Go Back  RCU Forums > RC Airplanes > RC Jets > Turbine Clinic > Merlin Turbine Clinic
Reload this Page >

merlin 100xbl slow spool up/shutdown

Community
Search
Notices
Merlin Turbine Clinic Support for Merlin Turbines is provided in this forum

merlin 100xbl slow spool up/shutdown

Thread Tools
 
Search this Thread
 
Old 09-20-2021, 01:54 PM
  #1  
snatch-it
Thread Starter
 
Join Date: Nov 2009
Location: red rose country, UNITED KINGDOM
Posts: 171
Likes: 0
Received 0 Likes on 0 Posts
Default merlin 100xbl slow spool up/shutdown

bit of a long one, but here we go. i have a merlin 100xbl with almost 8 hours on it. when flying the multiplex data lead disconnected from the turbine causing a flame out.
now the turbine starts fine, but is slow to spool up. and then shuts down when pushing the throttle the last couple of clicks. it will do this regardless of what you set the max turbine rpms at.
did notice the pump pw at 190 at idle and just over 1k when max rpms are set at 152k.
i have since run it of an external tank straight into the pump. exactly the same results. so i can rule out the fuel system.
the pump has been tested on a brushless esc and functions fine, starts to pump easy and consistant. so i think the pump can be ruled out.
im inclined to think that the ecu has some how had a brain fart. rc has been relearnt, tx is set at 100 each way. fault happens on the last few sections of going full throttle!! at any set max rpm. even if set at 130k! all my other turbines are fine on this tx.
any help on this one would be i would be greatfull

regards

nigel
Old 09-28-2021, 03:11 AM
  #2  
GRVW
 
Join Date: Mar 2009
Location: Canberra, AUSTRALIA
Posts: 29
Likes: 0
Received 0 Likes on 0 Posts
Default

I have an M100 too. I can say from direct experience that the ECU for these don't like being shorted out - mine burned part of the pump power circuitry when the pump lead shorted, meaning it would not come up to idle properly. So maybe your lead somehow shorted when it came out? I'd be thinking it's the ECU.anyway.

Last edited by GRVW; 09-28-2021 at 01:20 PM.

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



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.