Matronics Email Lists Forum Index Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
 
 Get Email Distribution Too!Get Email Distribution Too!    FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Oil Pressure warning light and hobbs driver?

 
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> AeroElectric-List
View previous topic :: View next topic  
Author Message
nuckollsr(at)cox.net
Guest





PostPosted: Thu Jan 12, 2006 4:29 am    Post subject: Oil Pressure warning light and hobbs driver? Reply with quote

At 06:34 AM 1/12/2006 +0000, you wrote:

Quote:


I have a Rotax 914 powering our Europa XS Monowheel. The oil pressure
sender changes from 0 ohms to 200 ohms.

Does any one make a device that that will turn on a light when oil
pressure is low, and turn on a electric hobbs when oil pressure is up?

Or a kit or plans?

Is your engine running? You need to know the range of votlages
that appear the sensor terminal with engine stopped and engine
running. A circuit like our LV Monitor can be modified to
watch this voltage and produce the light action you're seeking.
It could probably be done with one of the boards we already
have.

Bob . . .


- The Matronics AeroElectric-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:

http://www.matronics.com/Navigator?AeroElectric-List
Back to top
rparigor(at)SUFFOLK.LIB.N
Guest





PostPosted: Thu Jan 12, 2006 6:52 am    Post subject: Oil Pressure warning light and hobbs driver? Reply with quote

Hello Bob

Engine not running yet.

Anyone out there with a Rotax 914 (or a 912 or 912S) know the voltage at
the pressure sender when motor is off, and when at idle?

Sounds to me that this is a desirable product.

Thx.
Ron Parigoris

A circuit like our LV Monitor can be modified to
Quote:
watch this voltage and produce the light action you're seeking.
It could probably be done with one of the boards we already
have.

Bob . . .















--


- The Matronics AeroElectric-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:

http://www.matronics.com/Navigator?AeroElectric-List
Back to top
tonyplane(at)bellsouth.ne
Guest





PostPosted: Fri Jan 13, 2006 8:39 am    Post subject: Oil Pressure warning light and hobbs driver? Reply with quote

I may be wrong, but I believe the Rotac has a VDO Oil Pressure sender
whcih can be bought with two sender terminals - one terminal has an off/on
switch and the other has a variable resistor.
This is how I did it on the Jab 3000A, which came with two pick-ups on its
VDO sender.
The pickup labled WK on the VDO sender stands for warning contact, aka
"idiot light" pickup. This contact is normally closed with no oil pressure
and opens at about 8 psi. (The other pick up "feeds" the oil pressure
guage)

I installed a Radio Shcck PN 275-248 relay "velcroed" on the top of the
Hobbs (the relay is very small and rated for 10A at 24V). I wired the VDO
WK terminal to the NO coil pick up of the relay and the other relay coil
pickup wired to the master bus for its 12V pickup when the master is turned
on. This 12V wire is also spliced to feed into the COM of the relay. I then
wired the relay such that a wire from the NO on the relay fed to the + lead
of a red 12 V 1/4 in dia Radio Shack LED installed on the panel (the - lead
of the LED goes to ground). This LED lights up with the master switch ON
when there is zero or less than about 8 psi pressure. Another wire feeds
into the + of the Hobbs from the NC pickup of the relay. Another wire goes
from the - of the Hobbs to ground.

When there is Oil Press, the WK contact of the VDO opens and then the relay
switches the voltage/current to the Hobbs.

In summary. Zero or less than about 8 psi gives "idiot light" on panel.
On engine start, "idiot light" goes out (unless you have a problem) and
Hobbs starts running.

The relay and LED are very inexpensive. If you are unsure how to wire
them, study the diagram on the relay package, wire everything up on the
bench, and play with the combination.

Tony Graziano, Buchanan, Tn
Zodiac 601XL N493TG
-------------------
AeroElectric-List message posted by: <rparigor(at)suffolk.lib.ny.us>
Quote:

I have a Rotax 914 powering our Europa XS Monowheel. The oil pressure
sender changes from 0 ohms to 200 ohms.

Does any one make a device that that will turn on a light when oil
pressure is low, and turn on a electric hobbs when oil pressure is up?

Or a kit or plans?


- The Matronics AeroElectric-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:

http://www.matronics.com/Navigator?AeroElectric-List
Back to top
craig(at)craigandjean.com
Guest





PostPosted: Fri Jan 13, 2006 1:11 pm    Post subject: Oil Pressure warning light and hobbs driver? Reply with quote

After a little googling I think the part number for the VDO dual sender is
VDO-360006, Here is at least one place to buy it for 30 bucks:

http://www.mooreparts.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=VD
O360006&Category_Code=GGAUGTS

Or as a tiny url:

http://tinyurl.com/7jkkh

-- Craig

--


- The Matronics AeroElectric-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:

http://www.matronics.com/Navigator?AeroElectric-List
Back to top
craig(at)craigandjean.com
Guest





PostPosted: Fri Jan 13, 2006 1:24 pm    Post subject: Oil Pressure warning light and hobbs driver? Reply with quote

Summit Racing also has the VDO dual sender for $26:

http://tinyurl.com/c2mfw

-- Craig

--


- The Matronics AeroElectric-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:

http://www.matronics.com/Navigator?AeroElectric-List
Back to top
Display posts from previous:   
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> AeroElectric-List All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group