More one swash discussion!

Alexandre Najar · 10-23-2010, 12:06 AM

Hi everyone! Sorry for asking such a knew subject like swash! After all set like trex 500 esp manual and with a pitch curve 0-50-100, when I move the stick full up my wash out base binds at main rotor housing and when I get it down I can not get negative pitch that I want ( specially if I changed my swash mix pitch). So, my swash is in a upper position than should be. What I did, going against almost everyone in this forum, was changing my endpoints to control the most up and down swash stop, then leveled it in this positions and used subtrim to level it at midstick! Now I have +12/-12 and 4* at midstick! Why is wrong to do this? I think that is much easier to change endpoints instead of messing with the links! Probably this thread was written so much times, but swash plate is always a setup problem in helis!

bj660raptor · 10-23-2010, 02:28 AM

Get your mechanical setup as close as you can,then fine tune with the tx,,,,or easyer isn't better"when it comes to this",,,,that's all.

Deet · 10-23-2010, 03:47 AM

The manual is incorrect, the lengths it states for the links from servo to swash are too long, they need to be about 5 full turns shorter

Larry227 · 10-23-2010, 08:53 AM

1. Deet is correct on the linkage length
2. You should be shooting for 0 pitch at midstick, not +4.
3. Make sure the washout base isn't upside down. That's a common mistake that will certainly cause binding at the top.

Ozz58 · 10-23-2010, 08:57 AM

Quote:

Originally Posted by Larry227

1. Deet is correct on the linkage length
2. You should be shooting for 0 pitch at midstick, not +4.
3. Make sure the washout base isn't upside down. That's a common mistake that will certainly cause binding at the top.

4. Make sure at 0 pitch (mid stick like mentioned above) your washout arms are perfictly level.

Alexandre Najar · 10-23-2010, 03:02 PM

Guys, thank you for the tips! I never could imagine that align manual was wrong! I did five turns on my swash-to-servo links and the problem was gone, no binds anymore! Now is time to change my mid stick pitch to zero. Why this is so important!? And which is the best way to do that? Thank you my teachers

bj660raptor · 10-23-2010, 10:01 PM

Go to the tech room and watch ccpm setup 1&2 that should give you everything you need to know.

lankey · 10-24-2010, 04:02 AM

Whenever you change the height of the swash by altering the length of the servo links, you will change the pitch on the blades.

You now have to reset the links in the head to give zero pitch at midstick, then measure your overall collective pitch range again. As mentioned level the washout arms first then get zero degrees on the blades. If it's not the same, for example +10/-13°, then you would need to raise the swashplate, reset the head to zero and measure again.

Finless does cover this in the CCPM vids, and I'm afraid it can be a bit of a chasing game but you'll get there.

Always mechanical adjustment before electronic.

10-23-2010, 12:06 AM	#1
Alexandre Najar Registered Users Join Date: May 2010 Location: Brazil	More one swash discussion! Hi everyone! Sorry for asking such a knew subject like swash! After all set like trex 500 esp manual and with a pitch curve 0-50-100, when I move the stick full up my wash out base binds at main rotor housing and when I get it down I can not get negative pitch that I want ( specially if I changed my swash mix pitch). So, my swash is in a upper position than should be. What I did, going against almost everyone in this forum, was changing my endpoints to control the most up and down swash stop, then leveled it in this positions and used subtrim to level it at midstick! Now I have +12/-12 and 4* at midstick! Why is wrong to do this? I think that is much easier to change endpoints instead of messing with the links! Probably this thread was written so much times, but swash plate is always a setup problem in helis!

10-23-2010, 03:47 AM	#3
Deet Registered Users My HF Map location Join Date: Dec 2009 Location: South Australia	The manual is incorrect, the lengths it states for the links from servo to swash are too long, they need to be about 5 full turns shorter __________________ Dave Goblin 500, Vbar, BLS153, BLS251, Kontronic Jive & Piro MutliWiiCopter Scarab Stealth Armour, Scarab TriiKopta, Scarab Octa, Scarab Vampire

10-23-2010, 08:53 AM	#4
Larry227 Registered Users My HF Map location Join Date: Jul 2008 Location: Creston, BC (Canada) Porthill, Idaho (US)	1. Deet is correct on the linkage length 2. You should be shooting for 0 pitch at midstick, not +4. 3. Make sure the washout base isn't upside down. That's a common mistake that will certainly cause binding at the top. __________________ Compass 6HV - SK540 - MKS HBL665/669 Trex 500 ESP - SK540 - 510's/BLS251 DX8 / Phoenix / Persistence ~"See the heli, fly the heli"~

10-24-2010, 04:02 AM	#8
lankey Registered Users Join Date: Apr 2008 Location: St Ives, Cambridgeshire, UK	Whenever you change the height of the swash by altering the length of the servo links, you will change the pitch on the blades. You now have to reset the links in the head to give zero pitch at midstick, then measure your overall collective pitch range again. As mentioned level the washout arms first then get zero degrees on the blades. If it's not the same, for example +10/-13°, then you would need to raise the swashplate, reset the head to zero and measure again. Finless does cover this in the CCPM vids, and I'm afraid it can be a bit of a chasing game but you'll get there. Always mechanical adjustment before electronic. __________________ 450 PRO, 500 ESP Due to economic circumstances, the light at the end of the tunnel has been turned off until further notice.

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10-23-2010, 02:28 AM	#2
bj660raptor Registered Users Join Date: Apr 2010 Location: Las Vegas,NV	Get your mechanical setup as close as you can,then fine tune with the tx,,,,or easyer isn't better"when it comes to this",,,,that's all.

10-23-2010, 03:02 PM	#6
Alexandre Najar Registered Users Thread Starter Join Date: May 2010 Location: Brazil	Guys, thank you for the tips! I never could imagine that align manual was wrong! I did five turns on my swash-to-servo links and the problem was gone, no binds anymore! Now is time to change my mid stick pitch to zero. Why this is so important!? And which is the best way to do that? Thank you my teachers

10-23-2010, 10:01 PM	#7
bj660raptor Registered Users Join Date: Apr 2010 Location: Las Vegas,NV	Go to the tech room and watch ccpm setup 1&2 that should give you everything you need to know.