Blade 200 SRX - a few questions ..

[smuir00]

Hi, a while ago bought a Blade 200 SRX after some advice i had received on here previously and have had a bit of a love hate relationship with it

My skill level is beginner ish so not sure if some of the problems are down to me or the model. It flyes lovely but I have found it fragile and have learnt to repair it frequently, so I purchased a Rakonheli aluminum and carbon mainframe for it in the hope of less future repairs.

After swapping everything over to the new frame and trying to fly it i'm finding that as soon as I open up the throttle both servos arms are moving downward the more i open it up .... as i close the throttle down and the revs drop at the last moment bother servos seem to 'pop' up back to where they should be.

This makes the model unflyable at the moment

Can anyone suggest what I may have done wrong ? or what is making the servo arms move when the stick is not being touched ?

Any help appreciated as i would love to get back to flying it again lol.

Many thanks, Simon

[tourerjim]

I assume you stripped it down to fit new frame, did you unplug the servos as its possible you've got them plugged back in wrong way.
My advise is to disconnect motors & swap them then see what happens before plugging motors back in.

[Euclid]

Hi Simon

sorry to hear you are having problems with your 200 and are finding it fragile. I love mine and wouldn't hesitate to recommend it to a beginner (much where I am at the moment). All the damage I ever seem to do in crashes is take a tooth or 3 out of the main gear wheel which I now treat as a sacrificial part.

Needless to say there is something well wrong with yours which you don't need me telling you. First thing I'd check is your rewiring. Looking up the arse of the heli at the receiver pins you have 7 outputs.

From the left the first vertical set is the bind port, this should be empty (try a rebind however). The next is the throttle o/p, top to bottom orange, red, black that are connected to the ESC. Third and 4th o/p go to the 2 servos, orange at top, black at bottom and the 5th o/p is a single yellow at the top that goes back to the ESC.

i can't see what else could be causing the problems other than a wiring SNAFU.

[smuir00]

Thanks for the 2 replies so far.

The wiring seems fine, when I have the model on the flat with the throttle closed the servos work fine and respond properly.

When i open up the throttle the problems start, the servo arms slowly lower..

When the throttle is then closed slowly and the rotor arms are nearly stopped then the servo arms return themselves to the correct position.

During all of this i have not moved the right stick at all (mode 2)

[tourerjim]

Thanks for the 2 replies so far.

The wiring seems fine, when I have the model on the flat with the throttle closed the servos work fine and respond properly.

When i open up the throttle the problems start, the servo arms slowly lower..

When the throttle is then closed slowly and the rotor arms are nearly stopped then the servo arms return themselves to the correct position.

During all of this i have not moved the right stick at all (mode 2)

Strange..! what tx are you using, if its the stock one just try to rebind it & see what happens.

[Euclid]

Stumped! Disconnect one servo at a time and see what happens.

[Dean airwolf]

Simon
Sorry to hear that your have trouble with yours.mine is up a tree and not coming down.But I got another 200srx today.
Do you live near a club so some one can give it a once over for you.stick with it m8.
I spent most of last night doing key hole surgery on 130x blade.No flying for a little while.
But am sticking with it because i will crack it.
Best Regards
Dean

[tourerjim]

Wished these heli's where about when i first start out, mega money back then.

[smuir00]

he he .. been tree climbing before .. lol

Am trying to start going to South Coast Helicopter Club so maybe someone there can point me in the right direction.

but no i will not give up with it ..

[honwal]

If you take off the rods on servo horn, gently move servo horn up and down, you should have 12o'clock at top and 6o'clock bottom play, make sure your swash plate is level after,

[Wasted]

Hello.

Apologies if you've already tried this but it sounds like you need to perform a trim flight. If you check the forum post below and locate the section on 'entering trim flight' there is a video of the problem and a description of the fix.

I had the same issue myself on mine, servos would activate making the disc tilt as soon as it spools up, drop the throttle to zero and they would level.

Junkman's Beginner's Guide to Repairing the Blade 200 SRX - RC Groups

The trim flight is a pain, I would recommend removing the main & tail blades or at least the mains ( and tethering it down if you leave the tails on). Contrary to the instructions you do not have to have the heli in the air during the trim flight just level (on the ground will do) for 30 second with the motor running.

[Andy Mc]

you probably have...but just make 100% sure your gears are not stripped, I've bench tested mine before and it seemed ok, but under load the servo's seemed to 'jump'.. in flight. new servo gears sorted my problem out.

[trexamanic]

you probably have...but just make 100% sure your gears are not stripped, I've bench tested mine before and it seemed ok, but under load the servo's seemed to 'jump'.. in flight. new servo gears sorted my problem out.

i had the same issue on my 130x and it was a gear

[Wasted]

I had the same problem on a 200srx, servos would activate causing the disk to tilt as soon as I applied the throttle, as soon as the throttle drops the servos return to normal.

This is fixable using the Trim Flight as covered in the following post under the section 'Incorrect Servo Canter Happens Only When Power is Applied During Take Off';

Junkman's Beginner's Guide to Repairing the Blade 200 SRX - RC Groups

You can remove the main blades and tether it down while doing the trim flight, the heli does not need to be in the air during trim flight, you just need the motor running for 30 secs or so and the heli level (ie. on the ground). Its a pain but works.