RNDM-BMX's Final Internal Rotation
It has been Two Full Years since the Concept first came to Mind, and finally the reality is all so close....
On the 8th of June 2020, a young BMX-er went out to do some Dirt Jump Promo work for RNDM-BMX before coming un-done over the Handle Bars on one of the Jumps. Now although he came out of it quite unscathed, (and missed the Stack on Film “Bummer Dude!”) it was still quite a close call to a Serious Injury even happening.
As the story continues, when it came time to dissemble the Bike it had a very unique Internal Braking System that looked very clean and easy to service but needed special parts like a Slotted Fork to make it all work. Being that the Fork was Damaged in the Carnage and not readily available made it quite difficult to get especially in the time of June 2020 thanks to practically all borders being closed.
However, a lifeline came through for the BMX-er as he remembered a Guy on eBay having a Bike that used the very same system. So the BMX-er ordered the New Fork (Pictured Above) and Dissembled the Bike (Pictured Below) while waiting on the New Fork’s arrival.
As the BMX-er Examined the Bike, he was fascinated by the way the Internal Braking Mechanism worked, yet felt there just might be another way…..
AND THIS PEOPLE was the birth of the very own RNDM-BMX INTERNAL ROTATION SYSTEM!
The Concept was not easy, and the Idea was not too small, it took a lot of looking into this and the other finding out what Bits and Pieces would actually make it work. Many Drawings and Concepts all played a part together to suss out the Many Moving Directions and other Factors involved in this idea of Fully Functioning. These Functional Points and Factors included the Following…..
1st. There was the Rotational Aspect as after all the Bars had to Spin Round and Round without the Brake Cable noting up.
2nd. There was the Rear Brake Cable that needed to stay in Spot and the Outer Shield that would be able to be Locked in Place.
3rd. There was the Up and Down Motion that would result in the Brake being pulled.
4th. There was the aspect of using a Non-Slotted Fork so that if anything were to go wrong with the Fork, it could easily be replaced.
5th. It had to Fit Into A Very Tight Space between the Bike Frame and the Fork giving it very little room to Move.
And Finally…..
6th. It had to use most of the Standard Way the Bike is Naturally giving it the Authentic New Skool BMX Look, as well as its Symmetric Design.
After all these factors were weighed up, there were many designs Drawn Up and then Created….
The Created Designs.
The First Design had the Rotation thought up but not very well for it was not Compact Enough and could not fit in-between the Fork and Outer Frame of the Bike.
The Second Design was another try and actually came up quite well even with the design and functionality. However, it seemed to fail in terms of fitting into the tight space between the Fork and the Frame of the Bike. But there was a little modification that sorted out that issue as it was time to see if this design would actually work.
The Third design was based on the Second Design Hub but had a slight flaw. This Flaw was not able to keep the Top Rotational part held together thanks to the Third Designed Hub being physically smaller. Therefore, it was never Experimented with, Ditched, Shelved, and Left behind in favor of the more functional Second Designed Hub.
The Forth Design of the RNDM-BMX INTERNAL ROTATION SYSTEM used the Second Design Internal Hub mixed with a particular way the Cable would run to Pull the Rear Brakes. However, this concept was not that effective due to the Severe Angle of the Brake Cable. It struggled being Pulled and Retracting back as a Result. So that Bike was moved on and another was ready in line to take its place.
The Fifth Design used a Different Newer Frame and a Re-design of the way the Cable would Pull the Rear Brakes thanks to a more Angular Like Motion. This Angular Motion allowed for the Rear Brake Cable to have less Sharpness in turn allowing for a smoother Contracting and Retracting type Motion. Although this Concept used the Second Designed Internal Hub, there were still Problems with the way the Internal Hub Functioned and needed a Re-design and Update to Eliminate some of the Issues.
But here is where the Rubber really hit the Road!
It was this Final Sixth Concept that pretty well had everything thought of right down to the Tee.
This was the Design that determined to Eliminate and fit in with the Top Six Points (a few paragraphs mentioned above) to give it a Fresh New League of its own.
Now although not much can be given away about the actual design, here is something that can be shared….
This Sixth Design was the Final and most Extensive Design thought up thanks to there being quite a number of Updates from the older ones. These Updates included a redesign of the Internal Hub that allowed the Brake Cable to be Pulled “Up and Down/ In and Out” much more Smoothly, Combining the fact that the Bars can be Turned Round and Round with minimal Wear and Tear. Overcoming the issues of the very tight space between the Fork and the Outer Bike Frame “which in turn” allowed for just enough space to Fully Function. Then Last and Least, Combining the
Aesthetic Look & Appeal with a Fully Functional Rear Brake.
And below Gentleman and Ladies, is pretty well the Final Result…..
Thank you so much for checking this Project out that is still in Development Stage.
And Remember…. Ride Responsibly….. :P
This Project was A Difficult one and Defiantly deserves Credits where Credits are Due. So as a Token of Appreciation to those that either suggested something or got somewhat Involved, A HUGE HUGE Shout Out to those People (described below) as they are not nessaceraly wanting to be named…..
A Big Shout Out to the Engineering Friend who Suggested the way the Rear Brake Cable could be Run.
A Big Shout out to the CAD Drawer that helped Draw up the Concept ideas.
And of course, a Big Shout out to the Tool Maker that helped this Project along the way….