Search results

In the meantime/while I'ma doin' that, here is a video with lots more low speed aero info (top speed ~80KPH or ~50MPH) The FSAE racer, in the video has ...rear wheel drive ...an inboard motor ...no traction control ...&/or stability control (same as my racers) ;) * Notables to watch for Low...

Hey T, I'm open to anything that "gets the job done" :cheers2: Still "baffles" me as to "why?" ...so, I'ma maybe bend a few "test pieces" with the seam in different orientations Like, straight up ~12:00 ...around 45* or ~1:30 ...sideways ~3:00 ...around 45* or ~4:30 ...& straight down...

Hey Ez, Yup ...but, I've been doing compound bends ...in this type of material for years & The orientation of the seams ...usually doesn't affect the bends :unsure:

Here are the (2) roll bars :sifone: Here's how I did 'em :cheers2: The plan A piece of pipe Markings, on the piece In the bender * This is after the very first bend ...& what (10) "pumps" (of the jack) looks like :thumbsup: This what it looks like after "executing" the plan :2guns: *...

Hey T, Back when ya wasa lookin' for air cleaner options, I remembered I had this "fancy" air cleaner & tuby thing It came off of one of them "fast-n-furious" kinda cars...someone had "blown up" & wasa scrappin ...but, couldn't find it :huh: Then, the day after ya reveal V2...I found it :mad2:

Hey WTR, Well...let's take a look :thumbsup: These are the (2) pieces that bent properly The seam of the left piece seems ta be @ ~6:00 ...& the piece on the right seems ta be @ ~9:00ish Another view for seam clarity These (2) pieces were cut out of the same piece of pipe ...then, I got...

OK then, lets bend some pipe :thumbsup: I wasa runnin' low on 1/2" Schedule 40 water pipe ...so, I stopped by the Metal Store * I wasa gonna buy (2) full 21' "sticks" of pipe ...but, they only had (1) full "stick" ...& (1) short(er) piece Let's start with the trailing arm ...so, I measured...

Yup, I'ma likin' it too :thumbsup: Just a thought ...maybe "blacken" it (flat black) ...so, the engine & air cleaner will "stand out"...more ;)

FMO (for more info) :smartass: ...& ta try-n-help explain...a bit more ;) This video has lots of detailed, under car aero info ...why it's important (on a race car) ...a "ride along" portion (with G force info) ...& is using "flexible" side skirts :thumbsup:

Hey Denny, If we were building a racer that only did "sprints" ...or we just wanted to go straight, I agree any extra gravity/weight would be No Bueno :cheers2: But, these racers are usually "run" on curvy road courses ...so, we have to have good maneuverability ...to be able to maintain a...

More on the Bernoulli effect ;) Let's think about things, we have all seen &/or encountered for ourselves, out "in the real world" :thumbsup: First think of a leaf (like from a tree) slowly floating down a stream * I brought visuals ...ta help illustrate :cornut: When, the leaf, encounters...

Hey Denny, 1.) I came across a TV program last evening, about the Wright bros. first "test flights" ...& the "plane" (actually glider) in them tests was not motorized (so low/slow speed) According to the program, the first "test plane" had a wingspan of ~17' ...& the second (more known) "test...

I heard someone say..."that still looks pretty HUGE" Well...I've been kinda cheatin' by usin' my Hell-raiser kart as a sizin' template Wheelbase ~48" Overall length ~64" Track width ~36" Video/visual of Hell-raiser :2guns:

Also, thinkin' ahead :thumbsup: I'm "currently" only workin' with 48V systems (top speed ~30MPH) ...but, if/when I move up to 60V or 72V or/even 90V systems, I could potentially ...double my speed (to ~60MPH) ...or maybe even triple my top speed to ~90MPH (OMGGGGGGGGGGGGGGGG) :2guns:

Hey WTR, Let's look at this from a ???? to weight ratio "point of view" ...as compared to a full size racecar Power to weight ratio Many full-size race cars use ~500+HP to motivate ~3,000lbs. & My EA racer uses ~1HP to motivate ~300lbs. Aero to weight ratio So/doesn't this mean that the...

Confirmin' & "pointin' out" (to myself) which "marks" to cut...before cuttin' :thumbsup: Back out ta Nature ...& yup, it's still Winter time :furious2: ...but, now, I got some wood "scraps" ta burn...free heat :wai: I got the front ends, of all (4) panels trimmed off Then, took 'em back...

Please don't take "my questioning" personal...my friends :cheers2: I truly want to learn & understand more about "how things work" ...so, I can then (hopefully) apply some of that knowledge, to my mini-racers :auto: My new Life Ethos is to question...everything ...&/then, try-n-make my own...

Hey Denny, This doesn't seem to "jive" (technical term) with what I've been learning :unsure: ...please explain?? AFAIU DF (downforce) produced by "force" (air "hitting" a surface) is supposed to be ~3X "draggier" (technical term) ...than any DF that's created by "pressure differences" (by...

OK/well...movin' on... For my "next trick" ...let's make a full-size wooden mock-up ;) Rounded up some scrap plywood ...& commenced ta measurin', markin' & drawin' :thumbsup: * Winter may slow me down (~30* this afternoon) :oops: ...but, it cannot/will not stop me :cornut: Got 'er assembled...

Oooh...a plot twist :popcorn: