Until my rule book(s) arrive I'd be interested to know if aero-steering is allowed in lieu of angular movement of tire/wheels for unlimited streamliners? If wheel steering is required is there as distinction between the steering axle...example: is rear steering allowed; also is there a minimum angle steering wheel(s) must turn? Thanks...
Aero steering will never fly. For so many reasons. Rear steering would need a lot of demonstration, I bet, Has not worked well in the past. Is this for a FWD car? Corvair powered? Most 'liners don't turn much.
Though I didn't find the rule with quick look, I think rear steer is prohibited. Rule 3L says in part: " Steering shall be assured by at least two (2) front wheels."
Quote from: Simspeed on April 15, 2019, 02:45:33 AM
Until my rule book(s) arrive I'd be interested to know if aero-steering is allowed in lieu of angular movement of tire/wheels for unlimited streamliners?
Breedlove tried it with the Spirit of America 3 wheeler. It didn't work for him.
Some one in the past had a rear steer car. He said it was so bad that the next pass would be straight to the dumpster.
DW
Maybe I'm missing something, but I think about the times I've damn near flipped forklifts , and I simply can't imagine why anybody would so much as proffer the idea of rear wheel steering in an LSR vehicle.
I figure it was because they saw the advantages of not having the complexity of steering a front-wheel drive.
Playing Devil's advocate here..... But there was a rear steer LSR car that went 763 MPH. :evil:
Of course it did have computers to help with the control. 8-)
Quote from: Dynoroom on April 15, 2019, 03:49:41 PM
Playing Devil's advocate here..... But there was a rear steer LSR car that went 763 MPH. :evil:
Of course it did have computers to help with the control. 8-)
It was not running at Speed Week.
Regards, Neil Tucson, AZ
Nope, it's sonic wave might have leveled Floating Mountain as it passed by..................... :-D :-D 8-) :roll:
Thanks everyone for your responses. Rear steering is not something I'm advocating for, just asking to learn all my options. My body design has such a narrow front there's no room for conventional steering. The max I can eek out with M/T 24.5x7.5x16 tires/wheels is 6 degrees lock to lock from a leading pivot wheel frame section. I'm designing a fore and aft front wheel arrangement similar to Speed Demon and others. I'm thinking at a modest speed (say above 150 mph) a vertical nose fin should provide adequate surface area to control L/R steering movement of the liner. Anyone ever tried that? Thanks...
A vertical fin on the front, moveable or not, moves the center of pressure forward, a circumstance that is undesirable.
Quote from: Simspeed on April 16, 2019, 03:27:10 PM
Thanks everyone for your responses. Rear steering is not something I'm advocating for, just asking to learn all my options. My body design has such a narrow front there's no room for conventional steering. The max I can eek out with M/T 24.5x7.5x16 tires/wheels is 6 degrees lock to lock from a leading pivot wheel frame section. I'm designing a fore and aft front wheel arrangement similar to Speed Demon and others. I'm thinking at a modest speed (say above 150 mph) a vertical nose fin should provide adequate surface area to control L/R steering movement of the liner. Anyone ever tried that? Thanks...
6 degrees is more than enough. Ask Marlo, Danny Thompson, Nish, Vesco...
Find Jack Costella on Google and ask him about narrow fronts that steer up to 400 mph. And also slowly when rolling up to the start line. Very helpful.
The Vesco liner has 6 degrees of steering 3 each way.. A lot of cars had to slow down their steering after a few runs as they don't want quick steer.
Thanks Glen and RichFox...that's good info to know. Now I don't feel so bad with the limited steering my design allows.
Of course you will need to work on your 30 point turn arounds... :-D
Well I can tell ya Rear Wheel steering is a bit of a problem.... although I know there was someone running it experimentally at El Mirage... one of the SCTA club officers if I remember....
But we tried it in 1978.... that's the year Marty crashed it about 1/4 mile out... maybe 55 MPH... fell over and slid forever according to Marty.... about 10 seconds :roll:
Fixed it, changed from side by side to inline rear wheels...
In 1979 Marty said he wasn't driving it again, :-o so Johnboy drove.... he made it about the same distance.... :|
It didn't just fall over... it jumped in the air and rolled a half dozen times before it hit the ground. We were politely asked to never bring it back... Then they wrote a rule... Cars steer by 2 front wheels
In 1984 that liner was converted to a Lakester... one we raced successfully till 2017 when Johnboy again crashed it... but this time at 190... Oh sure it suffered a half a dozen spins over the years... but the last count was 10 records still in the book when it met its demise.
Don't do RWS :cheers:
At the Salt Talks in 2006 (I think) I asked Andy Green how he ever got used to the rear steering on Thrust. He said "I never did really."
Regards, Neil Tucson, AZ