Not going to lie, some of the comments here hurt. The first testing was not done by the first people to buy them or even 3Brothers team drivers. I have been working on these since 2019. The first people to test them were guys local to me. The first samples were sent out early 2020 to someone I knew and to a very large name in the RC industry. I took their feedback and criticism and spent another year refining the design and material.
I have been through just about every manufacturer of TPU\TPE and just about every different durometer\shore hardness available before I found one that worked well and didn't "freeze" up in cold weather. I spent thousands of dollars researching, printing, testing, and building printers to figure out what worked best.
A lot of the copies you see I have files very similar that I have already tested. I tried using infill, which I didn't like at all. Not have any of them even come close to using a material as soft as what we use.
The material we use is not cheap and is a pain in the ass to print. It's like printing wet spaghetti.
I even took trips to where the filament is made to help them understand the issues I was having and to create printing processes and change their manufacturing process to make it better. They went from producing one batch a year to one batch a month.
We have no issues with people making their own, its the best part of the hobby for me. But what people don't understand is the over 2 years of research they got from me while claiming I copied someone. Sure, there have been airless tires for decades and even TPU tires for RC cars. There wasn't a single insert that I saw, so I decided I wanted to have a go at it.
There was someone who actually messaged me to help them obtain some Anti-Foams while they were sold out only to get them from our site. He then cut them apart and copied almost exactly the design I came up with.
As for the price we thought it was a very fair price considering the alternative. Our materials costs are much higher, our manufacturing time is much higher, our waste and QA loss is much higher. Not to mention these will last much longer in adverse conditions than our foam competition. If these last even just 50% longer they are a bargain. I have been running a set for almost 2 years now of a different material that is similar to NinjaFlex and you can't tell they are that old. They have seen tons of mud, snow, water and my shitty driving. Lol.
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