AttackBunny

I assume people putting themselves, or their personal shit in everyone’s way.

Yes Karen, you and your five friends, walking shoulder to shoulder, on the only place for people to walk, at a slow meander, DOES obstruct everyone else. And yes, I have somewhere to be, but even if I didn’t, get the fuck out of the goddamn way.

Thanks!!!

Funny enough. We just built two SR20VET engines. And even funnier, they were both going into roadsters. Neither guy knows each other, we didn’t suggest the combo. Just a coincidence.

We’ve done a few 510s with SR20DE/DET engines now. We actually do a lot of SR engines, both VE/VET and DE/DET.

We’ve done L series too, but I can’t think of a KA we’ve done that ended up in a 510. Usually they stay in an S chassis.

We also built an SR20 that ended up in a 300XZ. Yeah….. I still question the thought process behind that one.

Unrelated, we also built a VQ35 for Dai Yoshihara in 3 days. Moto-IQ did an article about that one too.

@potato

I found a REALLY shitty picture of a computer monitor with the dyno of the SR15VET we built for the LSR car.

sorry it’s an instagram link

You can see how low the power is until about 6k rpm, and then it’s like a switch was flipped, and POWER.

Little bit of the wiring

I already linked the land speed car we built in another reply (should be easy to find under my original reply). If not lmk.

I was looking for a link to another car and stumbled on something one of our customers did.

YouTube video on the “Hakobird” build

So funny story, I guess. Not so funny for the poor person, ME, who covered themself in fiberglass for weeks for it to be completely ruined by someone else. The part where he shows the wide body kit installed and perfectly aligned and pretty? Yeah. It left our possession to go to paint like that. I spent weeks making it perfect, and I had to re-engineer A LOT of the kit because their mold was off by about 20-30* to the right, so nothing fit. At all. Then the painter ruined it.

The car has a built SR20DET in it. It did 350whp first day we had it on the dyno, with plenty more room.

Thanks!

Everything about cars is that way. You think you know something, and then you learn a little bit more of the tech behind something, and it just makes a million more questions.

As for the powerband, if you think about it, it all kinda makes sense. If you’re driving a technical, short course, like streets of willow, for instance, you want a wildly different powerband, and probably car, than you would if you had to run down the back straight at big willow.

For streets you’ll want power in the low to mid rev range. You don’t need top end, because, unless you’re dumb like me, and drive an 89whp RX7 with like 3 ft-lb of torque, you aren’t likely to be anywhere near top speed, or the top gears. But, because there are tighter, more technically corners (which you’ll slow down more for), you’ll want some lower end power to get you back out of them fast.

If you’re on a much more open, and longer track, where you may reach top speed on a straight, but don’t need to pull the car out of tight corners often, you’ll probably want power in the mid to high rev range. Using my RX7 as an example, I’d run out of power long before I ran out of straight away on the back straight. Not the right car for the job.

For land speed racing, it’s far more important to have top end power, since it’s going to be closer to wide open throttle (mostly), and probably at the end of gearing, all the time. Once you get the car off the line, you aren’t going to slow down until the run is done. In fact, there are a lot of the vehicles there that get bump started off the line with a truck. So because we wanted as much power, at the top of the rev range, we chose a turbo that would be at peak power where we wanted it, which meant it seriously made like 50ft-lb until it didn’t.

The surface is wildly varied and racing gets cancelled often because of the surface conditions. The ever hating shoe person that I am, I had my feet in the ~~sand~~ salt as much as I could. The end and outside edges of the track are where the “crunchies” are. Imagine if salt built itself up naturally to be little peaks and valleys. Stepping on it collapse it to flat. The flattened edge of the racing surface is wet enough to make little snow men out of. I know, I got bored waiting for cars. lol. But it’s relatively thick (disclaimer it’s been losing salt for many years, and there are people trying to bring awareness to restore it. Don’t go out and do dumb shit to it. People have gone out and damaged it more than once. Article here ) actual track surface is pretty well packed. It’s surprisingly cold to the touch too. It’s really weird. If it’s submerged, I actually didn’t walk in that so I can’t for sure but driving on it, it was pretty stable. More like driving on hard packed dirt than loose sand.

But my point is, we’re smart enough as a species to not do that anymore.

Lol. Are we? Maybe it's just my small world but I don't see that at all. I encounter sexism CONSTANTLY. Hell, scroll down to the bottom of the comments on my main reply, it's right there for everyone to see.

The point I am making is that two bodies with similar bone density, muscle mass, testosterone, etc. are going to be physically capable of the same thing, regardless of their genders.

But gender does matter because one gender is predisposed to be bigger, stronger, have more testosterone, and has the ability to be stronger/build muscle more easily. I'd love to agree with you, that in a perfect world, gender didn't matter in brute strength, but it does. All things are not equal out of the box.

Now, as I have clearly proven, brute strength isn't everything, in fact most of the time it only means so much, but it's still there regardless. I think a more accurate statement would be something like "strength only gets you so far, capability is more important"

I mean, if you want to.....

Thanks! Yeah, we do all kinds of stuff.

I don't think you were replying to me, but objectively the average man, of similar size, is going to be stronger than me, in the brute force, or explosive force aspect. It's just an unfortunate fact of human genetics. Men typically have denser bones, ligaments, and tendons, muscle fiber, more muscle mass, and testosterone to help build and maintain all of it. Women are said to be something like 60% as strong as a man on average. HOWEVER, women typically have better stamina, longevity, are better at enduring trauma, etc.

I am by no means frail or weak, and am probably stronger than a lot, but I will never be as strong, or as lean as a man with equal work put toward it.

Ok, the TL;DR is lack of aero, and weight, and we couldn't really fix it, and keep our class.

As I mentioned, we took an SR20 and destroked it to get it under 1500cc. We loving (sometimes) referred to is at the SR15VET or the 150SX. The class also limited aero. We were able to take some of the JDM body pieces off of the Type X Silvia, but we couldn't add any other aero components, and keep our class.

Our best guess, since it happened religiously at the same speed, was that it was an aero issue (mostly). Air would get under it, the car would get light and then spin. Land speed racing is counterintuitive to EVERYTHING you know about racing. Typically, you want a light as possible, and the biggest fattest tires, with relatively low tire pressure, amongst other things. You also typically want a linear power band, with progressive power over the whole range. Land speed racing is it's own beast. You want the skinniest tires you can get to work, and I swear, you overinflate them. You want the car to be heavy too. Our power band was also, basically, nothing, nothing, nothing, nothing ALL OF IT. I can't find the dyno right now, but it really couldn't get out of it's own way, and then when like 6k rpm hit, and the turbo started to get happy there was a MASSIVE power/torque increase.

Some of the old timers came by our pit, in their golf cart, and started chatting with us. They seemed fascinated by our little import, and what we were doing. So they start asking questions. "How much does the car weigh?" "2800lb", or whatever it was. "bullshit, you need to add xxx more pounds" "what kind of tire pressure you running?" we reply "xxxpsi" "bullshit you need to be over 70psi". "did you add ballast?" "no....." "bullshit. you need to talk to xxx guy, he'll tell you where to get some cement" This was really our first foray into land speed racing, and it was definitely a learning experience.

Our next course of action was to add ballast, but the thing about land speed racing is that it takes place on "dry" lake beds (typically). Here is an iconic pic of Challenger II in 2014, when Speed Week got rained out (happens a lot). They had dragged the car all the way to Boneville only for the weekend to ultimately be cancelled. And they had to take pics of the car on the "salt" of course.

The year that we went out, and set the record (same year Challenger II did) a massive storm blew in over the mountain range, as our car was in tech, making sure we could make another pass, on our last day. Well, it was lingering over the mountain range, and heading for us. I've seen what that amount of water can do, and how fast it can do it, so we decided to get the pit packed up and head out, before we were submerged. There were EZ-Ups blowing away, shut flying everywhere, raining, windy, and salt was already getting more soggy (there is only a patch in the middle of the lake that's dry enough to drive on typically. The edges are usually still lake-ish. The day we arrived, I drove the "borrowed" SUV off the end of the road, and onto the salt, but I had to drive through water to get to the pits. The water was up to about the side skirts of a big chevy SUV. When we left the salt on the last day, the water was basically trying to come in the cabin, it was that high, at that point. The whole point of that is that we didn't have time to play with any changes, and the team captain and driver weren't able to continue with the car the following seasons, so it go mothballed.

@Plaid_Kaleidoscope

@techconsulnerd

ha. I'm definitely not that either, but yes.