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Blade 450 Blade 450 Helicopters Information and Help


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Old 12-28-2011, 02:51 PM   #1 (permalink)
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Default Link lengths from the developer

Some have had the same question as I did about the lengths of the links on the B450.

Well got this today and thought I'd share:

Hello Palmer,
Below is the response from Mikel Graham, the developer for the 450 3D.
Here are approximate values, but the videos should be explanation
enough.
Subtrim the control arms first until they are level, then adjust the
linkages.

Left swash link: 55.73 mm
Front swash link: 49.74 mm
Right swash link: 43.95 mm
Swash to main blades: 61.38 mm

Hope this may help someone else.
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Old 12-28-2011, 03:01 PM   #2 (permalink)
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Very nice...
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Old 12-28-2011, 03:07 PM   #3 (permalink)
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That's pretty damn precise for ya!
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Old 12-28-2011, 05:26 PM   #4 (permalink)
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Great piece of detail info. for all blade users. Are left and right links as viewed from
the front of the heli or from the tail?
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Old 12-28-2011, 05:40 PM   #5 (permalink)
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Quote:
Originally Posted by rotorwing cris View Post
Great piece of detail info. for all blade users. Are left and right links as viewed from
the front of the heli or from the tail?
Viewed from the tail looking toward the nose since the left servo is underneath the right.
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Old 03-04-2012, 09:33 AM   #6 (permalink)
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I've seen this discussed but don't remember a definitive answer. How is one to measure these lengths? Total length end to end? Just the metal part showing? Middle of the link "hole"? Some other point?

Thanks!
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Old 03-04-2012, 10:43 AM   #7 (permalink)
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I've been going from over all length, outside to outside of the links....gets you pretty close.
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Old 03-04-2012, 10:58 AM   #8 (permalink)
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Thanks!
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Old 03-04-2012, 06:42 PM   #9 (permalink)
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Thalios should add these values to the bible. It may help someone one day.
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Old 03-04-2012, 08:13 PM   #10 (permalink)
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A link to this thread is in the bible.
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Old 06-30-2012, 08:57 PM   #11 (permalink)
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Quote:
Originally Posted by 72mhz View Post
Some have had the same question as I did about the lengths of the links on the B450.

Well got this today and thought I'd share:

Hello Palmer,
Below is the response from Mikel Graham, the developer for the 450 3D.
Here are approximate values, but the videos should be explanation
enough.
Subtrim the control arms first until they are level, then adjust the
linkages.

Left swash link: 55.73 mm
Front swash link: 49.74 mm
Right swash link: 43.95 mm
Swash to main blades: 61.38 mm

Hope this may help someone else.
is this:
a. end to end?
b. center ring to center ring?
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Old 06-30-2012, 09:53 PM   #12 (permalink)
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I measured mine as overall length with my calipers, and it worked out very well - within a few thousandths either way - and my swash ended up right around 15mm.
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Old 07-05-2012, 02:36 PM   #13 (permalink)
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Noob here, what is meant by: 'Subtrim the control arms first until they are level, then adjust the
linkages.'?
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Old 07-06-2012, 11:11 AM   #14 (permalink)
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Quote:
Originally Posted by TrEsPaSS View Post
Noob here, what is meant by: 'Subtrim the control arms first until they are level, then adjust the
linkages.'?
I'm new too, but I believe the idea is to get your servo arms properly centered first, as you don't want to compensate for off center by changing link lengths. Making sure your transmitter is set correctly, you first physically remove the arm and put it on as close to center or level as the teeth will allow. Then you adjust your subtrim in the menus of your controller to fine tune it.
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Old 07-06-2012, 11:29 AM   #15 (permalink)
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Quote:
Originally Posted by TrEsPaSS View Post
Noob here, what is meant by: 'Subtrim the control arms first until they are level, then adjust the
linkages.'?
Subtrim is a menu in your tx for getting your servo arms at 90. Trim is the switches around your left and right sticks to dial your bird in, assuming its a FB setup.
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Old 07-07-2012, 12:17 AM   #16 (permalink)
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1. Adjust the servos arm close to 90 deg as possible in relation to the main shaft. If a bit off, adjust using subtrim.
2. Set all 3 cyclic servos so that all move in the right direction...AIL/ELE/PITCH/TT
2. Swash levelling: use a levelling tool
Mid : adjust the linkages until the swash is level (flat horizontally). If just a bit off, use
subtrim.
Hi & Low : use Adv Travel

...........
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Old 08-29-2013, 05:33 PM   #17 (permalink)
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I just measured mine:

Left swash link: 2.16" overall/outside
Front swash link: 1.96" overall/outside
Right swash link: 1.72 in overall/outside
Swash to main blades: 2.47" overall/outside
2 parallel links connected to front servo: 2.56" center to center

Last edited by dchance; 08-29-2013 at 07:53 PM..
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Old 09-01-2013, 11:09 PM   #18 (permalink)
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Quote:
Originally Posted by TrEsPaSS View Post
Noob here, what is meant by: 'Subtrim the control arms first until they are level, then adjust the
linkages.'?
First to all others. Sorry for posting the URLs again. However, helped me a lot!

http://www.rchelicopterfun.com/swashplate-setup.html
http://www.rchelicopterfun.com/rc-helicopter-tips.html
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Old 09-08-2013, 07:01 PM   #19 (permalink)
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Quote:
Originally Posted by cpmboy View Post
1. Adjust the servos arm close to 90 deg as possible in relation to the main shaft. If a bit off, adjust using subtrim.
2. Set all 3 cyclic servos so that all move in the right direction...AIL/ELE/PITCH/TT
2. Swash levelling: use a levelling tool
Mid : adjust the linkages until the swash is level (flat horizontally). If just a bit off, use
subtrim.
Hi & Low : use Adv Travel

...........
Before you do any of that, disconnect your motor, hook up your battery, and set your collective to midstick. You need to level your swash at midstick, so you can set 0* pitch.

You also want to have a linear pitch curve for levelling your high and low travels. If your Throttle Hold pitch curve is not linear, either reprogram it for swash setup, or turn TH off (which is why you need to disconnect your motor!)
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Old 07-20-2015, 12:59 PM   #20 (permalink)
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I was adjusting my mechanical and got all messed up. I needed to get linkage rod lengths to get back to normal. Helifreak is the bomb!!! Thank you to 72mhz and dchance for there great info.
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