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MTB-Amputee Sponsors
MTB-Amputee would like to thank Brodie
Bikes for their support. Brodie has provided a 2004 Hurricane
full suspension bike for demonstration purposes on the bike
modifications page.
For more information go to Sponsors & Benefactors
Page.
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MTB-Amputee would like to thank Brodie
Bikes for supplying a 2004 Brodie Hurricane full suspension bike
for demonstration purposes.
The first picture shows the bike with original stock
parts with the exception of the bar ends and short stem. The second
picture shows the bike with the following modifications: The front
fork, rear shock, and pedals were changed from short travel cross
country style to beefier long travel free ride style, while the front brake was changed due to
malfunctions caused by inverting the Shimano hydraulic brake.
Click On Pictures To Enlarge.
The following three pictures feature Shimano Deore 9speed
rapid rise shifters along
with Shimano hydraulic brake levers. The top shifter & brake
lever operate the front derailleur and brake while the bottom
shifter & brake lever operate the rear derailleur and brake. You
will notice that the shifters have non removable optical gear
displays and the brake levers have remote fluid reservoirs. Although
it would be better to have the brake fluid contained in the brake
lever such as Hayes brakes and to have removable gear displays,
these pictures prove that you can use and easily adapt newer, high
end components.
Click on picture to enlarge.
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The following three pictures feature the services of Jason Place from Pacific
Rim Bicycle. Jason is seen here removing the optical gear
display from a Shimano Deore 9spd shifter as well as modifying the
gear display housing by sawing off the optical display window.
(please note, before you saw, remove the gear display indicator by
simply pulling off the small retaining spring.
Click on picture to enlarge.
Here, Jason replaces the modified gear display housing.
This picture shows the sawed off housing along with the display
indicator and retaining spring.
Click on picture to enlarge.
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The following two pictures show the same Shimano Deore 9spd controls as pictured above
except with
the optical gear display removed. (sawed off) You will notice how tightly and
close the controls fit together.
Click on picture to enlarge.
These two pictures feature the same controls and set up as above
with the exception of the front brake which has been changed from a
Shimano to a Hayes hydraulic brake. This was necessary because the
Shimano brake would occasionally develop an air lock from being
turned upside down.
Click on picture to enlarge.
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The following three pictures show the controls for a right hand
set-up.
The controls feature Shimano 8-speed rapid fire shifters
& Shimano clone V-brake levers along with Hayes
& Shimano cable actuated disc brakes.
The top lever& shifter (which are mounted upside down)
control the front brake & derailleur.
The bottom shifter & brake lever control the rear brake
& derailleur.
Click on picture to enlarge.
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The following two pictures feature Hayes Hydraulic Disc Brake
Leavers combined with a Shimano XTR 8 speed shifter.
Although this set-up uses a single front ring, you
will notice a shifter pod mount included in the set-up to
accommodate a front shifter if desired.
Click on picture to enlarge.
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You can see by this picture how the hook-terminal clamps on
to the handle bar.
Click on picture to enlarge.
The following three pictures feature a steering wheel adaptor made by Hosmer.
The adaptor allows you to ride with a conventional arm as well as
provides a basic release option while crashing (as opposed to being
locked on as shown above).
Click on picture to enlarge.
The following three pictures show how easy it is to use a conventional arm
with the adaptor. Please note that the arm pictured below has had
several minor modifications made to it in order to make it safer for
riding. For more info on the arm visit the Prosthetic
Modifications page
Click on picture to enlarge.
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The following three pictures show a new 8spd
Shimano XT shifter with an optical gear display. In order to fit all
the controls on one side, you must remove the optical
display. Please note that not all shifters have removable display
units. Also you can remove the display unit from some, but not all, Shimano 9spd
shifters.
Click on picture to enlarge.
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The following picture and information was submitted
by Jeremy Gordon.
HI, I'm a one armed mtb biker and I use a PVC cup
puttied onto a bar end and just put my stump in the cup (I'm below
right elbow) . I've attached pictures of the set up I've got on my
flat bar roadie. In terms of bike tips, I have a Rohloff hub which
is a just a grip shift that provides full 27 speed gear range with
only one front ring and an internal geared rear hub. I can recommend
it. Cheers Jeremy Gordon, Sydney Australia
Click on picture to enlarge.
Stay tuned for more pictures and information.
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The following pictures and information was
contributed by Charles Holden.
Recently I started mountain biking again on some
pretty steep trails, having only a rear v brake was a limiting
factor, I bought a new Santa Cruz with Shimano disks to see how a
disk brake would help, I boiled the fluid and again had some
moments, after looking around and not finding any good solutions I
made up my own, and now run both the front and rear disks off of the
same lever, I haven’t ridden enough hills yet to know if I need to
adjust the front to rear bias, but if I need to, I think the best
solution will by changing rotor size and pad composition.
I have attached pictures as I have not seen this anywhere else and
was all over the web prior to attempting this. So far on the rides I
have been on this set-up has worked remarkably well, I will try the
Ridge Trail at Montano de Oro next week for the torture test.
Please pass this along as it may be of benefit to someone else.
Charles Holden
charlesholden@earthlink.net
Click on pictures to enlarge.
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The following picture and information was
contributed by Jeff Cohen.
This brake splitter is used for racing motorcycles with doubled sided drum brakes, and is one cable in and two out. The cable ends used are 5/16 inch diameter.
Click on picture to enlarge.
As the input is 100% and the outputs are 50% each,
there may be suitability issues for use in a system operating front and rear brakes simultaneously. Perhaps someone may be able to work out some way of utilizing this with a spring mounting incorporated into the rear cable to lower the pull to prevent locking under emergency braking conditions.
(There are such devices used on comfort/touring style peddle bikes)
If you or any others may be able to find a use for these, I can source several such units at a price of around
$ 45.00 (AUD) including postage to US or UK by airmail. If someone wants to have a look and play around with one I'm happy to pay the postage to send it over, then if not suitable they can send it back.
My email is amgine@i.net.au Hoping this may be
helpful, Jeff.
Ps. When emailing, please write "cable
splitter" in the subject line.
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The following photos are of Justin Black along with
several engineering students that developed this bike for use with
one arm only. Their design recently tied for first at an university
engineering competition.
Click on pictures to enlarge.
For more information visit:
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The following two pictures were submitted by Ky Nam Tran who is
featured on the Suggestions From
The Net page. If you would like more information on Ky Nam
visit: http://b2r.free.fr?lang=1
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The following photos were contributed by David
Green who is an above left elbow amputee. The modifications were
made by JT Cycles in Salisbury South Australia.
The right hand controls which include the stock
Shimano EF29 8 speed rear shifter that came with the bike, are
combined with a 3 speed trigger shifter that operates the front. The
tandem brake set-up, which uses a throttle cable joiner from a
Triumph motorcycle, controls the front & rear brakes and is operated
by a Shimano V-brake lever.
Click on pictures to enlarge.
Since I posted photos of my previous bike (stolen whilst
shopping) I have replaced it with an Avanti Barracuda which has shimano hydraulic disc brakes and 27 speed shimano gearing. I had the bike shop replace the left shifter with a 3 spd thumb shift fitted to the right hand bar end and also replace the left brake lever with another right hand lever which was fitted above the original right brake lever (2 RH brake levers)
The bottom for the back brake and the top for front brake.
I have found this system works very well and gives me independent braking from either wheel.
I have also purchased a fitness cycle (road hybrid) which is an Avanti Blade Elite I have also modified this bike in the exact same way as my Barracuda.
For more information you can contact David at:
halfarm@bigpond.com
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The following pictures were contributed by Barry
Simmons-Stuber, the father of Molly Simmons-Stuber who is featured
on the Arm Amputees page. If you would
like more information on Mollys' arm or bike set-up, check out Prosthetic
Modifications or visit her webpage at: www.amp-info.net/BikePros.htm
Click on pictures to enlarge.
Mollys' 21speed bike features a Sram
7 speed grip shift
for the rear derailleur along with a ProMax single lever tandem brake
set-up pictured below, that works both brakes with one lever.
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If you would like to see more bike modifications for arm
amputees visit William Craigs' website: http://www.prostheticarm.com
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For information on Mert Lawwill's riding hand and
handle bar adaptor visit:
http://www.mertlawwill.com
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For information on the Hopey steering dampener
which slows down and stabilizes steering and control of the
handlebar. Visit Hopey Steering
Damper
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Kurt Yaeger, a former professional freestyle BMX rider who has
competed in the X-Games, and a recent below knee amputee, has been
using and highly recommends a new peddle system that uses magnets to
hold your foot on the peddle. For more information visit:
www.protonlocks.com
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Dan Mead along with fellow Prosthetist Bill Buston,
have come up with a hinged crank arm that allows leg amputees and
those suffering from limited range of movement in their knee to
pedal. For more information visit The
Hinged Crank Arm.
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The following photos were contributed by Jan
Barlage, who is featured on the Leg
Amputees page. He created this device to assist above knee
amputees while going down stairs or steeps. The device, which was
made by Tony Barela in Luxemburg, allows the rider to lock or hold
the crank arm and pedal in a level position.
 
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The following pictures are of Steve Middleton. Steve, an avid outdoorsman and runner, was cycling home from work on Sept 11/2000. A truck travelling towards him in the wrong lane struck him head on.
You can see by these pictures that it is possible
to mix different pedals and if you wanted, different shoes. Steve
uses a clipless pedal & shoe system for his prosthetic leg and
an old fashion toe clip for his good leg.
Click on pictures to enlarge.
For more
info email Steve at: saam@shaw.ca
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The following pictures are of Alexander
"Yankee" Malyshev who was born and lives in Moscow,
Russia. Although Alexander lost his leg in 1999, he has been an avid
mountain biker and cyclist since 1993. As you can see by the photos,
the only modification Alexander uses is a toe clip for his
prosthetic foot/leg.
If you would like more information on Alexander you
can email him at: kiborg-yankee3000@yandex.ru
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I am Howie Cohen, consultant for Rotor System Cranks of Madrid, Spain. Rotor Cranks eliminate the dead spot in the pedaling rotation of a
bike. The dead spot is that position wherein no power can be delivered to the rear wheel. The dead spot occurs twice in each 360 degree rotation of the cranks; when one crank is pointing straight down at 6 o’clock & the other crank is pointing up at 12 o’clock. The dead spot impedes the performance of all bicyclists but can be more debilitating to a cyclist with an amputated portion of the leg. It has been proven that the Rotor System Cranks enable bicyclists to enhance their athletic
performance. In addition to enhancing performance through the mechanical innovation, Rotors eliminate knee soreness caused by pedaling with the dead
spot. The Rotor requires that the cyclist use the larger muscles in the upper thigh & almost eliminates the use of the knee muscles & tendons for applying power to the rear wheel. Pedaling while standing is very smooth & powerful in comparison to the traditional crank systems.
Mr. Joe Sapere, an amputee bicyclist from Chesapeake, VA wrote, “The cranks are turning and I couldn’t be happier and I am excited about being able to stand in the pedals on our ride next year”. Joe is a member of the Amputees Across America group.
We are a small company with a passion for bicycle & bicycling. We can offer financial assistance for our product when such assistance is needed.
There is nothing like having first hand “on the road, trail and/or hill” experience. Rotors are always sold with a 100% satisfaction or money back
guarantee and come in crank lengths 155, 165, 170, 172.5, 175 & 180. We can and do mix the crank length sizes to custom fit bicyclists with special
needs. You can see more information on these two websites: www.rotorcranksusa.com (one of our online
resellers) www.rotorbike.com (our factory website in Spain)
Sincerely, Howie Cohen, Rotor USA howie@rotorbike.com
telephone (970) 453-2989 or cell (970) 389-7082
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The following suggestion was made by Ricardo Rueda.
Dear sirs,
A few days ago I met this guy who invented this double traction bike and thought it might help some amputees. Take a look at the link:
http://patmarinvent.com/index.php?mi=2
Cheers,
Ricardo Rueda.
PS: I think the website is not very clear telling how does it work, but the upper part of the fork swings a little bit and that’s how traction gets to the front wheel.
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The following suggestion was contributed by Alan
Roberts who has 20+ years of technical/medical fabricating
experience and has been riding bikes off-road long before they
started calling them 'mountain bikes'. Alan recommends visiting the
following website which contains information on a company that
produces the 'mountain drive' bottom bracket gear reductions which
could be very helpful for leg amputees. http://www.schlumpf.ch/md_engl.htm
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The following photos were contributed by Stacy Kohut
from Outlet Industries, makers of off road wheelchairs. For more
information visit;
http://www.r-onefourcross.com
Click on pictures to enlarge.
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Stay tuned for future updates and additions.
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