HOME | ABOUT | FORUM | FILES | ARTICLES | MULTIPLAYER | FAQ | STORE | GALLERY
Terms of use • Privacy statement  
 


» Welcome Guest
[ Log In :: Register ]

 

[ Track this topic :: Email this topic :: Print this topic ]

Topic: Catching fire< Next Oldest | Next Newest >
LouP
(HC749LO)
Offline





Group: Member
Posts: 204
Joined: May 2009
Posted: April 11 2017,01:18

Hi Guys,

Hoping someone has a good suggestion.  I've owned the dodosim 206 for years now and am very familiar with it's operating procedure.  I am having an issue lately where all of a sudden, every time I go through the start-up cycle my engine catches fire right around 14% just as I am getting ready to snap the throttle open and closed.  I serviced the heli many times and started out on the active runway to eliminate any possible problem with the wind.  This issue is new all of a sudden and was wondering if anyone else had this happen and how they corrected it.  I am going to recalibrate my throttle again to make sure that is not the problem but it's in idle lock so I am having my doubts that will fix it.  Any ideas are welcome.

Thanks,
LouP
Back to top
Profile PM 
Rogue Trooper
(HC020RO)
Offline





Group: Student Pilot
Posts: 72
Joined: May 2007
Posted: April 11 2017,03:31

Hey Lou. I'm not sure if this is too obvious but as you say it catches fire before you snap the throttle open is there a chance the throttle axis has been inverted? My only other suggestion is to re-calibrate the axis with the screen/tool tips on so you can see at what % the throttle idle sits at and play with it till you get what your looking for.
Good luck,
Stuart  :)
Back to top
Profile PM AOL 
Bluebottle
(HC154BL)
Offline





Group: Certified Pilot
Posts: 3336
Joined: Jan. 2004
Posted: April 11 2017,07:29

Most issues are due to hardware calibration or conflicting assignments.

As Stuart said, if your throttle (mixture) axis is inverted then as soon as it moves the slightest amount the sim will pick up its position and jump from 0 to 100%
(The sim assumes all axes are zero, they are invisible until they move )
This is the most likely issue if the fuel spikes with tiny motions or as you take hold of it.

If it jumps when a larger positive input is given then it could be a dirty pot in the controller


--------------
Mark Adams     U.K.    Hovercontrol Certified Pilot

Bluebottle: Flying insect with unsavoury habits,
incapable of flying in a straight line, often lands inverted.
Back to top
Profile PM 
LouP
(HC749LO)
Offline





Group: Member
Posts: 204
Joined: May 2009
Posted: April 11 2017,23:45

Well I recalibrated and it started.  I noticed that the throttle was jumping around a little without me even touching it.  Not sure what to do about right now.  At least it started. :-)

LouP
Back to top
Profile PM 
Bluebottle
(HC154BL)
Offline





Group: Certified Pilot
Posts: 3336
Joined: Jan. 2004
Posted: April 12 2017,08:51

In other aircraft you could probably get away with a jittery throttle but in the real world it is an emergency situation - and that is the same for Dodosim products.

Your throttle might have reached the end of its life.
I'm not an electrician but check all the cables and connections. If the potentiometer or sensor is the open type you may be able to clean it.


--------------
Mark Adams     U.K.    Hovercontrol Certified Pilot

Bluebottle: Flying insect with unsavoury habits,
incapable of flying in a straight line, often lands inverted.
Back to top
Profile PM 
LouP
(HC749LO)
Offline





Group: Member
Posts: 204
Joined: May 2009
Posted: April 12 2017,20:02

:-(  Thank you but hope it's OK.  Throttle is twist throttle part of an expensive collective.

LouP
Back to top
Profile PM 
Bluebottle
(HC154BL)
Offline





Group: Certified Pilot
Posts: 3336
Joined: Jan. 2004
Posted: April 12 2017,21:21

In that case it shouldn't be too hard to clean or replace the potentiometer that provides the signal.

Some of the custom collectives use open pots that can get dirty quite quickly.

I would contact the vendor/manufacturer, explain the situation and see what they have to say.


--------------
Mark Adams     U.K.    Hovercontrol Certified Pilot

Bluebottle: Flying insect with unsavoury habits,
incapable of flying in a straight line, often lands inverted.
Back to top
Profile PM 
Simon853
(HC685SI)
Offline





Group: Member
Posts: 2278
Joined: Sep. 2005
Posted: April 21 2017,11:37

You could try not calibrating it all the way to the closed end of the axis range.  That *might* give you a dead zone where it doesn't register.

It's likely the potentiometer track has become dirty, causing an imprecise impedance.  You try taking the pot apart if you know what you're doing.  If it's a really expensive throttle like a Cougar or Warthog then you could get a spare part to fix it.

Si
Back to top
Profile PM 
LouP
(HC749LO)
Offline





Group: Member
Posts: 204
Joined: May 2009
Posted: April 21 2017,15:43

Hi Simon,

Thanks,  this is the unit I have.

http://www.simulationdevices.com/controlsnoseat.html

LouP


Edited by LouP on April 21 2017,18:57
Back to top
Profile PM 
8 replies since April 11 2017,01:18 < Next Oldest | Next Newest >

[ Track this topic :: Email this topic :: Print this topic ]