Notices
Wren Turbines USA Wren USA no longer providing support for their turbines. We are converting this forum into a member supported support forum. This means members will solve members problems

mw54 mk3 start time

Old 07-03-2013, 09:00 AM
  #1  
streakflyer
Junior Member
Thread Starter
 
Join Date: Jan 2011
Location: , UNITED KINGDOM
Posts: 19
Likes: 0
Received 0 Likes on 0 Posts
Default mw54 mk3 start time

Hi I'm new to rc turbines and have purchased a second hand MW54 mk3 with 18hrs on it, at the moment I'm bench running to get some experience, the turbine seems to run nicely, however I'm not sure if the time from Start command to the GSU giving the running signal is normal ?, as you already gathered I'm using full auto start

today I did some testing with 2 seperate Fadec units and got these results,

Turbine Technics Fadec start command to engine running = 74 seconds

Advanced Turbine Control Unit start command to engine running = 68 seconds

the reason I'm asking is the gas always lights off at the first attempt at 6 seconds from start, the turbine accelerates quickly to approx 23k rpm and then the acceleration slows significantly, pausing for a few seconds at around 27k to 28k the starter turns off at 29k and the turbine slowly accelerates towards 45k, at around 33k -36k there is some popping with the odd small flame from the exhaust, this stops by 36k.
Once running at idle the turbine is resposive and accelerates quickly and ceanly upto 160k

I'm running a new 2s 7.4v lipo 2200mah battery

the Fadec parameters are Turbine Technics Fadec

Full speed 160k
Idle 45k
stop 28k
start min 100c
max temp 800c
acc delay 015
dec delay 015
stability delay 50
pump start point auto +1
pump start ramp 004
glow power 040


Advanced Turbine Control Unit
Full speed 160k
Idle 45k
start min 100c
max temp 800c
acc delay 015
dec delay 015
stab delay 50
pump start point auto +1
pump start ramp 005
glow power 039

Many thanks
Jaz


Old 07-03-2013, 10:23 AM
  #2  
Wren Turbines USA
My Feedback: (39)
 
Join Date: Jan 2003
Location: Decatur, IN
Posts: 1,284
Likes: 0
Received 0 Likes on 0 Posts
Default RE: mw54 mk3 start time

Lets start by increasing the pump start ramp by one.
Old 07-04-2013, 07:18 AM
  #3  
streakflyer
Junior Member
Thread Starter
 
Join Date: Jan 2011
Location: , UNITED KINGDOM
Posts: 19
Likes: 0
Received 0 Likes on 0 Posts
Default RE: mw54 mk3 start time

Thank You Ron

I tried increasing in increments of one and now reached "pump start ramp = 009  This seems to be the sweet spot, start command to running in 40 seconds, no more popping in the exhaust and egt good

I presume it's ok to go as high as "009" ?

Many Thanks

Jaz
Old 07-04-2013, 07:58 AM
  #4  
Wren Turbines USA
My Feedback: (39)
 
Join Date: Jan 2003
Location: Decatur, IN
Posts: 1,284
Likes: 0
Received 0 Likes on 0 Posts
Default RE: mw54 mk3 start time

If you have a smooth start and the temperatures are steady and not excessively hot....then, yes you are good to go.

You can also increase the stability delay to 100, as all ECU's (Wren) are now programmed to this value.

Enjoy!
Old 07-04-2013, 08:28 AM
  #5  
streakflyer
Junior Member
Thread Starter
 
Join Date: Jan 2011
Location: , UNITED KINGDOM
Posts: 19
Likes: 0
Received 0 Likes on 0 Posts
Default RE: mw54 mk3 start time

Hi Ron

That's great news, peak temp reached 520c during start so I guess I'm good to go

I'll increase the stability delay as well

Many Thanks
Jaz

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.