FDAX34 Delta Trike Axle FreeWheel Adapter


Our freewheel adapter fits on a 3/4 inch steel axle

Our Delta Trike Axle FreeWheel Adapter fits onto any 3/4 inch axle and allows the installation of a standard Shimano style thread-on freewheel and bicycle disc brake rotor. With this part, you can add a pedal transmission to any trike or quadcycle using only standard bicycle components. The included locking bolt secures the part to the axle and allows for easy removal at a later time. The 6 disc rotor mounting holes are also tapped so you can mount your bicycle disc brake rotor using the bolts are supplied. The FDAX34 Delta Trike Axle FreeWheel Adapter is a high quality machined part made of aluminum and anodized black.

Any standard 6 bolt bicycle disc brake rotor will fit

Our Delta Trike Disc FreeWheel Adapter part is drilled and tapped to fit any standard 6 bolt bicycle disc brake rotor, which uses the ISO 6 bolt mounting standard. Hex head disc brake mounting bolts are supplied with this part.

A standard bicycle disc brake rotor installed on the adapter

Bicycle disc brakes are widely used and fairly inexpensive, so they are the perfect option for adding brakes to a delta trike. Bicycle disc brakes are also highly effective on even the largest cargo trike, and will offer superior breaking power for many years without needing any adjustment. Our Trike Axle FreeWheel Adapter will fit any diameter disc brake rotor that uses the ISO standard 6 bolt mounting pattern.

A typical Shimano multi-speed freewheel

To add a transmission to your trike or quadcycle, you will need to install a freewheel onto one of the rear axles. A freewheel is a single speed or multi-speed sprocket that can ratchet in reverse so that drive power is only applied to the axle when it turns in the clockwise rotation. A standard Shimano type freewheel is installed by threading it on in the clockwise rotation. A more detailed description of a Shimano thread-on freewheel can be seen on our DIY tutorials page.

The backside of the freewheel showing the threads

The threads on the backside of the freewheel are fine 1.375" x 24 teeth per inch clockwise threads. These threads are standard on all Shimano type thread-on freewheels, even the single speed BMX types. Shimano freewheels can be purchased at most bicycle shops and are available with multiple chain rings ranging in count from as few as 5 to as many as 9. Department store bicycles and lower quality steel rear wheels are also a good source for salvaging a Shimano style thread-on freewheel.

The Shimano freewheel installed on our adapter

Once the Shimano style thread-on freewheel is installed on our FDAX34 Trike Axle FreeWheel Adapter, you can drive your trike axle using a standard bicycle chain and crankset. For multiple gears, a standard bicycle derailleur is used in order to give your trike or quadcycle as many gears as a regular bicycle. Typically, a trike will only drive one of the rear wheels, but on our KyotoCruiser tandem trike, each rider has his or her own fully independent transmission, so two of these adapters are used to offer dual rear wheel drive and braking.

Both the freewheel and disc brake installed on the adapter

Our FDAX34 Trike Axle FreeWheel Adapter allows you to make practically any kind of human powered trike or velocar using only standard inexpensive bicycle components. You can now add drive and braking power to any 3/4 inch axle and create your own trike, quadcycle or velomobile.

We understand that it can often be difficult to find a local machine shop that will take on a small job and finish it quickly for minimal cost, so we stepped up! Our parts are tested and guaranteed to fit as advertised, so you can complete your DIY project with minimal frustration, delay and expense.

This part will fit the following plans directly :

StreetFighter Recumbent Racing QuadCycle KyotoCruiser Sociable Delta Trike LodeRunner Single Rider Cargo Trike LodeRunner2 Tandem Cargo Delta Trike

StreetFighter Racing Quad
Quantity Needed : 1


The FDAX34 Trike Axle FreeWheel Adapter transfers power from the cranks to the left axle on the StreetFighter. You will also require one DBAX34 Disk Brake Adapter part to install a second disc brake on the right side axle.

KyotoCruiser Tandem Trike
Quantity Needed : 2


The KyotoCruiser has a dual axle independant transmission and brake system that will require two FDAX34 Trike Axle FreeWheel Adapters, one for each axle.

LodeRunner Cargo Trike
Quantity Needed : 1


The FDAX34 Trike Axle FreeWheel Adapter transfers power from the cranks to the right axle on the LodeRunner. You will also require one DBAX34 Disk Brake Adapter part to install a second disc brake on the left side axle.

LodeRunner Tandem Trike
Quantity Needed : 2


The LodeRunner Tandem Cargo Trike has a dual axle independant transmission and brake system that will require two FDAX34 Trike Axle FreeWheel Adapters, one for each axle.


Aurora Delta Racing Trike

Aurora Delta Racing Trike
Quantity Needed : 1


The FDAX34 Trike Axle FreeWheel Adapter transfers power from the cranks to the left axle on the Aurora. You will also require one DBAX34 Disk Brake Adapter part to install a second disc brake on the right side axle.











This part *can* fit the following plans with modifications :

Note : Before purchasing this part for use on these plans, read through them first so you can understand what will need to be changed in order to make them fit properly. It helps to own one or more of the above plans in order to see how the part should fit before you attempt any modifications. If you are unsure about modifying our plans to use this part, or would like to know if our parts will fit your own custom design, then visit our forum and we will answer your questions.

TimberWolf Suspension Delta Trike DeltaWolf Recumbent Racing Trike DeltaRunner Recumbent Delta Trike Gladiator Phat Ass Chopper Trike

TimberWolf Suspension Trike
Quantity Needed : 1


The FDAX34 Trike Axle FreeWheel Adapter can be used on the TimberWolf by using a 3/4" axle in place of a 5/8" axle. You can also use one DBAX34 Disk Brake Adapter part to install a second disc brake on the right side axle.

DeltaWolf Racing Trike
Quantity Needed : 1


The FDAX34 Trike Axle FreeWheel Adapter can be used on the DeltaWolf by using a 3/4" axle in place of a 5/8" axle. You can also use one DBAX34 Disk Brake Adapter part to install a second disc brake on the right side axle.

DeltaRunner Delta Trike
Quantity Needed : 1


The FDAX34 Trike Axle FreeWheel Adapter can be used on the DeltaRunner by using a 3/4" axle in place of a 5/8" axle. You can also use one DBAX34 Disk Brake Adapter part to install a second disc brake on the right side axle.

Gladiator Chopper Trike
Quantity Needed : 1


The FDAX34 Trike Axle FreeWheel Adapter can be used on the Gladiator along with a single speed BMX freewheel. You can also use one DBAX34 Disk Brake Adapter part to install a second disc brake on the right side axle.



Liability Disclaimer

Upon purchase, receipt, and/or use, you (the Purchaser) agree to hold harmless Atomic Zombie® Extreme Machines (www.atomiczombie.com) and its owner, directors, and officers, heirs, or employees of any and all product liability. The Purchaser agrees that the aforementioned and will not be held responsible or liable for any consequential, direct or indirect or special loss, injury, or accidents caused by any products that we produce, promote, and/or sell.

As a condition of purchase, receipt and/or use, the purchaser will from the date of purchase, indemnify and hold harmless Atomic Zombie® Extreme Machines, and any entity or individual ever associated with Atomic Zombie® Extreme Machines past or present, including sponsors, licensors, advertisers and suppliers and business associates, from any and all liability, causes of action, claims, demands, costs or debts of any kind or nature, incurred or arising from or out of the Purchaser’s or other’s use of the products, whether bought by the purchaser, his/her heirs, executors or assignees or by third parties.

Accordingly, Atomic Zombie® Extreme Machines expressly disclaims ANY CLAIM OF ANY KIND RELATED TO PRODUCTS LIABILITY AND/OR WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE for the products, it being expressly understood that Atomic Zombie® Extreme Machines shall not be held liable for any claim whatsoever related to any defect, product liability or other related claims for the products produced, manufactured, sold or otherwise distributed by Atomic Zombie® Extreme Machines or any third party.

Terms of use, Warranty & Liability Waiver

ATOMIC ZOMBIE® EXTREME MACHINES offers its products with the terms, conditions and notices as follows:

Terms of use: The products are offered to you conditioned upon your acceptance without modification of the terms, conditions, and notices contained.

Exclusive Obligation: The products have been designed for a specific use of applications. The products may not be used for unlawful purposes and that use is expressly prohibited under the terms and conditions of their use.

Use limitation: You may not copy, distribute, transmit, display, perform, reproduce, publish, license, create derivative works from, transfer, or sell, any information from the ATOMIC ZOMBIE® EXTREME MACHINES website or its products.

No Warranty: The products are not warranted against any manufactured defect from date of purchase.

Guarantees: No guarantees are given or implied to product efficiency, product performance and production or improvement.

Limitation of Liability: In no event shall ATOMIC ZOMBIE® EXTREME MACHINES be liable for any direct, indirect, punitive, incidental, special consequential damages, to property or life, whatsoever arising out of or connected with the use or misuse of its products.

Other Statements: ATOMIC ZOMBIE® EXTREME MACHINES employees or representatives, ORAL OR OTHER WRITTEN STATEMENTS, DO NOT CONSTITUTE WARRANTIES, shall not be relied upon by buyer, and is not part of the contract for sale or this limited warranty.

Entire Obligation: The TERM OF USE, WARRANTY AND DISCLAIMER document states the entire obligation of ATOMIC ZOMBIE® EXTREME MACHINES with respect to the products.

General: This disclaimer statement is governed by the laws of Canada. You hereby consent to the exclusive jurisdiction and venue of the Courts of Canada, in all disputes arising out of or relating to the use of our products. Use of the products is unauthorized in any jurisdiction that does not give effect to all provisions of these terms and conditions, including without limitation this paragraph. If any part of this disclaimer is determined to be invalid, void, unenforceable or illegal, including, but not limited to the warranty disclaimers and liability disclaimers and liability limitations set forth above, then the invalid or unenforceable provision will be deemed superseded by a valid, enforceable provision that most closely matches the intent of the original provision and the remainder of the agreement shall remain in full force and effects.

Modification of Terms and Conditions: ATOMIC ZOMBIE® EXTREME MACHINES reserves the right to change the terms, conditions, and notices under which its products are offered at any time, for any reason with or without prior notice.


FDAX34 Delta Trike Axle FreeWheel Adapter