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I've been through the GCR and the Solo Rules and haven't found anything beyond the 8 square feet total aero and how the computation is to be done.  Is there a limitation on how far a splitter and front wing can extend beyond the frontmost bodywork on a B Mod LeGrand?  Our car has a flat nose that tapers back to the wheel wells on both sides (octagonal).

Thanks in advance,

Mike

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A Freudian slip is when you say one thing but mean your mother.

Mike, The splitter rules follow the SR rules. I don't think there is a limit on how much the splitter extends forward, but there is a limit on how much it extends to the sides past the tires:

Width – The maximum width shall not exceed 221cm (87
inches) including all aerodynamic devices. However, no
portion shall extend more than 10cm (3.9 inches) beyond
a plane tangent to the outer face of the front and rear
wheels with tires. The minimum body width between the
front and rear wheels shall not extend inwards beyond a
vertical plane connecting the centerlines of the front and
rear tires.

As far as an airfoil up front, it's pretty open except it's surface area will be added as part of the 8 square feet rule. Tommy's, Clemens' and the Brauch's Cheetah all have different front wing designs, some with multi elements.

--Joe

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Joe Gonzalez
1979 Legrand DSR- B Mod
Gilbertsville, NY

Thanks Joe.  I don't want to do something I'd be scrambling to undo in Lincoln.  That'd be worse than showing up for the tour in Dallas last year with a 5' tall rear wing!

I definitely need to extend the splitter.  I first replaced the original 1/2" plywood splitter with Alumalite and then with sheet aluminum after I tore up the Alumalite (one event - stupid cones!).  I lopped off the aluminum splitter at the body and we've done horribly since.  I've got enough of the aluminum sheet to start over and, after racing against two of the three cars you mentioned, think it's time for a dual element wing up there.  That's what we need - more weight!

Mike

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A Freudian slip is when you say one thing but mean your mother.

Sure Mike, no problem. I ended up putting a complete splitter up front this winter. The old set up was mostly open underneath and didn't hold up too well to cone hits. I went with 1/2" plywood covered in epoxy and paint. It closes off the entire front end and fits flush to the foot box. So far so good with durability. It's big enough so I can add a wing set up like Clemens' car if I want. I can send you pictures of the design if you want. I'm pretty sure our cars have the same front bodywork.

 

My R1 ate it's water pump at the Finger Lakes Tour a couple of weeks ago causing us to DNF all runs on day two. I'm in the process of installing an electric pump.

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Joe Gonzalez
1979 Legrand DSR- B Mod
Gilbertsville, NY

Bummer about your water pump!  Let me know how the electric pump works out.

We raced against Tommy and Brianne at a Divisional a couple weeks ago.  They lost a CV joint twice and we lost our shifter cable and battery.  Now I know why they say BM stands for "broken mostly"...

I wonder whether the sides of our bodies are the same.  Do you have a "filler box" extending the width of the side pods out to the width of the body?  We do, maybe two inches thick made of thin aluminum sheeting which has taken a beating when I slide through cones.  I'd like to redo them with something that holds up a bit better.  That or stop hitting cones!

I would appreciate pics of your new splitter.  I think you've got my email address (firstname at lastname dot com).

 

Thanks,

Mike

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A Freudian slip is when you say one thing but mean your mother.

Sorry to hear about your mishaps. It's funny, we run local event after local event, divisionals, national championships, without issue, but this is three years in a row we have broken the car at the National Tour! How did it all end up? Our NE Divisional is in August so hopefully all will be running good by then.

 

I'll shoot you some pics or you can check under my Facebook in the Sports Racer album for pics of both the splitter and side panels. My car has filler panels on the side covering the slightly rounded side pods but they are made of fiberglass, hold up pretty well. I'm pretty sure the bodies of our cars, front section and back section are the same. I believe they came off of Chip Haddock's molds in Florida.

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Joe Gonzalez
1979 Legrand DSR- B Mod
Gilbertsville, NY

I thought it was "Bring Money"    Mine has been up on jackstands since Dixie, waiting for uprights/bigger CVs and after that, I need to have axles made.  

 I made my splitter out of plywood--but honestly, my first attempt is more like just a cone guard.   

Made mine out of balsa core covered with kevlar.  So far so good, hit a few cone and has been draged (ride hight a touch low!) without a problem.

Maycar:

Made mine out of balsa core covered with kevlar.  So far so good, hit a few cone and has been draged (ride hight a touch low!) without a problem.

Sorry, that's bringing too much money!

I've tried different materials and, with the undulating home track down here (Gulf Greyhound Park), I've decided to stick with .040" sheet aluminum.

Has anyone found a good material or "bumper" to protect the wear areas of their splitters?  Perhaps our springs are a bit weak up front but we scrape the outer edges quite a bit.  It's the rivets and bolt heads I'm mainly worried about...

Thanks all!

Mike

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A Freudian slip is when you say one thing but mean your mother.

moulckers:

Maycar:

Made mine out of balsa core covered with kevlar.  So far so good, hit a few cone and has been draged (ride hight a touch low!) without a problem.

Sorry, that's bringing too much money!

I've tried different materials and, with the undulating home track down here (Gulf Greyhound Park), I've decided to stick with .040" sheet aluminum.

Has anyone found a good material or "bumper" to protect the wear areas of their splitters?  Perhaps our springs are a bit weak up front but we scrape the outer edges quite a bit.  It's the rivets and bolt heads I'm mainly worried about...

Thanks all!

Mike

 

I want to say total cost was less then $60. 

The official stuff is called Jabroc. A composite of some kind, Jabroc can be purchased from Pegasus and others and is widely used in this application.

I actually cut up one of my wife's cutting boards which is made of HDPE (high density polyethylene) and made skid plates for my splitter. It can be easily cut and machined with regular tools. I recessed the hardware so it would not drag. Seem to work perfect so far and even if you buy a new cutting board, it's very very cheap.

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Joe Gonzalez
1979 Legrand DSR- B Mod
Gilbertsville, NY