From our YouTube Channel

Loading...

Off-road Assembly

How to assemble and install Fat Tires:

I recommend purchasing a fat bike with complete wheel assembly and a tire hub with

spokes. It’s not cheap and will cost a bit more but it will save a lot of time.

https://www.amazon.com/dp/B0C8CQSHG3?ref=ppx_yo2ov_dt_b_fed_asin_t1. This wheel assembly comes complete with an axle, however, the axle is 10mm in diameter and it’s too short. To install it on a Wike you will need a longer a 12mm axle that is 220mm long (most bike parts are specked in metric units of measure). Once you remove the existing axle you will also need to remove the ball bearing that are in there since they are 10mm x 26mm x 8mm W. The bearing we will need must be 12mm x 26mm x 8mm (9mm will also work) to accommodate the 12mm axle. The bearings that are in the hub are hard to remove so you will need to hammer .


2. The axle that I found to work best is the Minho 12mm 230mm Front Rear Axle it comes with three bushings and the end bolt. We will need four of the 5mm bushings and two of the 20mm bushings. There is only 5mm per set so I decided to buy 4 sets of axles. Of course, you can purchase the 5mm bushing somewhere else if you don’t want to buy additional axles.



https://www.amazon.com/dp/B0BRN6PHHW?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1 


3. Ball bearings – this is the tricky one. We need 12mm x 26mm x 8mm and this size is not easy to find (in a classic ball bearing). Ball bearings are recommended for this application because the load that we are applying is the radial load (applied from the top). Since the Juria moves at a max speed of 12 km/h, I decided to use the Thrust Ball Bearings, although these are really designed for handling axial load, but these were readily available on amazon and very affordable.

https://www.amazon.com/gp/product/B07G7ZH69Q/ref=ppx_yo_dt_b_asin_image_o03_s00?ie= 

 

These are 9mm wide but as I mentioned they fit into the hub without any problems. If you are set on using a ball bearings, I did find the right size (12mm x 26mm x 8mm) but it’s not on prime and they are pricy:

https://www.amazon.com/dp/B0CDVSY2Z9?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1 


4. Flipping one tire on the wheel: The fat-tire wheels are designed for a bike, so they are typically mounted in the same orientation. Since we are mounting them on the opposite side of one another to keep the tire thread in the right direction, we will need to flip one of the tires. This sounds harder than it is – if you have ever changed a flat on the bicycle you will not have a problem with this.


5. Install the l-faster gear on the new fat tire wheels.



6. Axle assembly and installation on the Wike: Assemble and insert the bearing into the hub – if needed use a small hammer and tap them in (be careful not to damage the hub). At the head end of the axle, insert the 5mm bushing then insert the axle through the bearing and the hub. Then insert the 20mm bushing (this one is very important and will act as a spacer). The fat tire is much thicker so we need to make sure that it clears the Wike parts and canopy and does not run against the frame. With the 20mm bushing in place, insert the axle through the Wike frame hub. Next, reach under the seat of the Wike and find the axle (it may take some time but you will find it). Once you have the axle insert another 5mm bushing and the screw on the 12mm end bolt.









Comments

Post a Comment

Popular posts from this blog

About the Juria Project

Image
Our focus is on creating an adaptive electric stroller that caters specifically to the needs of individuals with disabilities and allows them and their families to enjoy hiking trails, beaches, dirt roads, and forests just as we all do. This is not an electric wheelchair, an All-Terrain Trackchair, or a robot that requires extensive training and comes with a hefty price tag. The Juria is a stroller that fills a gap that's been overlooked in the adaptive equipment world. In the status quo, the market offers wheelchairs and robot-like vehicles, but they often miss the mark for many individuals with special needs. Some people require the comfort of a stroller-like configuration, complete with a canopy enclosure for protection from the elements. Others may have sensory issues and prefer the security of an enclosed space. And for those like my brother who can't sit upright for a long time as required in a traditional wheelchair, the options become even more limited. For the past 5 y...
Read more

Prototype – Parts, Components, and Cost

Image
We're going to use a method similar to a powered wheelchair. It can be steered, moved forwards or backwards, and has two-wheel rear drive. Also, when it stops, it doesn't move easily because of the gearhead in the motor. This could be helpful, especially downhill. A joystick is perfect for this because you can control how fast and in which direction (forward or backward) each motor turns with just one lever. Wike Special Needs Extra Large Bike Trailer Conversion will be done on the Wike extra large trailer. My brother weighs 95lbs and he is 4’11” tall so we chose the extra-large version because it can accommodate an occupant up to 5’10” tall and 150lbs in weight. Our conversion design will also work on the regular-size special needs trailer. Both models are very spacious, safe, and offer the best comfort. All parts and components will be mounted directly on the Wike frame to make it look stock and professional.  WIKE $1,099.99 USD L Faster Dual Motor Kit This is a 500W Motor Le...
Read more

Ju·ria ˈju̇rēə - The name

Image
I am often asked about the meaning of “Juria” so here it is. The name Ju·ria, pronounced ˈju̇rēə, carries a deeply personal significance within our family. Ju·ria derived from the word "stroller." From the time my brother was a baby, he loved the outdoors and spending time in the woods on trails – especially in the comfort of his stroller. Hikes and long walks became his most cherished activity, it was a sensory and soothing experience that relaxed and calmed him. My brother has apraxia of speech (AOS), so communicating was always a challenge for him. AOS happens when the brain has trouble coordinating the oral movements of the mouth and face, which are needed to pronounce words. Many of my brother’s words are hard to understand. Nevertheless, from a young age, my brother persistently attempted to speak, verbalize, and connect with those around him. One day he started saying Juria. He wouldn’t stop and we eventually figured out that he was referring to his stroller and asking...
Read more

Proof of Concept

Image
The video below demonstrates a proof of concept design that allows for an early-stage design that tests the idea of what is to become the finalized Juria Project. I used a partially built Landworks Utility Service Cart and Wheelbarrow  for the motor and throttle configuration as well as the early-stage power source. The Wike Jogging Stroller was then mounted on top. Although there are several flaws in this configuration, including the center of gravity in turn with stability, as well as practicality and feasibility by factors such as all-terrain capabilities and battery life, this early stage concept seeks to paint a blurry picture of what is to become of the Juria.
Read more

Reinforced Rail Design Needed

Image
We used 1” aluminum square tubing for the rails design that supports the canopy and chassis. During the third test drive on grass (a bumpy surface), both rails broke, but not at the welds, so it doesn’t seem to be a fabrication issue—it looks like they were just overstressed. Switching to 1.5” aluminum tubing would be ideal since it’s almost three times stronger. For now, we're sticking with the 1” tubing and adding gussets on both sides of each rail to reinforce it. The final design will use 1.5” tubing.   Updated rail design - PDF and .dfx file PDF .dfx
Read more

Mind The Gap

Image
In the dynamic landscape of technology, there is a noticeable gap that persists in the world of adaptive equipment, especially when it comes to mobility aids. While advancements in electric bikes and other personal transportation devices have surged, the same cannot be said for adaptive equipment like wheelchairs and track chairs. The divide between mainstream mobility technology and adaptive solutions is stark, leaving a significant portion of the population underserved. Take, for example, the world of wheelchairs. Traditional manual and electric wheelchairs have undoubtedly improved the lives of many, offering increased independence and mobility. However, when compared to the sleek design and advanced features of modern e-bikes that can travel for hours at 20 mph, it becomes apparent that there is a considerable discrepancy in innovation. Advanced track chairs, designed for off-road use, have seen some progress, providing enhanced maneuverability on various terrains. These chairs off...
Read more

Juria CAD Model, Description of Parts, and Assembly Details

Image
This is one of the initial 3D renderings, showcasing the key components that make up the Juria. Each component serves a specific purpose, contributing to the final Juria design. The battery will be mounted in the center of the rig and will power both motors. Placing the battery in the center helps to distribute weight more evenly across the vehicle or device, improving balance and stability. In the Juria, which will prioritize safety and practicality, this can lead to better handling and reduced body roll during turns. A centrally mounted battery also lowers the center of gravity, improving overall vehicle dynamics, and making it more stable and safer. The vehicle's center is often the safest location in the event of a collision or damage from the underside. While traversing through rugged trail terrain, mounting the battery in the center protects it from damage, which is crucial since batteries can be hazardous if ruptured. The front wheel will be able to gyrate around itself...
Read more