Wren 54II starter/Bendix problem
10-11-2007 | 09:01 PM
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From: Christiana,
TN
Wren 54II starter/Bendix problem
I recently changed my Wren-54II over from onboard start to autostart. I worked the minor bugs out thanks to those from the forum who helped. In the process, I think its time for a new starter and Bendix.
What happened is the starter started to intermittently stick during start up. The result seemed to be the stuck starter keeping the turbine from reaching its idle point-it would hang at about 25K and the temp would surge to 800 degrees celcius, followed by (thank god) shut down, or I would abort the start. Sometimes the start sequence would be complete and the run was fine. But the problem started happening more frequently-and finally, every start attempt was not successful.
So I pulled the starter out of the caseing thinking the oring needed to be cleaned/inspected. In messing with the Bendix, it catches all the time now. And to make matters worse, the shaft on the motor has alot of play. I put everything back together after unsticking and lubricating the assy. The result was the same, except sinch the starter sticks, the whole motor rotated a few turns inside the housing during the start attempt[
] So I thinks its pretty toast now for sure-
Does my description of the problem make sense? I emailed Carlos at RTI to see if he has a 280 motor w/ a new Bendix assy.
Any input from those who have experienced a similar problem would be great-
Thank you,
Kev
What happened is the starter started to intermittently stick during start up. The result seemed to be the stuck starter keeping the turbine from reaching its idle point-it would hang at about 25K and the temp would surge to 800 degrees celcius, followed by (thank god) shut down, or I would abort the start. Sometimes the start sequence would be complete and the run was fine. But the problem started happening more frequently-and finally, every start attempt was not successful.
So I pulled the starter out of the caseing thinking the oring needed to be cleaned/inspected. In messing with the Bendix, it catches all the time now. And to make matters worse, the shaft on the motor has alot of play. I put everything back together after unsticking and lubricating the assy. The result was the same, except sinch the starter sticks, the whole motor rotated a few turns inside the housing during the start attempt[
] So I thinks its pretty toast now for sure-Does my description of the problem make sense? I emailed Carlos at RTI to see if he has a 280 motor w/ a new Bendix assy.
Any input from those who have experienced a similar problem would be great-
Thank you,
Kev
10-11-2007 | 09:38 PM
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From: Christiana,
TN
RE: Wren 54II starter/Bendix problem
Howdy Mike-
Im gonna talk to Sara tomorrow. Ive learned a ton the last 3 weeks, and now this. But its all good.......
Im gonna talk to Sara tomorrow. Ive learned a ton the last 3 weeks, and now this. But its all good.......
10-12-2007 | 12:57 AM
#4
RE: Wren 54II starter/Bendix problem
ORIGINAL: check6ii
I recently changed my Wren-54II over from onboard start to autostart. I worked the minor bugs out thanks to those from the forum who helped. In the process, I think its time for a new starter and Bendix.
What happened is the starter started to intermittently stick during start up. The result seemed to be the stuck starter keeping the turbine from reaching its idle point-it would hang at about 25K and the temp would surge to 800 degrees celcius, followed by (thank god) shut down, or I would abort the start. Sometimes the start sequence would be complete and the run was fine. But the problem started happening more frequently-and finally, every start attempt was not successful.
So I pulled the starter out of the caseing thinking the oring needed to be cleaned/inspected. In messing with the Bendix, it catches all the time now. And to make matters worse, the shaft on the motor has alot of play. I put everything back together after unsticking and lubricating the assy. The result was the same, except sinch the starter sticks, the whole motor rotated a few turns inside the housing during the start attempt[] So I thinks its pretty toast now for sure-
Does my description of the problem make sense? I emailed Carlos at RTI to see if he has a 280 motor w/ a new Bendix assy.
Any input from those who have experienced a similar problem would be great-
Thank you,
Kev
I recently changed my Wren-54II over from onboard start to autostart. I worked the minor bugs out thanks to those from the forum who helped. In the process, I think its time for a new starter and Bendix.
What happened is the starter started to intermittently stick during start up. The result seemed to be the stuck starter keeping the turbine from reaching its idle point-it would hang at about 25K and the temp would surge to 800 degrees celcius, followed by (thank god) shut down, or I would abort the start. Sometimes the start sequence would be complete and the run was fine. But the problem started happening more frequently-and finally, every start attempt was not successful.
So I pulled the starter out of the caseing thinking the oring needed to be cleaned/inspected. In messing with the Bendix, it catches all the time now. And to make matters worse, the shaft on the motor has alot of play. I put everything back together after unsticking and lubricating the assy. The result was the same, except sinch the starter sticks, the whole motor rotated a few turns inside the housing during the start attempt[
] So I thinks its pretty toast now for sure-Does my description of the problem make sense? I emailed Carlos at RTI to see if he has a 280 motor w/ a new Bendix assy.
Any input from those who have experienced a similar problem would be great-
Thank you,
Kev
you need a tagami motor or mulitplex sells them also..
most of the trouble about a sticking starter is mis alignment , the clutch needs to retract everytime you cut the power.
if it does not it is missaligned or the bendix is reall stuck.
if you are not getting above 25 k look if you have enough batt power.
10-12-2007 | 03:21 AM
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From: RotherhamYorkshire, UNITED KINGDOM
RE: Wren 54II starter/Bendix problem
Don't buy a starter and bendix from anyone else but a Wren dealer, please - we make our own bendixes and other ones are unlikely to fit. We have different sizes for the 54 and 44. Also, it's very difficult to change a bendix from one motor to another - they are a very tight fit and we always recommend that you buy a new assembly. I have them in stock, and JHH may have stock also.
Sara Parish
Wren Turbines
Sara Parish
Wren Turbines
10-12-2007 | 07:09 AM
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From: Christiana,
TN
RE: Wren 54II starter/Bendix problem
ORIGINAL: NO1
Kev,
I'm in Indiana and have a starter motor in stock....
260-724-8936
cheers,
Kev,
I'm in Indiana and have a starter motor in stock....
260-724-8936
cheers,
10-30-2007 | 07:43 PM
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From: Christiana,
TN
RE: Wren 54II starter/Bendix problem
Installed a new motor/bendix into the new style starter pod from Wren. The whole thing took about 15 min to install. Moved the throttle stick and the engine fired right up. So now its time to re-install into the airframe!!!!!
