Full-Suspension Mountainboard Design

Board building, design, technical innovations and new equipment. Post and discuss your latest creations, ideas, designs and builds here(Pictures not required LOL)

Moderator: BgSurfer

Post Reply
User avatar
joshpit2003
Slightly dirty
Posts: 149
Joined: Wed Feb 09, 2011 11:31 am

Full-Suspension Mountainboard Design

Post by joshpit2003 » Fri Dec 16, 2011 7:58 pm

Image
Image
Image
Image
Image
Image

Joshua Tulberg

User avatar
joshpit2003
Slightly dirty
Posts: 149
Joined: Wed Feb 09, 2011 11:31 am

Post by joshpit2003 » Fri Dec 16, 2011 8:01 pm

Hey guys. Thanks for all the help and taking my survey.
The above images are my final "poster" for my Product Design class.
The teacher really enjoyed it and hopefully you guys will too.

It's an interesting concept that could maybe one day be made into a reality.
-Josh

User avatar
Jimmy Chaos
Seen it all
Posts: 2543
Joined: Sat Aug 22, 2009 9:34 am

Post by Jimmy Chaos » Fri Dec 16, 2011 8:03 pm

That looks really really good, awesome job!
.............:D................
" Blatant Self Promotion "
__________________

[SIZE="5"][color="Red"][font="Comic Sans MS"]Habitual Suicide[/font][/color][/SIZE]
[SIZE="3"][color="black"][font="Comic Sans MS"]-Mountainboarding T's-[/font][/color][/SIZE]
[color="DeepSkyBlue"][color="Blue"][SIZE="1"]
"Wear a helmet, don't drown in your own puke"
[/SIZE][/color][/color]

User avatar
McCarver
Gringo
Posts: 11231
Joined: Mon Apr 27, 2009 6:14 pm

Post by McCarver » Fri Dec 16, 2011 9:17 pm

fancy, nice work josh
Like us on facebook for even more Mountainboardy Goodness https://www.facebook.com/surfingdirt

User avatar
BgSurfer
Posts: 3353
Joined: Thu May 28, 2009 12:55 pm

Post by BgSurfer » Fri Dec 16, 2011 11:05 pm

Very cool Josh...

Don't stop designing/inventing.
~~~~~

Keeping the Stoke
http://www.bgsurf.blogspot.com/2009/10/street-carver-keeping-stoke-riding.html
The older I get, the better I was...
Ride what you like. :cool:[color="Green"][/color]

User avatar
Mikael
Old timer
Posts: 1552
Joined: Mon May 11, 2009 5:09 am

Post by Mikael » Fri Dec 16, 2011 11:48 pm

Wow Josh, that's really awesome. You've got a lot of creativity!

User avatar
Mikael
Old timer
Posts: 1552
Joined: Mon May 11, 2009 5:09 am

Post by Mikael » Fri Dec 16, 2011 11:53 pm

Of course, the challenge would to be make it light enough that it could be ridden. With the usual materials, this looks like it would be about 40lbs or more.
How do you control/dampen the steering? I see no eggs or bushings. What's the idea?

User avatar
Skaterdre
Noob
Posts: 67
Joined: Wed Oct 06, 2010 12:46 pm

Post by Skaterdre » Sat Dec 17, 2011 8:54 am

Awesomeness.....This looks like it would be a really fun ride. :)

User avatar
joshpit2003
Slightly dirty
Posts: 149
Joined: Wed Feb 09, 2011 11:31 am

Post by joshpit2003 » Sat Dec 17, 2011 10:51 am

glad you guys got a kick out of it. Thanks!

User avatar
joshpit2003
Slightly dirty
Posts: 149
Joined: Wed Feb 09, 2011 11:31 am

Post by joshpit2003 » Sat Dec 17, 2011 10:59 am

Mikael wrote:Of course, the challenge would to be make it light enough that it could be ridden. With the usual materials, this looks like it would be about 40lbs or more.
How do you control/dampen the steering? I see no eggs or bushings. What's the idea?


two great concerns. Thanks for asking.
Although it is just a "concept", here is my best guess at answering:

For the weight:
The front truck piece would actually be hollow. It would be a lost-wax cast-aluminum piece with only about a .25" wall thickness. So even though it looks heavy, it wouldn't be the heaviest part. The suspension shafts would be the heaviest parts, because there really isn't any way to use aluminum for such a high-stress, telescoping part.

For the turning:
Since the board sits lower than the truck pivot it will automatically "right itself" when you stood on it, so the springs would not be needed for that purpose. For the "resistance" I imagined an "egg" (shapped more like a tube) could be sandwiched between the two bearings and over the main pivot-axle. And when the truck is tightened down the egg would expand a little and rub on the outter wall of the truck piece and pivot-axle, causing resistance. I pictured the same thing for the suspension parts in order to keep them from "rocking" too-freely.

Anyhow, that's my best attempt at answering those questions.
But yeah, it would be a heavier board. No question about that.
Good observations!

User avatar
Ian@KentATB
Posts: 2386
Joined: Mon May 18, 2009 2:27 pm

Post by Ian@KentATB » Sat Dec 17, 2011 11:14 am

Nice work. You have some smart design skills. Even your bindings look super cool.

Out of interest what level course was this for?
[align=center][font=Impact]www.kentatb.com

[font=Courier New][color=DarkGreen][size=134]Freeriding - it's a monk's life
[/font][/SIZE][/color][/font][/align]

User avatar
Felix_the_Gat
Dirty
Posts: 458
Joined: Sun Sep 18, 2011 10:12 am

Post by Felix_the_Gat » Sat Dec 17, 2011 11:54 am

Very, very well done, Josh.

Your presentation is stylish and clear and your solution to the problem (truck that moves as you jump straight up and down) works well. In addition, you designed a suspension system that eliminates bump-steer.

I think a good deal for recognition needs to go to Brennig. His idea of the upward acting shocks mounted to the axle is the one that separates the turning function from the shock absorption and eliminates bump steer.
I really like your design because the deck is so much lower than most mountainboards. I think your cam truck would allow the deck to clear its edge in a turn.

But, I also think your shocks would have to have some good degree of adjustability to account for differences in rider weight. A heavy person would shorten the shock absorption rate and cause the deck to bottom out and not turn.

Varying spring tension availability and a threaded retainer cap mated to the shock shaft would be a couple of ways to control tension. Maybe an elastomer or some other limiter would assure the shocks weren’t overloaded or stopped too suddenly at their limit.

The truck design looks similar to the Carver, Original, Nuclear Pickle and K2 scooter designs. Is it a cam type resistance on a horizontal king pin type system? If so, it was a good and logical choice. In production, all extraneous weight would be shaved off the material and the truck could be made very light and strong. I kinda like the design you did on the truck. It reminds me of a automotive truck grille from the 1940s.

Great job.

User avatar
Ben
Old timer
Posts: 1697
Joined: Sun Aug 28, 2011 9:01 am

Post by Ben » Sat Dec 17, 2011 11:58 am

holy goodness!

User avatar
belac
Old timer
Posts: 1425
Joined: Tue Jul 21, 2009 12:08 am

Post by belac » Sat Dec 17, 2011 4:55 pm

thats a piece of art right there bud, very nice work.

User avatar
mario64
Posts: 595
Joined: Wed Sep 14, 2011 2:21 pm

Post by mario64 » Sat Dec 17, 2011 5:59 pm

That is freakin awesome grip tape, cool board as well.

User avatar
pd2h
Posts: 785
Joined: Fri Feb 05, 2010 8:44 am

Post by pd2h » Mon Dec 19, 2011 3:36 am

Really love the design but I am not quite sure how well it would work as if the suspension compresses will the deck etc not go down? Just looks like the deck will bottom out all the while as the suspension compresses..?
If the whole suspension assembly was mounted the other way up I think it may work better perhaps...
Not to diss your design at all just my thoughts does look awesome though :)

User avatar
Joe'snewboard
Noob
Posts: 11
Joined: Fri Feb 12, 2016 8:18 am

My next school project.

Post by Joe'snewboard » Thu Feb 18, 2016 9:10 am

Hey dude. My name is Joseph. I live in North Idaho and there are no mountain board dealers here so I have to make one if I want one. I stumbled across your design on google pictures while I was looking for a board to make and loved it, I will try to keep you updated in the manufacturing process dude, maybe even with pictures. I will try to talk to you soon.

Post Reply

Return to “The Shed”

Who is online

Users browsing this forum: No registered users and 1 guest