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Old 12-14-2013, 10:51 AM   #1
Joe Blow OP
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Thumb New Mojoblocks for the new Harbor Freight Tire Changer!

Hello Folks -

Joe Blow here, purveyor of the Mojolever and Mojoblocks, accessories for the Harbor Freight tire-changing stand. Some of you know me better as Joe Frickin' Friday, a tedious, meddlesome moderator from BMWST.com.

Good news: in case you missed it, Harbor Freight recently resumed sales of the motorcycle attachment for their portable tire changing stand. They have changed the style of the rim-grabbing jaw though, so my original-style Mojoblocks no longer fit it.

More good news: after much fiddling and figuring, I now have a new version of Mojoblocks available for sale.

My updated web page is here, with all the pictures and info you'll need in order to make sense of what I'm saying:

http://home.comcast.net/~prestondrake/mojoblocks.htm

OK, I lied, just a little. There are actually TWO new versions of Mojoblocks. "Type 2" fits what Harbor Freight is currently selling, and "Type 3" fits some of the imitators that were being sold by other vendors over the past few years. If you already have your stand, take a look at the jaws and compare them to the chart on my page; if you haven't yet bought your stand, it's just about a sure thing that you will need Type 2.

As before, the price is $30; you can email me at prestondrake@comcast.net for complete purchase instructions.

Thanks!
-Mitch
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Old 12-14-2013, 01:02 PM   #2
kenstone
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Good to know, something I was waiting for, but made some out of a cutting board.
Even though my time has no value, I would have gladly paid $30 for a set.
I have found stretching a piece of bicycle inner tube over the blocks keeps the wheel from turning when applying lever pressure

kenstone screwed with this post 12-14-2013 at 01:18 PM
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Old 12-15-2013, 12:35 PM   #3
Joe Blow OP
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One caveat I just learned about:

The new motorcycle attachment from Harbor Freight comes with a single centerpost - and it's a hollow tube 1 inch in diameter. WTF were they thinking??? There are a lot of bikes with axles skinnier than this, so it won't fit through the wheel!

The good news is that you can replace this with a solid steel rod up to 11/16" in diameter, 2 feet long. www.mcmaster.com will have what you need, although you might find better prices (and no shipping charge) from a local metal vendor in your area.
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Old 12-15-2013, 10:36 PM   #4
eakins
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nice Mitch. still loving my Mojo bar & blocks from back in my bmwrt.com days.
i followed your story from buying a stove and learning to powder coat to current.

i posted this thread here:
http://www.advrider.com/forums/showthread.php?t=756992
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Old 12-15-2013, 10:39 PM   #5
eakins
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Quote:
Originally Posted by Joe Blow View Post
One caveat I just learned about:

The new motorcycle attachment from Harbor Freight comes with a single centerpost - and it's a hollow tube 1 inch in diameter. WTF were they thinking??? There are a lot of bikes with axles skinnier than this, so it won't fit through the wheel!

The good news is that you can replace this with a solid steel rod up to 11/16" in diameter, 2 feet long. www.mcmaster.com will have what you need, although you might find better prices (and no shipping charge) from a local metal vendor in your area.
there is alot of WTF HF with this new updated mc attachment.
it's almost like they tried to make it as poorly as possible.
funny considering most HF tools generally get getter over time.
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Old 12-16-2013, 11:04 AM   #6
sagedrifter
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Good to hear, I'm making my own right now and mine look the very similar. Thanks for the effort, if mine don't work well I know what I'll try next, hope you sell many of them.
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Old 12-21-2013, 01:41 PM   #7
Uncle Pollo
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bump ... so i can find it again

will assemble the tire changer on monday and will purchase the correct blocks.
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Old 12-21-2013, 05:58 PM   #8
Smoke Eater 3
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I welded an attachment for the that tire changer so it will slide into the receiver of my truck. It makes tire changes in the driveway easier and manageable on the side of the road and at the track.
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Old 01-12-2014, 11:22 AM   #9
rube
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Threaded rod size?

Hello,

I've got one of the new versions of the HF MC tire changer.

Has anyone figured out the size and thread pitch of the approx. 1 inch stub on the end of the vertical red tube that is suppose to go through the wheel bearings of the wheel?
It is very close to the size of the 3/4 inch all thread and bolts at Lowes but not exactly correct. I figure it is metric but there were no metric fasteners large enough at Lowes for me to figure out the exact size. Maybe 17mm?

I would like to make a couple different center posts that I can actually fit through the wheel bearings of my bikes. I could weld any diameter rod or tub on another bolt of the correct size and thread pitch but I just could not figure it out.

Also, if you have made a hitch mount for the MC tire changer could you post a picture? I think I'll make one but wanted to see what others have come up with first.

Thank you,

rube
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Old 06-13-2014, 03:47 PM   #10
headshrink
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I recently got the HF MC attachment as well, but guess what..... it's not compatible with the HF tire changer base I had ordered from them right when they originally discontinued the MC attachment a couple years ago.

At first I thought the threaded rod inside the new attachment was too bent to screw onto the base properly, so I exchanged it for a new one at their retail store. Unfortunately it has the same problem. What I figured is happening is they must have changed either the rod size slightly, or the thread pitch. It feels like it will engage the first thread or so, then Jams. I know my base unit isn't damaged because the cap that comes with it works perfectly. It sort of holds itself, but it's too high, and probably only SEEMS fairly stable because it's really only jammed on. Has anyone else had, or heard of this problem? Unfortunately the only fix I can think of is buy a new base unit.
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Old 03-20-2015, 10:56 AM   #11
elkgrichard
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Purchased the harbor freight motorcycle tire mounter today and noticed the center bar will not fit through my wheel bearings?

Any fix for this or am I doing something wrong here?
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Old 03-20-2015, 12:08 PM   #12
BrainBender
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Cool2

Quote:
Originally Posted by elkgrichard View Post
Purchased the harbor freight motorcycle tire mounter today and noticed the center bar will not fit through my wheel bearings?

Any fix for this or am I doing something wrong here?
See post #3 above.
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Old 03-29-2015, 09:28 PM   #13
voodooskin
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For those of you with the new HF tire changer:

I was in the same boat, the stock bar would not fit through the wheel of my '97 K1100RT.

A 2 foot hunk of 3/4 - 10 (which is an SAE threaded bar) - commonly available at any US hardware store in the steel section - works well enough. It will thread into the hole although it's not _perfect_. I duct taped the part that would contact the wheel.

The correct thread is metric. I had it measured but now I forget exactly what it is, M10 maybe. The bar above works well enough for me not to go have a machine shop thread a hunk of bar but I'm OK with half ass solutions generally.

Props to Joe for the mojo bar and mojo blocks, they have worked well for me with the above setup, good stuff and better than half ass
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Old 04-06-2015, 12:47 PM   #14
TuefelHunden
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The whole is a 20mm thread. Been trying to do some red neck engineering to find something like a 20mm male to 3/4 female without success. Gonna break down and just get the 3/4 threaded rod.

Just a question: Joe is still making the blocks and levers, right??? How long does it usually take for a reply?
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Old 04-06-2015, 02:55 PM   #15
eakins
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Quote:
Originally Posted by TuefelHunden View Post
The whole is a 20mm thread. Been trying to do some red neck engineering to find something like a 20mm male to 3/4 female without success. Gonna break down and just get the 3/4 threaded rod.

Just a question: Joe is still making the blocks and levers, right??? How long does it usually take for a reply?
did you email him from his website?
he spends his time on http://www.bmwrt.com/
and so i doubt he's been even checking this forum much.
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