Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Tire Question  
User currently offlineTomh From United States of America, joined May 1999, 960 posts, RR: 2
Posted (13 years 8 months 1 week 5 days 1 hour ago) and read 952 times:

It used to be common practice for large military aircraft tires to have small bits of wire (almost like steel wool) embedded in the rubber. You made a mistake as soon as you put your hand on the tires, they were sharp (so I learned at a young age).

Is this type of rubber/metal technology used anymore on aircraft tires?

TomH

6 replies: All unread, jump to last
 
User currently offlineIainhol From , joined Dec 1969, posts, RR:
Reply 1, posted (13 years 8 months 1 week 4 days 23 hours ago) and read 910 times:

I think you are taking about the cord, which should not be showing, it shows extensive wear on the tire, and the tire should be replaced!
Iain


User currently offlineA/c train From United Kingdom, joined Jun 2001, 501 posts, RR: 4
Reply 2, posted (13 years 8 months 1 week 4 days 23 hours ago) and read 909 times:

Right on iainhol!

User currently offlineTomh From United States of America, joined May 1999, 960 posts, RR: 2
Reply 3, posted (13 years 8 months 1 week 4 days 17 hours ago) and read 889 times:

I should have been more specific, sorry. I am not talking about the cord, but rather about metal fiber imbedded in the rubber compound at the time of manufacture. It is (or was) present on brand-new tires that showed no cord at all.

Regarding cord. It is not true that simply showing cord means immediate replacement of the tire. In military aviation there are criterion used based on the color of the cord showing. This determines when to replace the tire, as different colors indicate different wear depth. Of course this is providing no other problems are evident. Hopefully someone can back me up on this, as it has been a few years....
TomH


User currently offlineIainhol From , joined Dec 1969, posts, RR:
Reply 4, posted (13 years 8 months 1 week 4 days 17 hours ago) and read 882 times:

Tom, Thanks for clarifying, however unfortunately I do not know your answer. Regarding the cord, I have yet to fly a military jet, however in general aviation it is a big big no no!
Iain


User currently offlineTomh From United States of America, joined May 1999, 960 posts, RR: 2
Reply 5, posted (13 years 8 months 1 week 4 days 2 hours ago) and read 861 times:

Iain,

I've been thinking about what I said regarding military tire wear. It may be that the color changes are due to specific wear indicators built into the tire and they may not be the cord itself. I think that the cord is a foundation around which the rubber is shaped, and I can't think of a reason why you would want to start wearing through that area deliberately.

But it is very common to see fighter aircraft tires that appear horribly worn, at least to the my uneducated eye, but in fact are well within specs according to the crew chiefs to whom I talked.

If line people today do not see heavy aircraft tires that have wire embedded in them, I guess what I am describing is an obsolete technology. It was very common for large aircraft tires to have what appeared to be sharp bits of steel wool all over the ground contact area.

Aren't there any ex-SAC types out there who can help me out with this?
TomH


User currently offlineChdmcmanus From United States of America, joined Mar 2001, 374 posts, RR: 2
Reply 6, posted (13 years 8 months 1 week 3 days 18 hours ago) and read 852 times:

TomH, Hi, I'm a AMC (formerly MAC) Flight Engineer, and your second line is exactly correct concerning the cord body. The wear indicators are usually interlayered fabric, and the cord body itself is metal. I haven't seen any exterior metal on the line in about 5 years, but I know exactly what your talking about. The heavies had a rash of incidents related to tire failure in the early 90's that led to a lot of changes, mostly in the area of wear limitations and retread capabilities, but I believe they also changed manufacturures to. I haven't seen any of the old "indians" or "internationals" on the line lately, mostly "BF Goodrich" and "Goodyear". Maybe this has something to do with it?


"Never trust a clean Crew Chief"
Top Of Page
Forum Index

Reply To This Topic Tire Question
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
Tire Question posted Mon Mar 19 2001 12:58:19 by Tomh
Aircraft Tire Trivia Question! posted Tue Apr 13 2004 01:40:09 by Marc Kobaissi
Continental 737-300 Cockpit Question posted Fri Nov 24 2006 08:26:31 by Artsyman
Headwinds Question posted Sun Nov 12 2006 10:36:39 by FCA787
B767-200 Fuel Consumption Question posted Sun Nov 12 2006 07:06:31 by Jetline
Concorde Gear Question posted Tue Nov 7 2006 18:38:10 by EHHO
Lockheed L-2000 Question posted Sat Nov 4 2006 00:06:17 by Blackbird
SXM Runway Length Question... posted Fri Nov 3 2006 19:51:57 by T7ILS13LatJFK
NonEngineer's Question About Fuel In Ceiling posted Thu Nov 2 2006 18:32:01 by SpeckSpot
Embraer Question posted Sun Oct 29 2006 09:00:35 by Flametech21

Sponsor Message:
Printer friendly format