View Single Post
Old 09-06-23, 12:22 PM
Join Date: Aug 2021
Location: Putney, London UK
Posts: 769

Bikes: 1982 Holdsworth Avanti (531), 1961 Holdsworth Cyclone

Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 260 Post(s)
Liked 596 Times in 307 Posts
I've been playing with the RD - Cyclone II GT.
Initially it had trouble going into top gear (13T) on the New Winner Ultra 6 13-15-17-19-21-28.
But the huge upside is my spacing calculations were spot on - no chain rubbing anywhere

So I adjusted the hanger using the "spare wheel" method:
That worked a treat, then I slackened the B screw to give more chain round the sprocket.
Now it works fine on the workshop floor.

Backup plan is to try the Cyclone from my Avanti which handles 7 or 8 gears just fine.
May still have to do that to check if the new RD is bent in some manner.

Small issue is the L screw on a Cyclone only really works for 6-8 gears (ie 126mm OLD), the screw is M4 fine with 10mm of thread.
Luckily I have a junk SunTour Skitter which has M4 fine screws with 14.4mm of thread.

Last edited by Aardwolf; 09-06-23 at 03:55 PM.
Aardwolf is online now  
Likes For Aardwolf: