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Clubroom => Tech Talk => Topic started by: vmxrider on August 05, 2011, 07:40:03 pm

Title: Reversing dirt track tyres
Post by: vmxrider on August 05, 2011, 07:40:03 pm
Got a Vee Rubber trials tyre used for dirt track. Tyre has a directional arrow, but probably has only one meeting left on the left side. Right side of tyre almost new. Despite the arrow I intend to reverse the tyre to use up the right side. Shouldn't be a problem....should it?   
Title: Re: Reversing dirt track tyres
Post by: matcho mick on August 05, 2011, 10:30:41 pm
you will be the 1st to know ;D,fwiw my fronts soft in one direction,reversed it's a intermediate compound,like the front of the knobs soft,the back face is harder??,wtf,amazing??,teknolgee at work, :P
Title: Re: Reversing dirt track tyres
Post by: pancho on August 06, 2011, 09:20:09 am
 Trouble is, I decided to do that with my old elsta.
 On removing the wheel I noticed the inner side of a lower suspension  mount was cracked,so I removed the swinging arm to facilitate welding[ down hand only for me] when I found that the swing arm bushes were totally stuffed.
 Then I noticed that the reaar 'guard was falling apart.
 Maybe I should have left the tyre  alone!
 Haven't tried it yet, maybe its worse!
 cheers pancho.
Title: Re: Reversing dirt track tyres
Post by: jimg1au on August 06, 2011, 09:34:36 am
i run mitchys the other way on my cz and yz125 i think its good
Title: Re: Reversing dirt track tyres
Post by: vmxrider on August 06, 2011, 12:05:09 pm
i run mitchys the other way on my cz and yz125 i think its good
Hope thats not the reason you're nursing some broken ribs atm ???
Title: Re: Reversing dirt track tyres
Post by: jimg1au on August 06, 2011, 05:09:39 pm
no that bike has a new v rubber,i ran into the back off johns bully and bike flipped and through me on the ground
Title: Re: Reversing dirt track tyres
Post by: Curly3 on August 06, 2011, 06:21:29 pm
Go for it I reckon.
Title: Re: Reversing dirt track tyres
Post by: steve7406 on August 06, 2011, 07:42:20 pm
No problems reversing the tyres i do it all the time
Title: Re: Reversing dirt track tyres
Post by: JAP 454 on August 06, 2011, 07:59:25 pm
Yep, turning the tyre after each meeting was part of my race prep, Barum or Pirelli or Mitchy, go for it
Foss
Title: Re: Reversing dirt track tyres
Post by: Curly3 on August 06, 2011, 08:09:21 pm
"OR" get the stanley knife out & cut a new edge.
Most won't know what I'm talking about but way back when, you'd actually cut a new edge, everyone had their own special technique, before turning the tyre around.
Then you could get a twin sided hub and could easily get a new edge for the final.
I am talking Speedway.
Title: Re: Reversing dirt track tyres
Post by: vmxrider on August 06, 2011, 08:11:47 pm
Yep reversing looks like a goer. Directional arrow must be more applicable for trials or possibly something to do with DOT approval.

Nasty way to come off Jimg, the surface at Nepean, whilst great for its purpose is very unforgiving if you come off in a high side type crash, doesn't absorb much of the impact. Those slider blokes have some guts I reckon.  
Title: Re: Reversing dirt track tyres
Post by: JAP 454 on August 06, 2011, 08:32:06 pm
Hey Slides
Yeah cutting tyres was , or should that be is, a bit of a black art , everyone had their own technique and method, saw Springer at Canberra, cutting new edges on his XR's rear with a single edged razor blade and Clarry Jones' pit crew at Bendigo with specially ground and sharpened blades in a hacksaw , they were busy all night.
Cut the K70 rear on TD's Astro, at Griffith in the '70s, after him complaining of it spinning up at the start, kept the front up all the way to Turn one afterwards, he couldn't believe the difference.
Foss
 
Title: Re: Reversing dirt track tyres
Post by: Curly3 on August 06, 2011, 08:42:22 pm
Without sounding like a dinosour, I can't work out why it still doesn't happen.
We're in the throw away era.
I should add that cutting a K70 is news to me.
Title: Re: Reversing dirt track tyres
Post by: JAP 454 on August 06, 2011, 08:47:05 pm
TD's K70 was bloody near bald , the cheapskate, cutting edges on  it worked but hard work with a pocket knife !!
Title: Re: Reversing dirt track tyres
Post by: Curly3 on August 06, 2011, 08:58:44 pm
Foss, Steve Constable ( Jawa76 ) mentioned last weekend how he tried a K70 on the old Nepean Speedway track and couldn't keep the front wheel down out of the tapes.
The track is very different now.
Because of the GFC and the looming carbon tax, tyres are just going to get dearer so we should be encouraging people cutting a new edge on their tyres.
Please forward all your carbon reward points to me.
Title: Re: Reversing dirt track tyres
Post by: Taka 100 on August 13, 2011, 01:33:14 am
shove a modified thick stanley blade into a soldering iron works wonders and if you want to cut grooves shape metal into U or V shape and connect to iron ,

in reguard to reversing dirt track tyres i once went riding with a guy , we stopped for a smoke and a can of coke and when we started up again we went to ride off and he rode backwards into a creek, those tyres might work well on the bully, i broke a lever bent the bars falling off my bike pissin myself laughing