| LOST JEEPS http://www.lostjeeps.com/forum/phpBB3/ |
|
| A note on spares http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=8&t=38278 |
Page 1 of 1 |
| Author: | InCommando [ Tue Dec 16, 2008 2:32 pm ] |
| Post subject: | A note on spares |
I have seen numerous pictures on here showing people with lifts and tires that are 2"-3" taller than the spare they still have hanging on the back. You guys know never to use that smaller spare, especially in 4wd, right? Just making sure before you end up picking up pieces of your aluminum transfercases up off of the ground. |
|
| Author: | tommudd [ Tue Dec 16, 2008 4:47 pm ] |
| Post subject: | |
Now you went and ruined all the fun 
One of the "toy" KJs I have has at least 44s on it with a what looks to be a 6.00 X15 spare will that work? 
Seriously I have seen it a lot as well and cringe when I think what may happen, of course right now I am running 265-70s with a 245-75 spare but they are within .01 of each other |
|
| Author: | Robbrez [ Tue Dec 16, 2008 5:29 pm ] |
| Post subject: | |
tommudd wrote: Now you went and ruined all the fun
One of the "toy" KJs I have has at least 44s on it with a what looks to be a 6.00 X15 spare will that work? Seriously I have seen it a lot as well and cringe when I think what may happen, of course right now I am running 265-70s with a 245-75 spare but they are within .01 of each other id assume that would be fine |
|
| Author: | tommudd [ Tue Dec 16, 2008 5:51 pm ] |
| Post subject: | |
Robbrez wrote: tommudd wrote: Now you went and ruined all the fun One of the "toy" KJs I have has at least 44s on it with a what looks to be a 6.00 X15 spare will that work? Seriously I have seen it a lot as well and cringe when I think what may happen, of course right now I am running 265-70s with a 245-75 spare but they are within .01 of each other id assume that would be fine Yep know it will be fine just playing with everyone, worked in the tire business too long to do anything "real" stupid 
|
|
| Author: | Robbrez [ Tue Dec 16, 2008 6:04 pm ] |
| Post subject: | |
|
|
|
| Author: | Albert [ Tue Dec 16, 2008 8:06 pm ] |
| Post subject: | |
oh man.......ya mean I gotta take my lawn mower tire off the back cause it won't work......geeeeezzzzzz |
|
| Author: | jeepskate [ Wed Dec 17, 2008 12:39 am ] |
| Post subject: | |
Well, I haven't seen anyone whose spare is two FEET three inches smaller 
|
|
| Author: | InCommando [ Thu Dec 18, 2008 3:48 am ] |
| Post subject: | |
try 2"-3". Proofreading not is my strong point As Tom knows, many tires of the same size & brand can be over .1" off of each other, but when you go from a 235/70/16 to a 245/75/16 or bigger, they are probably getting into the danger zone. Width matters not, only diameter. Maybe I should have kept quiet as sometimes the carnage pics postings are interesting??? 
|
|
| Author: | chrispitude [ Wed Dec 24, 2008 3:03 pm ] |
| Post subject: | |
Can someone explain why this is a problem if the transfer case is unlocked? I understand it'll bind itself into little bits in 4PT, and is not a good idea in 4FT, but how mechanically is the damage caused in 2WD or 4FT? - Chris |
|
| Author: | Diggerfreek [ Wed Dec 24, 2008 3:13 pm ] |
| Post subject: | |
It is a problem for the differentials. instead of the carrier rotating as if you are going straight, the spider gears will be turning all of the time like you are going around in circles. in turn, the diff will create more heat due to friction and will blow |
|
| Author: | tommudd [ Wed Dec 24, 2008 4:08 pm ] |
| Post subject: | |
Diggerfreek wrote: It is a problem for the differentials. instead of the carrier rotating as if you are going straight, the spider gears will be turning all of the time like you are going around in circles. in turn, the diff will create more heat due to friction and will blow
good simple explanation Digger, and exactly what happens, then if you have lockers
|
|
| Author: | sleeve84028 [ Wed Dec 24, 2008 4:10 pm ] |
| Post subject: | |
For a temporary solution (say less than 30 miles) a smaller tire would be OK for an open differential. Assuming: 1) The diff has been taken care of 2) The driver will keep speeds below 55MPH Remember those compact spares that almost all cars have these days? |
|
| Author: | chrispitude [ Wed Dec 24, 2008 4:38 pm ] |
| Post subject: | |
Diggerfreek wrote: It is a problem for the differentials. instead of the carrier rotating as if you are going straight, the spider gears will be turning all of the time like you are going around in circles. in turn, the diff will create more heat due to friction and will blow
Thanks Digger! This is what I expected (constant spider rotation) but I wasn't positive if they were designed to handle that through proper lubrication. You figure that with any small tire circumference difference (wear, pressure, idiotic mismatches) or city driving with lots of weaving and turns, the spider would be moving fairly constantly as well, although less in overall magnitude. - Chris |
|
| Author: | Diggerfreek [ Wed Dec 24, 2008 4:55 pm ] |
| Post subject: | |
I wouldn't even drive 10 miles. as for the cars that come with compact spares, it is stated that if the flat tire is on a power driven wheel, that the spare must be put on a no power driven wheel and that the good tire should be put in place of the flat one |
|
| Author: | Diggerfreek [ Wed Dec 24, 2008 4:58 pm ] |
| Post subject: | |
chrispitude wrote: Diggerfreek wrote: It is a problem for the differentials. instead of the carrier rotating as if you are going straight, the spider gears will be turning all of the time like you are going around in circles. in turn, the diff will create more heat due to friction and will blow Thanks Digger! This is what I expected (constant spider rotation) but I wasn't positive if they were designed to handle that through proper lubrication. You figure that with any small tire circumference difference (wear, pressure, idiotic mismatches) or city driving with lots of weaving and turns, the spider would be moving fairly constantly as well, although less in overall magnitude. - Chris like you said, they do move a little but with the rotation of the carrier, it is splash lubricating the spiders, but with the match ups listed above, things are going to blow up |
|
| Page 1 of 1 | All times are UTC - 5 hours [ DST ] |
| Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group http://www.phpbb.com/ |
|