echristley(at)att.net
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 Posted: Sun Aug 26, 2018 8:54 am Post subject: AeroElectric-List Digest: 24 Msgs - 08/23/18 |
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| Quote: | > The Dynamo will not charge while taxiing and if you have any load at all your battery could be down when you try to leave.
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This has a been an accepted requirement since I've known of the Aeroelectric list, but I've always questioned its importance. On the one hand we're demanding the the battery be fully topped off at the departure end of the runway, and on the other we demand that the battery be of sufficient capacity to outlast the fuel in the tanks. If starting the engine depletes the engine so much that the battery is crippled by it, the I ask the question, "Do you really want to fly a plane that either has an engine that doesn't want to start or one with a battery that is depleted by a normal start?"
If your low voltage light or other charge indicator doesn't show the charger working during run-up are you going to take off anyway? If the indicator shows the charger has gone south on climb out, didn't you plan for enough battery to carry you to the destination anyway? Well, now the destination should be the one directly below. If the plan was for the battery to carry the electron pushing load for hours, why would the new "fly the few minutes of the pattern and land now" plan cause any concern even with the slight depletion due to starting?
Is the concern better spent elsewhere?
On Friday, August 24, 2018 2:47 PM, Bobby Paulk <bobbypaulk(at)comcast.net> wrote:
--> AeroElectric-List message posted by: Bobby Paulk <bobbypaulk(at)comcast.net (bobbypaulk(at)comcast.net)>
Guys
The Jabiru engine uses a
Kubota RP201-53710 regulator.
I got rid of the Dynamo and regulator and installed a 40 amp. alternator.
The Dynamo will not charge while taxiing and if you have any load at all your battery could be down when you try to leave. The new Honda ignition coils are far better than the originals and will help with starting also.
Bobby
Jabiru 3300
302 hours
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