Sign in to follow this  
Followers 0
rider-99

Broken Frame 2010 YZ450F

85 posts in this topic

Been a member for a while but didnt post anything until now. I purchased by 2010 YZ450F about 6 months ago from a racer. I checked everything out on the bike and it seemed great. He said he just upgrades bikes every year and this was his previous year bike. I have been trail riding and riding mx and supercross at a local track. It does have suspension work by Total Control Suspension for a 220# rider and I'm 190. Long story short, we were riding at the track yesterday for a few hours and when I parked to talk to a few buddies one of them noticed that the frame was cracked close to the steering head. After further investigating we found that it was craked on both top tubes that connect to the steering head about 3/4 of the way around. The tube that comes down from those tubes and connects to the down tube is broken completely off the down tube. The down tube is cracked about 1/2 the way around. So it seems that it would have only taked a few more landings before it completely broke the steering head off. ALL of these cracks started or are completely through the center of the welds. All of the cracks/breaks look clean inside, like a fresh break. Is this a common problem on these bikes? I called Yamaha hoping for some help but you all know what they said, its not a defect. Is there anyone else that I can contact? I talked to a yamaha customer specialist, but had hoped to talk to an engineer. I can include pics if anyone would like to see them.

Share this post


Link to post
Share on other sites

Pics please! Its definitely a poor weld job if it cracked along the welds they should be stronger than the material being welded if done right.

Share this post


Link to post
Share on other sites

This frame is totally different than the older models. Whats the process of posting a pic?

no shit sherlock, they still used to break on the downtube leading down from the steering stem

Share this post


Link to post
Share on other sites

sorry, didnt know your background. Still need help on posting pics.

I was a bit abrupt in my response too -- sorry. Yours is the first cracked late model frame i have heard of -- the older ones usually were on higher hour machines, but not always

most people post pics from a photobucket account (they're free -- photobucket.com) --- you post pics to photobucket, then copy and paste the pic's IMG code to your thread

Share this post


Link to post
Share on other sites

Ideally, you want a photobucket accout. You can upload the images to it and then use a link.

Cracked frames happen. You have a used bike and the warranty is long expired. Either find a very good welder who knows the correct method required to repair the frame, source a frame from a bike being parted or buy a new frame from a dealer.

Share this post


Link to post
Share on other sites

I was just comparing these welds to my 2013 YZ 450. They definitely look cleaner on the 2013.

I've heard of this happening on the 2010 and 2011 models (not yet on the 2012, may have not been enough time on them or maybe Yamaha fixed this). 220lbs is quite a bit if he was really harsh on the bike.

If I were you, I'd find your local dealer and have them press yamaha for a new frame. Your other option is to have it welded by a shop in town. If done right, they can make this stronger than it came. If I were in your shoes, I'd push your local dealer first, then try a welding shop (good one).

1 person likes this

Share this post


Link to post
Share on other sites

I'm glad you caught it before something really bad happened. I'm 215/220 Lbs, have been riding 450's for 7 years (MX) and haven't had anything like this happen on either my Yamaha 's or Honda 's. For all I knew, frame breaks were a thing of the past, gone with the steel frames.. Suzuki 's aside.

Share this post


Link to post
Share on other sites

I talked to my local dealer today and they are forewarding the pics of the breaks/cracks. They said that there wasnt any chance of yamaha offering any help on a 2 year old second owner bike. Who on here would trust a welded frame? Thought about adding gussets in the cracked/broken areas where fitment isnt so tight. The majority of my riding is outdoor mx.

Share this post


Link to post
Share on other sites

I've ridden with a welded frame many times, but steel - not AL. Suzukis were really bad --- had to break apart the factory welds and re-weld a few complete frames they were so bad (not me, i used a welder who is a race car fabricator ) -- also added additional gussets while it was blown apart

Thats a lot of breaks in yours -- i would scour ebay, etc. looking for another frame first, then if that turns up nothing, have it welded by someone who specializes in high performance equipment --- for instance , high speed drag cars and the like have to meet certain safety specifications to even go on the track at a sanctioned event. -- somebody who deals with 220 mph cars likely has the skills to trust for a bike

Share this post


Link to post
Share on other sites

Wow, just looked up a frame on the TT store for kicks, $2150??? Wow.

Share this post


Link to post
Share on other sites

Yah they aren't cheap! That's why I'm trying to help him find a way around this, without dropping mad money.

Share this post


Link to post
Share on other sites

I talked to my local dealer today and they are forewarding the pics of the breaks/cracks. They said that there wasnt any chance of yamaha offering any help on a 2 year old second owner bike. Who on here would trust a welded frame? Thought about adding gussets in the cracked/broken areas where fitment isnt so tight. The majority of my riding is outdoor mx.

As the previous poster eluded, find a high quality performance welding shop. Anyone that knows this aluminum will be able to make their welds stronger. You might have to look around, but I'm sure you can find someone. Ride it gently at first, then progressively push it. Keep an eye on the welds, etc. There is definitely an art to welding this type of material. Material, temp, speed, cool down, all contribute to strong welds. It looks to me like Yamaha didn't do very well with these frames in that year or 2011.

Share this post


Link to post
Share on other sites

My 2011 cracked in the same identical spot after 40 hours. I worked at the local Yamaha dealership at the time and immediately notified the Yamaha rep. He did some research and Yamaha said they have no heard of any others cracking like this. They were willing to help me out a little but not to the extent I wanted. I had it welded and it cracked again after 20 more hours. I've cracked 2 subframes and a swingarm on this bike also. Just not having any luck with this bike. I'd say find a new frame.

Share this post


Link to post
Share on other sites

I have broken two chain guides off the swingarms on two different bikes, a 2010 and 2012 YZ 450F. Neither was covered, unless it happened in the 30 day period after I bought my bike. The small ding on the chainguide came form the chain after the guide broke off. I ride MX, so I didn't hit a downed tree or go through a rock garden. My older bike is in the background with the repair already done to it,

2012-05-11_18-21-02_448.jpg

Edited by Greg Pennsiltucky Lykens

Share this post


Link to post
Share on other sites

I wouldn't worry too much over the matter, frankly. Cracked frames resulting from extreme use are common to virtually every brand, aluminum or steel. Nothing is completely indestructible, and, not to offend anyone, but there are some people who just have a kind of knack. It's inarguable that a very large majority of YZ's in service never suffer this.

Regarding the chain guide, I've never seen one just break off on its own like that (on any bike, much less a YZ) without being taken off by the failure of an improperly maintained or adjusted chain, or by striking a rock at speed. The dent on the leading edge of the guide shown does not look like it was caused by a chain, IMO.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0

  • Similar Content

    • By CallMeAnsel
      I have been given the opportunity to ride a new Yz450f on a daily basis. I will mostly ride on street but I will also ride on fields and other minor rough terrain, but not on mx tracks for now. I've rode a yz85 (2 stroke) and some four wheelers over about 5 years. I'm looking for tips on riding the 450 as it is a more powerful bike than I usually ride. Thanks for any tips you've got.
    • By KaToomTime
      Ok so we have a thread in Northwest that is for helmet cam vids, well lots of mine are shot with my mobile, so sort of rules that out, also we have Short Attention Span Theatre, but those are 45 seconds max. Here in the Pics and Vid section there is a thread on Technical Trails, but the Secret Training Ground has lots of technical bits, these climbs are semi-technical. The more we ride them, the easier they get. There are also lots of short, technical spots generally steep with roots but those are all short sections.  I will post up vids from the Secret Training Ground. If you have some Secret location vids, post em up, but it has to be a secret location. No telling where you're at.
      Backstory here... we keep making little climbs that are more difficult than the last one. First Hill, No Way, Rock Face, then OhEmEffGee, each time we're thinking man, not sure we'll get up it, then after wearing it down a bit we start to make it up on a regular basis. Cheers.
       
      Latest- hot off the press from the last 3-4 weeks. Rock Face Revisited bit is from last weekend. Super muddy slick (not as slick as wet clay though)...
      https://youtu.be/ZldYXmPAy9E
    • By DirtDestroyer
      I stripped the shift shaft on my 2001 yz125 2-stroke. I was wondering what parts I'd need to replace it, because when i look on rockymountain it showed the parts on everything that could be replaced. I was wondering if I could just buy the shift shaft assy, spacer, spring torsion, and oil seal. On the website that'd be 1,4,3,7. Here's where I'm seeing all this stuff https://www.rockymountainatvmc.com/oem-schematic/2. Thank you in advance for any replies.
    • By BMar
      Hey everyone!
       
      I went out to the desert last weekend and decided to record it. We rode mostly tight sand washes. Check it out!
       
      PS Turn up the resolution and  the cameras were faced too far down but I tried to make it work
       
       
    • By C-P
      Looking for the 2009-specific head pipe for 09 YZ250F.  Let me know what you have, thanks!