RCU Forums - View Single Post - RCS 180 problem when start warm

01-16-2006 | 03:17 PM

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nonstoprc

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From: Central, TX

RE: RCS 180 problem when start warm

Hi Mike,

I did some additional testing and found the difficult-to-start problem can be reproduced even when the engine is cold, provided that the ignition battery's voltage is at about 4.8v (fully charged and then discharged with a Triton charger at 0.6A for about 20 minutes). This pretty much simulated ignition battery's state (actually 2 flights, fully throttle). The battery was capable of deliverying [email protected] for another 40 minutes. I also compute the max voltage drop caused by internal resistence (Sanyo KR 1100AAU, 19.0mΩ): 19X4X0.6A=0.0456 v. Looks like this should not drop the working voltage below 4.5v (the min specified by the instruction). Sounds like the iginition module is at the fault?

I've also played with H and L needle setting (not much help). The "air" gap bwt the firewall and the carb is 1".

Thanks again. --QC

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