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HomeAircraftHelicopterHelicopter Main Discussion › Throttle linkage - which is better?
10-15-2005 03:36 AM  12 years agoPost 1
E30TECH

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Jefferson, New Jersey

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Since I am still 'fine tuning' the heli, I was wondering which is the preferred way to have the linkage...


This was the way I had it until I changed the end points. The end points were not equal (one side was 100 the other was 75)


This is what I changed it to. The end points are now equal at 90.

There is no binding (nor was there binding)

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10-15-2005 03:42 AM  12 years agoPost 2
getfurious

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Exeter, NH

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The way I have it on my Raptor is that I put the linkage on the throttle arm on the other side that you have and put the servo arm so that it is 90. Just like the second picture, but move the ball on the throttle arm.

Basically, put the throttle at half on both the carb and the servo, make both arms 90 degrees to the ground and hook up the linkage. That should require little to no adjustment to your end points.
Make sure end points are always equal to each other.

Wow, this is hard to explain.

A skilled pilot without flight discipline is a walking time bomb.

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10-15-2005 04:02 AM  12 years agoPost 3
DSW

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Oviedo, Florida 32765

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I believe it should look something like this. (Not the best picture).
The servo arm and the carb arm should be parrallel.

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10-15-2005 04:04 AM  12 years agoPost 4
E30TECH

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Jefferson, New Jersey

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Thanks for both of your replies.

I will fix this before I fly it tomorrow.

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10-15-2005 04:05 AM  12 years agoPost 5
getfurious

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Exeter, NH

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Yeah, thats right, I just have it on the opposite side.

A skilled pilot without flight discipline is a walking time bomb.

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10-15-2005 04:08 AM  12 years agoPost 6
E30TECH

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Jefferson, New Jersey

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I guess the side doesn't matter - right? This is assuming there is no binding.

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10-15-2005 04:09 AM  12 years agoPost 7
getfurious

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Exeter, NH

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No, as long as there is no binding. Just personal preference, I guess.

A skilled pilot without flight discipline is a walking time bomb.

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10-15-2005 04:18 AM  12 years agoPost 8
E30TECH

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Jefferson, New Jersey

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TT Helis -

I'm not sure what you mean by having the servo hown in the front. I was going to do it like DSW has in the pic.

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10-15-2005 04:37 AM  12 years agoPost 9
DSW

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Oviedo, Florida 32765

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The linkage will only be at 90 degrees at half stick.

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10-15-2005 04:38 AM  12 years agoPost 10
E30TECH

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Jefferson, New Jersey

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Sorry - I'm a bit tired.

I will correct it so it is like DSW's

Thanks for all the help guys.

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10-15-2005 04:57 AM  12 years agoPost 11
nojohnny101

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10 miles north of Cincy, OHIO

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hey
it describes this exact issue at raptor technique...see here:

throttle linkage


about 3/4 way down the page...

it just doesn't give a very good linear setup

Thanks
~Will~

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10-15-2005 12:51 PM  12 years agoPost 12
JuanRodriguez

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The Villages, Florida

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E30TECH,
And while you're at it, check DSW's pic once again to see how he has his pitch servo installed..... the geometry there is much better than your setup....

In other words, flip the pitch servo around so that the output arm faces the front of the heli. You'll see in the picture that doing it this way gives you a nice straight shot to the pitch arm instead of the horrible angle you now have....

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10-15-2005 01:13 PM  12 years agoPost 13
Heli88

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Clarkston, MI

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Noticed that you still need to tie wrap the exhaust deflector and secure your antenna.

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10-15-2005 02:15 PM  12 years agoPost 14
E30TECH

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Jefferson, New Jersey

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Thanks again for the replies....

I will set the throttle up the way Girard Ibanez has it in his gallery.

JuanRodriguez
Thanks for telling me that - someone mentioned this to me last night in a PM. I thought the pushrod looked funny, but I guess I lacked the common sense to flip the servo.

I bought this heli used, but I guess that is not an excuse

Heli88
The deflector is zipped on (with white ties). I am able to rotate it to keep the oil from dripping on the floor when I carry it.
I think the antenna is secured correctly. I should take a pic of it and see what you guys think.

The only other helis I've seen where here on runryder. I never saw any in person. I have gone over the entire heli - balancing everything and checking to make sure it was setup ok. I took the head apart last week and cleaned all the bearings while going thru the balance process.

Thanks again for the suggestions and pointing out what is wrong with the setup.

Perry

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10-15-2005 04:24 PM  12 years agoPost 15
E30TECH

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Jefferson, New Jersey

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Girard Ibanez -

Point taken.

Thanks

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10-15-2005 06:02 PM  12 years agoPost 16
MicroDOC

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Goleta, CA

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Girard,
You have been teaching the proper servo setup technique for long enough now that you can do it in your sleep. I'm still waiting patiently for your book to come out!
Ron…

Experience is something you don't get until just after you need it!

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10-15-2005 06:28 PM  12 years agoPost 17
midwestpilot

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Crystal Lake, IL

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I like my links on top...
I crashed once with the rod underslung and it got knocked off by the landing gear breaking...with the rod on top it is more protected in a crash an may save an engine. like the very first pic posted.

In life there is no spacebar!

Rich Erikson AMA 6175

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10-15-2005 06:28 PM  12 years agoPost 18
MicroDOC

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Goleta, CA

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When it's released will you sign my copy for me? By the way, what are you doing here? Arn't you putting on a seminar in 15 minutes!
Ron…

Experience is something you don't get until just after you need it!

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10-16-2005 08:25 AM  12 years agoPost 19
PietervA

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New Zealand

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I suggest you swing your collective servo around, then reattach the servo horns. You'll have a more direct linkage with 90deg angles. Remember to check whether the servo needs reversing!

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