Posted by Jujitsu Lizard on April 15, 2009, 9:43 am
I've had bad luck jacking my motorcycle. It can be done, but it requires a
hockey puck and other shims because the frame is at different heights on the
left and right. I was thinking about welding a fixture that fits into my
ATV jack using the holes that are in the jack already.
Once the motorcycle is up, stability is an issue. It doesn't take a lot to
knock a bike off a stand when it is shimmed with hockey pucks.
If I weld together a solution, it will trap the frame in a way where
stability is not an issue.
Photos are here.
http://blog.dtashley.com/?py8
Does anyone know of such a product existing already?
Thanks,
The Lizard
Posted by Mark Olson on April 15, 2009, 10:09 am
Jujitsu Lizard wrote:
> I've had bad luck jacking my motorcycle. It can be done, but it
> requires a hockey puck and other shims because the frame is at different
> heights on the left and right. I was thinking about welding a fixture
> that fits into my ATV jack using the holes that are in the jack already.
That's exactly what I did for my SV650S. Get an angle grinder, a drill,
some flat steel stock, and start measuring, cutting, and trial fitting.
When you get all the pieces the correct size, take it to a welder and
have him weld it up. It worked like a charm. The fixture bolted into
the holes on the jack, and there was a cross-bolt that went through the
two uprights on the fixture and through a matching drilled boss on the
bottom of the engine. In the rear were two saddles that supported the
frame where the swingarm pivot was.
Posted by Jujitsu Lizard on April 15, 2009, 10:27 am
> Jujitsu Lizard wrote:
>> I've had bad luck jacking my motorcycle. It can be done, but it requires
>> a hockey puck and other shims because the frame is at different heights
>> on the left and right. I was thinking about welding a fixture that fits
>> into my ATV jack using the holes that are in the jack already.
> That's exactly what I did for my SV650S. Get an angle grinder, a drill,
> some flat steel stock, and start measuring, cutting, and trial fitting.
> When you get all the pieces the correct size, take it to a welder and
> have him weld it up. It worked like a charm. The fixture bolted into
> the holes on the jack, and there was a cross-bolt that went through the
> two uprights on the fixture and through a matching drilled boss on the
> bottom of the engine. In the rear were two saddles that supported the
> frame where the swingarm pivot was.
Thanks. I'll probably nearly exactly reproduce your design. If you have a
photo handy ...
Despite my self-professed mechanical ineptitude, I'm actually an OK welder
both with a stick and with more sophisticated equipment. Very likely what
I'll do is put it together with angle iron and pop rivets or small bolts to
be sure the dimensions are exactly right (but not use it to jack!), then
take it to a machine shop and have them hit the joints and seams with a
welder.
The last time I used a welder was about 2 years ago, and I did a truly
bonehead maneuver. I did a lot of welding in a short-sleeved shirt in a
4-hour period. By the time I got home that night I realized what I had
done. I had UV burns on my neck and above the gloveline. My skin hurt like
hell, turned red, and peeled over the next several days. It was like a
sunburn on steroids. I did not enjoy it.
One thing I have to say about stick welding, as I acquired this skill many
years ago ... it isn't something you learn in a day. The motions involved
to strike an arc, control the arc, compensate for the shortening rod, etc.
take a bit of practice. I do work like a pro when I'm free to position the
thing I'm working on. How some of the pros are able to weld at odd angles
... that is outside my skill level.
The Lizard
Posted by Mark Olson on April 15, 2009, 10:38 am
Jujitsu Lizard wrote:
>> Jujitsu Lizard wrote:
>>> I've had bad luck jacking my motorcycle. It can be done, but it
>>> requires a hockey puck and other shims because the frame is at
>>> different heights on the left and right. I was thinking about
>>> welding a fixture that fits into my ATV jack using the holes that are
>>> in the jack already.
>>
>> That's exactly what I did for my SV650S. Get an angle grinder, a drill,
>> some flat steel stock, and start measuring, cutting, and trial fitting.
>> When you get all the pieces the correct size, take it to a welder and
>> have him weld it up. It worked like a charm. The fixture bolted into
>> the holes on the jack, and there was a cross-bolt that went through the
>> two uprights on the fixture and through a matching drilled boss on the
>> bottom of the engine. In the rear were two saddles that supported the
>> frame where the swingarm pivot was.
>
> Thanks. I'll probably nearly exactly reproduce your design. If you
> have a photo handy ...
I do somewhere, but lost a lot of it during my last home server
migration. I copied a design I found on the svrider.com website.
But it's really nothing special, and you need to customize it to
fit your bike anyway. A simple pencil sketch to decide what you
want it to look like should suffice to get you started.
> Despite my self-professed mechanical ineptitude, I'm actually an OK
> welder both with a stick and with more sophisticated equipment. Very
> likely what I'll do is put it together with angle iron and pop rivets or
> small bolts to be sure the dimensions are exactly right (but not use it
> to jack!), then take it to a machine shop and have them hit the joints
> and seams with a welder.
I don't see how I could have used either bolts or pop rivets to mock up
my design as it had a lot of butt welds. Why don't you just hike over
to Tractor Supply and buy one of these:
http://www.tractorsupply.com/webapp/wcs/stores/servlet/ProductDisplay_10551_10001_36264_-1______14220 |61703|61704|14238|36264?listingPage=true&Special=false
Hobart Handler 125 EZ Welder PRICE: $299.99
Single knob control. Ready to weld out of the box. Sample spool of Hobart
flux core 0.030 diameter wire included. Welds 18 gauge up to 3/16 in
steel. Spare 0.030 in diameter contact tips included. Plugs into 115
VAC household power for easy set-up. 8 ft comfort fit gun. Spool shaft
to accommodate 4 inch spools (optional hub kit available for 8 inch
spools). 10 ft work cable with clamp. 5/3/1 Warranty. Learning how to weld
shouldn't be complicated. The Handler 125 EZ makes it easy with a single
knob control, enabling you to set the amperage by the metal thickness
you are welding. The EZ eliminates the need to set wirefeed speed
and voltage separately, as well as the need for shielding gas/cylinder
purchase. Designed for the novice or the expert, this powerful lightweight
welder reduces setup time to get the job done quickly. Just plug the
welder into 115 VAC, select your steel thickness and weld up to 3/16
in mild steel. The Handler 125 EZ comes "ready to weld" and includes a
sample spool of Hobart flux core welding wire. Great for making repairs,
welding steel pipe fencing and more with self-shielded flux core wire.
Posted by Jujitsu Lizard on April 15, 2009, 10:52 am
> I don't see how I could have used either bolts or pop rivets to mock up
> my design as it had a lot of butt welds. Why don't you just hike over
> to Tractor Supply and buy one of these:
>
http://www.tractorsupply.com/webapp/wcs/stores/servlet/ProductDisplay_10551_10001_36264_-1______14220 |61703|61704|14238|36264?listingPage=true&Special=false
> Hobart Handler 125 EZ Welder PRICE: $299.99
Man, when the users of this group aren't busy threatening each other or
calling each other racists, there is some very useful information passed.
Thank you!
Seriously, I'm an apartment dweller (by choice) and I try not to accumulate
baggage. I'd rather have a machine shop or a bored farmer (around here) do
it than pick up a welder. I used to own a welder. Big. Heavy. Used
infrequently. Nah.
My design will be slightly different than yours, in that I will use
angle-iron. So I will be able to mock it up before having someone go over
it with a welder.
Thanks for all! The Lizard
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> requires a hockey puck and other shims because the frame is at different
> heights on the left and right. I was thinking about welding a fixture
> that fits into my ATV jack using the holes that are in the jack already.