wren supersport
#2
RE: wren supersport
You'll need to give more information for anyone to help.
When does it happen? What does the ECU say as the reason for shutdown? Is there smoke or no smoke during flameout? What batteries/fuel system setup?
When does it happen? What does the ECU say as the reason for shutdown? Is there smoke or no smoke during flameout? What batteries/fuel system setup?
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RE: wren supersport
ORIGINAL: highhorse
have u contacted WREN?
have u contacted WREN?
I ll get info from ecu and post it . it would be intresting what settings other people are useing on there ecu. does hot weather affect it ? not that its that hot in the uk[&o]
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RE: wren supersport
i have a 54 and the only reason it has ever flamed out is that i brought a cheap uat and it was letting air in make sure you have no bubbles in you fuel supply
#6
RE: wren supersport
Just curious BUT you are having problems with a Wren engine so why not talk to Wren directly ? They are in the UK and have first class customer service which is only a phone call away !
David G.
David G.
#7
RE: wren supersport
I have/had the same problem - is it the flightworks pump you have? If so try increasing the decel delay to 40 as I found when coming down from say full chat the rpm would drop below 28k and it would cut as the pump/ecu didn't have time to catch it. What I think is the problem is that since the pump is brushed it will need bedding in/freeing up so i plan on flying it for a while just being aware that its slightly slower to come down from thrust.
For note, in my efforts to find the problem I took the whole fuel system apart and even ran it direct from a bvm hopper tank which made 0 difference. Also, I am running 6mm festo tubing from a kevlar fuel cell so the pump has no issues pulling the fuel in and certainly no air bubbles observed!
Cheers,
Colin
For note, in my efforts to find the problem I took the whole fuel system apart and even ran it direct from a bvm hopper tank which made 0 difference. Also, I am running 6mm festo tubing from a kevlar fuel cell so the pump has no issues pulling the fuel in and certainly no air bubbles observed!
Cheers,
Colin
#8
RE: wren supersport
That doesn't sound like the same problem to me. One is an accel problem and the other a decel.
My supersport is packed away at the moment but I've just checked my kit built Mk3 and the accel delay is set at 17. My guess would be air in the fuel. What is your fuel tank setup?
My supersport is packed away at the moment but I've just checked my kit built Mk3 and the accel delay is set at 17. My guess would be air in the fuel. What is your fuel tank setup?
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RE: wren supersport
Without wishing to be critical there may be an installation problem. Has the turbine run successfully in the currennt model? I have 42 hours on my SS and it runs on standard 3mm fuel tubing as originally supplied fed from a BVM air trap. It has occassionally flamed out but the reason has always been a consequence of an external problem. As Dave says Wren can't be more helpful. Ron.
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RE: wren supersport
ORIGINAL: ron Sweeney
Without wishing to be critical there may be an installation problem. Has the turbine run successfully in the currennt model? I have 42 hours on my SS and it runs on standard 3mm fuel tubing as originally supplied fed from a BVM air trap. It has occassionally flamed out but the reason has always been a consequence of an external problem. As Dave says Wren can't be more helpful. Ron.
Without wishing to be critical there may be an installation problem. Has the turbine run successfully in the currennt model? I have 42 hours on my SS and it runs on standard 3mm fuel tubing as originally supplied fed from a BVM air trap. It has occassionally flamed out but the reason has always been a consequence of an external problem. As Dave says Wren can't be more helpful. Ron.
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RE: wren supersport
From the discription it sounds like you have a blocked needle or two or more likely some worn out sticks. I guess it could also be the pump so I'd try another and if that don't sort it then send it off to Wren.
Be sure to let us know when it's sorted.
Jason
Be sure to let us know when it's sorted.
Jason
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RE: wren supersport
Another thought, have you a pal with an SS who would lend you his ecu. One of my freinds was having trouble with his SS with a new ecu which gave some very erratic behaviour. When we sustituted my ecu the turbine ran perfectly proving the ecu was at fault. Ron.
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RE: wren supersport
I have had botha MW-54 and a SS. both were perfect turbines, no trouble of any kind, super smooth operation. How far are you from here>>>Unit 19, Century Park Network Centre,
Manvers
Rotherham
S63 5DE
UK
OR even easier call here>>>Telephone: +44 (0) 1709 877439
These guys have the best backup service ever!!! they can probably get you back in the air in a day or 2!!!!!!!!!!
Manvers
Rotherham
S63 5DE
UK
OR even easier call here>>>Telephone: +44 (0) 1709 877439
These guys have the best backup service ever!!! they can probably get you back in the air in a day or 2!!!!!!!!!!
#20
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RE: wren supersport
Hi All
I have had 18 successful flights with no problems at all. At Merryfield my SS overfueled on vealously applying full throttle and shut itself down.
increased the acceleration delay from 15 to 20 and had two more successfull flights. Last weekend had two more overfueled escapades and was lucky to get away with the dead sticks. Accel now up to 35. If you accelerate to quickly from idle you get that funny roaring noise just before the ECU shuts the turbine down.
I too will be speaking to Wren.
I have had 18 successful flights with no problems at all. At Merryfield my SS overfueled on vealously applying full throttle and shut itself down.
increased the acceleration delay from 15 to 20 and had two more successfull flights. Last weekend had two more overfueled escapades and was lucky to get away with the dead sticks. Accel now up to 35. If you accelerate to quickly from idle you get that funny roaring noise just before the ECU shuts the turbine down.
I too will be speaking to Wren.
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RE: wren supersport
Is there some sort of Bermuda Triangle around Cheltenham that affects Wren ECUs? new2jets and box5555 both have same problem, both from same town? At Merryfield I couldn't fly because the new ECU with my Wren 160 would not work. I live in....... Cheltenham!
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RE: wren supersport
Just went and looked no screws missing that just seem to easy!
harry ,roger, me and now rob all live in cheltenham all with maybe ecu problems! scarey there won`t be a ecu to borrow.
looks like i will be speaking to wren too[&o]
box55555 and i fly together and our turbin problems are much the same on the same days bermuda triangle sounds like it
harry ,roger, me and now rob all live in cheltenham all with maybe ecu problems! scarey there won`t be a ecu to borrow.
looks like i will be speaking to wren too[&o]
box55555 and i fly together and our turbin problems are much the same on the same days bermuda triangle sounds like it
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RE: wren supersport
Hi Harry. the pal of mine who experienced ecu trouble was on his second one, the first had proved faulty and Wren had changed it. Not saying that this is your problem. Ron
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RE: wren supersport
Hi new2jets
Sorry but we have all been waffling, but have not answered your original question.
My engine ECU setting
Idle 43,000
Stop 28,000
Accel delay 015 (original) now increased to 030 (to stop the problem)
Decel delay 010
Stability 050
Pump start Auto +1
Pump ramp 006
Have contacted Wren with these values and they have requested more info
Sorry but we have all been waffling, but have not answered your original question.
My engine ECU setting
Idle 43,000
Stop 28,000
Accel delay 015 (original) now increased to 030 (to stop the problem)
Decel delay 010
Stability 050
Pump start Auto +1
Pump ramp 006
Have contacted Wren with these values and they have requested more info