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Starting an RV-6 with a Lycoming O-320

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genie(at)swissmail.org
Guest

Posted: Tue Jun 10, 2014 9:18 am Post subject: Starting an RV-6 with a Lycoming O-320

For several months my RV-6 has experienced starting problems. At first 

go the engine would hardly turn as there did not seem to be enough power 

from the starter motor. After repeated attempts things would 

progressively improve until there was enough power to start the engine. 

Since the end of last month the starter motor has simply not been able 

to provide enough power to start my engine.



I removed the starter motor and had it tested. It jumped to life when 

exposed to enough voltage. Therefore this was apparently not the problem.



Measurements initially seemed to indicate that the battery was OK. 

However, later it appeared that the battery could not provide enough 

tension. I removed it and measured it. It provides almost 11.7 V at 

present. I reckon that the battery is, if not the only problem, then one 

of the problems.



A fellow aircraft owner told me that he believes that the problem is 

with the relay. That is why, according to him, in the past I initially 

had problems in starting but after several attempts I succeeded. Could 

this in your opinion be the case? Does anyone by chance know where can I 

find a replacement relay, which companies make suitable relays and what 

their part numbers are?



As for my battery, it is an Odyssey PC 680 by Enersys. When in the 

hangar it is always kept under tension by a battery charger. Is this 

battery the optimal choice for a Lycoming O-320 powered RV-6 or RV-6A? 

Do you know whether any other batteries would be just as good or better? 

I have found sources for such a battery.



Thanks.



George Nielsen

RV-6 PH-XGN

The Hague, the Netherlands



P.S. I am sending this on both the RV-6 and Lycoming lists. Please 

excuse me if you receive the same message twice.

- The Matronics RV6-List Email Forum -

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recapen(at)earthlink.net
Guest

Posted: Tue Jun 10, 2014 9:27 am Post subject: Starting an RV-6 with a Lycoming O-320

I have the same battery in my IO360B1F6 powered RV6A with a firewall mounted relay.

Make sure you have a good ground strap from the engine and a good ground cable to the battery from the strap.

Make sure that as few items as possible are drawing electricity when you try to start.



--

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HCRV6(at)comcast.net
Guest

Posted: Tue Jun 10, 2014 10:55 am Post subject: Starting an RV-6 with a Lycoming O-320

I have the same battery in my RV-6 with O-360 and have no problems starting in warm weather.  In cold weather I keep the battery on trickle charge and use



pre heat when it is really cold (by Cailifornia standards).  I suspect that you have a poor ground (power return) somewhere between the starter and battery.



Harry Crosby



From: "George Nielsen" <genie(at)swissmail.org>

To: rv6-list(at)matronics.com

Sent: Tuesday, June 10, 2014 10:18:19 AM

Subject: Starting an RV-6 with a Lycoming O-320

--> RV6-List message posted by: George Nielsen <genie(at)swissmail.org>

For several months my RV-6 has experienced starting problems. At first 

go the engine would hardly turn as there did not seem to be enough power 

from the starter motor. After repeated attempts things would 

progressively improve until there was enough power to start the engine. 

Since the end of last month the starter motor has simply not been able 

to provide enough power to start my engine.

I removed the starter motor and had it tested. It jumped to life when 

exposed to enough voltage. Therefore this was apparently not the problem.

Measurements initially seemed to indicate that the battery was OK. 

However, later it appeared that the battery could not provide enough 

tension. I removed it and measured it. It provides almost 11.7 V at 

present. I reckon that the battery is, if not the only problem, then one 

of the problems.

A fellow aircraft owner told me that he believes that the problem is 

with the relay. That is why, according to him, in the past I initially 

had problems in starting but after several attempts I succeeded. Could 

this in your opinion be the case? Does anyone by chance know where can I 

find a replacement relay, which companies make suitable relays and what 

their part numbers are?

As for my battery, it is an Odyssey PC 680 by Enersys. When in the 

hangar it is always kept under tension by a battery charger. Is this 

battery the optimal choice for a Lycoming O-320 powered RV-6 or RV-6A? 

Do you know whether any other batteries would be just as good or better? 

I have found sources for such a battery.

Thanks.

George Nielsen

RV-6 PH-XGN

The Hague, the Netherlands

P.S. I am sending this on both the RV-6 and Lycoming lists. Please 

excuse me if you receive the same m=             - List Contribution Web Site ;                     &nb======================



 [quote][b]

- The Matronics RV6-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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tlaw(at)northwestel.net
Guest

Posted: Tue Jun 10, 2014 9:07 pm Post subject: Starting an RV-6 with a Lycoming O-320

I also have the same battery in my RV-6A with an 0-320 Lycoming........... working fine for 9 years.  

Has a voltage drop check been done?  Connect a volt meter from the battery positive to the starter positive and watch while cranking...... there should not be much more than 1/2 to 3/4 volt and if much more move the meter connection to determine exactly where the excessive loss is...... in the relay or another connection.  Then do the same with the grounded side... from the Battery negative to the starter body.  There should be less loss on the grounded side as there is no relay.  Use an analogue volt meter to get a better reading.

Tom Law



---

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