gravity racing - Subaru Enthusiasts Car Club of the Sierras

bxracer69 · 2005-12-19, 10:35 AM

I saw this, this morning. Its like super soap-box derby. I think it would be cool to put a team together and build a car and compete.

Check it out.

http://www.gravityseries.com

sperry · 2005-12-19, 11:48 AM

See Canyon eh?

MattR · 2005-12-19, 12:06 PM

hmmm

sp00ln · 2005-12-19, 12:26 PM

http://www.gravityseries.com/PDF/XGR...sSlideShow.pdf

You'd get your ass handed to you.

sperry · 2005-12-19, 01:13 PM

What are the rules? Is the car only allowed to roll down the hill, or is the power source from the car only allowed to come from gravity?

If it's the latter, I'd use regenerative braking to charge a capacitor, then reverse the power on corner exit to accelerate.

...or just use a mini-blackhole as an electric power source and run down the hill in a 1000 hp electric rally car. "Powered by gravity"

sperry · 2005-12-19, 01:14 PM

Quote:

Originally Posted by MattR

hmmm

See Canyon is a local road in San Luis Obispo BTW.

bxracer69 · 2005-12-19, 01:49 PM

the car has no engine and can only roll down the hill

car can be 9 ft long 4 ft wide max

and combined weight of car and driver cannot exceed 350 lbs.

sperry · 2005-12-19, 02:52 PM

Quote:

Originally Posted by bxracer69

the car has no engine and can only roll down the hill

car can be 9 ft long 4 ft wide max

and combined weight of car and driver cannot exceed 350 lbs.

Okay, but can it have a flywheel that spins up under braking, then returns the stored energy to the wheels on corner exit?

bxracer69 · 2005-12-19, 02:58 PM

ill try and get the official rules and see

sybir · 2005-12-19, 02:59 PM

Quote:

Originally Posted by bxracer69

and combined weight of car and driver cannot exceed 350 lbs.

Well, F that

Duckie · 2005-12-20, 10:07 PM

HA! I knew my 130 pounds would come in handy.

bxracer69 · 2005-12-20, 10:51 PM

lol

bxracer69 · 2005-12-20, 11:03 PM

I have the official rules:

2006 DESIGNSERIESTM BUILD RULES
Under each required criterion, XGR mandates certain measures.

GRAVITY RACERTM DESIGN RULES
 Weights and Measures
 Max volume of 9' x 4' x 4'
 Max weight 350 lbs. car and driver.

 Stability
 (4 wheels min)

 Performance and Handling
 Performance and handling to negotiate up to 3mile-long courses with sharp turns and road gradients up to 25% Optional for Hill Climb: Ability to climb hills unaided (see Energy requirement below.)

 Energy
 Gravity is the only source of energy to be used for the downhill races. No stored sources prior to race (must be proven to race officials). No driver input externally during the race, downhill or uphill Optional for Hill Climb: Capability to store emission free energy on each downhill run for use only during a return trip uphill as far as possible. Pit crews may be used to reverse direction and position the car at the finish line, but thereafter unaided for the start of the hill climb. All stored energy must be completely dissipated before starting another race downhill.

 Driver Safety
 Driver head protection through the use of a full racing helmet
 Appropriate safety harnesses and/or belts
 Engineered rollover protection (above helmet)
 4-wheel brakes

 Racing Safety
 Mandatory Braking and Steering test to be completed to achieve race eligibility
 Optional: Adequate measures taken to prevent wheel interlock during side-by-side racing

XGR Teams will be required to demonstrate driving, performance, and safety proficiency prior to race day. XGR reserves the right to amend the build rules as conditions demand and maintains the right to preclude teams should there be any question of safety.

sperry · 2005-12-21, 12:00 AM

Sweet, sounds like flywheels and capasitors are green lighted!

bxracer69 · 2005-12-21, 06:33 PM

Optional for Hill Climb: Capability to store emission free energy on each downhill run for use only during a return trip uphill as far as possible.

looks like if a flywheel was put in place, you would have to enter the optional uphill climb.

sperry · 2005-12-21, 06:35 PM

Quote:

Originally Posted by bxracer69

Optional for Hill Climb: Capability to store emission free energy on each downhill run for use only during a return trip uphill as far as possible.

looks like if a flywheel was put in place, you would have to enter the optional uphill climb.

How are they gonna know I'm not using it on the downhill?

bxracer69 · 2005-12-21, 09:05 PM

good point

Ezdno · 2005-12-21, 10:18 PM

I dont think I could build a 100lb car that I could fit my fat ass in.

cody · 2005-12-22, 12:52 PM

Quote:

Originally Posted by Ezdno

I dont think I could build a 100lb car that I could fit my fat ass in.

That may be true...however...there are...other options. Think outside the box.

For example:

2005-12-19, 10:35 AM	#1
bxracer69 EJ22 Real Name: Nick Langkamp Join Date: Aug 2004 Location: On the Road Posts: 384 Car: 2003 Mitsubishi Evo8 Class: SM Snowboarding....Because gravity is cheaper than gas	gravity racing I saw this, this morning. Its like super soap-box derby. I think it would be cool to put a team together and build a car and compete. Check it out. http://www.gravityseries.com __________________ My better is better than your best. My fast smells like french toast. www.langkampracing.com

2005-12-19, 11:48 AM	#2
sperry The Doink Real Name: Scott Join Date: Nov 2002 Location: Portland, OR Posts: 20,335 Car: '09 OBXT, '02 WRX, '96 Miata Class: PDX/TT-6 The way out is through	See Canyon eh? __________________ Is you is, or is you ain't, my con-stit-u-ints?

2005-12-19, 12:06 PM	#3
MattR El Matador Real Name: Matt Join Date: Dec 2002 Location: Reno, NV Posts: 10,660 Car: 2012 Toyota Tacoma Class: ?	hmmm Attached Images __________________ "Dallas..We have a problem.”

2005-12-19, 12:26 PM	#4
sp00ln EJ205 Join Date: May 2003 Location: Reno, NV Posts: 1,196	http://www.gravityseries.com/PDF/XGR...sSlideShow.pdf You'd get your ass handed to you. __________________ Turbo is a decent with modification.

2005-12-19, 01:13 PM	#5
sperry The Doink Real Name: Scott Join Date: Nov 2002 Location: Portland, OR Posts: 20,335 Car: '09 OBXT, '02 WRX, '96 Miata Class: PDX/TT-6 The way out is through	What are the rules? Is the car only allowed to roll down the hill, or is the power source from the car only allowed to come from gravity? If it's the latter, I'd use regenerative braking to charge a capacitor, then reverse the power on corner exit to accelerate. ...or just use a mini-blackhole as an electric power source and run down the hill in a 1000 hp electric rally car. "Powered by gravity" __________________ Is you is, or is you ain't, my con-stit-u-ints?

2005-12-19, 01:49 PM	#7
bxracer69 EJ22 Real Name: Nick Langkamp Join Date: Aug 2004 Location: On the Road Posts: 384 Car: 2003 Mitsubishi Evo8 Class: SM Snowboarding....Because gravity is cheaper than gas	the car has no engine and can only roll down the hill car can be 9 ft long 4 ft wide max and combined weight of car and driver cannot exceed 350 lbs. __________________ My better is better than your best. My fast smells like french toast. www.langkampracing.com

2005-12-19, 02:58 PM	#9
bxracer69 EJ22 Real Name: Nick Langkamp Join Date: Aug 2004 Location: On the Road Posts: 384 Car: 2003 Mitsubishi Evo8 Class: SM Snowboarding....Because gravity is cheaper than gas	ill try and get the official rules and see __________________ My better is better than your best. My fast smells like french toast. www.langkampracing.com

2005-12-20, 10:07 PM	#11
Duckie EJ22 Join Date: Mar 2005 Location: Reno Posts: 309	HA! I knew my 130 pounds would come in handy. __________________ quack

2005-12-20, 10:51 PM	#12
bxracer69 EJ22 Real Name: Nick Langkamp Join Date: Aug 2004 Location: On the Road Posts: 384 Car: 2003 Mitsubishi Evo8 Class: SM Snowboarding....Because gravity is cheaper than gas	lol __________________ My better is better than your best. My fast smells like french toast. www.langkampracing.com

2005-12-20, 11:03 PM	#13
bxracer69 EJ22 Real Name: Nick Langkamp Join Date: Aug 2004 Location: On the Road Posts: 384 Car: 2003 Mitsubishi Evo8 Class: SM Snowboarding....Because gravity is cheaper than gas	I have the official rules: 2006 DESIGNSERIESTM BUILD RULES Under each required criterion, XGR mandates certain measures. GRAVITY RACERTM DESIGN RULES  Weights and Measures  Max volume of 9' x 4' x 4'  Max weight 350 lbs. car and driver.  Stability  (4 wheels min)  Performance and Handling  Performance and handling to negotiate up to 3mile-long courses with sharp turns and road gradients up to 25% Optional for Hill Climb: Ability to climb hills unaided (see Energy requirement below.)  Energy  Gravity is the only source of energy to be used for the downhill races. No stored sources prior to race (must be proven to race officials). No driver input externally during the race, downhill or uphill Optional for Hill Climb: Capability to store emission free energy on each downhill run for use only during a return trip uphill as far as possible. Pit crews may be used to reverse direction and position the car at the finish line, but thereafter unaided for the start of the hill climb. All stored energy must be completely dissipated before starting another race downhill.  Driver Safety  Driver head protection through the use of a full racing helmet  Appropriate safety harnesses and/or belts  Engineered rollover protection (above helmet)  4-wheel brakes  Racing Safety  Mandatory Braking and Steering test to be completed to achieve race eligibility  Optional: Adequate measures taken to prevent wheel interlock during side-by-side racing XGR Teams will be required to demonstrate driving, performance, and safety proficiency prior to race day. XGR reserves the right to amend the build rules as conditions demand and maintains the right to preclude teams should there be any question of safety. __________________ My better is better than your best. My fast smells like french toast. www.langkampracing.com

2005-12-21, 12:00 AM	#14
sperry The Doink Real Name: Scott Join Date: Nov 2002 Location: Portland, OR Posts: 20,335 Car: '09 OBXT, '02 WRX, '96 Miata Class: PDX/TT-6 The way out is through	Sweet, sounds like flywheels and capasitors are green lighted! __________________ Is you is, or is you ain't, my con-stit-u-ints?

2005-12-21, 06:33 PM	#15
bxracer69 EJ22 Real Name: Nick Langkamp Join Date: Aug 2004 Location: On the Road Posts: 384 Car: 2003 Mitsubishi Evo8 Class: SM Snowboarding....Because gravity is cheaper than gas	Optional for Hill Climb: Capability to store emission free energy on each downhill run for use only during a return trip uphill as far as possible. looks like if a flywheel was put in place, you would have to enter the optional uphill climb. __________________ My better is better than your best. My fast smells like french toast. www.langkampracing.com

2005-12-21, 09:05 PM	#17
bxracer69 EJ22 Real Name: Nick Langkamp Join Date: Aug 2004 Location: On the Road Posts: 384 Car: 2003 Mitsubishi Evo8 Class: SM Snowboarding....Because gravity is cheaper than gas	good point __________________ My better is better than your best. My fast smells like french toast. www.langkampracing.com

2005-12-21, 10:18 PM	#18
Ezdno EJ251 Real Name: Dean W. Join Date: Nov 2005 Location: So close to hell you can see Sparks! Posts: 541 Car: 1992 F250 1T Monster Class: none They were all dead when I got here!	I dont think I could build a 100lb car that I could fit my fat ass in. __________________ Don't interupt me while I am ignoring you!

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