What to do ?

splitboarder · 09-06-2012, 08:24 AM

Have you ever owned a heli you cant seem to fix? I bought a used Maxi Joker2. I loved it when I got it but I have been chasing a tail vibe ( more like a shake) for months. I have had the heli for over a year and I have had it dailed in for maybe 10 flights out of about 40. I do know how to repair helis, been at this six years now and I do AP with dji picloc yada yada but This think is kicking my butt.

I need a Maxi Joker mechanic I refuse to give up hope.

Finless?

SamCassidy · 09-06-2012, 08:50 AM

[insert echo sound]

splitboarder · 09-06-2012, 09:45 AM

I have a MJ2 I bought used . I have had it for about a year. It has been a love/hate relationship. I seem to always have a tail shake. I did get it smooth for a few days then my rx lost signal and I sat it down ina sand lot with what I thought was minimum damage.

I would relly, really like to use this heli as an AP ship.
but I cant seem to get rid of the tail vibe. I think Im a pretty good heli mechanic but this is driving me nuts

I have replaced
main shaft
tail shaft
tail rotor shaft
tail gear
shaft#747 that drives the tail belt
flybar
feathering shaft ect.
I hate to put this bird on a shelf, but it looks like its heading that way. before I give up does anyone have suggestions?
Im going to fully disassymble the heli. Check all shafts and bearing replace anything that even looks questionable. But Im affraid I staill wont get rid of it

Can someone Help ? In person or via video. I live in san Diego and wil drive to where ever to get help

Other questions
How tight should I run this belt? I know what the manual says but some helis like the belt really tight and in others that makes vibe
Rotor blades - does the MJ2 like them tight or really tight ( 700mm right now, waiting on new 800mm)
tail blades- tight or loose?

So, can someone lend a hand before i self this bird?

Thanks

Mercuriell · 09-07-2012, 09:38 PM

If you haven't tried different tail blades try x2-3 different makes and sizes - give some 95 Radix a go. Try some different tail grips or even a whole different tail assembly. If you are running VBAR then check your vibe spectrum for clues. It's alsmost certainly in the tail rotor rather than further forward.

splitboarder · 09-09-2012, 05:16 PM

Thanks John. Im running a flybarred head so no help with the v-bar. I do notice changes with different torque settings on the tail roto blade tightness. I also thing Im running the belt too tight

09-06-2012, 08:24 AM	#1
splitboarder Registered Users Join Date: Sep 2008 Location: San Diego, CA	What to do ? Have you ever owned a heli you cant seem to fix? I bought a used Maxi Joker2. I loved it when I got it but I have been chasing a tail vibe ( more like a shake) for months. I have had the heli for over a year and I have had it dailed in for maybe 10 flights out of about 40. I do know how to repair helis, been at this six years now and I do AP with dji picloc yada yada but This think is kicking my butt. I need a Maxi Joker mechanic I refuse to give up hope. Finless?

09-06-2012, 08:50 AM	#2
SamCassidy Registered Users My HF Map location Join Date: Jan 2012 Location: Eastern North Carolina	[insert echo sound] __________________ Compass Atom 550: SK540 / DS510 / KingMax 5308MDHV / Castle Talon 90 / KBDD Tail / Mavrikk 515 VST Main Blade mCpx / Nano Cpx mild BL - Skookum Field Rep - The Official Pistol Gang - Mavrikk Rep - ) :>

09-06-2012, 09:45 AM	#3
splitboarder Registered Users Thread Starter Join Date: Sep 2008 Location: San Diego, CA	Need advice I have a MJ2 I bought used . I have had it for about a year. It has been a love/hate relationship. I seem to always have a tail shake. I did get it smooth for a few days then my rx lost signal and I sat it down ina sand lot with what I thought was minimum damage. I would relly, really like to use this heli as an AP ship. but I cant seem to get rid of the tail vibe. I think Im a pretty good heli mechanic but this is driving me nuts I have replaced main shaft tail shaft tail rotor shaft tail gear shaft#747 that drives the tail belt flybar feathering shaft ect. I hate to put this bird on a shelf, but it looks like its heading that way. before I give up does anyone have suggestions? Im going to fully disassymble the heli. Check all shafts and bearing replace anything that even looks questionable. But Im affraid I staill wont get rid of it Can someone Help ? In person or via video. I live in san Diego and wil drive to where ever to get help Other questions How tight should I run this belt? I know what the manual says but some helis like the belt really tight and in others that makes vibe Rotor blades - does the MJ2 like them tight or really tight ( 700mm right now, waiting on new 800mm) tail blades- tight or loose? So, can someone lend a hand before i self this bird? Thanks

09-07-2012, 09:38 PM	#4
Mercuriell HF Support My HF Map location Join Date: Sep 2006 Location: QLD, AUSTRALIA	If you haven't tried different tail blades try x2-3 different makes and sizes - give some 95 Radix a go. Try some different tail grips or even a whole different tail assembly. If you are running VBAR then check your vibe spectrum for clues. It's alsmost certainly in the tail rotor rather than further forward. __________________ John

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09-09-2012, 05:16 PM	#5
splitboarder Registered Users Thread Starter Join Date: Sep 2008 Location: San Diego, CA	Thanks John. Im running a flybarred head so no help with the v-bar. I do notice changes with different torque settings on the tail roto blade tightness. I also thing Im running the belt too tight