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Buddha43 |
Posted: Sat Mar 14, 2009 7:44 pm |
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ORDER OF THE SKULL
Joined: 15 Sep 2004
Posts: 4532
Location: P.Hill, CA
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Reno_Rotary |
Posted: Sat Mar 14, 2009 9:22 pm |
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Joined: 11 May 2007
Posts: 183
Location: Reno
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TAOS wrote: Dan, are you really from the USA?
+1
you do talk like a wild and crazy guy. |
_________________ wide boards, loose Indys, and good weather. |
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frokster |
Posted: Sun Mar 15, 2009 2:54 pm |
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Joined: 29 May 2008
Posts: 22
Location: Wevelgem, Belgium
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Dan wrote: Yop Cappy old russian cylinder from rusian motorbikes is a good idea + magnezium
i can't imagine that there are a lot of old russian motorbikes in the US... |
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slob-air |
Posted: Sun Mar 15, 2009 3:18 pm |
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Site Admin
Joined: 27 Oct 2001
Posts: 63453
Location: S&B HQ
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Machinesound wrote:
Before you start casting, you need a design that is going to work.
Then you need a pattern matching design/blue print.
The pattern has to allow for 2% shrinkage of the alloys upon cooling (making a direct copy of an existing truck will make a shrunken truck)...
Once you have a casting it needs to be finished and machined using belt sanders, mills, drill presses etc. You will need to engineer and install good axles. You need to fabricate fixtures with proper alignment for producing the relationships between the critical points of motion. If any part of the machining process is off, you have a truck that has NG geometry, or you've just cast, machined, finished some junk.
Not a task for the impatient.
And you need the design to incorporate locators so the pivot, kingpin yolk and mounting holes are easily located and properly drilled.
Magnesium is a waste of time, money and labor. |
_________________ >>>>>Get your S&B Stickers here<<<<< |
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buzzbuzz |
Posted: Sun Mar 15, 2009 3:35 pm |
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Joined: 11 Sep 2008
Posts: 2133
Location: Wisconsin
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slob-air wrote: Machinesound wrote:
Before you start casting, you need a design that is going to work.
Then you need a pattern matching design/blue print.
The pattern has to allow for 2% shrinkage of the alloys upon cooling (making a direct copy of an existing truck will make a shrunken truck)...
Once you have a casting it needs to be finished and machined using belt sanders, mills, drill presses etc. You will need to engineer and install good axles. You need to fabricate fixtures with proper alignment for producing the relationships between the critical points of motion. If any part of the machining process is off, you have a truck that has NG geometry, or you've just cast, machined, finished some junk.
Not a task for the impatient.
And you need the design to incorporate locators so the pivot, kingpin yolk and mounting holes are easily located and properly drilled.
Magnesium is a waste of time, money and labor.
And then you get so frustrated that you throw the mass of metal at your car.
And then you go to the local skateshop and buy some.
and then you get home and figure out how much money and time you just wasted.
And then you vow never to attempt any crazy projects like that again.
And then you skate.....to calm down.
And 3 months later you attempt a different crazy project.
Been there.... |
_________________ You have nothing to offer except pissy verbal drool. Low level shit stirrer is your game. |
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Machinesound |
Posted: Sun Mar 15, 2009 3:51 pm |
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Joined: 21 May 2006
Posts: 12
Location: SoCal
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buzzbuzz wrote: slob-air wrote: Machinesound wrote:
Before you start casting, you need a design that is going to work.
Then you need a pattern matching design/blue print.
The pattern has to allow for 2% shrinkage of the alloys upon cooling (making a direct copy of an existing truck will make a shrunken truck)...
Once you have a casting it needs to be finished and machined using belt sanders, mills, drill presses etc. You will need to engineer and install good axles. You need to fabricate fixtures with proper alignment for producing the relationships between the critical points of motion. If any part of the machining process is off, you have a truck that has NG geometry, or you've just cast, machined, finished some junk.
Not a task for the impatient.
And you need the design to incorporate locators so the pivot, kingpin yolk and mounting holes are easily located and properly drilled.
Magnesium is a waste of time, money and labor.
And then you get so frustrated that you throw the mass of metal at your car.
And then you go to the local skateshop and buy some.
and then you get home and figure out how much money and time you just wasted.
And then you vow never to attempt any crazy projects like that again.
And then you skate.....to calm down.
And 3 months later you attempt a different crazy project.
Been there....
Don't give up on the big plan.
I am skating prototypes right now, so are others.
Doing some design changes for the next run but these are THE best trucks I've skated on. 9.75" trucks that are lighter than 6 Track mags, turn way better than indys and look bitchin. I've spent 30+ years thinking about it and the last 3 years making them. These are soo cool.
....keep an eye out for Doppelganger trucks. |
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ask the doctor |
Posted: Sun Apr 12, 2009 9:05 pm |
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ORDER OF THE SKULL
Joined: 21 Aug 2005
Posts: 4680
Location: san jo, bro.
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Machinesound wrote: keep an eye out for Doppelganger trucks.
let me guess, they have holes in the hangers right? |
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Machinesound |
Posted: Sun Apr 12, 2009 10:00 pm |
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Joined: 21 May 2006
Posts: 12
Location: SoCal
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Just one, in the yoke, for the kingpin...
There's pics over at OMA (with close ups) of a couple of us testing them.
Those are the geometry mules and some new patterns are being worked on as I find time. Right now they turn like no other. |
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helpslip |
Posted: Mon May 11, 2009 9:54 pm |
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Joined: 05 May 2009
Posts: 28
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did i read about these(doppelganger) trucks a year or so back on the c/d forum? i vaguely remember titanium being mentioned, i hope thats still the case. ever since i started swinging a titanium framing hammer(6 years ago) ive imagined skate trucks being poured w/ it. very cool stuff, expensive, but always seemed like it had good properties for trucks..... id dig seeing some shots |
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slavadov |
Posted: Mon May 11, 2009 10:04 pm |
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Joined: 02 Nov 2008
Posts: 3192
Location: Michigan
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helpslip wrote: did i read about these(doppelganger) trucks a year or so back on the c/d forum? i vaguely remember titanium being mentioned, i hope thats still the case. ever since i started swinging a titanium framing hammer(6 years ago) ive imagined skate trucks being poured w/ it. very cool stuff, expensive, but always seemed like it had good properties for trucks..... id dig seeing some shots aren't magun downhill trucks made from titanium? |
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