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modernbeat
modernbeat HalfDork
9/15/10 2:44 p.m.
Jensenman wrote: Hey, Per: how much trouble would it be to build an air shifter for that beast?

Class rules require a mechanical shift linkage. So no air shifters or electric solenoid shifters. Some crafty FSAE students designed a slick sequential scissor-shifter that I've seen on two cars. Tommy has one on the Dragon.

Per Schroeder
Per Schroeder Technical Editor/Advertising Director
9/15/10 2:55 p.m.

Really? I didn't realize the rules prohibited air shifters---there have been BMod cars past and present that have them. interesting.

oh, that was my third run, slower than the second by about .5 seconds.

Per Schroeder
Per Schroeder Technical Editor/Advertising Director
9/15/10 2:57 p.m.

Oh, and other than possibly moving the clutch to be hand operated near the shifter, I don't see any real advantage to air shifting---It's pretty effing quick to shift now. no clutch and just a little lift to upshift.

wbjones
wbjones Dork
9/15/10 3:12 p.m.

dang that's quick.. guess that's why I a-x a STS CRX ... things just happen way to fast for an old fard like me

mtn
mtn SuperDork
9/15/10 3:25 p.m.
sachilles wrote: In reply to mtn: The problem is you probably keep score. Stop caring about how well you play and it becomes a lot more fun. Seriously. Also it helps to play with people that are much worse than you. I've played for about 25 years, and I know I enjoy it least when I care about the score.

Nope, don't keep score anymore. And I'm not bad, the three times I did keep score I shot 30 through seven, 85, and 34 through 8. I just don't enjoy it; but if I stop playing, I find myself missing it. Its seriously like a bad addiction.

As for the drinking, I do enjoy it when I can but its hard to do when you're under 21, and golfing at places that strictly prohibit it.

Anywho, enough with the threadjack.

Awesome video, and I lol'd at the ending

mad_machine
mad_machine GRM+ Memberand SuperDork
9/15/10 4:20 p.m.

well, I can say without a doubt that the LeGrand is beyond my abilities

modernbeat
modernbeat HalfDork
9/15/10 4:52 p.m.
Per Schroeder wrote: Really? I didn't realize the rules prohibited air shifters---there have been BMod cars past and present that have them. interesting. oh, that was my third run, slower than the second by about .5 seconds.

Sorry, I don't know where I dredged that up. I went back to the current rulebook. Per is right. Any shifter is allowed.

Jensenman
Jensenman SuperDork
9/15/10 7:06 p.m.

The reason I was thinking air shifter is the ones designed for drag bikes include an ignition kill, allowing for up/down shifts under power. With F1-style paddles or buttons on the wheel, it could be real handy in the right conditions (think hillclimbs).

kevlarcorolla
kevlarcorolla New Reader
9/15/10 7:29 p.m.

In reply to Jensenman:

Search on the dsr forum,guys on there have built air shifters using paint ball parts.I did a bunch of research for both air and electric shifting for mine,for the air set-up there's a bunch that can go wrong including simply running out of pressure in the on board tank you need to carry around.For electric it seems that the solenoid can go awry due to excess heat and vibration,plus for both shifters finding neutral is damn near impossible without a manual set-up to work with it. After all that I went with a very simple,reliable and cheap marine push/pull cable.

Oh yeah with the cable I get to make cool noises with throttle blips on the downshifts,with the other set-ups thats not going to work and with the straight gears in the bike a quick no rev match downshift is pretty crunchy and kinda hard on the rest of the driveline imo not to mention chassis upsetting if done at the wrong time.

JoeyM
JoeyM Dork
9/15/10 7:40 p.m.
Tom Heath wrote: Peep the latest project car update to ride along with Per at the 2010 Solo National Championships. project car update page.

Needs more JG on a segway.....Oh, and light bulbs.

Jensenman
Jensenman SuperDork
9/15/10 7:50 p.m.

I figured run an air shifter but keep a manual for backup. From what I have seen there are setups available with onboard electric compressors so running out of air might not be a problem, although from a weight standpoint I'd probably go with a 'total loss' system. That's how we used to do dirt bike ignitions, they ran for an hour or so off of a lantern battery. The tradeoff was you could remove the big heavy ignition rotor.

Mikey52_1
Mikey52_1 Reader
9/15/10 7:52 p.m.

Where's the stereo and a/c? I watched it 3 times and couldn't see them ANYwhere... Seriously, VERY cool. Now I want a LeGrand...off to CL land, then! Tally-ho!

kevlarcorolla
kevlarcorolla New Reader
9/15/10 8:02 p.m.

In reply to Jensenman:

Up to you but the new cable costs about $40,weighs less than a pound and the chances of it failing is minimal so......

Platinum90
Platinum90 SuperDork
9/15/10 8:34 p.m.

How heavy is your battery? Maybe you need one of these!

Slyp_Dawg
Slyp_Dawg GRM+ Memberand Reader
9/15/10 8:34 p.m.

find a way to rig up a WRC-style single paddle shifter? wouldn't be too awful hard I don't think, even if you had a sequential-shift knob to make finding neutral easier. hell, marine push-pull cable from the paddle to the shifter, then use linkages to connect the shifter to the gearbox? that would make finding neutral a bit easier I think. or... linkage from the paddle to the shift knob to the gearbox... could be done, would be a bit heavier and more complex but it could be done

z31maniac
z31maniac SuperDork
9/15/10 9:40 p.m.
Jensenman wrote: I figured run an air shifter but keep a manual for backup. From what I have seen there are setups available with onboard electric compressors so running out of air might not be a problem, although from a weight standpoint I'd probably go with a 'total loss' system. That's how we used to do dirt bike ignitions, they ran for an hour or so off of a lantern battery. The tradeoff was you could remove the big heavy ignition rotor.

I think that's what the drag and some road race guys do using the popular Sportbike tuning box that I seem to have forgotten the name of.

Even though I used one.....

plance1
plance1 Dork
9/15/10 9:46 p.m.

looked a little slow to me...

Per Schroeder
Per Schroeder Technical Editor/Advertising Director
9/16/10 5:15 a.m.

It's now got a 2 lb. Lithium battery in it from Braille. Works great.

As I've mentioned in the past, I'm 20lbs over the minimum weight and don't need ballast as the minimum includes the driver and I'm 220 lbs. With my wife in the car, we need 60lbs of ballast...plus a little extra for a margin of comfort.

Platinum90 wrote: How heavy is your battery? Maybe you need one of these!
Per Schroeder
Per Schroeder Technical Editor/Advertising Director
9/16/10 8:24 a.m.

Oh, and let me know if any of you are looking for similar cars. They range in price from about 5k for projects to about 20k for cars that are complete...but none of them typically have the differential and engine updates that ours now has. "Turn-key" fast BMod cars don't really exist for sale, as there's only a handful out there.

BTW, My dad just put a deposit on that 5k project. He's planning on making a more conservative BMod car that's not quite so fast (but still fast enough to scare the wee out of you.)

z31maniac
z31maniac SuperDork
9/16/10 8:36 a.m.

Per, for the next LeGrand vid, add in some telemetry/GPS data (if your recording it). I think would add even more excitement to the already awesome vid.

kevlarcorolla
kevlarcorolla New Reader
9/16/10 3:12 p.m.

In reply to Slyp_Dawg:

Power commander quick shift is likely the name your trying to remember.

4eyes
4eyes HalfDork
9/16/10 10:46 p.m.

I'm amazed how well it putts around at low speed after the run. And how huge a course looks on video, it looks like it would be much easier to get lost than it is.

Per Schroeder
Per Schroeder Technical Editor/Advertising Director
9/17/10 3:57 a.m.

The new fuel injected motor is exceptionally tractable. It pulls away clean from just over idle w/o any real issues. It is, really, just a nearly stock bike engine.

bravenrace
bravenrace Dork
9/17/10 6:14 a.m.

Maybe I missed it, but what camera was used for that video?

HiTempguy
HiTempguy HalfDork
9/17/10 7:40 a.m.
Per Schroeder wrote: making a more conservative BMod car

Does not compute. Isn't BMod anything BUT conservative?

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