Jump to content

Just how much stronger is a 520 chain over a 428?


turbofurball
 Share

Recommended Posts

 

A 520 is about 25 % stronger than a 428 but comparing the tensile strengths of the chain is not that useful. You can look up minimum tensile strengths in engineering tables but this would not tell you everything. All decent chain is stronger than the minimum but some are much stronger and more hardwearing than others. All other things being equal a 428 chain will wear slightly faster than a 520 because there are more links to wear in a given length. A 428 chain is smoother running and lighter. A 428 chain will stand over 2 tonne which is far more than a TY 175 will put on it. Best thing you can do for a trials chain is an oiler dripping bio degradable gear oil onto it and spay it with WD 40 or similar after washing the bike.

  • Like 1
  • Thanks 1
Link to comment
Share on other sites

 
 
 

 You can buy high strength 428 racing chain that probably exceeds the strength of low grade 520. Look up manufacturers specs online.

 And TY mono forks are an ENORMOUS improvement over TY175 forks.

Edited by motovita
Link to comment
Share on other sites

 
 
4 hours ago, turbofurball said:

I'll take your word for it over the forks, I have Magials progressive springs in mine and TBH now I've got the oil right I can't tell the difference between them and the forks on my ST2.5, so I don't feel the need to upgrade :D

I run a 428 chain on my TY250 twinshock with no problems - it is how it came out of the factory. Mick Andrews was very frank with Yamaha about the TY range,got his own way over most of the design. Looking at how little needs doing to a TY compared to other brands of the time I think he and Yamaha did a very good job. There was a time a while back when it was popular to fit mono forks onto the twinshock TY's, then most went back to the originals as they felt the leading axle of the mono ones spoilt the steering. The progressive springs are the way to go as you already have.

Edited by jon v8
  • Like 2
Link to comment
Share on other sites

 
23 hours ago, turbofurball said:

I'll take your word for it over the forks, I have Magials progressive springs in mine and TBH now I've got the oil right I can't tell the difference between them and the forks on my ST2.5, so I don't feel the need to upgrade :D

 As long as they work for you that's all that matters. Personally I'm not a fan of putting non period correct parts on vintage bikes so i wouldn't do it either.

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...