RunRyder RC
WATCH
 1 page 1110 views POST REPLY
HomeAircraftHelicopterThunder TigerRAPTOR 50 › Boom crack at tail
02-02-2013 01:07 AM  5 years agoPost 1
mustang67ford

rrKey Veteran

Central Pennsylvania

My Posts: All  Forum  Topic

On my Titan 50 SE, I noticed I had a little crack on each side of the hole in the tail boom where the gear box mounts. It would be the hole on the same side as the tail rotor. There is nothing else wrong with the boom so I would hate to replace it. The cracks are about 1/8" long on the upper and lower side of the hole. There is no damage to the tail case. I put a little jb weld on each side and smoothed it out so it is only in the crack. I can't see the tail case going anywhere as the belt keeps inward pressure and the case secures the perimeter.

I did have a tail rotor strike this past summer though it was minor. I just now took it apart to check the tail output shaft and that is when I found the crack. I replaced the tail shaft to be safe. It the old shaft was bent, it was not noticeable.

I doubt the tail strike caused this.

I thought I read about this someplace before about this being a problem, but can't find it.

Team HeliProz - Retired
AMA #513507
IRCHA #4011

PM  EMAIL  GALLERY  Attn:RR  Quote
02-02-2013 03:07 AM  5 years agoPost 2
JeffKollin

rrKey Veteran

Jenison, MI

My Posts: All  Forum  Topic

I had a set of out of balance tail blades that cracked 2 booms just as you say. It sounds as if something such as tail shaft or blades maybe your issue here.

PM  EMAIL  GALLERY  Attn:RR  Quote
02-02-2013 05:05 AM  5 years agoPost 3
mustang67ford

rrKey Veteran

Central Pennsylvania

My Posts: All  Forum  Topic

I was thinking it had something to do with vibration so I changed the tail shaft just to be safe. The bearings are good, on about 30 flights on the heli. I am going to still use the boom as the cracks are very minor. My tail blades are carbon.

Team HeliProz - Retired
AMA #513507
IRCHA #4011

PM  EMAIL  GALLERY  Attn:RR  Quote
02-02-2013 05:16 AM  5 years agoPost 4
AKPhill

rrApprentice

Soldotna Alaska United states

My Posts: All  Forum  Topic

take a small drill bit just a tad bigger than the crack and drill a hole at the end of the crack this will help keep it from cracking anymore
just a suggestion

AKPhill

PM  EMAIL  GALLERY  Attn:RR  Quote
12-09-2013 02:07 AM  5 years agoPost 5
mustang67ford

rrKey Veteran

Central Pennsylvania

My Posts: All  Forum  Topic

Just an update, JB weld worked all summer to repair the minor boom crack. Flew the heli all this past summer and the crack did not get worse. I had smeared jb weld in the crack when i repaired it. I am going to replace it now though as part of my winter heli maintenance and keep this boom as a backup.

Team HeliProz - Retired
AMA #513507
IRCHA #4011

PM  EMAIL  GALLERY  Attn:RR  Quote
09-06-2015 06:30 PM  3 years agoPost 6
mustang67ford

rrKey Veteran

Central Pennsylvania

My Posts: All  Forum  Topic

Well, it happened again. Another boom crack. This time it sheared off in a perfect circle right thru the centerline of the 2 holed for the tail case alignment. Took the tail case apart and it wqs completly sheared in half. I had noticed lately the tail case would be at a slight angle but didn't think anything of it. Not undersranding why this is happening.

Team HeliProz - Retired
AMA #513507
IRCHA #4011

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 1110 views POST REPLY
HomeAircraftHelicopterThunder TigerRAPTOR 50 › Boom crack at tail
 Print TOPIC  Make Suggestion 

 0  Topic Subscribe

Friday, December 14 - 11:11 am - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

The RC discussion world needs to consolidate. RR is now one choice for that. Its software is cutting edge. It hosts on-topic advertising. Help RR increase traffic buy making suggestions, posting in RR's new areas (sites) and by spreading the word.

The RunRyder Difference

• Category system to allow Rep/Vendor postings.
• Classifieds with sold (hidden) category.
• Classifieds with separate view new.
• Answer PMs offsite via email reply.
• Member gallery photos with advanced scripting.
• Gallery photo viewer integrated into postings.
• Highly refined search with advanced back end.
• Hosts its own high end fast response servers.
• Hosts thousands of HD event coverage videos.
• Rewrote entire code base with latest technology.
• No off-topic (annoying) click bait advertising.
Login Here
 New Subscriptions 
 Buddies Online