Can a master solenoid be mounted flat on a plate or does it have to be vertical for a reason?
I asked this question earlier but can't find were it went on as so if this is a double post please delete . Thanks
Can a master solenoid be mounted flat on a plate or does it have to be vertical for a reason?
I asked this question earlier but can't find were it went on as so if this is a double post please delete . Thanks
Harlan and Susan Payne
Flying FarmFox STI Kitfox N61HP
Rotax 915is, Airmaster prop.
https://www.youtube.com/@KitfoxPilot/videos
Harlan,
Needs to be mounted vertically; and, a good idea to go to the solenoid manufacturers documentation - depending on the manufacturer, orientation may be cap up or cap down.
If mounted sideways, the contactor operation may be intermittent as there is very little travel before the solenoid hits the stop inside.
Do a search on "relay failure" there is a contribution by three of us on the subject plus some photos of the guts of these things and why the orientation is important.
Last edited by Dave S; 06-26-2021 at 12:58 PM.
Dave S
Kitfox 7 Trigear (Flying since 2009)
912ULS Warp Drive
St Paul, MN
Thanks Dave. I searched before I asked but didn't find anything. Glad I asked because I had decided it would be ok laying down. I made a bracket to put it vertical, thanks for the info to keep me on the right track!
Harlan and Susan Payne
Flying FarmFox STI Kitfox N61HP
Rotax 915is, Airmaster prop.
https://www.youtube.com/@KitfoxPilot/videos
Dave, everything I read says to put a diode on the master and start solenoids but I can't find any supplied. I know very little about this other than where they go. Are these 5 watt diodes ok to use for that?
https://www.ebay.com/itm/26479237674...sAAOSwkrRfCVJy
Harlan and Susan Payne
Flying FarmFox STI Kitfox N61HP
Rotax 915is, Airmaster prop.
https://www.youtube.com/@KitfoxPilot/videos
Hi Harlan,
Weighing in here: the 12 V Zener you provided a link for would not be a good choice for the flyback diode on the solenoid. It would affect your electrical system and possibly burn out. Try something like a 1N4004 (instead of the 1N4148) in the diagram below.
-- Paul S
Model III SN910
582 IVO Med
The very common White-Rodgers type 70 or 71 should be mounted vertically with the”cap” down. There are other types/brands that may not have that recommendation or requirement.
John Evens
Arvada, CO
Kitfox SS7 N27JE
EAA Lifetime
Chap. 43 honorary Lifetime
The diode is recommended to protect the contacts on the switch that is used to control the solenoid. When the coil is de-energized & the magnetic field collapses, a high voltage “spike” can be induced that causes arcing at the switch contacts. An inductive load, like a relay coil, should ideally have a diode to protect the controlling switch contacts. Some solenoid relays will have one built in. A simple silicon diode of the proper voltage rating is what’s needed. The 4000 series are a good choice.
Last edited by jrevens; 06-26-2021 at 05:28 PM.
Thanks again for all your help guys!
Harlan and Susan Payne
Flying FarmFox STI Kitfox N61HP
Rotax 915is, Airmaster prop.
https://www.youtube.com/@KitfoxPilot/videos
Harlan and Susan Payne
Flying FarmFox STI Kitfox N61HP
Rotax 915is, Airmaster prop.
https://www.youtube.com/@KitfoxPilot/videos
Harlan they should of came with your vertical power.
Dustin Dickerson
Building 7ss STI x 2
Oratex
29" shock monster
EP912STI 155hp
Garmin
N33TF......FLYING!
N53TF......FLYING!