Jump to content

Rod Kit Install Difficult?


mcman56
 Share

Recommended Posts

Are rod kits difficult to install on modern 2 strokes (Beta 125)?   The only one I have installed was on a BSA C15.  It was very old and rusty.  My cheap 30 ton press groaned pushing it apart but got the job done.  Any recommendations?       

Link to comment
Share on other sites

 

 
 
 

Well if you are looking at it, you should be able to tell if you are tooled up enough to do it. The last time I looked at one I passed as I did not want to screw with someone elses crank. If it was mine, I might of tried. I have done a few dozen over the years, but all solid cranks.

Link to comment
Share on other sites

 

Your bike (and all modern Beta 2-strokes) with the plastic inserts have full circle crankshaft flywheels.

The plastic bits on each crank flywheel are there to increase the crankcase compression ratio.

Be very careful with them, as they are not available separately and if you damage one you will have to buy a new crankshaft.

That said, there is nothing different in the procedure for rebuilding your crankshaft than any other 2-stroke crankshaft around today.

  • Like 1
Link to comment
Share on other sites

 

I see what you mean.  Do you know what the proper tooling looks like?   I have seen pictures of 1/4" angled steel to go through the center as a base for pressing.  With that, it looks like I could make a split ring/ spacer to sit on the flat area around the rod.  This spacer could support from angle to crank wheel.  1/4" does not sound like much but there is only about 9 mm between the wheels. 

125_crank.JPG

Link to comment
Share on other sites

 
 
 

Someone suggested I could use a chop saw to cut the big end pin to get it apart.  Once the rod is off, it should not be difficult to support and press out what is left of the pin.  Looking ahead, what happens if I press the crank too tightly together.  Is there a way to correct or would I be back to the same problem but now have a big paperweight?  It is for a friends bike and I'm not finding a local shop that does these.

Link to comment
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.

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.

Loading...
 Share

×
  • Create New...