rrTV-PHOTO   New HD TV
HOME   rrTV-PHOTO   GALLERIES   MY GALLERY   HELP-FAQ
myHOME PM pmRR MEMBERS 787 ONLINE 19 EVENTS SEARCH REGISTER  START HERE
 
1 page424 viewsTOPIC CLOSED
XHELI.COM . Autography FlightPower . Advantage Hobby

.
.
e-Mikado Logo 400 500 600 > L5003d tail case
 
 
KDFI
Senior Heliman
Location: Lodi, Ca- USA

Hey guys, can someone help me out please

Went to maiden my L500 3d spool up was going great. Just when she got light on her skids the tail gave out, spun like a top and luckly the only damage was the tail blades and the tail case was not straight up and down anymore. I took apart the tail case and found the two half circles that lock the boom into the tail case were sheared off causing the case to twist. The half circle cutouts on the case were a little bent too. So I will replace the boom and tail case and tail belt pully becasue it suffered damage too.

What do you think caused this? There was no play in the tail shaft and I could swear I seated the case correctly on the booms half circles. Do you think using the 2 shims to take out the shaft play instead of one made the case sit incorrectly where the boom half circles meet the tail cases half circles?

thanks
09-16-2008 02:18 AM
 
 
laughingstill
Key Veteran
Location: Gainesville, Fl, USA

Could you hear the belt slapping inside the boom at all?

3DMP-E, Logo 6003D, Logo103D Carbon and Trex 450se Flyin Firefighter
09-16-2008 02:38 AM
 
 
KDFI
Senior Heliman
Location: Lodi, Ca- USA

no laugh couldn't hear the belt. Everything seemed cool, gyro was holding tail fine too. That's why I thought maybe the case wasn't tightened down tight enough or the spacers used to shim end play weren't really needed and made the case half circle indentions sit incorrectly in the booms guides. I thought it was seated right because I couldn't twist the tail case by hand, then again I probably didn't apply as much force as the tail does when it's being driven.
09-16-2008 04:01 AM
 
 
laughingstill
Key Veteran
Location: Gainesville, Fl, USA

Man I don't know what to think on this one. Was it hard to assemble at all?

3DMP-E, Logo 6003D, Logo103D Carbon and Trex 450se Flyin Firefighter
09-16-2008 04:41 AM
 
 
KDFI
Senior Heliman
Location: Lodi, Ca- USA

no, wasn't hard to assemble. got the parts ordered. I would hate to have this hapen in flight.

Besides the tail blades breaking off and the now deformed tail boom.

heres the damage. You can see where the half circles in the tail case broke off, and the ears broke off the slider assembly.

09-16-2008 05:18 AM
 
 
helicraze
Key Veteran
Location: Victoria - Australia

same thing happened to me, I put it down to rough landing boom first and assembly method. I put it together more carefully and no more problems. I ordered the carbon tail upgrade for next time if i ever need it. Its like the logo 600 open tail but designed for the 500.
09-16-2008 05:56 AM
 
 
Terrabit
Senior Heliman
Location: Seattle, WA - USA

This may be a dumb question but, do you think the belt might have been twisted beyond a quarter turn ... as in one and a quarter? What condition is the belt in? I suspect that the belt, for whatever reason, jerked the tail case into the boom sheering off the positioning ears. The rest of the damage to the slider and blades probably happened durring the piro unless it all happened durring the piro. Were all of the linkages still intact except for the slider?

Mikado, Kontronik, Scorpion, JR, FP
09-16-2008 06:17 AM
 
 
KDFI
Senior Heliman
Location: Lodi, Ca- USA

Hey Terra,

I don't think the belt was over twisted. The rotor spun freely in the correct direction. DO you guys think my 401 could be bad as head speed increases? Or if a gyro goes bad it just goes bad?

I was thinking maybe the gyro holds fine as heli starts to spool up but, around getting light on the skids stage maybe the gyro stops holding?
09-16-2008 02:24 PM
 
 
rcman
Veteran
Location: Logan, Utah

I have had this happen a lot on my L500, here is what I ended up doing.

I took one of the small flat head screws that you use for the balls to mount them to a servo arm. Drilled a hole right were the plastic shoulder was on the tail housing, put the bolt through the hold with the head on the inside of the tail box and then locktited a nut on the outside, now the half moon shape in the boom with rest up against the metal bolt head and will not move.

It works very well for me. If you need some pictures I can take them tonight


David
09-16-2008 05:05 PM
 
 
KDFI
Senior Heliman
Location: Lodi, Ca- USA

that would be great David. Thanks.
09-16-2008 05:56 PM
 
 
Jag72
Elite Veteran
Location: 20 minutes south of Boston Mass...

Solution...

Here's the Best solution...

Get the Carbon tail box

Those plastic tail cases SUCK!

although rcman's solution does seem like a great fix...I got tired of fu**ing around with those cheesy plastic tail cases...

I personally don't use anything but the carbon tailcases on my logos..
09-16-2008 06:53 PM
 
 
rcman
Veteran
Location: Logan, Utah

Jag,

LOL yah I am sure that would work too


David
09-16-2008 07:00 PM
 
 
rerazor
Elite Veteran
Location: Mich.

"Thru bolt" the case or get the CF unit.
09-16-2008 08:08 PM
 
 
Al Austria
Key Veteran
Location: Gainesville, FL

I don't have any experience with either tail setup, or even the heli itself, but I know the Century Swift metal tail upgrade works very well on the Logo 500. I met a fellow up in Jacksonville who uses this setup on his 500 and he said he liked it better than even the Mikado carbon tail upgrade. Here is a video of me flying his 500 with the Century tail: http://www.vimeo.com/1524163

On my Swift 620SE, it's an incredibly solid setup. You can see what it looks like here: http://www.heli-world.com/detail.aspx?ID=8722. Might be worth looking into.

RReModels
Century Field Rep
Always remember you're unique, just like everyone else.
09-16-2008 11:09 PM
HOMEPAGE  
 
 
pjpg
Heliman
Location: Georgia

I dont no if that part has been updated yet but there was a thread on the freak that stated the tailcase would be revised. That was back in June.
09-16-2008 11:34 PM
 
 
KDFI
Senior Heliman
Location: Lodi, Ca- USA

GUYs I really screwed up I think. I am a freakin nimrod!!! I had the direction switch on the gyro set to normal and in the tx I had the rudder Ch4 and Aux 2 ch 7 for the sensor REVERSED. Won't know the outcome til I get the parts.

Man I am sorry for starting this thread and wasting everyones time.
09-17-2008 03:02 AM
 
 
Al Austria
Key Veteran
Location: Gainesville, FL

Definitely not a waste of time, glad you figured out what the problem was.

RReModels
Century Field Rep
Always remember you're unique, just like everyone else.
09-17-2008 03:06 AM
HOMEPAGE  
 
 
KDFI
Senior Heliman
Location: Lodi, Ca- USA

thanks to all you guys for your input. It's good to know theres a great bunch of people out there willing to help from all over the planet. Parts are on there way soon as the birds back together I will post the out come.

I am going to stick with the plastic case because it was my fault the tail case broke IMO.
09-17-2008 06:11 AM
 
 
lloyd
Key Veteran
Location: Port Elizabeth,South Africa

KDFI glad you sorted.

Theres nothing wrong with the plastic as Ive had 200 flights on mine with 2 crashes and its still solid......

lloyd

future of nitro is ELECTRIC
09-17-2008 06:24 AM
 
 
1 page424 viewsTOPIC CLOSED
Revolution Models . CarbonXtreme . Midland Helicopters

.
.
e-Mikado Logo 400 500 600 > L5003d tail case
 PRINT TOPIC Advertisers 

Subscribe to This Topic

Tuesday, December 2 - 1:53 am - Copyright © 2000 - 2008 runryder.com | email | link to rr | runryder needs cookie