---------------------------------------------------------- Engines-List Digest Archive --- Total Messages Posted Mon 10/24/05: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:49 AM - Safety wire? (Grant Corriveau) 2. 12:12 PM - AOPA call to action on Washington, D.C., ADIZ (John Loram) 3. 09:32 PM - Starter not disengaging (HCRV6@comcast.net) 4. 09:59 PM - Re: Starter not disengaging (923te) ________________________________ Message 1 _____________________________________ Time: 06:49:11 AM PST US Subject: Engines-List: Safety wire? From: Grant Corriveau --> Engines-List message posted by: Grant Corriveau > Engines-List message posted by: Gary Casey > Some observations from a non-professional outside observer: > > Some aircraft bolts (not all by any means) have some sort of > retention device and others don't. Same is true in the automotive > world. ... Gary, Thanks -- that was a very helpful summary of basic principles involved. That's what I like to discover, so I can make better decisions in the many cases where there is no specific guidance. This arises often in the amateur-building process, especially with an auto-conversion engine. -- Grant Corriveau C-GHTF / HDS / CAM100 ________________________________ Message 2 _____________________________________ Time: 12:12:52 PM PST US Subject: Engines-List: AOPA call to action on Washington, D.C., ADIZ From: "John Loram" --> Engines-List message posted by: "John Loram" http://www.aopa.org/adizalert/ Take 15 minutes to make you voice heard! -john- ________________________________ Message 3 _____________________________________ Time: 09:32:01 PM PST US From: HCRV6@comcast.net Subject: Engines-List: Starter not disengaging INNOCENT GLOBAL 0.0000 1.0000 -4.4912 1.53 RCVD_NUMERIC_HELO Received: contains an IP address used for HELO --> Engines-List message posted by: HCRV6@comcast.net Hey guys, I should have guessed things were going too well. At 146 hours the Sky Tec starter pinion gear on my factory new (from Van's) O-360 A1A has started to hang up for a second or two on each engine start. I'd sure appreciate any insight anyone can provide as to what is causing this and what the fix is. -- Harry Crosby RV-6 N16CX, 146 hours Hey guys, I should have guessed things were going too well. At 146 hours the Sky Tec starter pinion gear on my factory new (from Van's) O-360 A1A has started to hang up for a second or two on each engine start. I'd sure appreciate any insight anyone can provide as to what is causing this and what the fix is. -- Harry Crosby RV-6 N16CX, 146 hours ________________________________ Message 4 _____________________________________ Time: 09:59:23 PM PST US From: "923te" <923te@cox.net> Subject: Re: Engines-List: Starter not disengaging --> Engines-List message posted by: "923te" <923te@cox.net> Here is a fix and an explanation from a Skytek person: Lots of folks with experimental aircraft use the solenoid on our starter as the only starter relay, running the push-button to the S terminal of our solenoid and removing the jumper we supply. This eliminates the 'after run'. The Sky-Tec permanent magnet starters like your 149-24LS act as generators while they spin down after you release the start switch. During this time, the flywheel spins the one-way clutch behind the pinion gear. The clutch prevents the engine from spinning the starter armature while it coasts to a stop. While the armature is still spinning and coasting down, the power it generated causes the engagement solenioid to hold in. When the armature spins down to a slow enough point, the solenoid releases and the pinion disengages from the ring. The hold-in time depends on the starter RPM and the friction in the starter, which probably becomes less as the starter gets used. This time ranges from unobservable to about 8 seconds, in our experience. This is normal operation and is not a problem.