Recent Topics
Amazon Packaging
by SubLGT - 12/05/19 02:21 PM
Does a dealer send your paperwork to the
by WhyMe - 12/05/19 02:04 PM
Cheapest option for insurance?
by cwilliamsws6 - 12/05/19 01:31 PM
Volvo T6 (SI6) oil
by posaune - 12/05/19 12:59 PM
Strange VRLA AGM battery issue
by pschnahc - 12/05/19 12:20 PM
Slight whining on power pump.
by Umit - 12/05/19 12:15 PM
Mobil 1 video
by njohnson - 12/05/19 12:06 PM
F150 Syn 3 map updates, finally!
by wallyuwl - 12/05/19 11:49 AM
Visom and GTL Question
by Doublehaul - 12/05/19 10:42 AM
SuperTech 5-30 HM Full Synthetic 5qt. $14.37
by mbz321 - 12/05/19 10:09 AM
Mechanics and come backs
by motor_oil_madman - 12/05/19 08:33 AM
Camping World Labor Rate
by Redright9 - 12/05/19 08:09 AM
Best Batt Maintainer
by Smoky14 - 12/05/19 07:30 AM
MOPAR OEM floor mats
by OVERKILL - 12/05/19 07:22 AM
Pressing Index Finger on Forehead
by Gebo - 12/05/19 06:39 AM
Drove a 6spd manual yesterday...don't miss it
by wemay - 12/05/19 06:20 AM
Newest Members
Ronparise, DrPcFix, benny88, Blazs, UnderDawgAl
70041 Registered Users
Who's Online Now
104 registered members (AC1DD, 14Accent, 4WD, alchargo, Aero540T, 6 invisible), 2,646 guests, and 39 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics298,328
Posts5,133,095
Members70,041
Most Online3,589
Nov 2nd, 2019
Donate to BITOG
Print Thread
Hop To
Interesting Youtube video regarding bent wheels and yes, bent tires and an oven #5267471 11/14/19 06:59 PM
Joined: Mar 2013
Posts: 6,130
S
skyactiv Online Content OP
OP Online Content
S
Joined: Mar 2013
Posts: 6,130
Skip to 1:05 if you want.



Wife: 15' Audi A4 quattro 6 speed manual
Sold: 13' VW GTI 3 door 6 speed manual
Me: 18' Elantra Sport 6 speed manual


Re: Interesting Youtube video regarding bent wheels and yes, bent tires and an oven [Re: skyactiv] #5267581 11/14/19 08:50 PM
Joined: Jun 2002
Posts: 13,400
K
Kestas Offline
Global Moderator
Offline
Global Moderator
K
Joined: Jun 2002
Posts: 13,400
The video talks about how bouncing strapped new tires on the ground will damage the beads. I find that hard to believe. I can't believe tires are that sensitive and not resilient enough to withstand what I would consider normal handling.

Also, this video doesn't show how to repair a bent aluminum wheel as much as it underscores the importance of balance and runout.

Re: Interesting Youtube video regarding bent wheels and yes, bent tires and an oven [Re: skyactiv] #5267718 11/15/19 12:28 AM
Joined: Aug 2017
Posts: 959
D
Dave9 Offline
Offline
D
Joined: Aug 2017
Posts: 959
^ That and it was stretching truth that if the rim were perfectly true that they couldn't balance it. They just don't want the ever escalating amount of labor it would take to get it closer and closer to 0 runout.

Re: Interesting Youtube video regarding bent wheels and yes, bent tires and an oven [Re: Kestas] #5267845 11/15/19 07:46 AM
Joined: Feb 2003
Posts: 3,663
C
CapriRacer Offline
Offline
C
Joined: Feb 2003
Posts: 3,663
Originally Posted by Kestas
The video talks about how bouncing strapped new tires on the ground will damage the beads. I find that hard to believe. I can't believe tires are that sensitive and not resilient enough to withstand what I would consider normal handling.

Also, this video doesn't show how to repair a bent aluminum wheel as much as it underscores the importance of balance and runout.


X2.

There were a lot of wives tales about tires told in this video. I can tell you that as a tire manufacturer, the company I worked for treated tires a lot worse than the guy was explaining - and we have the data to back up that the damage is minimal.

But he actually had a point about leaving a low spot in the rim so the tire's high spot can be matched up with it. That effectively cancels the 2.

Ya' see, it's actually the 1st harmonic of run out that is the important value - the 1st harmonic being the best fit of a sine wave to the runout curve, The 1st harmonic is a calculated value that requires a computer to calculate and is typically lower than peak-to-peak value and is only sort of matched to the highest and lowest run out values. But it isn't critical to get the position exactly right - which why most people think in terms of the high and low spot.

Why the 1st harmonic? Because vehicle suspensions act like spring-mass-damper systems and have a resonant frequency in the 50 mph to 70 mph range. Outside that range, the shock absorber partially dampens out the vibration, but within the range, the vibration is only out of phase with the input.

Yes, there is more to this than just the 1st harmonic, but the 2nd and higher harmonics are generally smaller in value and the suspension resonates at different frequencies that are harder for humans to pick up.

There's a long story about the time the company made a square(ish) tires where the 4th harmonic was the largest of the values and caused a rhythmic vibration that phased in and out at about 40 mph in an E-350 cargo van that set off the large side panels in the body of the van. The noise would drive you out of the van, it was so annoying.


CapriRacer

Visit my web site: www.BarrysTireTech.com
Re: Interesting Youtube video regarding bent wheels and yes, bent tires and an oven [Re: skyactiv] #5267960 11/15/19 09:27 AM
Joined: Oct 2012
Posts: 2,541
M
michaelluscher Offline
Offline
M
Joined: Oct 2012
Posts: 2,541
I took my Camry rims to this shop for straightening and powder coating

Wasn't cheap, but a first class job

Owner Mario was a stand up guy


2006 Toyota Camry SE V6

131k
Previous Thread
Index
Next Thread

BOB IS THE OIL GUY® Powered by UBB.threads™