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Old November 12th, 2017, 05:34 PM   #1
fierocious1
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Default New skate/truck/plate project

NTS, DA45 from SA trucks(SG). 3/4" cushions on a bar stock plate. 195mm mount. If my theory is correct, if using cushions above and below the truck, the setup should perform identically to my moded SG DA45 I use now but with hope fully less weight. My kingpins are overlength anyway so no change there, truck weight will go down considerably. Trucks will get lightened some from milling the pockets and clearancing on the bottom of the trucks. My last plates were lighter than SG White magnums of the same size, without radiusing and polishing corners down. The goal is light weight and possibly titanium flips too. Going to take some time but will post step by step.

Last edited by fierocious1; November 25th, 2017 at 09:16 PM.
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Old November 13th, 2017, 11:06 PM   #2
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Subscribed. I always enjoy seeing the results of any machinist. My buddy has a 2D CNC machine and he makes aluminum molds for injecting soft plastic fishing lures.
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Old November 25th, 2017, 08:59 PM   #3
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Quote:
Originally Posted by hoohoorjoo View Post
Subscribed. I always enjoy seeing the results of any machinist. My buddy has a 2D CNC machine and he makes aluminum molds for injecting soft plastic fishing lures.
I worked at Igloo Coolers in Brookshire TX, It's wild to see how fast stuff can be made in plastics. They did injection, blow mold and another type I can't think of right now. The mold is rotated in all axis during cool down for uniform thickness of the parts.
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Old November 25th, 2017, 09:10 PM   #4
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Default Update 112517

I worked on the trucks a little today. But need to clearance a bit more on the bottoms of the trucks for more room during lean. Counter sunk the KP holes for a little more angle. Opened up the cushion pockets on the top side of the trucks to accept standard 1" cushions. The goal is a lower CG of force at the truck. I am thinking that with the lower CG, a little more traction could be available. The pivot is fairly high in the SG DA 45s and with my cushion configuration, traction is very good, but I want to try to get just a little more....

Truck installed, gap to be shimmed at this point even with .750 tall cushions. I will be using over length KPs on one of my bar stock plates.
https://www.flickr.com/photos/435057...posted-public/

The SG KPs are too short and are installed to just mock up the fit.
https://www.flickr.com/photos/435057...posted-public/

Machined truck bottom, semi pockets. Going back to the mill later this week to hit it with a larger mill for more clearance without getting closer to the axle.
https://www.flickr.com/photos/435057...posted-public/

Later if this all works out, I will do the same work to a set of magnesium SG SA trucks, in preparation for magnesium bar plates. Possibly flips as well.
Stay tuned...
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Old November 25th, 2017, 11:16 PM   #5
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Default clearanced the trucks

Just a little more. I need to get a larger end mill. About a 1 3/8" to widen the area instead of going in deeper. But it will work for now. Spacer in place to make the cushion a 1" upper. No cups on top, probably not use any on bottom either.

https://www.flickr.com/photos/435057...posted-public/

BTW, thanks Doc for help with supplying the trucks.
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Old November 30th, 2017, 01:12 AM   #6
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Default weigh in

SG DA 45 trucks 105 grams
https://www.flickr.com/photos/435057...posted-public/

vs

Modified SG SA 80 grams
https://www.flickr.com/photos/435057...posted-public/
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