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snowperson 
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Post subject: Ramp Design
 Posted: Jun 03, 2009 - 01:08 PM
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First post: Jun 01, 2009
Total posts: 20
Status: Offline
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looking into a ramp design, I need some feedback on this.
Taking the size of a dendix matt
1830mm by 1220mm
Ramp
Width 1220mm
Length 1445mm
Height 610mm
Length of 'slope' 1569mm (leaving excess matt for tiedown)
Now, taking my ropey maths into account that would leave angles of 61 degrees at the take off point. Is that correct as it doesn't sound right. Landing slope is about 20 degrees, and its basically a ramp for spinning.
Metal construction, unsure of diameter of metal.
Any comments especially welcome (as I'm a carver not a freestyler) |
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HandD
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Post subject:
Posted: Jun 03, 2009 - 01:49 PM
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First post: Feb 09, 2005
Total posts: 1762
Location: Medway
Status: Offline
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| what length are you talking about, the length of the base or the length of the transition? How are you making the transition as wedges aren't so much fun to spin off. |
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snowperson
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Post subject:
Posted: Jun 03, 2009 - 02:14 PM
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First post: Jun 01, 2009
Total posts: 20
Status: Offline
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Length of base would be 1445mm (will be shorter depending on transition)
Length of transition would be 1569mm , thats without any transition (All I've got at the moment is a wedge)
I'm unsure how to actually work out a decent transition. At the moment my theory will be to design it more for the use of intermediates/suicidal beginners. A secondary ramp would be made depending how the first one goes. |
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sideshow
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Post subject:
Posted: Jun 03, 2009 - 02:27 PM
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First post: Nov 06, 2007
Total posts: 311
Location: down town kings
Status: Offline
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snowperson
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Post subject:
Posted: Jun 03, 2009 - 02:40 PM
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First post: Jun 01, 2009
Total posts: 20
Status: Offline
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Thats whats causing my confusion as well. As someone else stated
the jumps should be about the same deg as the slope, remember tho the slope goes down so if its a 20 deg slope the jump needs be 40 deg at the top of the transition
By my bad maths I'm currently looking at 61 degrees
I may need to get back to the slope with a protractor. |
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sideshow
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Post subject:
Posted: Jun 03, 2009 - 04:13 PM
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First post: Nov 06, 2007
Total posts: 311
Location: down town kings
Status: Offline
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snowperson
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Post subject:
Posted: Jun 14, 2009 - 12:08 PM
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First post: Jun 01, 2009
Total posts: 20
Status: Offline
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Any comments so far?
I have this in Google SketchUp 3d if anyone wants a play.
Any help in finding some transco pipe would be most appreciated as well. |
Last edited by snowperson on Jun 14, 2009 - 01:42 PM; edited 3 times in total
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HandD
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Post subject:
Posted: Jun 14, 2009 - 12:33 PM
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First post: Feb 09, 2005
Total posts: 1762
Location: Medway
Status: Offline
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| looks a bit steep, could be a bit knee jerking as you hit it |
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sideshow
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Post subject:
Posted: Jun 14, 2009 - 01:18 PM
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First post: Nov 06, 2007
Total posts: 311
Location: down town kings
Status: Offline
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sideshow
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Post subject:
Posted: Jun 14, 2009 - 01:20 PM
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First post: Nov 06, 2007
Total posts: 311
Location: down town kings
Status: Offline
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yoda
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Post subject:
Posted: Jun 14, 2009 - 01:34 PM
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First post: Oct 12, 2004
Total posts: 750
Status: Offline
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Way to much science there for me.
I use 25mm x 25mm x 3mm box for all the stuff I build, it has enough meat on the metal to get a good strong weld.
Side show it right that you need to get the uprights upright with the slope, basicly a right angle triangle with the longest side on the slope. I would also make the centres of the uprights 500-600 mm. |
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snowperson
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Post subject:
Posted: Jun 14, 2009 - 03:30 PM
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First post: Jun 01, 2009
Total posts: 20
Status: Offline
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sam132
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Post subject:
Posted: Jun 24, 2009 - 02:16 PM
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First post: Jun 24, 2005
Total posts: 70
Location: Reading
Status: Offline
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| Guess the steepness depends on the angle of the slope its put on? |
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snowperson
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Post subject:
Posted: Jul 04, 2009 - 04:53 PM
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First post: Jun 01, 2009
Total posts: 20
Status: Offline
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Well, I just did a slope measurement. Take off steepness is 19 degrees, landing is 16 degrees.
So, about a 34 degree angle? |
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