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fitting up chainstays

Now that we’ve got some slotted chainstays, I’m fitting them up in the jig with the dropouts in place to make sure everything fits nice and snug.

SNV81547

Since the stays are at an angle to the centerline of the frame, they come away from the dropouts at an angle. Normally you can achieve this by either bending the dropout tab so it points in or slot the stay at an angle.

On this frame, you probably can’t tell but I’ve actually done a bit of both. I wouldn’t have been happy slotting the stays at such a big angle and there’s not a very big tab on the Paragon dropout to be able to bend it much. so I’ve done a little of each.

You can see the tab is bigger than the diameter of the tube, so it sticks up a bit above the tube. Some people leave it like that or maybe file it to a nice arrowhead/point. I think on this frame I’ll shape it down so the curve of the dropout blends into the stay. I think I might also scallop the end of the stay on this one.

SNV81537

Currently playing in iTunes: Hornets! Hornets! by The Hold Steady

posted by steven - January 30th, 2009

Johnny T

Johnny T

From back in the day when it was ok to use the term ‘roost’ without being ironic.

Currently playing in iTunes: Louie Louie by Motörhead

posted by steven - January 30th, 2009

slotting chainstays

chainstay slotting

Sometimes I slot my stays by hand and sometimes I use the lathe. I’ve got a pretty good setup for the lathe that’s quick and repeatable so I do more that way although doing them by hand (hacksaw and file) isn’t much slower.

chainstay slotting

I find a get a more accurate cut on the lathe and since I don’t change the settings between stays, it’s easier to get a nice matching pair.

chainstay slotting

Currently playing in iTunes: Idaho by Bodeans

posted by steven - January 27th, 2009

sunday workshop pic

seattube/toptube braze

Seattube/toptube cluster. This is immediately after brazing and still has a load of flux residue on it. The flux is applied before brazing as a paste and hardens to a crusty crystalised coating during the brazing process. I use water soluble flux so a couple of hours of soaking in the dunk tank and it washes clean off.

Once it’s finished the soak, we do a little filing and sanding to create a nice smooth even fillet. This is a pretty good braze so it’ll need hardly any finishing.

Currently playing in iTunes: The Beach Is Free by Billy Bragg

posted by steven - January 25th, 2009

‘Disk touring’ dropouts

One of the problems with running disk brakes is that it’s really difficult to get a neat solution to installing a rear rack. If the mounts are positioned in the right place, they almost always place the rack in a position to foul the caliper. There are a few solutions to this and probably the nicest is to use one of the Old Man Mountain racks.

Alternatively, you can sometimes move the rack mounts so they miss the caliper but this usually puts the rack (or pannier) a bit too far forward (and high) risking the riders heels clipping panniers.

Another solution to this is to move the disk mount instead of the rack mount. I can now offer this solution using these nice dropouts that put the disk mount between the seat and chainstays. Another neat feature is that these drops have replaceable hangers. This means you can ditch the hanger if you’re running singlespeed or replace the hanger if it gets busted.

And of course these dropouts come with eyelets for guards as well as rack.

Currently playing in iTunes: Ain’t That Enough by Teenage Fanclub

posted by steven - January 25th, 2009

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