BeechTalk - BT

Username Protected · **Posted:** 23 Jan 2016, 04:47

Username Protected wrote:

- Even WITHOUT a battery the engine will be windmilling

Engine is feathered. Won't windmill.

Air start is either unfeathering accumulator to flatten the blades so it does windmill (if so equipped, many are not), or electric starter to rotate the engine.

Mike C.

Username Protected · **Posted:** 23 Jan 2016, 13:36

Username Protected wrote:

The OP never indicated whether the prop did NOT turn wit the starter engaged.

The prop didn't budge at all while engaging the starter. After a new battery, all is well. I went to altitude and shut down each engine in succession and each started back up just fine.

Username Protected · **Posted:** 23 Jan 2016, 14:15

ken - That would suggest that there is a problem wit the charging system. There should be plenty of amp available to turn the dead engine over despite the battery.

Username Protected · **Posted:** 23 Jan 2016, 21:30

Username Protected wrote:

That would suggest that there is a problem wit the charging system. There should be plenty of amp available to turn the dead engine over despite the battery.

I've been told the charging system checks out fine.

Username Protected · **Posted:** 24 Jan 2016, 12:57

The charging system will keep the battery topped off and will help crank. But cranking
a feathered engine will take a lot more current than the alternator can provide. That
peak current is supplied by the battery provided it's up to the task.

BH

Username Protected · **Posted:** 24 Jan 2016, 13:06

Username Protected wrote:

The charging system will keep the battery topped off and will help crank. But cranking a feathered engine will take a lot more current than the alternator can provide. That peak current is supplied by the battery provided it's up to the task.

That's exactly what my A&P/IA told me, thanks for confirming it.

Username Protected · **Posted:** 24 Jan 2016, 15:38

Username Protected wrote:

That peak current is supplied by the battery provided it's up to the task.

But it was up to the task for initially starting the engine on the ground, when it had sat for a while and not been charged recently. Then, once airborne, and having been on charge for a good time, it can't do it?

Something still doesn't feel right about this to me. It would not surprise me if the true explanation is something else, like a loose connection that was collaterally solved with the battery swap.

Mike C.

Username Protected · **Posted:** 24 Jan 2016, 15:43

Or an intermittent short inside the battery.

Username Protected · **Posted:** 06 Mar 2016, 21:23

Username Protected wrote:

Anyone that wants to come out to Tucson, I'll put you in the left seat and let you see for yourself how quiet it is, how much fuel it burns and what the TAS is at various altitudes. And I'll even sign your logbook as dual received. I'll show you my last annual bill ($3,224.80) and my insurance bill ($2,507.00) which was with zero time make & model. I anticipate a significant reduction in the insurance premium this year as I will have over 100 hours M&M. [I have flown it 93 hours in the last 10 months]

Update: I've had three pilots so far take me up on the offer to fly the P337. Also, my renewal insurance will be $1,869 so about a 25% drop going from 0 make and model to 115 hours M&M.

P337 Single Engine