OzVMX Forum

Clubroom => Competition => Topic started by: John Orchard on April 03, 2013, 06:29:30 pm

Title: What shape track is dirt-track?
Post by: John Orchard on April 03, 2013, 06:29:30 pm

Hey Guy's,  If this property purchase comes-off, I'd like to put in a dirt-track aswell as a couple of motocross tracks.  Are dirt-tracks all a set shape?  I've only ever seen the kidney shaped one at Broadford with two lefts and one right.

I'm thinking it'd be cool to have a sliding surface but have an equal amount of lefts & rights?

Title: Re: What shape track is dirt-track?
Post by: Curly3 on April 03, 2013, 06:51:04 pm

I like your thinking John and would love to see it happen, for DT's future.
Apart from being flat you need at least one right hander, if you have room a Speedway loop would be good as would a Longtrack.
Good luck with it mate I hope it works out for you.

Title: Re: What shape track is dirt-track?
Post by: oldyzman on April 03, 2013, 07:00:46 pm

Hey John,
The DT at canberra also goes up a bit of a hill and the corners seem a little bit banked to me. Awesome fun.
We all had better start saving old sump oil for john! That should get him in good stead with the local greenies.
Brett

Title: Re: What shape track is dirt-track?
Post by: JAP 454 on April 03, 2013, 07:23:20 pm

That's the one , Steve,
John, IMO a kidney with a loop around the outside for longtrack and shorter Speedway/ Short Track cut-off would be the go.
Foss

Title: Re: What shape track is dirt-track?
Post by: Curly3 on April 03, 2013, 07:23:54 pm

Good point Brett, it don't matter if it's up or down hill or banked, just no jumps, thats what I meant by flat.
If you build it, they WILL come.

Title: Re: What shape track is dirt-track?
Post by: steve234 on April 04, 2013, 09:42:57 am

Here is a good example of an undulating terrain track.

http://ozdirttrack.ning.com/video/medina-tt-expert-main-2012

Title: Re: What shape track is dirt-track?
Post by: John Orchard on April 04, 2013, 10:22:44 am

That looked like a fun track  :-)  It gives me some idea's, thanks.

Title: Re: What shape track is dirt-track?
Post by: Andrew L on April 04, 2013, 10:44:46 am

Poor rev-limiters get a good work out on those things looks like allot of fun

Title: Re: What shape track is dirt-track?
Post by: firko on April 04, 2013, 11:01:39 am

This is a Google view of our beloved Nepean track. The start chute is bottom left and it goes anti-clockwise.
                                                               (http://i1112.photobucket.com/albums/k495/firko2/NepeanDirtTrackNSW_zps67e2f183.jpg)

The Pines, Griffith, NSW:
                                                               (http://i1112.photobucket.com/albums/k495/firko2/GriffithDirtTrackNSW_zpsf14bc393.jpg)

Kempsey, NSW:
                                                               (http://i1112.photobucket.com/albums/k495/firko2/KempseyDirtTrackNSW_zps7206b23d.jpg)

Temora, the host of this years Nats:
                                                              (http://i1112.photobucket.com/albums/k495/firko2/temora_zpsbf9a273e.jpg)

Maryborough, Qld:
                                                             (http://i1112.photobucket.com/albums/k495/firko2/MaryboroughDirtTrackQLD_zps4e3b703c.jpg)

Title: Re: What shape track is dirt-track?
Post by: John Orchard on April 04, 2013, 11:22:57 am

Thanks Mark, so for traditional dirt-track, would they use the lomg track around the outside with the left, right, left at the end of the start straight?

Title: Re: What shape track is dirt-track?
Post by: firko on April 04, 2013, 11:30:44 am

Quote

Thanks Mark, so for traditional dirt-track, would they use the lomg track around the outside with the left, right, left at the end of the start straight?

Start....turn left into esses......turn left onto long straight....turn left through sweeper and that's one lap out of the way ;). The full long track is no longer used as can be seen by the slight grass overgrowth. It was discontinued as the shape proved to be wrong causing problems with the exit onto the straight plus the speed factor rode appreciably raising safety concerns. Apparently there are moves to redesign the corner and use the full long track for flat track and long track speedway.

Title: Re: What shape track is dirt-track?
Post by: firko on April 04, 2013, 11:43:14 am

  Coffs Harbour, NSW:                                      
                                                         (http://i1112.photobucket.com/albums/k495/firko2/CoffsHarbourNSW_zpsb9ed4993.jpg)

Hunter Track, Somersby, NSW:
                                                         (http://i1112.photobucket.com/albums/k495/firko2/HunterTrackSomersby_zpsb57b159a.jpg)

Tamworth, NSW:
                                                          (http://i1112.photobucket.com/albums/k495/firko2/TamworthNSW_zpse58354c8.jpg)

Broadford, Victoria:
                                                          (http://i1112.photobucket.com/albums/k495/firko2/BroadfordSpeedwayDirttrack_zps123cc533.jpg)

Title: Re: What shape track is dirt-track?
Post by: John Orchard on April 04, 2013, 12:17:09 pm

Ooh I like the Hunter track

Title: Re: What shape track is dirt-track?
Post by: Noel on April 04, 2013, 05:38:14 pm

Quick edit on hunter track  is at Barley Ranch Raymond terace

Noel

Title: Re: What shape track is dirt-track?
Post by: Tim754 on April 04, 2013, 07:17:09 pm

 Railway ballast surfaces,  ,right angle corners and figure eights not recommend John ;)