RunRyder RC
WATCH
 1 page 1091 views POST REPLY
HomeTurbineAircraftHelicopterTurbine Helicopters › Another start up failure
11-10-2014 02:26 PM  3 years agoPost 1
Richard

rrVeteran

Scottish Borders, U.K.

My Posts: All  Forum  Topic

I took my Powercat out today for a few flights but unfortunately I could not get the PHT3 turbine to ignite!

The turbine went through the start up procedure (Kero start) Preheat 1, ignition, starter motor spinning but no start? Kept timing out on the GSU screen.

Tested the solenoids and both working, pump working. Tried removing the ceramic heating element and to see if it was heating by touching the body against the turbine to complete the circuit but it did not glow?

Should it glow? The kero start has had very little use

Any ideas?

Oh **** ! this is going to be expensive?

PM  EMAIL  GALLERY  Attn:RR  Quote
11-10-2014 03:20 PM  3 years agoPost 2
darrens

rrKey Veteran

United Kingdom

My Posts: All  Forum  Topic

Have had similar issues when the lipo you are using is beginning to fade i.e. not enough voltage to get it to fire under load. Try a different battery and good luck

PS. Plug you GSU in an watch the voltage drop when trying to start

He who dies with the most toys is the winner!

PM  EMAIL  GALLERY  Attn:RR  Quote
11-10-2014 08:51 PM  3 years agoPost 3
Richard

rrVeteran

Scottish Borders, U.K.

My Posts: All  Forum  Topic

Hi darrens,

I'll try another battery, it was quite cold today, 6 Celsius. If the battery is on its way out, it probably couldn't handle the cold.

Oh **** ! this is going to be expensive?

PM  EMAIL  GALLERY  Attn:RR  Quote
11-10-2014 09:11 PM  3 years agoPost 4
modtron

rrKey Veteran

Oxford. UK

My Posts: All  Forum  Topic

The Kero start system pulls loads of current, so if your battery is remotely suspect then it will fail.
You can always go back to gas start just to prove that all in the engine and ECU is operating correctly.
Then maybe look at a new / betters battery for the Kero system.

modtron
Oxford UK

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
11-10-2014 09:28 PM  3 years agoPost 5
Richard

rrVeteran

Scottish Borders, U.K.

My Posts: All  Forum  Topic

Hi Nigel,

I have another battery that I can try although I may not get a chance to try things until the weekend.

Oh **** ! this is going to be expensive?

PM  EMAIL  GALLERY  Attn:RR  Quote
11-11-2014 10:44 PM  3 years agoPost 6
airplanejunkie

rrApprentice

Riverview, Mi.

My Posts: All  Forum  Topic

Just a thought.
I also had similar issues on a PTH-2. Try this. Disconnect the line to the kero start plug and using your start box do a start up and check for a steady drip of fuel. If it does not drip try boosting your start pump voltage. If you do not see a steady drip this indicates several issues you need to look at. 1. a low or tired battery as mentioned above. 2.A tired fuel pump. 3. is the shutoff valve opening. In my case I had 2 issues. A tired battery and a tired fuel pump. The battery was the major culprit however my pump was taking a little more voltage to get it running. Good luck please reply if I can help. I know how frustrating this can be. Dave George AMA5129 RW2500

PM  EMAIL  GALLERY  Attn:RR  Quote
11-12-2014 07:02 PM  3 years agoPost 7
Richard

rrVeteran

Scottish Borders, U.K.

My Posts: All  Forum  Topic

Hi Dave,

I will try your idea at the weekend and let you know,

Richard

Oh **** ! this is going to be expensive?

PM  EMAIL  GALLERY  Attn:RR  Quote
11-16-2014 01:43 PM  3 years agoPost 8
Richard

rrVeteran

Scottish Borders, U.K.

My Posts: All  Forum  Topic

Hi Dave, Modtron, darrens,

I tried changing battery, testing for a drip from the fuel line. Everything else was working as should but still no start up. I then changed the ceramic plug for a another one I had for a new project and the Turbine started without a problem

How long should a plug last as its been hardly used, probably less than 50 starts

Oh **** ! this is going to be expensive?

PM  EMAIL  GALLERY  Attn:RR  Quote
11-16-2014 02:22 PM  3 years agoPost 9
darrens

rrKey Veteran

United Kingdom

My Posts: All  Forum  Topic

Well mine is over 5yrs old and while I don't know how many starts wthout looking I know it has done about 20hrs run time and all starts were on the same kero plug. If I averaged 6 mins per start that would be 200 starts at least and I would suggest it has done way more than that with all the testing and other starts ( the just for fun ones!)

He who dies with the most toys is the winner!

PM  EMAIL  GALLERY  Attn:RR  Quote
11-16-2014 02:29 PM  3 years agoPost 10
modtron

rrKey Veteran

Oxford. UK

My Posts: All  Forum  Topic

Richard,

Do you have any idea which version plug it is - V1, V2 or V3.
If not, can you send a picture of the Kero Plug that is at fault ?

The V1 & V2 had problems with operational life but the current plug seams to go forever.

The other option is that the plug may be ok but the fuel feed may have a blockage and not allowing the fuel a clear passage ?

modtron
oxford UK

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
11-16-2014 06:04 PM  3 years agoPost 11
Richard

rrVeteran

Scottish Borders, U.K.

My Posts: All  Forum  Topic

Hi Nigel,

I never tried testing the fuel supply with the plug still attached?

Here is a picture of the plug I removed, both plugs I have are identical.

Oh **** ! this is going to be expensive?

PM  EMAIL  GALLERY  Attn:RR  Quote
11-16-2014 06:13 PM  3 years agoPost 12
modtron

rrKey Veteran

Oxford. UK

My Posts: All  Forum  Topic

Ok, looks like the current style plug.
It would be interesting to know if there is any restriction in the fuel inlet or the plug housing ?
If there is, this could explain your failed starts.
It requires the fuel to be atomised around the element so as to ignite the fuel into the chamber during pre heat before the main valve is opened.

modtron
Oxford UK

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
11-16-2014 07:01 PM  3 years agoPost 13
Richard

rrVeteran

Scottish Borders, U.K.

My Posts: All  Forum  Topic

I will try and test the plug and let you know.

Oh **** ! this is going to be expensive?

PM  EMAIL  GALLERY  Attn:RR  Quote
11-16-2014 07:07 PM  3 years agoPost 14
Richard

rrVeteran

Scottish Borders, U.K.

My Posts: All  Forum  Topic

If I try and blow through the fuel inlet, I can feel the air coming out of the element end.

Does this mean the element is broken? should the element glow if I attach a power supply to the plug?

Oh **** ! this is going to be expensive?

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 1091 views POST REPLY
HomeTurbineAircraftHelicopterTurbine Helicopters › Another start up failure
 Print TOPIC  Make Suggestion 

 4  Topic Subscribe

Wednesday, August 15 - 12:24 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online