Bent my new Renthals!

10 replies to this topic
  • CaveCreekThumper

Posted 28 September 2003 - 10:48 AM

#1


To keep from wadding up my stock cheapo bars, I pu on new Renthals before I even rode my new WR 250. This morning, I dropped it once gong 0 mph (stalled climbing a hill), and the new bars are bent. They're bent about 1/4 to 1/2 inch.

Is this a freak thing, or should I expect to replace Renthals after every fall? Should I try and bend them back?

How much stronger are Pro Tapers?

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  • yz_racer

Posted 28 September 2003 - 12:03 PM

#2

Tapers are awsome hands down. I've air mailed my bike countless times and they are still good as new :D.

:)

  • MX600

Posted 28 September 2003 - 01:59 PM

#3

It all depends on how the bike lands. I wouldn't recommend straightening them because it puts them in a weakened state. But if you do straighten them, get a 3" diameter pipe about 3' long and that'll give you enough leverage to get them about right.

My opinion is the Renthal 7/8" bars are a waste of money. Get the Fatbars. Not only do the cost less, they are stronger. Sure, you do have to pay extra for oversized clamps, but it's a better investment than buying 2 sets of 7/8" bars.

  • skip #7

Posted 28 September 2003 - 02:23 PM

#4

I broke a set of renthal twin walls a while back , true to their word they sent me a new set free of charge, I guess since mere mortals aren't supposed to break them.

  • teamgreen

Posted 28 September 2003 - 03:05 PM

#5

Pro-Tapers and bark-busters. Bullet-proof! :D :)

Manny :D

  • cowboyona426

Posted 29 September 2003 - 12:31 AM

#6

Quote

My opinion is the Renthal 7/8" bars are a waste of money.

Mine too. I but Jeremy McGrath edition Renthal 7/8" bars on my YZ not too long after I bought it, and they bent on the first real crash. Junk IMO. Their sprockets are the same- they don't last for crap.

Quote

Pro-Tapers and bark-busters. Bullet-proof! :) :D

Manny :D


Almost! :D I just installed universal adapters/Pro Tapers/Acerbis Rally Pro's on my 426, and bent the throttle side hanguard on the first ride :D But this was no stall going up a hill let me tell you- I did a high speed soil sample coming off a jump on a motocross track :D Maybe I should just stick to trails :D
If it were me, I'd get the Pro Tapers and universal adapters. If you go this route, PM me and I have a brand new FLY Racing bar pad I'll make you a deal on :D

  • oldbones

Posted 29 September 2003 - 08:16 AM

#7

He said "Bark Busters", not "Acerbis anythings"... I have seen way too many bent Acerbis handquards, and they all move around. Try the Tusk, Bark Buster, or the Whackers. Way tougher.

Just my .02.

  • cowboyona426

Posted 29 September 2003 - 08:47 AM

#8

Maybe I'll give those a shot next time oldbones. I really like the looks of the Rally Pros though, too bad :D My first set took a beating and held up fairly well, but they were too tweaked to fit my new Pro Tapers, so I ordered new ones and tweaked them on the first ride like an idiot! :) Live and learn I guess :D

  • RMXC51

Posted 02 October 2003 - 08:45 PM

#9

Not only do 7/8 Renthals, bend, they also tend to shear off at the bar mount, leaving a jagged hunk of metal flailing around your leg. Oversize bars are WAAAAAAAAAAY stronger.

  • MX600

Posted 03 October 2003 - 06:27 AM

#10

Quote

they also tend to shear off at the bar mount, leaving a jagged hunk of metal flailing around your leg.



Yup, I've seen this happen way too many times to feel safe with the Renthals 7/8" bars.

Typical oversized bars can still do that, but it's less likely. The Twinwalls are specifically designed not to do that. Since the outer wall is what comes into contact with the clamping area it will be the wall to develop cracks and other defects. The inner wall provides the strength but is shielded from that sort of thing, so they're virtually unbreakable at the clamping surface (which is the point of highest stress concentration).

Most bar manufacturers recommend that you change your bars after a bad crash, just like helmets. If the bar flexes too much, it may eventually fatigue and break. Aluminum bars are most specifically affected by this since aluminum is prone to fatigue failure. Also, if you flex a bar and develop a crack (no matter how small), you've put a defect into it that'll continue to grow even if you don't crash. Renthal now shot peens the surface of the 7/8' bars (and Fatbars) so that helps with stopping defects from propogating. But its still possible to snap them in the right situation.

  • DRZ400Vet

Posted 04 October 2003 - 11:15 AM

#11

Buy Pro Tapers, last bar you will ever need.



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