Quantcast
Jump to content

  • Do you own an ATV? Join our Forum!

    As a member, you can post in our forums, upload your photos and videos, use and contribute to our downloads, create your own member page, add your ATV events, and even start your own ATV club to host your own club forum and gallery.  Registration is fast and you can even login with social network accounts to sync your profiles and content.

Recommended Posts

My son started racing MX this year in the youth class on a Raptor 125cc. He is already in need of a bigger bike. I would like to build a hybrid 250 for my sons next step in ATV racing. I was looking at installing a yz250f motor in a yzf450. Has anyone done this? if so how did you solve the starting problem. It looks like the kick starter will hit the plastic Nerf bar. Are there any recommendations or alternatives I should consider?

Share this post


Link to post
Share on other sites


Anything can be done with a little basic fab work.  May want to look into what they did in the golden era of hybrids when they stuffed the 426/450 motors in the 250r and 400ex chassis.  This was in the early 2000's pre yfz and trx 450 days.

Fenders typically got cut to clear the kicker, sometimes an extension would be made to push it out, or a smaller kicker from another motor would be used.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Similar Topics

    • By ATVNetwork
      Three Palms Action Sports Park in Conroe Texas would host the first doubleheader in the 2020 ATV Motocross National Championship (ATVMX) Series, an AMA National Championship, on September 19 and 20.
      View the full article
    • By Brent Wright
      What was the last year of these quads?
    • By Brent Wright
      What's a good size to start a 10 year old on?
    • By Venom
      Hi, All

      I started this project a while ago.. I have decided to make one thread I can continuously update..

      So , here we go. I got this Raptor 80 in really bad condition.. Rear end frozen, Engine toast, tires dry rotted, tons of rust..etc.. They admitted they beat on it very hard.

      Since they do not make these with a drive shaft anymore I decided to restore it from top to bottom..

      These are photos of when I got it home.

      Next up, the tear down..



      First, I needed to tear it down and determine if the rear end was still good... As we all know... That is where it would be cost prohibitive to restore if it is trashed..

      Got it completely stripped down and I lucked out... The rear Drum brake was caked solid inside with dried mud. That was causing the rear end to lock up. Took off the rear brakes and the rear end spun perfectly smooth.

      Once I got it all stripped apart I needed to take the finish off all the parts. I am going to be powder coating the frame and many parts.. Once the finish is off each part it will need to be sandblasted to white metal .. The guy I use for powder coating gives me a hefty discount if I bring the parts to him ready to go.

      You could just sand blast, but that would take a long time to get the finish off. First I used Aircraft Paint Remover.. That stuff is pretty toxic Goggles and Resperator are required. That quickly gets you down to the metal... Then you can sand blast to white metal pretty quickly...


      I had another thread I had started about a problem with the tear down... It has some great info .... here is the link... It is about removing the frame bushings. ....
       
      https://www.quadcrazy.com/atvforum/topic/14209-raptor-80-frame-bushings/?tab=comments#comment-104702
  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...