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Scooters - 50cc => Agility 50 => Topic started by: Dark13 on April 28, 2010, 01:12:25 AM

Title: 8 psi........just wow
Post by: Dark13 on April 28, 2010, 01:12:25 AM
i checked my tire pressure today and it was 8 psi below the recommended pressure so i added some air and gained 3 km/h  :o
Title: Re: 8 psi........just wow
Post by: zombie on April 28, 2010, 01:57:29 AM
Note to self: Put in more air...
Title: Re: 8 psi........just wow
Post by: wordslinger on April 28, 2010, 10:41:42 AM
...i have personal experience in that department from back in th' day....
Title: Re: 8 psi........just wow
Post by: Dark13 on April 28, 2010, 11:48:15 AM
i really cant believe that such a little thing can affect speed
Title: Re: 8 psi........just wow
Post by: wordslinger on April 28, 2010, 11:55:26 AM
...oh, but yeah...these scoots are sensitive to tire pressure....

Title: Re: 8 psi........just wow
Post by: sidthesloth on April 28, 2010, 12:07:14 PM
One way to put it into perspective, if you get a wheelbarrow and pump the tyre up to 15psi and load it with dirt and try to push it and then pump the tyre up to 30psi the difference is amazing, and so it is with your scooter, easier running, a little more speed and better economy.
Title: Re: 8 psi........just wow
Post by: axy on April 28, 2010, 12:13:58 PM
A guy was killed yesterday while repairing truck and pumping the air ...
It blew up at 8.5 bar, while the pressure should be 9 bar... so he did not overdo it.

http://www.jutarnji.hr/zagreb--ubila-ga-guma-koju-je-napumpao-i-montirao/741645/ (http://www.jutarnji.hr/zagreb--ubila-ga-guma-koju-je-napumpao-i-montirao/741645/)

The newspapers say that such a case is unheard of (at least here).
Title: Re: 8 psi........just wow
Post by: zombie on April 28, 2010, 05:03:23 PM
Sorry for his family! Tires are time bombs.
Title: Re: 8 psi........just wow
Post by: wordslinger on April 28, 2010, 06:10:24 PM
A guy was killed yesterday while repairing truck and pumping the air ...
It blew up at 8.5 bar, while the pressure should be 9 bar... so he did not overdo it.

http://www.jutarnji.hr/zagreb--ubila-ga-guma-koju-je-napumpao-i-montirao/741645/ (http://www.jutarnji.hr/zagreb--ubila-ga-guma-koju-je-napumpao-i-montirao/741645/)

The newspapers say that such a case is unheard of (at least here).

..dang...that's too bad...

..y' just never know, huh................
Title: Re: 8 psi........just wow
Post by: Shaka on April 29, 2010, 12:19:15 AM
I was parked next to a woman at a gas station last summer who was filling the front tire on her care when it EXPLODED!!!!  It was pretty crazy how much force was behind it!!! :o   Luckily she was ok, just quite stunned, as was I!!!!
Title: Re: 8 psi........just wow
Post by: Calothrix on April 29, 2010, 02:52:58 AM
One way to put it into perspective, if you get a wheelbarrow and pump the tyre up to 15psi and load it with dirt and try to push it and then pump the tyre up to 30psi the difference is amazing, and so it is with your scooter, easier running, a little more speed and better economy.

Yeah, same thing with a bicycle.  A lot easier to propel when the tires are pumped up hard versus when they are low on air.
Title: Re: 8 psi........just wow
Post by: mrmoose35 on April 29, 2010, 09:06:48 PM
there is a mark on the tire of how much pressure it can take at max,,1.9bar front 2.2bar rear is maximun,on my city,, i think 9bar is way to much,,the pressure gets higer when its get warmer outside and by riding the bike the tire gets a lot warmer,,and the origanal scooter tires are mostly of poor quality and are some times dangerus to use,,,cst is ok,,but il will change the tire to pirelli or continental..to ride safe when its wet outside.
Title: Re: 8 psi........just wow
Post by: zombie on April 30, 2010, 01:39:34 AM
The sidewall rating does take into account the heat from riding, and the ambient temp. There are lots of posts about pressure. I like a soft tire over inflated vs a hard tire under inflated.