MOTOBRICK.COM
TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: gone_ape on August 16, 2017, 11:22:55 PM
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MG's original post about the jig is here:
http://www.motobrick.com/index.php/topic,9781.0.html
Gryph....IT WORKED!!! I took the liberty of taking a few photos to maybe help illustrate how I straightened my main RT fairing bracket with amazing ease, using Gryph's plans.
I haven't figured out how to add text next to the pic, so bear with me, please.
1st up was to obtain all the materials to build this thing, then mark, drill and assemble the jig. Gryphs original post explains this in detail. Instead of a pencil, which, oddly I didn't have one long enough, I used a section of STRAIGHT 1/4" dowel and sharpened it in an old school pencil sharpener. The hole saw is 2 1/8" as Gryph stated, rendering about a 2" plug which the dowel inserted into. I taped the plug with tape, stuck it in the end of the 2" PVC pipe and rolled it on blocks to make sure it was true.....
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Next up was to assemble the fairing bracket to the jig. I used (2) 3 1/2" 1/4-20 bolts and (2) 2 1/2" 1/4-20 bolts and nuts from the hardware store to bolt the bracket down using the original rubber grommets, cone and flat washers from the bike.
No offense, Gryph, but I just couldn't wrap my head around how or where to beat on the thing to bend it it where it needed to go, so I had an extended piece of square stock laying around and mounted it up using a couple of bolts and flat washers. My thought was to see if I could torque it into place...it worked! I tightened up the bar JUST enough to keep it stable as I did not want to crush the bracket.....
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Once everything was in place, It came time for the measurements.... I found it necessary for the pointed dowel to be as sharp as possible, and to be assembled as close to the jig base as possible--almost touching the base....because of the length of the dowel and the pvc pipe, I could slide the pvc tube within the bracket's cradle to the necessary height.
And wouldn't you know...it was off!!!!
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I secured the little bench from sliding around, grabbed hold of the bar stock "lever", gave it a little push a couple of times .....and I'll be darned it it didn't go right back to straight alignment !!! HOO-Freakin-rah!!! SOooooo easy.... I spent 400 times the time just making the jig !!!
Note: after I was satisfied with the alignment, I unbolted it from the jig to see if the "legs" (arms?) of the bracket were distorted at all... one was, as the bracket would not lay flat on all 4 grommet mounts against the jig..It "was flat" before I started to tweak.... so I simply gently pushed here and there on the arm till it layed flat correctly on the jig, re-bolted it back up and re-checked the alignment again....PERFECT....
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MANY MANY THANKS to you, Mighty Gryphon, for coming up with the engineering specs to do this. Well Done !!
I was truly surprised to see how easily the bent bracket could be restored to original spec with very little investment and effort.
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Got some pretty fart smellers on this site!
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Nice job! Great photos and write up! Very happy to hear that it worked for you.
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Another B&D Workmate... This time with custom paint!! NICE :2thumbup:
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That WorkMate bench table is one of the most underrated but overused piece of kit in my world.. helping me screw things up for over 25 years strong!!!