center pivot steering, carbon fiber
#1
Member
Thread Starter
Join Date: May 2011
Posts: 44
Bikes: univega rover sti univega rover st
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
center pivot steering, carbon fiber
Me and my hubby are working on our own velomobil design's. my question is this, where can one get a center pivot steering ( like the waw, sinner mango, etc, etc)? also has any one had any experience working with carbon fiber. My husband thinks that this would give superior strength and greatly reduced weight. he has had some experience working with fiber glass so it should not be too much of a difference(?). will there still be a need to use metal for the bb?
thank you in advance
beckie
thank you in advance
beckie
#2
Senior Member
Join Date: Feb 2012
Location: Rochester, NY
Posts: 18,063
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4197 Post(s)
Liked 3,849 Times
in
2,300 Posts
The history of using metal is far larger then that of fiber reinforced resins. You guys need to practice and do a number of mock ups then test them to understand how to work with the materials and whether they're strong enough for your designs. There are a number of detail differences between fiberglasses and carbon fibers and how to work them. Then there's the compatibility with certain metals to deal with. Andy.
#3
Randomhead
Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
Posts: 24,392
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked 3,691 Times
in
2,514 Posts
I assume the steering mechanisms are fabricated at the companies involved. i would think that building a velomobile will require some machinery.
Carbon fiber bikes do use some metal parts, the BB is a common example.
Good luck, it should be fun
Carbon fiber bikes do use some metal parts, the BB is a common example.
Good luck, it should be fun
#4
Banned
FlevoBikes were a Front wheel drive center steered 2 wheel bike ,
there is no handlebar controlling the steering ... its all lean steered ,
and since the feet are also powering the front wheel , real tricky to master.
https://flevofan.ligfiets.net/?doc=ch4-01 1wheel driving from the front, 2 in back
might have velomobile applications in a 3 wheel type ,
100 years ago they figured out the 2 steering wheels need to turn at a different angle ,
not stay parallel, ala Christiania cargo trikes.
as far as Carbon fiber building look up Vacuum Bagging https://www.google.com/search?q=Vacu...hrome&ie=UTF-8
https://en.wikipedia.org/wiki/Composite_material
the vacuum is what gets the air bubbles out .. the lightest structures use Pre Preg fabric
it is pre impregnated with the resin that is thermo setting , as I understand big users like Trek *
get the stuff refrigerated , so it wont cook early ..
then the vacuum bag scheme is made to go in an Oven, as it is hoovering out the air.
* Boeing and Airbus use a lot more of course. [and the Area 51 'skunkworks']
there is no handlebar controlling the steering ... its all lean steered ,
and since the feet are also powering the front wheel , real tricky to master.
https://flevofan.ligfiets.net/?doc=ch4-01 1wheel driving from the front, 2 in back
might have velomobile applications in a 3 wheel type ,
100 years ago they figured out the 2 steering wheels need to turn at a different angle ,
not stay parallel, ala Christiania cargo trikes.
as far as Carbon fiber building look up Vacuum Bagging https://www.google.com/search?q=Vacu...hrome&ie=UTF-8
https://en.wikipedia.org/wiki/Composite_material
the vacuum is what gets the air bubbles out .. the lightest structures use Pre Preg fabric
it is pre impregnated with the resin that is thermo setting , as I understand big users like Trek *
get the stuff refrigerated , so it wont cook early ..
then the vacuum bag scheme is made to go in an Oven, as it is hoovering out the air.
* Boeing and Airbus use a lot more of course. [and the Area 51 'skunkworks']
Last edited by fietsbob; 05-15-13 at 12:14 AM.
#5
Member
Thread Starter
Join Date: May 2011
Posts: 44
Bikes: univega rover sti univega rover st
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
The history of using metal is far larger then that of fiber reinforced resins. You guys need to practice and do a number of mock ups then test them to understand how to work with the materials and whether they're strong enough for your designs. There are a number of detail differences between fiberglasses and carbon fibers and how to work them. Then there's the compatibility with certain metals to deal with. Andy.
my husband has worked at a fiber glass mfg here in town, and while i will admit he has not made any thing bigger than a hood scoop for a 84' trans am. I feel confident that he will be able to make the velo mold with little difficulty. He has ordered a sample kit to experament with carbon fiber. this weekend he planse to make a copy of a football to get a idea on how the carbon fiber works.
thank you beckie
#6
Senior Member
Join Date: Feb 2012
Location: Rochester, NY
Posts: 18,063
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4197 Post(s)
Liked 3,849 Times
in
2,300 Posts
Thank you Andy
my husband has worked at a fiber glass mfg here in town, and while i will admit he has not made any thing bigger than a hood scoop for a 84' trans am. I feel confident that he will be able to make the velo mold with little difficulty. He has ordered a sample kit to experament with carbon fiber. this weekend he planse to make a copy of a football to get a idea on how the carbon fiber works.
thank you beckie
my husband has worked at a fiber glass mfg here in town, and while i will admit he has not made any thing bigger than a hood scoop for a 84' trans am. I feel confident that he will be able to make the velo mold with little difficulty. He has ordered a sample kit to experament with carbon fiber. this weekend he planse to make a copy of a football to get a idea on how the carbon fiber works.
thank you beckie
#7
Senior Member
Join Date: Mar 2012
Location: Tempe, AZ
Posts: 100
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 2 Times
in
2 Posts
FlevoBikes were a Front wheel drive center steered 2 wheel bike ,
there is no handlebar controlling the steering ... its all lean steered ,
and since the feet are also powering the front wheel , real tricky to master.
https://flevofan.ligfiets.net/?doc=ch4-01 1wheel driving from the front, 2 in back
might have velomobile applications in a 3 wheel type ,
100 years ago they figured out the 2 steering wheels need to turn at a different angle ,
not stay parallel, ala Christiania cargo trikes.
as far as Carbon fiber building look up Vacuum Bagging https://www.google.com/search?q=Vacu...hrome&ie=UTF-8
https://en.wikipedia.org/wiki/Composite_material
the vacuum is what gets the air bubbles out .. the lightest structures use Pre Preg fabric
it is pre impregnated with the resin that is thermo setting , as I understand big users like Trek *
get the stuff refrigerated , so it wont cook early ..
then the vacuum bag scheme is made to go in an Oven, as it is hoovering out the air.
* Boeing and Airbus use a lot more of course. [and the Area 51 'skunkworks']
there is no handlebar controlling the steering ... its all lean steered ,
and since the feet are also powering the front wheel , real tricky to master.
https://flevofan.ligfiets.net/?doc=ch4-01 1wheel driving from the front, 2 in back
might have velomobile applications in a 3 wheel type ,
100 years ago they figured out the 2 steering wheels need to turn at a different angle ,
not stay parallel, ala Christiania cargo trikes.
as far as Carbon fiber building look up Vacuum Bagging https://www.google.com/search?q=Vacu...hrome&ie=UTF-8
https://en.wikipedia.org/wiki/Composite_material
the vacuum is what gets the air bubbles out .. the lightest structures use Pre Preg fabric
it is pre impregnated with the resin that is thermo setting , as I understand big users like Trek *
get the stuff refrigerated , so it wont cook early ..
then the vacuum bag scheme is made to go in an Oven, as it is hoovering out the air.
* Boeing and Airbus use a lot more of course. [and the Area 51 'skunkworks']
https://www.acpsales.com/Carbon-Fiber-Prepreg.html
#8
Senior Member
Join Date: Oct 2009
Location: Willy, VIC
Posts: 644
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
ACP Composites sells a prepreg that can be left at room temp. From what I hear, it works pretty well.
https://www.acpsales.com/Carbon-Fiber-Prepreg.html
https://www.acpsales.com/Carbon-Fiber-Prepreg.html
#9
Member
Thread Starter
Join Date: May 2011
Posts: 44
Bikes: univega rover sti univega rover st
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Thank you all for your advice. My husband has contracted with a local company to supply us with with the fiber cloth. He is using the vac-infuse method. https://www.recumbents.com/wisil/wian...le/default.htm this velo build is what has inspired my guy to build a velo mobile for the two of us. He has taken to sketching up several different designs for the outer shell. For the bike frame he is using a slightly modded atomic zombi design. He has always wanted a velo, but being a large man, it is difficult to find a velo that he fits in too. Not to mention the cost ( any where from $2700 to $8300). After being told that due to his size he would have to pay a $180 to $220 surcharge, he started looking in to building his own. He finished building the atomic zombi recumbent trike and liked how it handled. He was displeased with the weight of the frame ( roughly 40 lbs) . after looking around he looked in to carbon fiber and is building the next bike out of it.
thank you
Beckie
thank you
Beckie
Thread
Thread Starter
Forum
Replies
Last Post
aprhockey
Framebuilders
8
05-25-12 11:07 AM