board center marks

[mtnpig]

You can figure it out if you have a flat surface by measuring contact points and set backs and on and on but its difficult to get a true flat bench some times when the lengths get over 180cm. Why don't the board builders put a center line mark on the blanks? Is this a kook meter thing or am I missing the point?

[Pat Donnelly]

Try standing the board up against a wall or garage floor. Once determined I usuall mark mine with a paint stick. Have you tried to mount your Rossi WC from the center? I am as far forward as possible on mine and I need to go about another 1" to get to the true center but the inserst were installed too far back.

[Donek]

I'm not 100% sure about the other board builders, but usually we put the insert pattern centered over the boards center line, or offset centerline if the board has offset. This is a fairly common practice. As a result you can simply measure to the center of the hole pattern and you've got it. Otherwise just move the same distance out from the inserts closest to the centerline and you'll be centered. I try to always include a document that indicates this, but we board builders get so engrossed in all the other things that we forget that what's obvious to us isn't necessarily obvious to the rest of the world.

[soulrider]

I thought I had this down but now I'm not sure.
Isn't the narrowest point of the board (sidecut) the highest point of camber on a board ? I've used this method to get in the ballpark and made very minor adjustments from there.

[mtnpig]

To Pat for a common sense approach to use a flat wall to determine contact points. That WC190 will be the death of me but it is my choice! Hey Sean does a FC171 have any setback advantage or is it set up centered on the hole pattern. I noticed that the Rossi WC had the hole pattern set with a 1.5cm set back in mind.

[Bordy]

Wall method is the best for sure but walls are not always flat, Dorr frames however!!:rolleyes:

[JoelP]

If you have a ski/snowboard straight edge tool (usually used to check base flatness) you can use it at the tip and tail to find where the Tip/Tail leaves the snow. this is the end of the contact point beginning of the true running edge. Run the straight edge along the edge where it is in contact with the base, you'll easily see the edge curl away from the straight edge.

I have a Rossi WC 184 and a 190 (as too Pat, above) I rode them for a very short time going by the hole pattern. That was a big mistake. They rode well but they didn't feel great. I then measured the running surface and found the true center, which by the way matched the true center of the side cut also. I mounted my stacne to match this real center and I am on both boards at the most forward set of holes possible now. There is a world of difference now and I believe this is where they should be ridden. Even the 190 is so smooth I love that thing now. Transitions are way better than they were in the old mounting position.

Also as quick reference I have F2's 186 and 172 and their hole pattern lined up just about perfect with the center of the true running length. I don't know why the Rossi's were so far off, the 190 was twice as far off as the 184, but they sure ride good now. I have a funny feeling that Rossi just mounted their jig to the tail and they used the same jig on all their boards so as the boards got longer the stance went farther back...bad bad!!!! (Atleast for me that was bad)

Joel

[Jack Michaud]

Originally posted by Donek
I'm not 100% sure about the other board builders,

I believe the vast majority of Burton carving decks were offset to the back about 15-25mm, depending on the model.
-Jack

[Donek]

Originally posted by soulrider
I thought I had this down but now I'm not sure.
Isn't the narrowest point of the board (sidecut) the highest point of camber on a board ? I've used this method to get in the ballpark and made very minor adjustments from there.

This is only correct if the board has no taper. Taper means the tip of the board is wider than the tail.

The Freecarve series has no set back.

[scottishboardracer]

I found the inserts on the rossi world cups was 40mm behind centre when I measured, despite the paperwork saying they were 20mm back. (on the 184cm and on the 159cm)
Mike.

[Donek]

Originally posted by scottishboardracer
I found the inserts on the rossi world cups was 40mm behind centre when I measured, despite the paperwork saying they were 20mm back. (on the 184cm and on the 159cm)
Mike.

It's imprtant to remember that a 20mm offsett will produce a 40mm difference between the distance from the two rise lines. This is because in moving the center back 20 mm you lengthen the front distance by 20mm and shorten the back distance by 20mm resulting in a difference of 40mm.