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I bought this 600E second hand a month or two ago and it has bee working absolutely fine. It is my favourite non-scale machine of the five I have, of which two are scale machines.
All has been going well until the other day when it rolled over on spool up for some unexplained reason. This suggested a servo failure, even though control response had been checked immediately before spooling up. In the re-build, not that there was a great deal of damage - just boom-strike and blades - I focused on the servos and, to my surprise found that the controls were binding on the two forward servos, aileron and pitch. The binding was occuring between the two parallel push rods going rearward from the servo and the 'returning' horn which is connected via push rod to the swash-plate, running betwen the servo push-rods and the frame. I was surprised because this had neither shown on control checks or in flying but, it obviously needed attending to. On one servo, with dual arms for the 'horns', this was easily done by positioning the balls on the outside instead of the inside. This is consistent with the illustration in the T-Rex 600 manual.
The other servo has an Align disc type servo arm which can only take the balls on the inside because it has a captive nut location on the outside. This is consistent with most (if not all) of the illustraions (Google, suppliers etc) for Align servo arms. With this one the end of the inside horn was contacting the end of the plastic ball link ring and so just had to carefully file a 45 degree bevel on the end of it to give the clearance.
All rather curious with conflicting information coming from the manual and spare parts supply. So what comments do other T-Rex600 owners have on this please.
Regards
Nigel
All has been going well until the other day when it rolled over on spool up for some unexplained reason. This suggested a servo failure, even though control response had been checked immediately before spooling up. In the re-build, not that there was a great deal of damage - just boom-strike and blades - I focused on the servos and, to my surprise found that the controls were binding on the two forward servos, aileron and pitch. The binding was occuring between the two parallel push rods going rearward from the servo and the 'returning' horn which is connected via push rod to the swash-plate, running betwen the servo push-rods and the frame. I was surprised because this had neither shown on control checks or in flying but, it obviously needed attending to. On one servo, with dual arms for the 'horns', this was easily done by positioning the balls on the outside instead of the inside. This is consistent with the illustration in the T-Rex 600 manual.
The other servo has an Align disc type servo arm which can only take the balls on the inside because it has a captive nut location on the outside. This is consistent with most (if not all) of the illustraions (Google, suppliers etc) for Align servo arms. With this one the end of the inside horn was contacting the end of the plastic ball link ring and so just had to carefully file a 45 degree bevel on the end of it to give the clearance.
All rather curious with conflicting information coming from the manual and spare parts supply. So what comments do other T-Rex600 owners have on this please.
Regards
Nigel
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