CarbonFiber/Titanium Race Frame???
With a title like that i don't think anyone would pass up reading this one.
Like most of you i like to better things, like my bike. Nothing is ever good enough! More power, Better suspension etc. The most common thing we all pass up is frame geometry and stiffness. Its no wonder why, I mean how many of us are engineers with wire graphing software and a test facility? What about frame materials? What i cant figure out is why all of the manufacturers are still using Aluminum. But what other options do we have? we have other metals like Ti, ChromiunMolibdenium AKA "chrome-molly", Magnesium etc. We would all think that Ti would make a better frame then aluminum but is not the case. Ti Flexes far too much on its own, in fact aluminum being about 1/2 as strong as titanium (i think) its much stiffer. I mean they could just go with carbon fiber but by it self it would fall apart where the swing arm connects as well as the fork and other bolts.
Im not in to riding bicycles but i was surfing the net tonight and i found a frame builder that sells frames for about $6000 to $7500. i cant remember what its called but if enough people want to know ill try and look it up. its a system where thin Ti is used as the core, wrapped with carbon fiber to make a SUPER RIDGED, SUPER LIGHT, SUPER FRAME. could you imagine if the technology was used in motorcycle's frames and swing arms? i think most people out there who are spending 11K on a bike wouldn't mind spending another 1500 or 2K to have there frame made of this stuff. I think they could do it and still be able to keep the prices down will it ever happen?
Like most of you i like to better things, like my bike. Nothing is ever good enough! More power, Better suspension etc. The most common thing we all pass up is frame geometry and stiffness. Its no wonder why, I mean how many of us are engineers with wire graphing software and a test facility? What about frame materials? What i cant figure out is why all of the manufacturers are still using Aluminum. But what other options do we have? we have other metals like Ti, ChromiunMolibdenium AKA "chrome-molly", Magnesium etc. We would all think that Ti would make a better frame then aluminum but is not the case. Ti Flexes far too much on its own, in fact aluminum being about 1/2 as strong as titanium (i think) its much stiffer. I mean they could just go with carbon fiber but by it self it would fall apart where the swing arm connects as well as the fork and other bolts.
Im not in to riding bicycles but i was surfing the net tonight and i found a frame builder that sells frames for about $6000 to $7500. i cant remember what its called but if enough people want to know ill try and look it up. its a system where thin Ti is used as the core, wrapped with carbon fiber to make a SUPER RIDGED, SUPER LIGHT, SUPER FRAME. could you imagine if the technology was used in motorcycle's frames and swing arms? i think most people out there who are spending 11K on a bike wouldn't mind spending another 1500 or 2K to have there frame made of this stuff. I think they could do it and still be able to keep the prices down will it ever happen?
What the hell would we need a CF/Ti frame for? There's more flex on the swingarm than on the frame. It won't make a difference big enough to matter. Plus, unless you're racing competitively and every millisecond counts... you're probably not gonna need it.
Why not spend those thousands on Race School? That'll probably make a bigger difference in performance than a space age frame.
Why not spend those thousands on Race School? That'll probably make a bigger difference in performance than a space age frame.
I highly doubt you can get a frame like that for $2k over the price of a new bike. CF wheels already go for $3500 a set. If it was as cheap as you think, wouldnt you think everyone would have it? The bike is only as fast as you are. If you can pull some times at the track similar to the ama guys, then go for the frame.
I recently read an article about why the MotoGP guys don't use carbon fiber frames yet. There was a bunch of negatives and resons why they havn't been able to work the kinks out of it yet. I'll try and dig the article up later today.
the bicycle mfg you are thinking about is Moots i belive, they make full ti custom bikes and are about 5-9 grand a frame. hand built to your height weight, you name it, even your shoe size.
Ti is not economical, at least for daily use. I race downhill mountain bikes , work at a shop and have broken many many alum. frames. I am currently on a beast of a cro-mo frame... ti is light as ****, but can't take the abuse alum. and cro-mo can.
if you are getting paid to ride, you ride that 999s ducati, or something of that calibor.
the race bike pros are riding would retail for 30k if we tried to buy them privatly or build them up.
I really don't think you will ever see a carbon or Ti honda. and if you do, you sure as hell won't see as many 16-21 year olds riding them.
my 2c - comparing to the bicycle world
Ti is not economical, at least for daily use. I race downhill mountain bikes , work at a shop and have broken many many alum. frames. I am currently on a beast of a cro-mo frame... ti is light as ****, but can't take the abuse alum. and cro-mo can.
if you are getting paid to ride, you ride that 999s ducati, or something of that calibor.
the race bike pros are riding would retail for 30k if we tried to buy them privatly or build them up.
I really don't think you will ever see a carbon or Ti honda. and if you do, you sure as hell won't see as many 16-21 year olds riding them.
my 2c - comparing to the bicycle world
ok what im getting at is that Carbon Fiber is CHEEP!!! no seriously, its cheep to make that's why i cant figure out why its so expensive. i use to make dash trim (and some other smaller stuff) at a friends shop. My friend was making Kayaks out of the stuff, using 6.5oz carbon 2 ply sandwich. im talking 16 foot long stuff. they sold for about $850 each. when you consider that about 8 hours of work go into each one that's pretty damn cheep. To tell you the truth, as far as man hours go i think you could do a frame in under 2 hours, not including the over night wait and the Ti machining. I really don't think it would be that much. but anyway even if right now it is, how long do you think it will be before it becomes available to the masses???
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<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hks85 »</TD></TR><TR><TD CLASS="quote">ok what im getting at is that Carbon Fiber is CHEEP!!! no seriously, its cheep to make that's why i cant figure out why its so expensive. i use to make dash trim (and some other smaller stuff) at a friends shop. My friend was making Kayaks out of the stuff, using 6.5oz carbon 2 ply sandwich. im talking 16 foot long stuff. they sold for about $850 each. when you consider that about 8 hours of work go into each one that's pretty damn cheep. To tell you the truth, as far as man hours go i think you could do a frame in under 2 hours, not including the over night wait and the Ti machining. I really don't think it would be that much. but anyway even if right now it is, how long do you think it will be before it becomes available to the masses???</TD></TR></TABLE>Its cheap if some guys like you made them. Make some CF rims and see how long they last. I can see myself buying some quality CF rims. But a frame? This would have to be a track/race only bike. Cant be a street bike. Just not worth it.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ProjectF4 »</TD></TR><TR><TD CLASS="quote">the race bike pros are riding would retail for 30k if we tried to buy them privatly or build them up. </TD></TR></TABLE>999R Costs about 30k stock/factory
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ProjectF4 »</TD></TR><TR><TD CLASS="quote">the race bike pros are riding would retail for 30k if we tried to buy them privatly or build them up. </TD></TR></TABLE>999R Costs about 30k stock/factory
************!
I just spent a half an hour writing a badass summary of the article form the Roadracing World March issue about carbon-fiber in MotoGP and ie crashed.
**** you bill gates!
So here is my new summary:
1) It's expensive
2) The bikes already meet the minimum weight
3) It's too stiff and hurts the handling of the bike
Since the stiffness of it can be tuned one it it will be used in frames and swingarms. The issue mentions that CarboTech has a frame for the Ducati 916 and Ohlins was working on a swingarm.
If you want any more info on it just ask or buy the damn mag yourself.
<---Pissed off
I just spent a half an hour writing a badass summary of the article form the Roadracing World March issue about carbon-fiber in MotoGP and ie crashed.
**** you bill gates!
So here is my new summary:
1) It's expensive
2) The bikes already meet the minimum weight
3) It's too stiff and hurts the handling of the bike
Since the stiffness of it can be tuned one it it will be used in frames and swingarms. The issue mentions that CarboTech has a frame for the Ducati 916 and Ohlins was working on a swingarm.
If you want any more info on it just ask or buy the damn mag yourself.
<---Pissed off
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RebornGSR »</TD></TR><TR><TD CLASS="quote">************!
I just spent a half an hour writing a badass summary of the article form the Roadracing World March issue about carbon-fiber in MotoGP and ie crashed.
**** you bill gates!
So here is my new summary:
1) It's expensive
2) The bikes already meet the minimum weight
3) It's too stiff and hurts the handling of the bike
Since the stiffness of it can be tuned one it it will be used in frames and swingarms. The issue mentions that CarboTech has a frame for the Ducati 916 and Ohlins was working on a swingarm.
If you want any more info on it just ask or buy the damn mag yourself.
<---Pissed off
</TD></TR></TABLE>
Hate it when that happens... now I write in Notepad/Word prog (autosave) and copy paste when I know I'll be writing an 'essay'.
:middlefinger: Microsoft
But what do I care... you didn't like my bitches!
I just spent a half an hour writing a badass summary of the article form the Roadracing World March issue about carbon-fiber in MotoGP and ie crashed.
**** you bill gates!
So here is my new summary:
1) It's expensive
2) The bikes already meet the minimum weight
3) It's too stiff and hurts the handling of the bike
Since the stiffness of it can be tuned one it it will be used in frames and swingarms. The issue mentions that CarboTech has a frame for the Ducati 916 and Ohlins was working on a swingarm.
If you want any more info on it just ask or buy the damn mag yourself.
<---Pissed off
</TD></TR></TABLE>Hate it when that happens... now I write in Notepad/Word prog (autosave) and copy paste when I know I'll be writing an 'essay'.
:middlefinger: Microsoft
But what do I care... you didn't like my bitches!
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hks85 »</TD></TR><TR><TD CLASS="quote"> The most common thing we all pass up is frame geometry and stiffness. Its no wonder why, I mean how many of us are engineers with wire graphing software and a test facility? What about frame materials? What i cant figure out is why all of the manufacturers are still using Aluminum.
</TD></TR></TABLE>
Me, me, me...The manufacturers for road bikes still use alloy as it is easily the cheapest and safest material available.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">
But what other options do we have? we have other metals like Ti, ChromiunMolibdenium AKA "chrome-molly", Magnesium etc. We would all think that Ti would make a better frame then aluminum but is not the case. Ti Flexes far too much on its own, in fact aluminum being about 1/2 as strong as titanium (i think) its much stiffer.
</TD></TR></TABLE>
There is aluminium and aluminium, see here ... http://www.aircraftmaterialsuk...TIONS
Its like when people say a Nike bag is made of plastic, they are half right, its actually LD/LLDPE, probably 2% Masterbatch and 5% ink coverage.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">
I mean they could just go with carbon fiber but by it self it would fall apart where the swing arm connects as well as the fork and other bolts.
Im not in to riding bicycles but i was surfing the net tonight and i found a frame builder that sells frames for about $6000 to $7500. i cant remember what its called but if enough people want to know ill try and look it up. its a system where thin Ti is used as the core, wrapped with carbon fiber to make a SUPER RIDGED, SUPER LIGHT, SUPER FRAME. could you imagine if the technology was used in motorcycle's frames and swing arms? i think most people out there who are spending 11K on a bike wouldn't mind spending another 1500 or 2K to have there frame made of this stuff. I think they could do it and still be able to keep the prices down will it ever happen? </TD></TR></TABLE>
The Britten m/c below has a carbon frame, but uses the enormous V1000 as a stressed member. A Carbon beam frame would be much more of a challenge.

Cagiva used Carbon on the swingarm and did develop a frame in the early 80's but it was ditched due to poor feedback. I am sure that with the almost monthly advances in vaccum forming techniques and much more maliable products a frame could be made.


Carbon on the road however is always going to be a non starter. What happens in extreme heat and cold? It is not stable enough for year in and out performance under the loads that a modern 1000cc bike could put on it. It would not be insurable as the first 'off' would require a specialist inspection. Then if replacement, well that will be $9K please!
Cliff notes: Anything is possble, depends how much money you want to invest.
</TD></TR></TABLE>
Me, me, me...The manufacturers for road bikes still use alloy as it is easily the cheapest and safest material available.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">
But what other options do we have? we have other metals like Ti, ChromiunMolibdenium AKA "chrome-molly", Magnesium etc. We would all think that Ti would make a better frame then aluminum but is not the case. Ti Flexes far too much on its own, in fact aluminum being about 1/2 as strong as titanium (i think) its much stiffer.
</TD></TR></TABLE>
There is aluminium and aluminium, see here ... http://www.aircraftmaterialsuk...TIONS
Its like when people say a Nike bag is made of plastic, they are half right, its actually LD/LLDPE, probably 2% Masterbatch and 5% ink coverage.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">
I mean they could just go with carbon fiber but by it self it would fall apart where the swing arm connects as well as the fork and other bolts.
Im not in to riding bicycles but i was surfing the net tonight and i found a frame builder that sells frames for about $6000 to $7500. i cant remember what its called but if enough people want to know ill try and look it up. its a system where thin Ti is used as the core, wrapped with carbon fiber to make a SUPER RIDGED, SUPER LIGHT, SUPER FRAME. could you imagine if the technology was used in motorcycle's frames and swing arms? i think most people out there who are spending 11K on a bike wouldn't mind spending another 1500 or 2K to have there frame made of this stuff. I think they could do it and still be able to keep the prices down will it ever happen? </TD></TR></TABLE>
The Britten m/c below has a carbon frame, but uses the enormous V1000 as a stressed member. A Carbon beam frame would be much more of a challenge.

Cagiva used Carbon on the swingarm and did develop a frame in the early 80's but it was ditched due to poor feedback. I am sure that with the almost monthly advances in vaccum forming techniques and much more maliable products a frame could be made.


Carbon on the road however is always going to be a non starter. What happens in extreme heat and cold? It is not stable enough for year in and out performance under the loads that a modern 1000cc bike could put on it. It would not be insurable as the first 'off' would require a specialist inspection. Then if replacement, well that will be $9K please!
Cliff notes: Anything is possble, depends how much money you want to invest.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RebornGSR »</TD></TR><TR><TD CLASS="quote">
3) It's too stiff and hurts the handling of the bike </TD></TR></TABLE>
Theres your answer. Titanium doesn't like to flex. Frames need some flex.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hks85 »</TD></TR><TR><TD CLASS="quote">ok what im getting at is that Carbon Fiber is CHEEP!!! no seriously, its cheep to make that's why i cant figure out why its so expensive. i use to make dash trim (and some other smaller stuff) at a friends shop. My friend was making Kayaks out of the stuff, using 6.5oz carbon 2 ply sandwich. im talking 16 foot long stuff. ?</TD></TR></TABLE>
Kayaks and dash trim are one thing, moto frames and swing arms are another. There are as many grades of carbon fiber as there are steel. You dont use the expensive stuff to make non load bearing items, you cannot use the cheap stuff for stressed parts.
3) It's too stiff and hurts the handling of the bike </TD></TR></TABLE>
Theres your answer. Titanium doesn't like to flex. Frames need some flex.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hks85 »</TD></TR><TR><TD CLASS="quote">ok what im getting at is that Carbon Fiber is CHEEP!!! no seriously, its cheep to make that's why i cant figure out why its so expensive. i use to make dash trim (and some other smaller stuff) at a friends shop. My friend was making Kayaks out of the stuff, using 6.5oz carbon 2 ply sandwich. im talking 16 foot long stuff. ?</TD></TR></TABLE>
Kayaks and dash trim are one thing, moto frames and swing arms are another. There are as many grades of carbon fiber as there are steel. You dont use the expensive stuff to make non load bearing items, you cannot use the cheap stuff for stressed parts.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mos »</TD></TR><TR><TD CLASS="quote">
Theres your answer. Titanium doesn't like to flex. Frames need some flex.
</TD></TR></TABLE>
I thought he was talking about CF?
Theres your answer. Titanium doesn't like to flex. Frames need some flex.
</TD></TR></TABLE>
I thought he was talking about CF?
Let me guess, you didnt read the thread title...
There are carbon fiber frames available, and they do have some 'give' to them. They also cost too damn much. I took a photo of carbon Ducati frame recently. I'll post it here if I find it. As prices come down, you will probably see more of these around.
There are carbon fiber frames available, and they do have some 'give' to them. They also cost too damn much. I took a photo of carbon Ducati frame recently. I'll post it here if I find it. As prices come down, you will probably see more of these around.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EKhatch »</TD></TR><TR><TD CLASS="quote">
I thought he was talking about CF? </TD></TR></TABLE>
CF flexes even less.
I thought he was talking about CF? </TD></TR></TABLE>
CF flexes even less.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mos »</TD></TR><TR><TD CLASS="quote">Let me guess, you didnt read the thread title...
There are carbon fiber frames available, and they do have some 'give' to them. They also cost too damn much. I took a photo of carbon Ducati frame recently. I'll post it here if I find it. As prices come down, you will probably see more of these around.
</TD></TR></TABLE>
They also still don't preform as well as current Aluminum frames. It's only a matter of time until they do though because of the ability to tune the properties of the CF. Just because CarboTech can make a CF frame doesn't mean it's any good.
There are carbon fiber frames available, and they do have some 'give' to them. They also cost too damn much. I took a photo of carbon Ducati frame recently. I'll post it here if I find it. As prices come down, you will probably see more of these around.
</TD></TR></TABLE>
They also still don't preform as well as current Aluminum frames. It's only a matter of time until they do though because of the ability to tune the properties of the CF. Just because CarboTech can make a CF frame doesn't mean it's any good.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mos »</TD></TR><TR><TD CLASS="quote">I took a photo of carbon Ducati frame recently. I'll post it here if I find it. </TD></TR></TABLE>
CarboTech Ducati 916 frame:
CarboTech Ducati 916 frame:
Yeah, I agree. Through the years when aluminum frames were all the rage, Ducati didn't seem to mind kicking everyone's *** with their old steel trellis frames.
The pic I took is of a European comapny's frame IIRC...
The pic I took is of a European comapny's frame IIRC...
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mos »</TD></TR><TR><TD CLASS="quote">Let me guess, you didnt read the thread title...
</TD></TR></TABLE>
Nope, I just closed my eyes and somehow ended up here. WTF?
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RebornGSR »</TD></TR><TR><TD CLASS="quote">
CF flexes even less.</TD></TR></TABLE>
Thanks, that's what I thought you were saying.
</TD></TR></TABLE>
Nope, I just closed my eyes and somehow ended up here. WTF?
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RebornGSR »</TD></TR><TR><TD CLASS="quote">
CF flexes even less.</TD></TR></TABLE>
Thanks, that's what I thought you were saying.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mos »</TD></TR><TR><TD CLASS="quote">The pic I took is of a European comapny's frame IIRC...</TD></TR></TABLE>
CarboTech is a euro company
CarboTech is a euro company
I heard that in MotoGP, they've gotten the frames really stiff and now are making them flex a little for more bump absorbtion at lean angles. So... chassis flex is used as suspension while the bike is sideways.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EKhatch »</TD></TR><TR><TD CLASS="quote">Nope, I just closed my eyes and somehow ended up here. WTF?
Thanks, that's what I thought you were saying.</TD></TR></TABLE>
I didn't read his whole post. Just read the thread title, then scrolled thru and saw the correct, concise, one line answer and figured that is was directed at the thread title... sorry about that. And you can design carbon fiber parts to flex. Not so with titanium.
Thanks, that's what I thought you were saying.</TD></TR></TABLE>
I didn't read his whole post. Just read the thread title, then scrolled thru and saw the correct, concise, one line answer and figured that is was directed at the thread title... sorry about that. And you can design carbon fiber parts to flex. Not so with titanium.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mos »</TD></TR><TR><TD CLASS="quote">
I didn't read his whole post. Just read the thread title, then scrolled thru and saw the correct, concise, one line answer and figured that is was directed at the thread title... sorry about that. And you can design carbon fiber parts to flex. Not so with titanium. </TD></TR></TABLE>
I didn't read his whole post. Just read the thread title, then scrolled thru and saw the correct, concise, one line answer and figured that is was directed at the thread title... sorry about that. And you can design carbon fiber parts to flex. Not so with titanium. </TD></TR></TABLE>
Two strikes in one thread:
http://www.vanguardtitanium.com/titanium.htm
Looks like some alloys of Titanium are not as brittle as I thought. At least not if the above site is to be believed. I'm only familiar with the exhaust market titanium, where there is repeated exposure to high heat. Thats probably what prohibits the use of the more ductile Ti alloys.
Edited: More reading if you're bored: http://www.google.com/search?h...earch
Modified by mos at 10:00 AM 12/21/2004
http://www.vanguardtitanium.com/titanium.htm
Looks like some alloys of Titanium are not as brittle as I thought. At least not if the above site is to be believed. I'm only familiar with the exhaust market titanium, where there is repeated exposure to high heat. Thats probably what prohibits the use of the more ductile Ti alloys.
Edited: More reading if you're bored: http://www.google.com/search?h...earch
Modified by mos at 10:00 AM 12/21/2004




