Blackbird EZ-1 QUADRIBENT User Manual
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EZ-1 QUADRIBENT™
By Blackbird Designs Inc. and Blackbird Sales
Assembly Instructions
And User Guide
Mark 4.1 - May 2007
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FOR TECHNICAL SUPPORT CONTACT:
Blackbird Designs Inc.
Jim Black, President
12721 Appleview Lane
Burnsville, MN 55337
Phone: 952-894-7705
Email: blackbirdbikes@aol.com
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side, human powered vehicle that enables almost anyone to enjoy cycling.
Captain steering allows either rider to pilot the vehicle
drive allows people with different physical abilities to ride together with either rider generating from
ng an adult rider with a child and/or
can be separated into two recumbents bikes for “solo” riding and
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The Quadribent is 2-seat, side-by-
The 4-wheeled design maximizes stability and the recumbent position maximizes your seating comfort. Headsup design eliminates neck, shoulder and hand pain. Coand the dual0 to 100 percent of the power. The Quadribent is great for combini
physically challenged rider. The Quadribent
easy transportation however it is not recommended to be done on a regular basis. Most people never separate it.
General Rules For Safe Riding
1. DO NOT ALLOW ANYONE TO STAND OR SIT ON THE CARGO PLATFORM OR ANY OF THE
QUADRIBENT CONNECTING PARTS OR TO RIDE ANYWHERE EXCEPT SITTING ON THE SEAT.
2. Adults should supervise children at all times.
3. Always wear a CPSC approved helmet and some form of eye protection.
4. Always ride with a rear view mirror attached to your helmet or mounted to your vehicle.
5. Obey all traffic rules and regulations, signs and signals.
6. Ride on the side of the road, going in the same direction as the traffic.
7. Use proper hand signals when turning or stopping.
8. Be alert at all times, especially watch for cars pulling out into traffic and for opening doors.
9. Please read EZ-1 Owner’s Manual for additional information regarding “EZ-1 Riding Tips”, “Night Riding
Tips”, “Wet Weather Riding Cautions”, “Fitting Your EZ-1” and “EZ-1 Riding Tips”.
General Rules For Riding Your EZ-1 Quadribent
1. Inspect your EZ-1 Quadribent before every ride. Make sure all nuts and bolts on the EZ-1 and
accessory Quadribent frame are securely tightened. Check your brakes by applying them and pushing
the Quadribent forward and backward to make sure they are engaging properly. Check your tires for
proper air pressure as indicated on the sidewall of the tires. Make sure the quick release levers on the
wheels and seat are properly closed and secure. Make sure all of the Quadribent mounting hardware is
properly installed. Check to see that the quick release pins on the steering tie rod are properly inserted
and locked. Stop vehicle and discontinue riding if any mechanical problems arise, including but not
limited to any sudden changes in: vehicle stability, steering control, and / or pedaling difficulty.
2. Check and adjust your seat position/seat recline before mounting your Quadribent. Never attempt to
readjust the seat position while vehicle is in motion.
3. Always ride your Quadribent with a partner. Never ride the Quadribent “solo” for the vehicle may lose
stability in turns and can tip over resulting in serious injury.
4. Always wear the factory supplied seat belts when riding the EZ-1 Quadribent.
5. The Co-Captain Steering links the handlebars of both EZ-1 recumbents together allowing either rider to
pilot the Quadribent. Each rider should always keep both hands on the handlebars when the vehicle is
in motion. Each rider is responsible for steering around people, vehicles and/or any obstructions to avoid
collisions with any objects in your path.
6. Remove the factory supplied “parking brake” strap after mounting the vehicle and properly securing your
seatbelt. Always reinstall the “parking brake” strap before exiting the vehicle.
7. As a courtesy to your riding partner and for the safe operation of the Quadribent both riders should
communicate all non emergency turns, braking, starts and stops before they are executed.
8. For the safety of both riders, it is recommended the vehicle be slowed to less than 10 miles per hour
(mph) before initiating any turns of 90 or more degrees.
9. The EZ-1 Quadribent is designed for use on streets and bike paths only. Off-road, off-trail, mountain
trail and / or open field riding is not recommended and should not be attempted.
10. Do not modify, drill holes or mount accessories to Quadribent cross beams or frame.
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HELPFUL HINTS
The EZ-1 Quadribent ™ Kit comes in three slightly different models. Quadkit J&B part # 67458 is
designed for the EZ-1 SC or SX (steel frame), the Quadkit AX J&B part # 67459 is designed for the EZ-1
AX (aluminum frame). A custom Quadkit for the EZ-1 Lite (aluminum frame) can be ordered from
Blackbird Designs. Please be sure you have the compatible bikes and Quadribent™ Kit before
starting.
The EZ-1 Quadribent™
adjusted condition by your Dealer. If the kit is bought ‘factory direct’ by the customer, he is responsible
for final assembly and adjustment.
Completely assemble two EZ-1 Recumbents per assembly instructions, but DO NOT INSTALL
SEATS until after the Quadribent™ Kit is completely installed.
The sequential assembly numbering system has been adjusted so that the text and pictures share the same
number.
Designate one bike as the “LEFT BIKE” (facing forward) and second bike as the “RIGHT BIKE”.
The remaining portion of the Instruction Manual is pictorially based. Review instructions before starting
to assemble Quadribent™ Kit. Simply follow the sequence of pictures displayed on the following pages.
The average assembly time is approximately 30 minutes.
The Quadribent™ Kit is manufactured to be assembled with basic hand tools. Tools recommended
include: tape measure, wrenches, socket set, and metric allen wrenches.
If
questions arise or technical support is required during the assembly process, please contact Blackbird
Designs / Sales for a prompt service. The contact information is listed on page 2.
Blackbird Designs / Sales recommend the replacement of the O.E.M. tires supplied with the EZ-1 SC or
SX recumbent bikes (EZ-1 Lite and EZ-1 AX come standard with 100 psi tires). We suggest installation
of high pressure Maxxis Hookworm (110 psi 16” front and 110 psi 20” rear) tires to reduce the rolling
resistance and improve performance of the Quadribent. Check with your local bike shop for availability.
These tires are also available from BlackBird Sales to dealers at special prices.
Kit is partially assembled, and is intended to be sold in a fully assembled and
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