU. The engine was built by me, but the street port was done by Mazdatrix.
The surging is being brought under control with tuning. It does seem that I have to hit the program button a few times to get it to actually recognize the change, but it is changing. I briefly tried auto tune, but it went from smooth to surging....don't know if I have it close enough for auto tune yet. Temperatures to reach my max, while sitting there on the ramp but it is taking a while. I am actually pretty happy with cooling right now compared to the past. Also, when shut down, the engine is just sitting there...no leaks, now weird hissing or moaning <g>. It is just off. Kewl.
All the best,
Chris
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