JConcepts Thread
Tech Master
iTrader: (17)
Joined: Feb 2015
Posts: 1,318
From: Michigan
For a few drive arounds we did on some fresh EOS Offroad carpet, the fuzzbite front and rears on 4wd felt great. Be curious to try a nessi and see but I think these will be the initial go to tires, or at least combined with Pinswag fronts.
Thanks, I just picked up a set to try,
Any thoughts on making a bigger pinned front for turf conditions? common here to trim up some schumacher mini darts for 4wd fronts, be cool if could do something like that with say a nessi sized front tire.
Tech Master
iTrader: (39)
Joined: Dec 2012
Posts: 1,940
From: Delaware
What are the chances of a s15 or something better looking coming out for the Tekno EB410.2... the f2 body is horrible to look at. I would greatly appreciate a s15 styled body so it would match my ebuggy, etruggy and mini truggy body styling... the options for eb410.2 bodies is dismal at best.. you have 2-3 options and they all look horrible in my opinion.
What are the chances of a s15 or something better looking coming out for the Tekno EB410.2... the f2 body is horrible to look at. I would greatly appreciate a s15 styled body so it would match my ebuggy, etruggy and mini truggy body styling... the options for eb410.2 bodies is dismal at best.. you have 2-3 options and they all look horrible in my opinion.
Tech Addict
Joined: Oct 2021
Posts: 662
From: Phoenix, AZ
In regards to the S15, and any JCon body for that matter, do you guys do any CFD or Wind Tunnel testing?
So you can actually see and verify things like the coefficient of drag, or where the center of pressure is located, or the total relative downforce? Or study things like wing interaction is on various chassis? Or tune specific features for specific chassis, like the kick ups on the side of the cockpit on the S15, potentially being in different locations for the B74.2, and the 22X-4 because they balance a bit differently?
Or is it more of a case of function follows form? Like a design is penned, and from the look of it, it is tweaked to be a "better" shape aerodynamically based on some general principals?
No one ever really seems to be able to quantify "why" one body is better or worse than another, Its just generalizations about feel. I am really tempted to build my own wind tunnel with some corner scales, and start measuring the results myself "For Science™"
So you can actually see and verify things like the coefficient of drag, or where the center of pressure is located, or the total relative downforce? Or study things like wing interaction is on various chassis? Or tune specific features for specific chassis, like the kick ups on the side of the cockpit on the S15, potentially being in different locations for the B74.2, and the 22X-4 because they balance a bit differently?
Or is it more of a case of function follows form? Like a design is penned, and from the look of it, it is tweaked to be a "better" shape aerodynamically based on some general principals?
No one ever really seems to be able to quantify "why" one body is better or worse than another, Its just generalizations about feel. I am really tempted to build my own wind tunnel with some corner scales, and start measuring the results myself "For Science™"
In regards to the S15, and any JCon body for that matter, do you guys do any CFD or Wind Tunnel testing?
So you can actually see and verify things like the coefficient of drag, or where the center of pressure is located, or the total relative downforce? Or study things like wing interaction is on various chassis? Or tune specific features for specific chassis, like the kick ups on the side of the cockpit on the S15, potentially being in different locations for the B74.2, and the 22X-4 because they balance a bit differently?
Or is it more of a case of function follows form? Like a design is penned, and from the look of it, it is tweaked to be a "better" shape aerodynamically based on some general principals?
No one ever really seems to be able to quantify "why" one body is better or worse than another, Its just generalizations about feel. I am really tempted to build my own wind tunnel with some corner scales, and start measuring the results myself "For Science™"
So you can actually see and verify things like the coefficient of drag, or where the center of pressure is located, or the total relative downforce? Or study things like wing interaction is on various chassis? Or tune specific features for specific chassis, like the kick ups on the side of the cockpit on the S15, potentially being in different locations for the B74.2, and the 22X-4 because they balance a bit differently?
Or is it more of a case of function follows form? Like a design is penned, and from the look of it, it is tweaked to be a "better" shape aerodynamically based on some general principals?
No one ever really seems to be able to quantify "why" one body is better or worse than another, Its just generalizations about feel. I am really tempted to build my own wind tunnel with some corner scales, and start measuring the results myself "For Science™"
One thing I learned early on when making my transition from pro driver, to team manager, and later into product development is how powerful the mental side is in R/C. Certain shapes and sizes are perceived differently while driving them around the track and that can be just as powerful as actual function. There have been so many times where multiple pro drivers "feel" completely different handling traits from 1 style to the next, but once driver "X" starts winning with it, drivers "Y & Z" just follow even though they didn't think it was as good. The same happens with many manufactures, something becomes dominate and they follow; hence, how many companies have their own copy of our JConcepts Silencer/S15 body.
Short story...Many years ago we had someone involved on the pro level of R/C, that worked in the aero industry put a buggy in the wind tunnel and they were shocked with the results. The body shell had very little affect on anything because all the suspension pieces (shocks, towers, front upper and lower arms, etc) created so much dirty air, that the body couldn't really produce any proper downforce
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