Problematic ECUs
 

He Ed,
In another post , your partner Kevin said that alot of flameouts were due to "D" revision ECUs. In past e-mails from you ,you stated that "E" revisions were being sent out. The latest ECU I recieved from Denmark for my "3000 Dragon" has a label with "3000-D"still.
Have the "E" versions been sent out yet to fix the flame out problems?

Jake

ECU Revisions
 

Hi Jake

The latest revision ECU is indicated as either a "-D1" on the cover label of the ECU, a dated "tested" sticker on the back of the ECU, and if you look in the end of the ECU you should not see a white surface mount relay.

the revision was initially going to be called "E" but it was later decide to call it "D1". Same changes and upgrades, just a different nomenclature.

Ed

BTW, please detail which post you are referring to.

Ed,This was from the "discussion forum"
 

SimJets' spitting flames (post # 11)

I just thought I'd jump in to correct a few things...

We are not actively working on product development, these are fully developped engines. If issues with the engines are brought to light, we do our best to see to it that they are resolved as quickly as can be.

Yes, some 1200s will spit a bit of flames on start-up, but not enough to bake the tail of a plane. If you're having that much flame coming out of the tail cone, it's more than likely that there's a setup problem with the motor (ie the starter motor is not set to the correct depth) or the startup procedure is not being followed (ie not turning off the propane before the start cycle is complete.) Incidentally, the fuel pump is NEVER commanded to run wide open during the start sequence.

Although it's the first I've heard of it, I suspect that Pat McCurry's flame out's were due to the rev D software that affected every other SimJet engine in the same way. (Any of them running rev D software that is...) As all SimJet customers who've been in contact with us (GNM) are aware, we're working to replace all the problematic software.

I don't claim that the SimJet 1200 is a perfect motor, nor that it will instantly make any plane into which it is installed "sing and dance". To do so would be both irrational and irrisponsible. I do however maintain that it is a quality product that when properly set up and cared for will provide many hours of flying bliss and trouble free operation.


__________________
Kevin McLeod
Great Northern Models
SimJet Sales and Service Centre
www.greatnorthernmodels.com

...With enough thrust, lift is irrelevant!!!




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06-17-2002 5:05 PM

New software or not?
 

Jake,

Believe me, you'll know as soon as you start up if you have an ECU with the new software or not; The new software (Rev D1) takes about half the time as the old (Rev D). We've been told that you were shipped an ECU with the new software, regardless of what the label says.

Newest ECU
 

Kevin,
I've got the D1 ECU then, starts faster, but what got my attention was spool up time.
The throttle response must be 1-2 seconds from idle to full!
It's almost as responsive as an I.C. motor!

Jake