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Make skate trucks.

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Buddha43
Posted: Sat Mar 14, 2009 7:44 pm Reply with quote
ORDER OF THE SKULL 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 Reply with quote
Joined: 11 May 2007 Posts: 183 Location: Reno
TAOS wrote:
Dan, are you really from the USA?

+1

you do talk like a wild and crazy guy.

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wide boards, loose Indys, and good weather.
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frokster
Posted: Sun Mar 15, 2009 2:54 pm Reply with quote
Joined: 29 May 2008 Posts: 22 Location: Wevelgem, Belgium
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 Reply with quote
Site Admin Joined: 27 Oct 2001 Posts: 63453 Location: S&B HQ
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.

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buzzbuzz
Posted: Sun Mar 15, 2009 3:35 pm Reply with quote
Joined: 11 Sep 2008 Posts: 2133 Location: Wisconsin
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....

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Machinesound
Posted: Sun Mar 15, 2009 3:51 pm Reply with quote
Joined: 21 May 2006 Posts: 12 Location: SoCal
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 Reply with quote
ORDER OF THE SKULL ORDER OF THE SKULL
Joined: 21 Aug 2005 Posts: 4680 Location: san jo, bro.
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 Reply with quote
Joined: 21 May 2006 Posts: 12 Location: SoCal
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 Reply with quote
Joined: 05 May 2009 Posts: 28
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 Reply with quote
Joined: 02 Nov 2008 Posts: 3192 Location: Michigan
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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