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450 PRO Class Electric Helicopters 450 PRO Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar.


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Old 05-13-2010, 12:36 AM   #41
RMKinWI
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I am building the 450Pro following the videos to the letter. I just bought my kit it has the 780 gyro. When building the long links my manual says they should be 20.9mm inside and 43.5mm center to center. In the videos Bob builds the long links to 23mm inside. What should I do? I download another manual and it says 23mm. Maybe the manual has been updated?
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Old 05-13-2010, 08:38 AM   #42
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I would follow Bob's recommendations.
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Old 05-28-2010, 04:34 PM   #43
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I am soo glad I found this forum, I am building a T-Rex 450 Pro using Bob's awesome videos. This is my first direct drive tail rotor, and am learning a lot!
Dan

Last edited by dandnl333; 05-28-2010 at 09:36 PM.. Reason: Removed incorrect info
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Old 05-29-2010, 10:56 AM   #44
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Bob i would like to thank you for the video's! Just build my trex 450 pro (first heli ever) with your video's and it was easy . I only need to setup my transmittor and then i am ready to go.


Greetings from the Netherlands!
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Old 06-12-2010, 03:23 PM   #45
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Also found the videos very helpfull.

The newer Align 450 PRO combo uses the GP780 gyro. (Not the GP750 any more like Bob used in his video.)
If you do the flip grip mod there is no need to put the ballink on 8 mm.
This is needed with the older GP750 and not with the GP780 gyro.

Other than the rudder control rod being 6 mm too short, no problems here.
(Should be 336 mm, ALIGN FIX THAT PLEASE.)

And yes, it's a great flying bird!
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Old 10-04-2010, 12:38 PM   #46
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Thanks for these! Great job!
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Old 10-28-2010, 10:21 AM   #47
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I am also in the middle of my new build. Was wondering if the recent kits were any different from Bob's vids from last year. Thanks Bob and helidude!
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Old 10-28-2010, 03:33 PM   #48
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I am unaware of any drastic changes on the Pro from last year to now.

Bob
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Old 10-29-2010, 10:23 AM   #49
DMEN
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Thanks Bob. I am using your videos and glad to have watched all of them before beginning assembly. It saved time because I went ahead and did the flip grip the first time around
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Old 12-14-2010, 10:43 AM   #50
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hi everyone
exist a correct position for the tail rod guides on the boom ?
in the pictures i see that everyone place them when prefer
but perhaps is better a solution where the rod flexes less then possible

it's a good idea separate in 3 identical part the rod ...
or is better leave a longer part free near the servo and place the guides more back to have only two identical part of the rod ??

i don't know if i explane well, sorry for the lack of english
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Old 12-29-2010, 08:14 PM   #51
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Big Thanks
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Old 02-20-2011, 09:07 AM   #52
yoi.nick
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hi BOB! hi know there are lots of lipos out there, do you have a favourite for your T rex 450 pro! ? gonna buy an anti taco too> seems very sensible!
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Old 04-10-2011, 09:07 AM   #53
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My post has moved to techroom
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Old 04-27-2011, 05:48 AM   #54
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Thanks for the Videos Bob, fantasitic, really loving the tail grip flip mod.

DJ
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Old 04-30-2011, 07:05 PM   #55
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sorry
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Old 05-06-2011, 02:16 AM   #56
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Quote:
Originally Posted by DJ Jakarta View Post
Thanks for the Videos Bob, fantasitic, really loving the tail grip flip mod.

DJ
My thanks also ..... just one query re the grip-flip.

Is it equally advisable/beneficial to do the flip when using a BeastX contoller rather than the GP780?
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Old 06-24-2011, 04:15 PM   #57
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Default gyro channel

I'm setting up the tail and in your "Setting up the tail and gyro STOCK" video you turn the gear channel down to 40%. Do you have the gyro plugged into the gear channel? I thought I was suppose to plugged in to Aux2 (that's what the manual shows).

Thanks!
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Old 09-07-2011, 02:11 PM   #58
jetfinn
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Happy to find this site, i have bought trex 450 and trex700 now. like to build these things
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Old 10-04-2011, 10:18 AM   #59
cpmboy
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Quote:
Originally Posted by helidude71 View Post
Also found the videos very helpfull.

The newer Align 450 PRO combo uses the GP780 gyro. (Not the GP750 any more like Bob used in his video.)
If you do the flip grip mod there is no need to put the ballink on 8 mm.
This is needed with the older GP750 and not with the GP780 gyro.

Other than the rudder control rod being 6 mm too short, no problems here.
(Should be 336 mm, ALIGN FIX THAT PLEASE.)

And yes, it's a great flying bird!
mine uses the GP780 also and I use the 1st hole (close to centre skrew) on the tailservo arm..Now I'm into tail and gyro setup. So...meaning if I do the 'FLIP-THE-GRIP thing....I dont need to adjust the ball links right?......
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Old 10-04-2011, 10:29 AM   #60
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That is correct. Check centering of tail anyways after completion and push rod and links are not binding
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