Planet Minis

kawasakicoby125 · 07-02-2009, 10:35 PM

ya, deffenatly race bike framesets. i will defenatly look into the non metal route for some chasis parts.

trackstar · 07-02-2009, 10:38 PM

Carbon is a good frame material for some uses. MotoGP bikes have been experimenting with CF frames for some time. 230 HP and 380 lbs. The frame is a stressed member as well as a heat sink in GP bikes so neither strength nor heat is an issue with the material.

The problem we have in roadracing is that some flex, in certain areas of the frame are desirable for good handling. CF and aluminum combinations seem to be the answer.

kawasakicoby125 · 07-02-2009, 10:40 PM

yes. i was thinking about aluminum inner parts, with the carbon over top. and then an all aluminum subframe.

trackstar · 07-02-2009, 10:44 PM

No, that doesnt get the job done. You make some parts from aluminum, some from carbon and mate them modular.

This bike has a full carbon frame/swingarm. Ya, those are carbon fiber brake rotors as well. Carbon takes heat really well.

Ducati Desmosedici GP9 MotoGP Race bike

kawasakicoby125 · 07-02-2009, 10:49 PM

when i say aluminum inner parts i mean like for the motor parts. haha. then a full carbon fiber frame, with aluminum subframe.

cyclerider57 · 07-03-2009, 02:06 PM

Just for reference. The rotors of a motogp bike are a carbon-carbon composite and not a directional carbon fibre composite like you are used to seeing and can buy everywhere. They are a different form of carbon composite all together. And in the case of motogp rotors, are created specifically to run in extremely high temperatures ("cold carbon rotors wouldn't stop a shopping cart" and common carbon fibre rotors wouldn't make it one lap in motogp).

Keep in mind when working with carbon fibre that if you bond it to a metal in high stress areas, head tube, axle areas, etc., you need some form of insulator. Carbon fibre and metal do not work well directly bonded as your metal will start to erode due to the carbon atoms "attacking" the metal.

miniaddict987 · 07-03-2009, 03:00 PM

ive had ssrs, xtremes and a klx 110
my ssrs were constantly having problems, and the suspension was like a pogo stick
xtremes are more expensive but i bought it and built a klx and had more problems with the klx than the xtreme!
china bikes arent all bad, just depends what u get

07-02-2009, 10:35 PM	#61 (permalink)
kawasakicoby125 3rd Gear Member Join Date: Jul 2008 Location: Lynnwood, WA Posts: 2,356 My Mood:	Re: the biggest flaws in import bikes... ya, deffenatly race bike framesets. i will defenatly look into the non metal route for some chasis parts.

07-02-2009, 10:38 PM	#62 (permalink)
trackstar 2nd Gear Member Join Date: Jun 2009 Location: Roy Utah Posts: 372 My Mood:	Re: the biggest flaws in import bikes... Carbon is a good frame material for some uses. MotoGP bikes have been experimenting with CF frames for some time. 230 HP and 380 lbs. The frame is a stressed member as well as a heat sink in GP bikes so neither strength nor heat is an issue with the material. The problem we have in roadracing is that some flex, in certain areas of the frame are desirable for good handling. CF and aluminum combinations seem to be the answer.

07-02-2009, 10:40 PM	#63 (permalink)
kawasakicoby125 3rd Gear Member Join Date: Jul 2008 Location: Lynnwood, WA Posts: 2,356 My Mood:	Re: the biggest flaws in import bikes... yes. i was thinking about aluminum inner parts, with the carbon over top. and then an all aluminum subframe.

07-02-2009, 10:44 PM	#64 (permalink)
trackstar 2nd Gear Member Join Date: Jun 2009 Location: Roy Utah Posts: 372 My Mood:	Re: the biggest flaws in import bikes... No, that doesnt get the job done. You make some parts from aluminum, some from carbon and mate them modular. This bike has a full carbon frame/swingarm. Ya, those are carbon fiber brake rotors as well. Carbon takes heat really well. Ducati Desmosedici GP9 MotoGP Race bike

07-02-2009, 10:49 PM	#65 (permalink)
kawasakicoby125 3rd Gear Member Join Date: Jul 2008 Location: Lynnwood, WA Posts: 2,356 My Mood:	Re: the biggest flaws in import bikes... when i say aluminum inner parts i mean like for the motor parts. haha. then a full carbon fiber frame, with aluminum subframe.

07-03-2009, 02:06 PM	#66 (permalink)
cyclerider57 Got Un-disappeared Join Date: Nov 2003 Location: Kansas Posts: 4,321 My Mood:	Re: the biggest flaws in import bikes... Just for reference. The rotors of a motogp bike are a carbon-carbon composite and not a directional carbon fibre composite like you are used to seeing and can buy everywhere. They are a different form of carbon composite all together. And in the case of motogp rotors, are created specifically to run in extremely high temperatures ("cold carbon rotors wouldn't stop a shopping cart" and common carbon fibre rotors wouldn't make it one lap in motogp). Keep in mind when working with carbon fibre that if you bond it to a metal in high stress areas, head tube, axle areas, etc., you need some form of insulator. Carbon fibre and metal do not work well directly bonded as your metal will start to erode due to the carbon atoms "attacking" the metal. __________________ The wise understand by themselves; fools follow the reports of others. Goodness speaks in a whisper, evil shouts. -Tibetan Proverb Last edited by cyclerider57; 07-03-2009 at 02:57 PM.

07-03-2009, 03:00 PM	#67 (permalink)
miniaddict987 PM Newbie Join Date: Jul 2009 Posts: 18	Re: the biggest flaws in import bikes... ive had ssrs, xtremes and a klx 110 my ssrs were constantly having problems, and the suspension was like a pogo stick xtremes are more expensive but i bought it and built a klx and had more problems with the klx than the xtreme! china bikes arent all bad, just depends what u get

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