Chain knocked a hole in my case

I posted this over in the yz forum...but then I figured Id get more hits here:

I was riding yesterday (with beezer, docstrangelove, drtbkr188, fireftr) and my master link let go. The chain smashed the threaded part of the case where bolt #9 goes (very bottomright of drawing) and cut a lot of metal out of the rounded area where the clutch actuator arm goes down into the case....it didnt go thru to the clutch actuator arm, but the hole for #9 seems to be leaking oil...I say seems because I didnt get a chance to really inspect it. I got home after dark and the bike was covered in mud. Im going to clean it up tonight and find out exactly where the oil is leaking from. Has anybody here ever used epoxy to fix something like this? Its going to get cold here in about 2 months, so I'd be willing to do a temporary fix...and then either get it welded or get a new case. Any ideas?

Thanks,

Mike

site1034.gif

JB Weld works great. I would reccomend that you try that first and if that doesn't fix it you will probably need a new case.

Yea...i'll snap one when I get home. The chain let go right after the big turn (the one that directly across from the fence...where the first bunny hop jump takes you out of the pit). I came flying off that downhill...and when I landed it just popped....I thought I trashed the transmission.....2 rides on that chain!...one of the o rings is missing so its shot. I think I'll try to jb weld or use marine tech epoxy and see if it holds....I have to ride soon! If it works, lets get together next week and kill that track!

JB Weld works great. I would reccomend that you try that first and if that doesn't fix it you will probably need a new case.

Ditto the JB Weld. Used it years ago to fix the same problem on my YZ125. Though it was going to be a temporary solution but it ended up holding throughout the life of the bike.

check out this web site for fixing your cases

www.alumaloy.com i have never used it but a friend of mine at the track has used it and said it works great. suppose to work on both alum & pot metal. I believe their website has a video that shows how it work along with all the specs.

JB Weld works great. I would reccomend that you try that first and if that doesn't fix it you will probably need a new case.

Ditto the JB Weld. Used it years ago to fix the same problem on my YZ125. Though it was going to be a temporary solution but it ended up holding throughout the life of the bike.

please please be right!...if that works i'll be set!

Thanks doc...if the jb weld doesnt work I might ask you to talk to your uncle.

Im worried about any big cast pieces that may have ended up inside the case. Then again Im getting ahead of myself...i have to clean it up and see exactly where the damage is....the bike has about 25 lbs of mud on it right now. I'll post a pic tonight

Yeah as long as it`s not a big hole and just a crack in the case JBweld or some other type of metal filler is what i would go for,arraldite perhaps,but i would try a bonding agent first,just make sure you clean it up real good and if you can try and rough up the case surface as the filler will take better to it,maybe try and clean it with brake cleaner or similar to try and remove any oil in the crack and help the filler take!,welding cast alloys can be a real pain depending on the quality of the casting(but not impossable!)so try the JBweld or similar first,thats normaly a good fix,good luck with that case! :cry:

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

  • Similar Content

    • By Bryan Bosch

      Rockstar Energy Husqvarna Factory Racing Star battles Through All-New Format Hell’s Gate to Finish Second
      February 11, 2018 – (Motor Sports Newswire) – Rockstar Energy Husqvarna Factory Racing’s Graham Jarvis has earned a strong second place at the 2018 Hell’s Gate extreme enduro. With an all-new format for this year, concluding in a 20-minute sprint race, the event posed a fresh challenge for the five-time winner.
      For the first time ever, the event kicked off with a Prologue race on the Friday night. Designed to set the starting order for Saturday’s race, the Prologue was an endurocross style event held close to the hosting Il Ciocco Hotel. Although it provided a great spectacle for the fans, the race results were eventually scrapped due to issues with the course.
      Saturday’s heat race went well for Jarvis. An expert at managing his pace, the Brit did exactly what he had to do over the five-laps, finishing fourth aboard his Husqvarna FE 250 in the cold conditions of the Tuscan hills. The position gave him a good start for the night race, which saw riders set off at 3.30pm for a tough three-hour multi-lap event.
      At the conclusion of the night race, the top-10 riders were given a 15-minute break before contesting the new 20-minute endurocross in the arena area of the venue. In freezing conditions, the riders fought bar-to-bar in front of the record-crowd of spectators to decide the overall winner. With the final results calculated on the sum of the previous legs, Jarvis was announced as runner-up, just a few minutes behind eventual winner Mario Roman.
      Graham Jarvis: “I really enjoyed the racing today, I always do here at Hell’s Gate. It’s been a tough couple of days and I’m still getting used to riding the 4-stroke, but the bike has been absolutely faultless over the entire weekend. It has been pretty close between the top-four all day and it’s all come down to the final 20-minute race off. It would have been nice to take my sixth win at the event, but I’m happy with second.”
      Results – Hells Gate 2018
      1. Mario Roman (Sherco) 3:06:03
      2. Graham Jarvis (Husqvarna) 3:08:57
      3. Travis Teasdale (Beta) 3:12:45
      4. Diego Nicoletti (Husqvarna) 3:32:14
      5. Sonny Goggia (KTM) 3:39:26
      6. Michele Bosi (Beta) 3:46:15
       
      Husqvarna Motorcycles North America, Inc.
      Husqvarna has continued to expand its professional race team to compete in AMA Supercross, AMA Pro Motocross, AMA National Enduro, GNCC, AMA EnduroCross, and AMA National Hare & Hound championships. Husqvarna team riders are competing aboard Husqvarna FC 450, FC 350, FC 250, FE 350, TC 250 and TE 300 models.
      Rockstar Energy Drink
      Rockstar Energy Drink is designed for those who lead active lifestyles – from Athletes to Rockstars. Available in over 20 flavors at convenience and grocery outlets in over 30 countries, Rockstar supports the Rockstar lifestyle across the globe through Action Sports, Motor Sports, and Live Music. For more information visit: www.RockstarEnergy.com
      Source: Husqvarna Motorcycles GmbH

    • By deanmellor
      My top end went on m 98 cr 125, the needle bearing clip came out and broke apart and shrapnel got everywhere and blew it up. I cleaned out the top end and washed out the crank with the bike upside down. the bike starts up great and seems to run fine but im getting a weird di-di-di-di-di-di-di noise coming from the motor. i tried adjust the power valve and tightening everything but the noise is still there. Here is a link to a video where you can hear the sound. It gets louder as rpm's get higher and at really low rpm barely idling it goes away. I am pretty new to bikes and 2 strokes so any help would be appreciated.
      https://youtu.be/msfU8WCXg8E
    • By RidingWithStyle
      In need of Cycra Handguards (probends) for my bike. Need 1 1/8 clamp size for renthal twinwalls. Message me if you have any for sale at a good price! 
    • By Baja Designs
      Hello CRF450R Owners,
      Bailey here with Baja Designs.  We recognize ThumperTalk as one of the go-to sources for information on the CRF450R and we receive emails daily regarding the best inexpensive light setup or purchasing the B1K setup ran by Ox Motorsports.  We would like this thread to be a General Discussion area for members and guests to discuss Dual Sport Kits (DSK), Lights, and Lighting Acessories based upon stock and modified charging systems.  Please Post up if you have any questions or comments CRF450R related! 
      www.bajadesigns.com

    • By Chumbag
      I want to get a cheaper used FMF exhaust for my bike. The one on eBay I was looking at had some dents in it. Do dents in the muffler have a big impact on the performance? Also the pipe looks to be turned the wrong way does that rotate? I don't want to buy this if the pipe will not rotate because I think it looks like its turned the wrong way and wouldn't fit.