REFLECTOR: starter trouble

[Lou Stedman]

I agree Brian but there is very little drop across the solenoids. I am 
thinking wire connectors.

Lou Stedman
Velocity N7044Q
Olean, NY
----- Original Message ----- 
From: "Brian Michalk" <michalk at awpi.com>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Sent: Wednesday, October 08, 2008 3:41 PM
Subject: Re: REFLECTOR: starter trouble


> Batt- to engine block: .6v
> That's probably the best case scenario for voltage drop with the current
> for that test.
> Measure from Batt+ to starter+.  From your data, that number should be
> close to 3.4v.
> Try to get that 3.4v drop as close as possible to your ideal .6 volt drop.
>
> Your ground return probably has two connections, and one wire.   Battery
> to wire connection, and wire to engine connection.  That's close to the
> ideal.
> Your positive side has more connections: batt-wire-solenoid,
> solenoid-wire-starter.  Four connections, two wires, and the wire length
> is probably longer.  From your data, it looks like you need to look at
> the batt to solenoid section.
>
> Try minimizing your voltage drops.
>
> Lou Stedman wrote:
>> Well I finally ran all of the tests on my starting system to find out
>> why my started is having so much trouble turning over this engine. As
>> I discussed before, I have a IO-360 on my VEL. My starter is a SkyTec
>> LS. When I hold my key to start the starter will begin to turn , then
>> hesitate and I let off on the key. Eventfully it will turn over. When
>> it does it spins the prop fine and the engine starts at once. I
>> downloaded the troubleshooting guide that SkyTec has and I wanted to
>> share my findings. All of the voltage readings are taken when the
>> started begins to loge down.
>>
>> 1.Voltage from plus and minus posts of battery while in failure
>> mode           9.9 volts
>> 2. voltage from ground on engine and + post of
>> starter                                     5.9 volts
>> 3. voltage from power in of master
>> solenoid                                                      8.0 volts
>> voltage from out side of master
>> solenoid                                                       8.0 volts
>> voltage from power in of starter
>> solenoid                                                       8.0 volts
>> Voltage from power out side of starter
>> solenoid                                           8.0 volts
>> 4. Voltage from minus side of battery to engine
>> block                                  0.6 volts
>> 5. Voltage at battery before starter
>> engage                                                   13.2 volts
>>
>> Things I have tied:
>>
>> Removed and cleaned all connections.                           Results: 0
>> Replaced my existing battery (Interstate 462 C.A.)
>> Installed new Power Sonic Battery PS12400 (40AH, 435 C.A.) Results: 0
>> Starter was returned to SkyTec for new housing and check.
>> Results: OK
>>
>> My next step is to replace all of my connections with new copper
>> connectors and solder them on.
>>
>> Your input is greatly appreciated.
>>
>>
>> Lou Stedman
>> Velocity N7044Q
>> Olean, NY
>> ------------------------------------------------------------------------
>>
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