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 :p

[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.