disco_kevin30

I have a 1986 Panasonic DX-2000. I am building it to sell to a friend and I have run into a potential problem. The person I purchased it from had converted to 700c. I am switching it back to 27". I am going to assume the width of the modern front hub increasd the width at the drop outs, so when I put the current hub in there is a gap.

When I tighten down the quick release it pushes things together as normal and it all seems snug. However, i noticed the axle only extends halfway into the dropouts on both sides. So my question with regards to this is: is this safe? I apologize if this is a silly question but i dont want to kill anyone.

And then I have one other thing. I have noticed something while adjusting cup and cone hubs. I make my adjustments and go to tighten the locknut. I give them a good snug and then test it. Obviously my first attempt isnt always right; in regards to this question lets say there is too much play. So I undo the locknut and find that the axle is extremely tight. But it was never that tight to begin with. I have tightened the side i am not adjusting, first, and i am holding the cone while I tighten the locknut. I am assuming there is a risk of damaging the hub during this and i would really rather not. So I am not sure if this is normal or i am doing something wrong, but in the case of the latter i definitely want to get it right.

Anyway, i apologize for the long post. Any responses are appreciated. Thank you.

mrrabbit 

100mm from outside of one locknut to outside of the other.

Give or take a mm...

Need only 3-4mm of axle left over on each side.

Lock down the locknut and cone on one side.

Then, use other side to lockdown locknut and cone - several tries - such that when locked down, you have a teeny bit of end play. Just a teeny bit.

Clamping down the quick release eliminate the end play.

=8-)

disco_kevin30

Thank you for the response. I would like to clarify something though: the situation I am running into is, the axle goes from too loose after I tighten the locknut on the adjustable side to being crazy tight when i undo the locknut. The only thing that has changed is the locknut and the axle was never that tight to begin with. I am really sorry, i am not sure i am being very clear.

And i am only bringing it up because it seems really weird. Not sure if its a problem per se.

mrrabbit 

Normal...just guestimate a new starting position...lock again.

...until you get a result in which after the locknut is tightened...you have just a teeny bit of end play.

Then it's quick release time.

=8-)

disco_kevin30

Cool! Thanks again

andrewclaus

A good way to finely adjust cone bearings after correct assembly is to use two good cone wrenches (13 mm front, 15 mm rear) to loosen or two 17 mm open-end wrenches on the locknuts to tighten. Just a few degrees at a time. No need to repeatedly disassemble.

You can get real close the first time by tightening the second cone hand tight to the bearings, install the locknut, then tighten them together. That usually backs off the cone just the right amount.

_ForceD_

If you really think you need more axle into the dropout...you could obtain thinner spacers and/or lock nuts.

Dan

Bill Kapaun

How is that going to make the axle longer?
"Cinching" the fork blades together is going to put a bind on the cones, causing problems like the OP is describing.

dedhed

I believe he was referring to this statement of the OP's.

However, i noticed the axle only extends halfway into the dropouts on both sides. So my question with regards to this is: is this safe? I apologize if this is a silly question but i dont want to kill anyone.

fietsbob

Echoing 2nd post .. axle QR type protrudes, about 1/2 the width of the thickness of the dropout...

And .. remember the compression factor..

tightening the QR lever compresses the axle cones towards each other, and tightens the bearings adjustment

so factor that in..






...