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cuzo
Big Bore, Stroked & Bling +
Joined: 25 Jun 2006
Posts: 417
Location: In the Ridge
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 Posted: Wed Mar 17, 2010 7:53 pm Post subject: psi |
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I have Digital one works fine, its 4x4 gauge 0-100psi
but wth low pressure I bought a twin cylinder foot pump, and the gauge is incremented from 2 - 10 and up usauly only takes a few foot pumps to bring them to the right pressure,
I use the digital one to check the pressure when seeting the tyres when I'm changing them.
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04 Polaris Predator 500 with mods
ProArmor - Revolution nerfs |
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lak100
50cc nipper
Joined: 18 Mar 2010
Posts: 1
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| Posted: Thu Mar 18, 2010 3:16 am Post subject: |
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| hi im new here, one hypothetical question is there gonna be a problem if one front tire has 5 psi and the other 4? |
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Earthmover
Big Bore, Stroked & Bling +
Joined: 16 Apr 2009
Posts: 351
Location: Ayr, North Queensland
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| Posted: Thu Mar 18, 2010 9:30 am Post subject: |
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| lak100 wrote: | | hi im new here, one hypothetical question is there gonna be a problem if one front tire has 5 psi and the other 4? |
It will be noticeably different in the way it handles and in the stance of the bike. I'd say more so if thay were 29"s Just a guess 
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If its got wheels I'll drive it!
http://www.youtube.com/user/MrEarthmover |
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phrozin
Blaster class
Joined: 15 Jan 2008
Posts: 111
Location: earth
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| Posted: Thu Mar 18, 2010 6:36 pm Post subject: |
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| i use a longacer from rpm racing here in adelaide it cost $90 but its spot on the money from 0 to 15lbs morosso make a good 1 for drag racing its about the same price any decent hot parts shop would sell a decent 1 a must for drag racers the yam 1 aint even close |
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shan660
Big Bore, Stroked & Bling +
Joined: 09 Jun 2008
Posts: 345
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| Posted: Sun Mar 21, 2010 9:33 pm Post subject: |
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| Prokiwi wrote: | Shaun660 , With your Rzr Maxxis on the rear , run them at no less than 4 and no more than 6psi . Those Rzrs tyres are brilliant when the tread pattern is flat on the bottom under load. What tends to happen with them specificially is that if you dont have enough air in them the centre of the tread pattern dips under load and only the inside and outside edge of the tyre is actually touching the ground. I picked this up while dynoing mine one day and noticed the tyres flexxed in the middle of the tread .
Essentially you want the whole tyre to be working when under load. Maxxis are great tyres and will get you out of most situations. ( I proved this one day when i was on a big trail ride in NZ and I was the only bike to climb out of a big gully while it was pouring down with rain). All the rest had to be helicoptored out. I have never forgotten it.
7psi on the front will allow the front to dig in and help the turn instead of pushing / or sledging as it is known. |
buddy you definately know what you are talking about, it soaks the bumps up soo much and steers a lot better, thanks buddy |
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Prokiwi
Roostin Away
Joined: 05 Nov 2006
Posts: 548
Location: Mount Cotton, Brisbane
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| Posted: Mon Mar 22, 2010 7:39 am Post subject: |
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No worries Shan , I've been riding quads longer than I care to remember . I learnt racing sprint cars etc many yrs ago that tyre pressure is everything ...horsepower is easy to get , correct tyre pressures takes practise but is worth the excercise.
Do the same with your front shocks ...set them to the hardest setting and go for a ride on a gravel road with some nice corners...watch how nicely the bike corners and the rear slides around. Then change shock settings to soft and do the same excercise ...notice how difficult it is to get around the corner this time ????? Now set them somewhere in between depending on your riding style.
A well set up pair of shocks and good tyre pressure makes the ride so much better its incredible.
Just some useless info 
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It's time too ride !!!!!!! |
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phrozin
Blaster class
Joined: 15 Jan 2008
Posts: 111
Location: earth
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| Posted: Mon Mar 22, 2010 12:31 pm Post subject: |
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some of you guys are forgeting that the side walls are as important as the tread to hooking up a tyre on the dirt to much air pressure and you cancil out that
prokiwi if you have run sprint cars you should know that hey  |
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hustleratv.com.au
The Day Starts With OZATV !
Joined: 26 Jan 2007
Posts: 1022
Location: Adelaide
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| Posted: Thu Apr 08, 2010 11:19 am Post subject: |
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I have longacre tyre pressure gauge new for $65 0 to 15 psi
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hustleratv.com.au 0407 797 780
Importer of OMF performance product / wheels
Maxxis Tyres
Boundless Suspention
Bad Boy Power Drinks |
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bigjon
Moderator
Joined: 17 Feb 2006
Posts: 1279
Location: Dubbo
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| Posted: Thu Apr 08, 2010 9:23 pm Post subject: |
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| hustleratvracing wrote: | | I have longacre tyre pressure gauge new for $65 0 to 15 psi |
Which gauge is it as they have heaps? Deluxe, Liquid filled, Magnum, etc.....
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Don't close your eyes during the crash, you'll miss the best part |
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hustleratv.com.au
The Day Starts With OZATV !
Joined: 26 Jan 2007
Posts: 1022
Location: Adelaide
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| Posted: Thu Apr 08, 2010 9:33 pm Post subject: |
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Its the Standard Tire Gauge type. not Deluxe, Liquid filled, Magnum.
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hustleratv.com.au 0407 797 780
Importer of OMF performance product / wheels
Maxxis Tyres
Boundless Suspention
Bad Boy Power Drinks |
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Dazz
Roostin Away
Joined: 12 Dec 2008
Posts: 586
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| Posted: Fri Apr 09, 2010 5:20 pm Post subject: |
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| how do we buy one? |
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hustleratv.com.au
The Day Starts With OZATV !
Joined: 26 Jan 2007
Posts: 1022
Location: Adelaide
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| Posted: Sat Apr 10, 2010 9:13 am Post subject: |
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send me a pm
_________________
hustleratv.com.au 0407 797 780
Importer of OMF performance product / wheels
Maxxis Tyres
Boundless Suspention
Bad Boy Power Drinks |
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ATV PRO
Roostin Away
Joined: 13 Feb 2006
Posts: 888
Location: Central Coast, NSW
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| Posted: Wed Apr 14, 2010 8:47 pm Post subject: |
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What size are the tyres ?
What is the terrain,Sand,Mud...?
What Brand ?
Radials?
Standard shocks or Aftermarket ?
How much do you weigh ?
Stock or Race?
Enduro,Trails,MX
All have a big impact on what pressure you run.
Basically you want to eliminate tyre roll in corners ,flattening off jumps and excessive bounce.
Stock Quad OEM Dunlop Radials,22" fronts with 20" rears with a 100kg rider on good traction loam/sand Trails probably around 6 lbs front and 5 lbs rear. Because stock suspension is limited ,the tyres being radial with lower pressures make for a smoother Ride.
Full blown Race Quad with say Quad cross soft rubber compound 20"Fronts and 8" Rears MX ,Big Jumps ,hard pack blue line 100 kg Pro Racer
Front 14-16 lbs.
Rear 10-13 lbs.
You have good suspension with steering damper so tyres are better harder to stop tyre Roll,bounce and dented rims. Traction is obtained via compound / tread choices and adjustment of Steering geometry rather than compromising Tyre Pressures.
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Cheers
Len
ATV PRO Pty Ltd |
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dangerman4
Roostin Away
Joined: 31 Mar 2007
Posts: 854
Location: Morphett Vale
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| Posted: Wed Apr 14, 2010 9:07 pm Post subject: |
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l10 - 13 psi
sounds excessive.... |
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ATV PRO
Roostin Away
Joined: 13 Feb 2006
Posts: 888
Location: Central Coast, NSW
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| Posted: Wed Apr 14, 2010 9:22 pm Post subject: |
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| dangerman4 wrote: | l10 - 13 psi
sounds excessive.... |
Its what we run on the KTM Factory Team last year,this year and the same when we were with Honda.
Top US pros also run high pressures
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Cheers
Len
ATV PRO Pty Ltd |
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BARN-6
Roostin Away
Joined: 12 May 2006
Posts: 684
Location: Upside down in the tyre wall
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| Posted: Thu Apr 15, 2010 9:42 am Post subject: |
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| i run 10psi front ,8 rear for moto cross |
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