Westy
LEGEND
had a guy contact me through NZ version of Ebay "Trademe" as I have at hte bottom of all my for sale items .... that I fix all helis, do flight training and transmitter heli setups and test flights for reasonable prices.
ANy HOOOOWWW ....
this guy has a KDS 450s one of the original ones.... and it has a 7 channel transmitter. he was complaining that every time he tried to take off, the tail was trying to flip forward over the heli.
I took the job and stripped the head and foung no damage to the mainshaft or feathering shaft and all linkages were intact and bearings were all free and not binding.
The head is of really low quality and I have convinced him to upgrade to a TArot 450 Pro quality metal head. He has wooden blades too ... so I also asked if he minded upgrading to some reasonably priced Carbon Fibre blades. - He Agreed.
In regards to the rotor head ... there is heaps of slop in the washout links and I put it down to total poor manufacturing and plastic parts are all worn.
so I moved onto the K7x KDS radio and since I was not familiar ..... I did a quick 15 minute brush up on the Tx with a manual.
Here is what I found:
The Heli would not have even taken off let alone fly!!! Lucky i did not try to test fly first before doing all my checks.
SO once I cleaned up al that mess, I moved onto swash setup.... it was leaning forward a full 5mm!!!!! so i went back to the drawing boards and measured and set all the linkages. 90 degrees all the servo arms as close a possible and used sub trim to fine tune it.
I then worked on the head with it on and tidied up all the linkages there, set 0 pitch ad mid stick and then set a master blade up. Got the second blade in as close as I could and put the heli out to do the final tracking. the blades would not track properly ..... "USELESS WOODEN BLADES + SLOPPY HEAD LINKAGES = TOTAL WOFTAM" so got is a close as I could while it was actually in the air as i would set it up just before take off and get it pretty good and then it would be miles out in the air.
Anyway I have gone as far as I can until the new parts come .... so will keep you all in the loop once it comes and show you the difference some decent bits do for performance..... not wonder people just struggle with flying these junkers! ..... and give up..... if htey had a decent heli to start with .... the flying is a lot easier.
ANy HOOOOWWW ....
this guy has a KDS 450s one of the original ones.... and it has a 7 channel transmitter. he was complaining that every time he tried to take off, the tail was trying to flip forward over the heli.
I took the job and stripped the head and foung no damage to the mainshaft or feathering shaft and all linkages were intact and bearings were all free and not binding.
The head is of really low quality and I have convinced him to upgrade to a TArot 450 Pro quality metal head. He has wooden blades too ... so I also asked if he minded upgrading to some reasonably priced Carbon Fibre blades. - He Agreed.
In regards to the rotor head ... there is heaps of slop in the washout links and I put it down to total poor manufacturing and plastic parts are all worn.
so I moved onto the K7x KDS radio and since I was not familiar ..... I did a quick 15 minute brush up on the Tx with a manual.
Here is what I found:
- All the trims were all over the place
- Sub trims were to the extreme
- Dr settings were crazy - Elevator with 70% DR and Aileron 85%
- Pitch curve was miles out
- Throttle curves were totally wrong
- the model was set up for a PLane rather than a 3 servo CCPM heli
- Gyro was at 100% on normal mode and -100 on ID1 .... so had to sort that out too.
- then I set up the CCPM using endpoint adjustments to get nice smooth up and down the main shaft level swash.
The Heli would not have even taken off let alone fly!!! Lucky i did not try to test fly first before doing all my checks.
SO once I cleaned up al that mess, I moved onto swash setup.... it was leaning forward a full 5mm!!!!! so i went back to the drawing boards and measured and set all the linkages. 90 degrees all the servo arms as close a possible and used sub trim to fine tune it.
I then worked on the head with it on and tidied up all the linkages there, set 0 pitch ad mid stick and then set a master blade up. Got the second blade in as close as I could and put the heli out to do the final tracking. the blades would not track properly ..... "USELESS WOODEN BLADES + SLOPPY HEAD LINKAGES = TOTAL WOFTAM" so got is a close as I could while it was actually in the air as i would set it up just before take off and get it pretty good and then it would be miles out in the air.
Anyway I have gone as far as I can until the new parts come .... so will keep you all in the loop once it comes and show you the difference some decent bits do for performance..... not wonder people just struggle with flying these junkers! ..... and give up..... if htey had a decent heli to start with .... the flying is a lot easier.
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