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Post by Professor Moriarty on Jan 15, 2018 19:27:26 GMT -5
My mother called me the other day quite frantic and somewhat depressed. She asked me to help with a PWD car for a scout that lost his father at an early age. The boy’s mother has been bedridden for months with her own ailments... and the poor little fella still didn’t even have a Weblo uniform to date. I calmly told her “chill out mama...Laser-Man is on the case.” She was very relieved to hear this.
Her relieved response. |
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Post by Professor Moriarty on Jan 15, 2018 19:55:22 GMT -5
Due to my work schedule... I would only be afforded 1 day to work on the car. However... if Crash Enburn could build a winning car in 45 minutes... I figured that it should only take me about 20 minutes to pull off the same feat. |
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Post by Professor Moriarty on Jan 15, 2018 21:30:25 GMT -5
Soooooo.... I already had a few bodies routed out... and I chose one that had a 4.75” wheelbase.  |
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Post by Professor Moriarty on Jan 15, 2018 22:24:42 GMT -5
Using the Clear Jig certainly makes things easy as pie. I make my bodies about .315” thick these days. When drilling the rear... I put a piece of clear acrylic .038” thick below the car. After drilling the first hole in the rear...Micro’s technique of inserting a pin gage into the hole to keep things lined up for the other rear hole is a must. After that... I remove the acrylic shim and line up the body for the DFW. Lastly, I flip the car over and shim it .055” to drill the raised hole.  Then I draw some lines to show how deep I intend to inset the DFW... and put it onto the disc sander and remove to the line. Notice that I drew the inset on the underside of the car and got mixed up as a result. I removed the .075” inset from the wrong side. Doh! |
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Post by Professor Moriarty on Jan 15, 2018 22:41:28 GMT -5
I suppose that I could have put the material back on with a strip of balsa... and with the reduced weight over there it may actually be preferred! Instead I started again and figured that maybe I could still get it done at Crash’s breakneck pace.  After repeating the steps with another stick of wood... I built up some CA glue around the axle holes. The rules were straight out of the box, so no washers allowed. While doing this... I was reminded of a recent post by PWD CNC and sprayed some axles with jig (I had no petroleum jelly on hand)... inserted the axles in the holes... and slathered CA glue all around the axle area. I did not use accelerator on the glue but wait for it to set on its own and gave a twist of the axles to crack the seal and pull them out. |
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Post by Alphonso on Jan 15, 2018 23:04:25 GMT -5
After repeating the steps with another stick of wood... I built up some CA glue around the axle holes. I use clear nail polish. A tip that Glen Jewkes gave me.  |
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Post by Professor Moriarty on Jan 15, 2018 23:08:12 GMT -5
 I spread the glue all around the rear holes in an effort to seal the wood in preparation of tacking the Cub Weights onto the car.  After the glue is dried I smooth it with some 400 and then 600 grit sandpaper. I add a small dollop of Gorilla brand CA glue onto the weight... being careful not to get any glue close to the edges of the weight.  |
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Post by Professor Moriarty on Jan 15, 2018 23:15:26 GMT -5
The weight sticks pretty quickly because the wood has already been sealed with CA glue.... so I then go back in and add some CA glue to fillet the edges where the weight meets the wood.   After the side weights are attached, I put some glue behind the rear axle spar and lay down a row of 1/4” cubes.  |
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Post by Professor Moriarty on Jan 15, 2018 23:21:42 GMT -5
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Post by Professor Moriarty on Jan 15, 2018 23:27:06 GMT -5
  This is close to my final setup. I fixed it so that the right rear wheel was just a touch lighter than the left rear.  I put a little bit of CA glue on the top of the weights, and stuck the clear shield on the weight. |
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Post by stumpm2 on Jan 15, 2018 23:45:55 GMT -5
Looks goood.
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Post by Professor Moriarty on Jan 15, 2018 23:51:40 GMT -5
 I took some .01” polycarbonate and cut it into a circle and drilled a hole in the middle. For the shield on the raised wheel... I put a small bead of white glue on the inner edge of it and let it almost dry... then stuck down polycarbonate circle. Usually it is an acetate circle instead of polycarbonate.... but I recently acquired the polycarbonate and was eager to start using it.  When my mother told me about the race... My only questions were... -When is the race? -Did they give the boy a set of rules? -Should I build something over the top with fenders and... This last question she cut me off mid-sentence and answered “No! They might think he bought it or something.” A tapered rear made of balsa is an indulgence that seemed subtle enough not to raise any eyebrows. I cut a strip of the .01” polycarbonate about 1.625” wide and covered it with double sided vinyl tape. After the bottom cover was on the car I cut it to length. A La John Dolshenko... I smeared some graphite near the axle holes and put some Legends wax to dry near the axle holes.  |
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Post by Professor Moriarty on Jan 16, 2018 0:29:54 GMT -5
I went looking everywhere for some revell axles and came up empty...
So... I filed off the that little triangle crap (flashing?) that connects the head to the shaft on the box axles.
I did this by holding the axle in my hand and filing away at it.
Tossed those axles into the Dremel Station with a 3jaw chuck on it to wet sand them with 600 grit paper... (and then straight to 1500) lol!
Washed them off really well with alcohol and paper towels.
Found some kick ass Warp Speed wheels I had for years...
they are 1.6g and had all the markings inside and out.
Prepped those suckers with wax... hit the axles with Jig...
Dropped on some oil and looked for some plastic to use as a tuning board.
At this point... I was about 7.5 hours behind Crash’s build time...
and on the 3rd run down the tuning board the car was steering a little over 4 inches in 4’. So I called it good and went looking for a box.
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Post by Professor Moriarty on Jan 16, 2018 0:46:04 GMT -5
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Post by Ember on Jan 16, 2018 16:04:49 GMT -5
Nice work Joe...I'm certain it will bring a smile to the boys face.  |
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