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PostPosted: Mon Aug 26, 2013 1:22 pm 
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Joined: Mon Aug 26, 2013 12:48 pm
Posts: 5
hi people,new to this old cycle stuff but luvin it:need teck help just put a new wheels in my sun gt racer, (oldsize drop outs)fitted og cassete to new wheel, spread reer drop outs to fit wheel,but derailler will not move fully up,no more movement,can i space the cassete out? or reduce the small spacer between cone and lock nut? have adjusted h&l screws no joy,any help be great tar..


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PostPosted: Mon Aug 26, 2013 1:28 pm 
Old School Grand Master
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Joined: Fri Oct 14, 2011 8:41 pm
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Location: Cumbria
Welcome

Travel for the rear mech likely only for a 5-6 speed freewheel and not for a much wider modern cassette / freehub.

Any pics?


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PostPosted: Mon Aug 26, 2013 3:30 pm 
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Joined: Mon Aug 26, 2013 12:48 pm
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Thank you for the quick reply! Attached some photos, any suggestions would be great. Tar!


Attachments:
IMAG0309_a.jpg
IMAG0309_a.jpg [ 439.62 KiB | Viewed 306 times ]
File comment: It won't travel any further up.
IMAG0310P_a.jpg
IMAG0310P_a.jpg [ 300.34 KiB | Viewed 306 times ]
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PostPosted: Mon Aug 26, 2013 3:55 pm 
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glynno wrote:
...have adjusted h&l screws no joy,any help be great tar..



Is the cable adjusted enough to pull the derailleur far enough?


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PostPosted: Mon Aug 26, 2013 4:12 pm 
rBoTM Winner
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Location: California
The problem is that massive spacer on the right side of your rear hub axel. The freewheel would normally be about a centimeter or less from the right drop, yours appears to be well over 2cm out. What is the rear spacing on this frame?


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PostPosted: Mon Aug 26, 2013 5:23 pm 
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Joined: Mon Aug 26, 2013 12:48 pm
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cable is adjusted fully,derailleur is on its stops(even filled a bit off) for max movement.Dropout measures 124mm,new wheel hub lock nut to lock nut 135mm..It measures 18mm from small sproket edge, to edge of locknut where it hits dropout.was thinking of reducing spacer bush,as i want to keep it as og as poss the bike is in vgood condition all is as it was in 1978 (cool) any help much appreciated tar


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PostPosted: Mon Aug 26, 2013 5:45 pm 
Road Moderator
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What lewisfoto said. If your dropouts measure 124mm then respace the wheel down so that it is pretty much the same. Generally the smallest sprockets is just millimeters away from the drop out, I could park my front wheel in that space there!


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PostPosted: Mon Aug 26, 2013 6:17 pm 
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Joined: Mon Aug 26, 2013 12:48 pm
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your spot on,learning stuff all the time,sometimes you just dont see the wood for the trees or( wheels) ok tar pretty much what i thought,if i get spacer reduced on sprocket side will the wheel be off centre?


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PostPosted: Mon Aug 26, 2013 6:19 pm 
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We're here to help :)

Yes it could well be, Ideally you'll remove 5mm from either side but it does look as though there is a lot to be removed from just the drive side....


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PostPosted: Mon Aug 26, 2013 8:06 pm 
Old School Grand Master
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Location: Cumbria
Problem will be if you remove spacers then the axle will be too long...........the axle will stick outside the dropouts and the QR wont work properly.

Is there a name on the new hub you have?

Shaun


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