Re: Fabrication question
- From: "Snag" <snagone@xxxxxxxxxxxxx>
- Date: Sat, 31 Mar 2007 11:50:02 -0500
Tud wrote:
A round of drinks for those workers of metal out there, something I'm
definately not. But hell, why should that stop me. My first project
is going to be what most would likely consider extremely easy. I'm
going to pull the back seat off the bike and I want to install a rack
in order to mount an auxiliary gas tank and I've got some pretty
basic design questions.
I figure I'll pick up some 1/2" steel tubing (ok, I actually have a 3'
piece, although I can't recall why) and bend this into a shape to
mount at two points on the side of fender, basically in the same spot
that the hand holds mount onto. You can see from this picture that
they're a bit offset.
http://tinyurl.com/msmer
http://tinyurl.com/27aml6
So, I would make two bars very similar to the handholds but that
wouldn't bend out like they do. Next I'd weld two bars going across
from side to side. The whole thing would angle towards the back of
the bike, so that the platform of the rack would be parrallel to the
ground but would be more towards the rear of the bike. I would also
have a couple bars that go down from one of the cross members to
attach at the same point as the top mounting point for the tale
light, or would this be overkill? The only reason I'm think of the
additional mounting point at the tail light is because the weight
would be further back on the rack than where the mounting points are.
If 1/2" steel tube is sturdy enough to support a lot of offset weight
then I likely won't bother.
So, I've got a 1/2" steel tube and I want to bend it, am I ok
applying some heat with one end in a vise and just bending it, or is
the tube likely to kink? Should I be using tube or solid 1/2" steel
stock? If I stick with the tube, how are the ends flattened in order
to make mounting points? I assume with the solid stock I'd need to
weld a plate to it, but can you heat up and hammer one end of the
tube flat and drill the hole in the flat part to create a mounting
point? I've seen it a bunch, just not sure if it's as simple as a
hammer or if they run it through some sort of machine/press. Any
thoughts on which I hope are fairly basic questions?
Two wide , upside-down , flat bottom u's , tied together with two crossbars
.. And a support going down to the license bracket . The tube wil probably
flatten and kink unless you support it . Use a piece of 1/2" stock with one
corner rounded to the radius you want , sandwiched between two stouter
pieces that overhang about a half inch . Clamp a straight side , bend it
around the corner . You might make the template radius more than a 90 degree
bend , since you will have at least one bend that is ... You might not need
heat .
Have you considered mounting the front end inboard of the shock ? Make
your bends a lot simpler , but you would need to space the bottom out the
same amount . I would use a piece of flat stock welded to the ends of the
tube instead of flattening them . How much weight are you putting on it ?
--
Snag aka OSG #1
'90 Ultra , "??"
BS132 SENS NEWT
none to one to reply
.
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