Hawt Because Racecar
- Thread starter Mr. Argumentor
- Start date
Yup.
Suzuki LTR450 engine and trans.
Last year we bored and stroked it to 540 CC, this year we are looking at stroke as well as turbo. The cylinder itself was too expensive to do that regularly. The benefit was definitely there, but it wasn't cost effective enough to get all the spare engines setup like that as well.
Suzuki LTR450 engine and trans.
Last year we bored and stroked it to 540 CC, this year we are looking at stroke as well as turbo. The cylinder itself was too expensive to do that regularly. The benefit was definitely there, but it wasn't cost effective enough to get all the spare engines setup like that as well.
Jehannum
Puts the "pro" in procrastination
Yup. Stock HP was about 50ish, last year we were able to get back to that (54HP on the dyno) despite using having to run a 20mm restrictor between the throttle plate and the intake port.
Doesn't sound like much, but when you've got a race-ready weight of about 347lbs without the driver, you're sitting pretty, as it was last year we were the fastest single cylinder at Lincoln (as I think I've said before?)
Doesn't sound like much, but when you've got a race-ready weight of about 347lbs without the driver, you're sitting pretty, as it was last year we were the fastest single cylinder at Lincoln (as I think I've said before?)
Trying out a couple new tire combos in testing netted us (I think) half a second in our pure acceleration, its unclear if we can get away with switching tire sizes so drastically though.
Karts are the shit.We partnered with Andersen RacePark in Palmetto. They're going to help us with driver training, choosing the drivers, suspension tuning, and all sorts of other related things.
As a getting-to-know you, they invited us down for a 75 lap endurance race. Everyone was divided into ten two-person teams, given some brief safety stuff and a 30 minute practise session.
Almost everyone spun out once or twice, there was bumping and rubbing to try and push people out of the way. I ran one of the guys straight into the barrier. It was great.
My team-mate and I came in 8th, but our times were nice and consistent
IDK if you'll ever get time, but take that thing autocrossing.
The school I used to go to did the Baja which was neat, nowhere near the money for FSAE though.
:sigh:
We use a mild steel reluctor wheel and a hall effect sensor for wheel speed. Gives us MPH, let's us program traction control, etc etc etc
Normally we fasten it to our wheel hubs with an aluminum bolt so there's no chance it can be picked up by the sensor.
The other guys doing the suspension have, effectively, checked out from the team. They show up, they work, but they don't care.
They put in a stainless steel bolt, then insisted it wouldn't do anything.
I powered an old sensor and held up to a bare bolt and it pinged a reading.
I shouldn't be the one that knows electronics.
I'm tired
We use a mild steel reluctor wheel and a hall effect sensor for wheel speed. Gives us MPH, let's us program traction control, etc etc etc
Normally we fasten it to our wheel hubs with an aluminum bolt so there's no chance it can be picked up by the sensor.
The other guys doing the suspension have, effectively, checked out from the team. They show up, they work, but they don't care.
They put in a stainless steel bolt, then insisted it wouldn't do anything.
I powered an old sensor and held up to a bare bolt and it pinged a reading.
I shouldn't be the one that knows electronics.
I'm tired
Darth Handsome
Not Nearly as Handsome as Advertised.
I think I've mentioned that we have to run a restrictor for comp. We have traditionally had a full aluminum one made with the appropriate geometries and such to ensure max flow. This sucks up a lot of our manufacturing/machining budget from our sponsors.
This year we hit upon the idea of making a solid center section and bonding carbon fiber ends to the aluminum piece. Now instead of having our machinists attempt to make a piece 8-10 inches long with a wall thickness of 80 thou we can have them churn out two or three that are only a couple inches, go down to 40 thou, and include the dall slot which gives us a little bit of flow through black magic.
Jehannum
Puts the "pro" in procrastination
Isn't there a cheaty way to bypass the restrictor now that you've got a turbocharger?
Look up Toyota's rally "restrictor".
Look up Toyota's rally "restrictor".
You seen that rally Toyota restrictor cheat before?
No pockets! #wrongthread
There are several ways to cheat with the intake system, unfortunately the restrictor and associated parts are pretty much the main thing the judges look for.
Its a weird competition in some ways. All the tech inspectors and scrutineers are volunteers. You honestly don't know if the person(s) you get has their head on straight or up their ass.
My first year we got told that we had to have a chain guard on our car. We looked at the guy, said "We have a chain guard. Its a large and very obvious one, right there."
"No no no, you need one for the front of the chain."
"Since when?"
"Uhh... Rule has been in place for... 4 years? Says you need something to prevent chain from hitting driver in case it comes loose."
"How come we haven't been told this before? How come previous people accepted the fact that the engine case, fuel tank, firewall, etc etc etc were enough?"
"
, but you need a chain guard."
So we made one. They then passed us. Most teams leave two or three small things for the inspectors to find, makes em happy and you know what they are going in.
Wanna review the rules and see if anything sticks out?
Http://students.sae.org/cds/formulaseries/rules/2015-16_fsae_rules.pdf
Its a weird competition in some ways. All the tech inspectors and scrutineers are volunteers. You honestly don't know if the person(s) you get has their head on straight or up their ass.
My first year we got told that we had to have a chain guard on our car. We looked at the guy, said "We have a chain guard. Its a large and very obvious one, right there."
"No no no, you need one for the front of the chain."
"Since when?"
"Uhh... Rule has been in place for... 4 years? Says you need something to prevent chain from hitting driver in case it comes loose."
"How come we haven't been told this before? How come previous people accepted the fact that the engine case, fuel tank, firewall, etc etc etc were enough?"
"
, but you need a chain guard."So we made one. They then passed us. Most teams leave two or three small things for the inspectors to find, makes em happy and you know what they are going in.
Wanna review the rules and see if anything sticks out?
Http://students.sae.org/cds/formulaseries/rules/2015-16_fsae_rules.pdf
http://crasstalk.com/2011/03/cheatins-still-winnin-the-story-of-toyota-racings-best-cheat-ever/There are several ways to cheat with the intake system, unfortunately the restrictor and associated parts are pretty much the main thing the judges look for.
Its a weird competition in some ways. All the tech inspectors and scrutineers are volunteers. You honestly don't know if the person(s) you get has their head on straight or up their ass.
My first year we got told that we had to have a chain guard on our car. We looked at the guy, said "We have a chain guard. Its a large and very obvious one, right there."
"No no no, you need one for the front of the chain."
"Since when?"
"Uhh... Rule has been in place for... 4 years? Says you need something to prevent chain from hitting driver in case it comes loose."
"How come we haven't been told this before? How come previous people accepted the fact that the engine case, fuel tank, firewall, etc etc etc were enough?"
"
So we made one. They then passed us. Most teams leave two or three small things for the inspectors to find, makes em happy and you know what they are going in.
Wanna review the rules and see if anything sticks out?
Http://students.sae.org/cds/formulaseries/rules/2015-16_fsae_rules.pdf
Not saying it will work, infamous.
FSAE is chain drive? You guys go against Pitt or CMU?
Speaking of cheating. First year I went, one of the top 10 teams had two radiators, each the size of our radiator. On these radiators they had either two or three fans the same size as the one fan we ran on the one radiator we ran. These radiators were parallel to the ground and had ducting that meandered all over and dropped almost to the ground, but not all the way as that is not allowed. However, when running you could hear a set of air solenoids pop something open, and you could see the car squat.
Now, the sort of active aero that the Brabham Fan Car used is not allowable. But if you need to do cooling and you can justify your design...
Now, the sort of active aero that the Brabham Fan Car used is not allowable. But if you need to do cooling and you can justify your design...
Its whatever drive you feel like making. One of the Austrian teams designed an integrated block/transmission/turbo housing based off a Mercedes engine, BMW bike tranny, and I think a Quaiffe differential. All of that was internal.
Yet another team took a CBR600, mounted it longitudinally, and machined an adapter off the crank. Said in the winter they adapt an AWD system to the front axle and run around in the ice and snow (Canadians, eh? What hosers)
But we run chain.
My last comp we ran against Pitt at 1 or more of the events. Where/what is CMU? There are a lot of acronyms in the college world