What SCCA Class for a BEC 7?

[Spaz]

So what class do people run in?

 

http://www.moutons.org/sccasolo/Lists/2006/stockm.html#Lotus

 

A Lotus 7 should run in CS (C Stock) with Mazda Miata Miata, Pontiac Solstice, Porsche 914, Saturn Sky, and Toyota MR-2 Supercharged.

 

This is what I ran in this past weekend but people gave me a very hard time.

 

Or maybe it should be ASP (A Street Prepared) with Vipers, Ferrari 355 360 Modena Dino 206 & 246, MINI Cooper S JCW (works) package, Mazda RX-7 Turbo ('93+), Porsche 911 AWD Turbo and catch-all Sports cars over 2 liters not otherwise classified.

 

What SCCA class should a BEC 7 be in?

[West7se]

This has been an issue over here as well, so much so that the champoinships I used to do split them all up.

 

Separate classes for :

 

Spaceframed kitcars with car engines - further split down into engine sizes.

 

Spaceframed kitcars with bike engines - these generally have one class only ( but can be split up depending on who wrote the rules for that championship).

 

Based on the link you provided its a tough choise, can you not contact the championship co-ordinator who might be able to help?.

 

Rich

[slngsht]

From the SCCA Solo Rulebook:

http://www.scca.com/documents/Solo_Rules/2009_Solo_Rules.pdf page 218

You will probably fall in BMod depending on your engine/weight.

 

Modified Class A

Cars with a minimum weight of 900 lbs, and a minimum 72 inch

wheelbase, plus Formula SAE as specified in Section 18.5. GCR legal

Formula S and GCR-legal ASR’s may compete in this class.

Modified Class B

All Formula Cars or Sports Racers legal under the current year GCR,

unless specifically classed elsewhere, with the following exceptions

(weights shown are with driver):

A. Spec tires are not required.

B. Minimum wheelbase of 80 inches.

C. Sports Racers and All Open Wheel Cars Including Formula

Atlantics

1. May use any automotive based 2-valve motor up to 1300cc,

any 2-stroke motor up to 900cc, any 4- or more valve motor

up to 1005cc. Minimum weight: 1020 lbs

2. May use any 2-valve automotive-based production engines

up to 1615cc. Minimum Weight: 1110 lbs

3. May use any four- or more valve engine up to 1615cc. Any 2-

stroke up to 1300cc, Mazda 12A rotary with any porting, any

carburetion. May use fuel injection without weight penalty as

required by the GCR. Minimum weight: 1180 lbs

4. May use any naturally aspirated engine up to 3000cc. Minimum

weight: 1285 lbs

5. Minimum rim width: none.

6. Maximum allowed rim width: 15 inches.

D. Formula 2000, classed in Formula Continental per FCS

1. Minimum weight 1090 lbs

2. Rim width is unrestricted.

3. Airfoil maximum size per Formula Atlantic rules.

E. Aerodynamic restrictions for Sports Racers:

The total area when viewed from the top of all wings shall not

exceed 8 square feet. The current GCR CSR and DSR 45% flat

219

bottom rule and all other aero specifications shall also apply to

ASR. Production cars as recognized in DM/EM running in BM as

sports racers must have the tires as viewed from above at least

½ covered. Cycle fenders may be used to comply with a sports

racer classification.

F. Aerodynamic restrictions for Formula Atlantic (all open wheel in

BM) shall follow the current GCR, no additional Solo wing limitations.

G. Minimum weights for FSCCCA and SRSCCA, prepared as specified

by the GCR (lbs):

FSCCA: 1265

SRSCCA: 1365

H. Formula S - Must weigh appropriate Solo DSR weight if engine

size is within DSR class limitations. FS shall run to the appropriate

Formula Atlantic rules if engine is larger than allowed in

DSR. All cars must prepare to Formula Atlantic aerodynamic

rules.

Modified Class C

Modified Class C GCR legal SR, SRF, FF1600, S2000. Within the limitations

of the GCR, additional frame bracing, suspension and steering changes,

relocation of ancillary components (radiators, batteries, etc.) and their

associated mounting brackets is permitted. Nothing in these rules is to be

construed as overruling any GCR construction requirements or limitations,

except for those safety items which the Solo Rules do not require. The

purpose of these rules is to maintain the value of these cars for Club

Racing and therefore their market value, and to prevent special Solo-only

Formula Fords.

Exceptions to the GCR for all cars in this class:

A. Spec tire requirements do not apply.

B. For S2000, the minimum weight with driver is 1280 lbs

FF1600 and S2000 are open only to ‘series produced’ cars. Only cars

produced by the following manufacturers are eligible for FF1600 in this

class: ADF, Alexis, Caldwell, Citation, Crossle, Dulon, Eagle, Elden,

Forsgrini, Gemini, Hawke, Konig-Heath, LeGrand, Lola, Lotus, March,

Merlyn, Mondiale, PRS, Reynard, Royale, Swift, Tiga, Titan, Van Diemen,

Winkleman and Zink. Only cars produced by the following manufacturers

are eligible for S2000 in this class: Bobsy, Chevron, Daedalus, KBHMariah,

Lola, March-Apache, Reynard, Royale, Shrike, Swift, and Tiga.

The SEB may add to this list at any time, effective upon notification of the

membership.

220

Modified Class D

Modified Production and GT cars with engine displacement 2000cc and under,

as follows:

A. The 12A Mazda and 13 B Rotary engines are permitted in D Modified

with the following restrictions:

1. No replacement of cast iron engine case segments with aluminum.

2. On the 12A engine, only side and rotor housings from 1974 to

1986 engines shall be used.

3. No replacement of 12A or 13B sections such as side plates

with those from other series engines, i.e. Renesis type parts.

4. On 12A engines, no peripheral porting or J-porting is allowed.

Bridge porting that does not cut into the water o-ring is permitted.

On 13B engines, 4 and 6-port: Maximum porting

permitted is street porting. No bridge porting, J-Porting, or

peripheral porting.

B. Weight vs. Displacement

All listed minimum weights are with driver.

Piston engines up to & including 1800 cc 1280 lbs

12A rotary engines w/ porting restriction 1280 lbs

Piston engines 1801 to 2000 cc 1380 lbs

13B rotary engines w/ porting restriction 1380 lbs

C. Performance Adjustments

AWD Add 200 lbs

Modified Tub Add 40 lbs

D. Weight Bias Adjustment

Bias determined by weighing with driver sitting in the driver’s

seat.

RWD w/ less than 51% of the weight

on the drive wheels Deduct 35 lbs

FWD Deduct 35 lbs

AWD Not affected

Modified Class E

Modified Production and GT cars as follows:

A. Weight vs. Displacement

All listed minimum weights are with driver.

221

Piston engines up to & including 3200 cc OHC 1700 lbs.

Piston engines up to & including

4500 cc pushrod/OHV 1700 lbs.

2-rotor rotary engines w/ unrestricted porting 1700 lbs.

Piston engines unlimited displacement 1800 lbs.

3-rotor rotary engines w/ unrestricted porting 1800 lbs.

B. Performance Adjustments

AWD Add 300 lbs.

Modified Tub Add 50 lbs

C. Weight Bias Adjustment

Bias determined by weighing with driver sitting in the driver’s

seat.

RWD w/ less than 51% of the weight

on the drive wheels Deduct 50 lbs

FWD Deduct 50 lbs

Modified Class F

A. GCR legal Formula 500 (F5) with the following exceptions (listed

weights are with driver):

1. F5 cars manufactured prior to the current requirement for

rubber vibration isolation need not conform to F5 specification

E.3.C.

2. F5 cars manufactured prior to January 1, 1990 need not comply

with crushable structures as defined in Section E.7 of the

current FCS.

3. F5 cars manufactured prior to January 1, 1990 which utilize a

73” wheelbase may compete even though the driver’s feet

extend beyond the front edge of the wheel rims.

4. Minimum weights: wheelbase greater than 73”, 750 lbs;

wheelbase of 73”, 725 lbs. Add 50 lbs for AMW and Rotax

494 (RAVE or non-RAVE) and 493 engines.

5. Rotax powered cars are permitted to use 34 or 38mm Mikuni

roundslide carburetors. AMW powered cars may use either the

38 mm AMW carburetors or update to the 38 mm Mikuni

roundslide carburetors. In order to accommodate the use of

the approved Mikuni VM 38mm sidedraft carburetors on the

AMW engine, the use of the AMW intake manifold (part

#2736-00) is permitted, as are the AMW rubber attachment

boots, gaskets, and or hardware required for the use of this

222

manifold.

Competitors using the Rotax 494 RAVE engine are required to

use the 494 non-RAVE rotary valve: Rotax part #924509 or

924508, Ski Doo prefix 420, 147 degree designation that

opens @ 135 degrees BTDC and closes @ 64 degrees ATDC in

their engine. RAVE valves shall be blocked in the ‘full open’

position or left as delivered. No other alterations are permitted.

494 RAVE and non-RAVE parts may not be interchanged

between the two engines unless specifically noted.

6. Competitors utilizing the 493 Rotax engine may leave the

manufacturer’s specified intake balance tubes in place or, at

their option, completely remove the tubes and make the

alterations required to plug the remaining holes. No unnecessary

alterations are permitted if the competitor chooses to

remove the tubes. The 493 Rotax engine is limited to a Y

pipe exhaust manifold and single expansion chamber, as are

the 494 Rotax and AMW engines.

7. All F440/500 engines may use any water thermostat. It may

be modified or completely removed as necessary to aid water

cooling. The water bypass may be blocked and alternate

water cooling plumbing may be used.

8. F440/500 cars in class F Modified are not required in Solo to

have the sidepods now mandated by Club Racing, if they

were manufactured prior to the year in which that requirement

was added to the GCR (1984). Sidepods may not be

removed from a car which was originally manufactured with

them. The measurements for the height of, the maximum

width of (bodywork), and the distance from the tires of

sidepods as specified in the GCR, Bodywork E.9 2nd paragraph,

shall have an allowance from the GCR of +/- one inch.

It is the intent of this allowance to maintain the ability of the

sidepod(s) to continue to hold such items as fuel tanks, battery,

and radiator(s), but not to allow sidepods to be used for

ground effects to achieve aerodynamic downforce on the

vehicle.

[Spaz]

Ouch, 3,000CC and I am only running 900CC but my weight is in line. B-Mod it is. Looks like a 7 does not fit into a class very well.

[slngsht]

Ouch, 3,000CC and I am only running 900CC but my weight is in line. B-Mod it is. Looks like a 7 does not fit into a class very well.

 

 

This was discussed in length here: http://www.usa7s.com/vb/showthread.php?t=267

[Spaz]

This was discussed in length here: http://www.usa7s.com/vb/showthread.php?t=267

 

Thanks, I did not think to look back at a 3 year old post.

[slngsht]

Thanks, I did not think to look back at a 3 year old post.

no worries... wasn't implying anything. it was quite a heated discussion back then.

[Spaz]

no worries... wasn't implying anything. it was quite a heated discussion back then.

 

WOW that was a good read.

 

My class for Auto-X is HF (Have Fun)!

 

But for all the Auto-x nuts who live week to week with their times, I guess B-Mod. It's not like I am going to be taking first at nationals or anything.

[slngsht]

that's where I am with autox too... I just wanna run.

[West7se]

Yes same here, 10 pages of great posts.

 

as I said already, over here the seven has always had issues fitting into the correct class, even a standard Lotus 7 series one would have to think carefully about where he put himself, without fear of the dreaded `protest`, and infact would for the sake of competitiveness end up in a `classic class` which is based on a handicap system rather than racing on scratch times.

 

Which is why now most of our series dont mention `sevens` but rather spaceframed kitcars. This then opens the entry up to other `homebuilt` and cottage industry Kitcar makers.

 

Rich

[Boxologist]

that thread was awesome. Del Long shows up!

 

BM for a se7en that is a BEC. It must obey all rules of D/E Mod though. So no aero allowances or off to A mod.

 

CS is for LOTUS 7/7A ( i think maxed out at 1.0L) is CS, then ASP, and to DP (7/7A and Super 7 up to 1.5L). I have 2009 Solo regs on my desk waiting to go into the region's equipment trailer.

 

were stuck with the cool kids in modified

[Boxologist]

WOW that was a good read.

 

My class for Auto-X is HF (Have Fun)!

 

But for all the Auto-x nuts who live week to week with their times, I guess B-Mod. It's not like I am going to be taking first at nationals or anything.

 

find Jeff underwood's vids from his BEC 7. total awesomess. R1Seven iirc?

[DeanG]

Having a competitive autocross Lotus or a Se7en is tough with the SCCA rules. Luckily I run for fun when I run.

 

With the Elan I am in BS with the M3, Corvette ('63-'82), some 911 models...

 

With the M100 I end up in ASP because it is "not eligible for Stock Category"

 

It will try to do an occasional autocross with the 7. I might event have a chance to do OK if it is a tight course and I driver precisely. Another set of tires and rims would certainly help out thought.

[Kitcat]

I always ran for fun. Regardless of car. my lack of talent would invariably overwhelm whatever advantage the car I was driving had:)!

[athens7]

D Mod for me. I never really understood that there was any other option for my car. I run the stock Avon ZZ3s (until they wear out, then Toyo R1Rs or Bridgestone RE-11s) on a Roadsport with a full windshield. Hell, the fastest autocross cars in Atlanta are 20 year old Civics, so I just like to have a good time and drive my car in a way that isn't possible on public roads. It does seem, though, that it is possible to field a competitive 7 in D Mod nationally; last year's National Champion drove something that looked like a 7.

[Spaz]

For road racing:

 

Super Production Under 2.5 Liter (SPU) in SCCA

Super Unlimited (SU3) in NASA.

[Spaz]

Right from the http://www.nasaproracing.com/proracing/su.html

 

Super Unlimited is a class that encompasses all types of racecars that do not fit in a particular NASA class. This class is home for racecars that are built specifically to each owner's taste and budget. As a result, this class is known for hosting big-dollar equipment that is a thrill to see on the track

 

Not the best class for a "locost" 7.