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Other › How do i even the pitch on 450
01-28-2007 05:37 PM  10 years agoPost 1
juicegoose

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Houston, TX

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guys im trying to set up my 450se and i have leveled everything in the head to the best of my ability. Problem i'm having is when i reduce the swash afr to about 40 i get 11 degrees positive pitch and 8 negative. Do i need to go into endpoints and adjust the servo endpoints in the negative position to allow for 11 degrees or what. How do i get them to be even 11 posi and negi. thanks.

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01-28-2007 05:42 PM  10 years agoPost 2
slider46

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Ocala Florida

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You need to make sure your servo arms are level with out using trims or sub trims. Then adjust your servo links to get +-10 in both directions. Set your pitch to 0* at mid stick and set your pitch curves to your needs... The afr will set your swash travel on the main shaft so It doesn't bind up or down....60% seems to work well...

Tom..... No "D" flying....

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01-28-2007 05:44 PM  10 years agoPost 3
z11355

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New England

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assuming things are even and squared up, I'd suggest adjusting the
long rods from the swash to mixing arm (preferred) or the very short
arms between teh mixing arm and the blade (2nd preference, more 'coarse' adjustment) until you have 9.5 degrees on both sides
(you have 11 + 8 = 19 degrees total right now) and then adjust
the ATV/AFR to get to +/- 11 (or move the servo ball out 1 hole)

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01-29-2007 01:44 PM  10 years agoPost 4
juicegoose

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Houston, TX

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K i'm confused. i don't understand how moving your links all in one direction one way or the other will allow me more pitch in the negative direction without effecting the pitch in the positive direction. any body want to explain.

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01-29-2007 02:17 PM  10 years agoPost 5
robl45

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Deerfield Beach, FL

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first, are you sure you are setting your throttle stick at 0? Second, is your pitch curve set 0-50-100? Third, you may have to increase your swash setting to get the desired pitch.

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01-29-2007 02:25 PM  10 years agoPost 6
slider46

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Ocala Florida

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What your looking for is 10* in both directions right If you have +11 -8 that is 3 degrees difference that needs to be adjust in one direction to get an equal travel, This is assuming you have 0* pitch at 1/2 throttle right now......If not fix that first....

Tom..... No "D" flying....

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01-29-2007 03:38 PM  10 years agoPost 7
TomRex

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West Palm Beach Join Date: 12-28-2005

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How about a simplified version? 1st center your servos, adjust your servo linkage so the swash is level at half stick double check the washout carrier so the throw goes to the top just a micron before it touches the head block.( the bottom throw limit will be ok) Now go back to center stick, level the swash out then zero both blade pitches. Now re-adjust your pitch throw in the swash pitch afr in the radio to meet your pitch requirements....Done. The next trick will be learning how to level your swash for zero interaction at all pitch throws! Be on the lookout for a page on how to setup your micro heli on one 8.5 x 11 page comming to your screen soon! (By Consolidated Instructions Inc)

Ignorance is the absence of facts.Stupid is lacking the intellectual capacity to comprehend the fact

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01-29-2007 03:41 PM  10 years agoPost 8
SSN Pru

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Taxachusetts

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if you are getting assymetrical pitch on the blades then you need to make sure the swash is centered in its travel up and down. do this by shortening or lengthening the links going from the servo to the swash. make sure that when you center the swash in its travel range that the servo horns are level and your throttle stick is at mid stick. after this, then check to see that you have 0 degrees mid stick. you should have symmetrical pitches after adjusting those links. adjusting any of the links above the swash will not allow you to change only the positive pitch or the negative pitch, it will only increase or decrease the total amounts in BOTH directions.

pru

Stupidity can be cured. Ignorance is for life!

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01-29-2007 03:47 PM  10 years agoPost 9
TomRex

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umdpru, You running Pro-E parametric?

Ignorance is the absence of facts.Stupid is lacking the intellectual capacity to comprehend the fact

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01-29-2007 04:22 PM  10 years agoPost 10
juicegoose

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Houston, TX

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ok guys i watched the videos on heli-freak.com extensivly to set up this bird

i started with a brand new setup in my futaba 9cap
set it for sr-3
made sure everything else was stock

2nd i reversed the servos that needed reversing and then setup in swash afr for proper movement(i.e. posi throttle = up movement of swash

3rd with stick at center i installed all horns to best the horns could be installed then used subtrim to get them completly level.

4th i leveled and adjusted swash links to bring the swash as close as possible to seesaw without hitting.

5th leveled the seesaw

6th leveled the swash cage or whatever it is

7th put blades at zero pitch

everything seemed as level as the eye could make it
i even tried to level swash at both posi and negi pitch to eliminate interaction.

but when i put the pitch guage on it i got like 12-13 degrees posi pitch at 50% afr so i lowered the afr to 40% and brought the posi pitch to 10-11 degrees swash at center still read level and i have not touched the linear curve yet for normal operation

when i went to negative the pitch was about 8-9 degrees
theres where the problem is i don't know how to fix it from there.

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01-29-2007 04:36 PM  10 years agoPost 11
SSN Pru

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Taxachusetts

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4th i leveled and adjusted swash links to bring the swash as close as possible to seesaw without hitting.
is this being adjusted while the collective stick is at mid stick or are you looking at this point after moving the collective to full positive?

you need to adjust the links going from your servos to the swash. the swashplate has not been centered in its travel range. your swashplate is at 3-4 degrees positive above its center point while your blades are at 0 because you have adjusted the upper mixing links to do so. FORGET ABOUT THE HEAD ABOVE THE SWASH AND CENTER YOUR SWASH IN ITS TRAVEL RANGE. then rezero your blades at mid stick and get back to us.

i had this exact problem, i was getting +12 and -8. my swash was not centered in its travel range. 5 minutes of linkage adjustment on the servo to swash links fixed this!

pru

Stupidity can be cured. Ignorance is for life!

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01-29-2007 04:42 PM  10 years agoPost 12
smoothound

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Lancing, West Sussex, UK.

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Shorten your servo to swash links equally then increase the swash mix a bit until you have a level swash, 0 deg at mid stick and +-9/10 deg at both ends, simple

Phil

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01-29-2007 04:43 PM  10 years agoPost 13
juicegoose

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Houston, TX

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the way i did it was i would push the stick forward(posi pitch)
and see how close i was to the seesaw
then i would adjust
so basically i adjusted the swash in the positive position to get it as close to the seesaw as possible without hitting

so what your saying is level the swash in its range and that the setup i currently have is putting the swash to high will do

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01-29-2007 04:44 PM  10 years agoPost 14
juicegoose

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Houston, TX

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ya it makes sense now if i leveled the swash but pushed it up in its range then put blades at zero pitch that should be the culprut

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01-29-2007 04:53 PM  10 years agoPost 15
slider46

rrProfessor

Ocala Florida

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Set you blades to 0* at mid stick this is where you level everything in the head assembly.... not at low stick....

Tom..... No "D" flying....

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01-29-2007 05:07 PM  10 years agoPost 16
juicegoose

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Houston, TX

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i did set the blades head everything at midstick

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01-29-2007 05:32 PM  10 years agoPost 17
SSN Pru

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Taxachusetts

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i did set the blades head everything at midstick
have you centered the swash in its travel yet??

that is the problem you are experiencing and yet you keep choosig to ignore it. shorten or lengthen your servo to swash links to get the swash centered in its travel. UNTIL YOU DO THIS YOU WONT SEE SYMMETRICAL PITCH ON YOUR MAIN BLADES

DO THIS FIRST BEFORE ANYTHING ABOVE THE SWASH!!!!!!

eash time you adjust your servo to swash links, you will have to systematically move link by link up the head to be sure everything is level. when you get to the main blades, center your collective and zero your pitch. THEN YOU CAN CHECK YOUR PITCH RANGES. NOT BEFORE!

pru

Stupidity can be cured. Ignorance is for life!

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01-29-2007 05:34 PM  10 years agoPost 18
smoothound

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Lancing, West Sussex, UK.

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i did set the blades head everything at midstick
Yeah but it appears the problem is that your mid stick is probably too high so you need to shorten the links slightly which will mean all the links above will need tweaking, reset your blades to 0* at this new mid point and then you will also need to increase your swash mix a bit to get the washout base almost touching the head block again

Phil

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01-29-2007 05:37 PM  10 years agoPost 19
TomRex

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West Palm Beach Join Date: 12-28-2005

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You may still have to fidget with the servo linkage length to get things perfict at 0 pitch/center stick and checking for the swash top and bottom throw all at the same time. Once you get addapted its a cinch, surf to the readyheli site and look for a 450 swash leveler when you feel the need for more tools. The tool instructions/trim/userguide/reviews are a benificial addition to the setup procedure and will help you understand what to shoot for.

http://www.readyheli.com/T_Rex_Swas...r_p/leveler.htm

Ignorance is the absence of facts.Stupid is lacking the intellectual capacity to comprehend the fact

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01-29-2007 06:06 PM  10 years agoPost 20
juicegoose

rrNovice

Houston, TX

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thanks guys i won't be able to adjust anything until this evening but from the advise you all have given it sounds like i adjusted the swash to high i will go back and measure and adjust swash to middle of travel then go from there. thanks.

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