View Full Version : Rappy 90 SE
10-06-2008, 08:49 PM
Well, Almost done. Wish I had more time to work on her...Hopfully maiden this week!! <br>
10-06-2008, 08:55 PM
Almost too purdy to fly...... naw.....:thumbup:
10-06-2008, 09:01 PM
Nice looking 90SE dude. Where did you get the canopy from? I would be very interested in one like that. :thumbup:
10-06-2008, 09:12 PM
Thanks guys, I know it's not going to stay purdy for long lol. Well I gonna try and keep it up.
Badger, I got it from canopy fx. He did a great job on the paint. But used a labeler for my name, I wasn't too happy abou that!! Oh well, Nothing a couple of stickers can't cover.
10-10-2008, 10:07 PM
Very nice looking bird.
However, I HIGHLY recommend that you protect your electronics with more vibration-absorbing materials. My friend crashed his R903D due to a regulator failure(ReactorX), and when he sent the unit back he was told that the regulator had been subjected to heavy vibrations. I have the exact same machine as him, same electronics and no problems yet, but my electronics are protected with quarter inch foam. Those 90s vibrate A LOT.
10-11-2008, 04:02 PM
Thanks for that suggestion Max. A buddy of mine said the same thing and he has a 700. I have an R30 V2 that all Im using is thick HD velcro and zip ties. Never had a problem in the past 2 years on 72 mhz, Though its not a 90. This is my first 90 so im new to his class, I'll take all the advice I can get. I have already done the fix. Im using some hitec rubber/foam flight preserver (3.5 mm thick) and sandwiched it with double sided HD tape (gyro tape) 1.5 mm to the devises and the frame (6.5 mm thick total). Doesnt look as good as before but I would rather be safe than sorry. Thanks, Again. Lou
10-11-2008, 04:40 PM
Well just to prove how these things vibrate... I'm just back from the field and I CRASHED my 90 3D.
The setscrews that holds the tail rotor on the tail rotor shaft vibrated loose. The heli started pirouetting so I hit throttle hold and made a somewhat succesful auto. However blades hit the tail boom so I broke the boom and driveshaft. Seems to be the only damage so far (blades seems ok)
So I guess I'll have to check these screws more often.
Pictures to come (heli is still in the car!)
10-11-2008, 04:46 PM
Hi... just reading. I have my gyro G11 unit, 1/8 foam sticky tape mounted on the top (where he has his receiver)....... would the Gy11 unit stand up well to vibration mounted like this? has anyone had faliure of the GY11 cause of vibs??
I'm having intermittent tail glitch problem & don't know what is causing it!
10-11-2008, 05:07 PM
I'm not familiar with this G11 gyro. Check your instructions. Usually the sensor has to be mounted with a specific tape (such as the futaba gyros...). Sensors such as the Futaba ones are vibration insulated, that's why they are mounted with such a thin tape. Again check the instructions that came with your gyro.
A lot of things could cause tail glitch... Make sure there is no binding in the tail mechanism. disconnect the pushrod from the ail, and see if the tail is smooth. Then disconnect the pushrod from the servo, and with it still disconnected from the tail, make sur it moves freely in the pushrod holders (or whatever they are called...Tail rod guides maybe???).
Make sure the tail rotor is well secured to the tail shaft (guess why I suggest this?). And check your gyro settings, the gain might need adjustments.
An improperly tuned engine can cause lots of vibration and will cause tail glitches... And make sure all the shafts are aligned ( clutch vs engine, etc...).
Just some ideas...
10-11-2008, 05:08 PM
Also last week a guy had trouble with his tail... The tail rotor shaft was slightly bent...
10-11-2008, 05:11 PM
Awwwww crap, That sucks Max. Hope nothing else is broken!
I think I have OCD, I cant stop checking my screws and lockite lol. I think thats why it's taking me so long to finish here.
10-11-2008, 05:14 PM
Also I just weighed my 90 and in came in at 12.6 lbs with everything. Is this the norm?
Sure feels heavy compared to my R30........!
10-11-2008, 05:16 PM
the gyro I'm talking about is the futaba GY 611.... checked it through but, the glitch is not due to any loose mechanics
10-11-2008, 05:31 PM
I haven't even fired up my 90. I did a low power range check with my 12z and it passed. No glitches, I even did it though my garage door! Makes me feel a litle safer. I took all my plugs apart to make sure they were crimped correctly. I have had a failure before because of a plug was shorting and crashed. But it turned out to be one servo connector wire that was not crimped. Kinda hard to trust connectios when something like that has happen before.
10-17-2008, 08:35 PM
Thats an awesome looking heli, Im actually thinking of swapping for a raptor 90 std..
12-29-2008, 07:58 PM
Nice heli! Whats the little cable i can see attached to the rear landing gear?
12-29-2008, 10:06 PM
Xbrute, Thanks mate! I'm very proud of her, lol.
That's my flag pin for the arizona regulator. Regulates 4.8 volts to gyro and tail servo and adjustable voltage 4.8~6.0 to the rest of he system. I have put 4 gallons through it running at 1850~1900 rpms without any vibrating issues. Tracks like it's on rails and flys better inverted than upright. I'm very happy I got this instead of the 700, Even though it's a little heavy. also the servos are not connected directly to the swash and have a better chance of surviving a crash. I'm not hard core 3D pilot so the latency of controling the swash with this set up is no problem for me. I probably could not tell the big diffrence for someone that is into stickbanging.
12-29-2008, 11:47 PM
:YeaBaby:Thanks for the reply corona007 i am just in the last stages of putting my 90 std together after converting it back from a scale MD500 which i bought s/h. So far they are a easy heli to work on having had a Evo 50 first up. Its a little difficult getting the DX7 setup but the more i fiddle with the whole setup the easier it is to understand. I love the way you have set yours up, reminds me of when i used to build drag cars and the detail involved. Hope you have heaps of fun, i know i am!
12-29-2008, 11:57 PM
Don't forget to get some pictures and post them when your done, We would love to see!
02-06-2009, 10:47 AM
That looks sharp..... I just picked up a used 90 ... I would like to get an open tail case like yours... where did you get it? or is it stock on the SE?
02-06-2009, 02:08 PM
The open Tail box is from Elevated R/C , You can get them from Heliproz.com
Elevated R/C also came out with new Alum. blade grips . :thumbup: