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Using both a 2010 and a 2016 Mercedes Sprinter RV on the 3500 chassis with the 5000/500 trailer package, I towed a 20x8.5 trailer with a STohr WF1 inside. Trailer by itself was ~3000#. Total...

I towed a 1998 Pace 20 ft flat nose enclosed trailer behind a 2010 and 2016 Sprinter 24' RV. The tow package was 5000/500. Some newer ones only have a 3000/350 package. My P2 Stohr WF1 weighed in...

My WF1 had to be loaded into the trailer with a process to be successful. I was able to load and unload easily by myself. WF1 had to be loaded rear end first because the splitter was not removeable...

Pat - From what I recall, a 22 inch rear tire would not fit within the rear bodywork and diffuser structure. The difference in speed between a 20 vs 22 rear tire is about ~12mph (12000rpm 08 GSXR)...

There are a lot of different race cars out there in SCCA, Vintage, and NASA. Tin tops and Formula and Sports Racers. Summit Point is a good track to go visit during a race weekend. Look around and...

Radical SR3 is in P2 Table 1 Spec Line Cars (~page 603). Shows a stock engine between 1005 and >1370 cc requiring a 40.5mm restrictor and min weight of 1300 lbs.

https://www.apexspeed.com/forums/attachment.php?attachmentid=102565&stc=1

Getting the logbook without it depends on the Scrutineer who is issuing it. It is required according to the GCR, yet most of us never use it for fuel samples. Best bet would be to install it.

I...

Have not seen one connected to the return line. I use a Jiffy-Tite 3000 female connector situated in the hi-pressure line after the fuel filter using an inline tee fitting. I have a male Jiffy-Tite...

I am curious as to what sorts of times you were posting at Homestead. Just to put it in perspective, at the recent Homestead Majors a decent P2 time was ~1:22 while an SRF3 was ~1:30.

Basically, that car can run in P1 as is with a minimum weight with driver of 1075#. It will need the proper SCCA decals, class designation, min weight, etc. You will need an SCCA...

That AMAC is the one that Dick Boggs and I owned.

SouthEast Division also holds a Racing School in February at Roebling Road near Savannah. February 26-27.

SEDIV also has a full season of racing. Schedule can be found at www.sedivracing.com
...

Clint said on FB that his car was running 11 mph down and decided not to start the race.

Measure Caster. When I got my WF1 it was set at 12 degrees. Hard to turn at low speed and had to fight steering wheel from wanting to return to going straight in a high speed turn. Reduced caster...

That looks a lot like the P2 limitation. There are only a couple of systems that meet P2 requirements. This is a great advancement for the F600 guys.

I run a Flatshifter Expert in P2. Simple...

What sports racer do you have?
What year is the GSXR 1000?
Is it stock or modified?

There is probably a lot more information that you might need which is dependent on what the car is. ...

There are some differences between tracks regarding fuel useage. How long do you spend at WOT, for instance? For a 20 min race, I can use between 2.5 and 3.7 gallons for tracks like the Sebring...

SpeedSeat is an excellent product. Find somebody locally who has experience in doing seats. Failing that, Jody can meet you somewhere and do the seat for you. They are an apexspeed advertiser. ...

That dash unit hopefully came with a manual. If not, find one online. Hard to read but is that a Motec? Is there a data dump plug for the dash/data system somewhere? There is likely a You Tube...

If you remove the pushrod in the GSXR, engine oil will be pumped out of the hole left in the pushrod seal.

Removed.

For a Stohr WF1, the differences between P1 and P2 are mostly weight, restrictor, diffuser design, and wing/end plate size. Reasonably easy to change from one class to the other.

For motorcycle engines, there seem to be to widely varying ways of defining restrictor usage -- F600 and P2. F600 is a restrictor between the head and throttle body. Throttle remains stock with...

Just one anecdotal experience. I ran a bone stock junkyard 08 GSXR for 23 race weekends (might be some sort of a record), RillTech oil pan and carry 5 qts of oil. Only took it out because #2/#3...

In the SEDIV Regional series, we have one driver who attends most of the races and drives 2 cars. They are put into two different groups to allow him to do that. One is usually his FA (sometimes...

Ellen and Dave Ferguson at Veracity Racing

When I talked to them, I was told that they were going to find someone to continue working on the differentials. Have not heard who that might be yet. Anybody know?

SEDIC 2021 Schedule can be found here. http://sedivracing.com/road-racing/

SEDIV Tracks range from VIR, Charlotte, Carolina Motorsports Park, Road Atlanta, Barber Motorsports Park, Roebling Road,...

Yes on the Aluminum rear sprockets. I always had them anodized as well since it seemed to preserve life a bit better. I could not see any signs of unusual wear on the sprocket but could not see all...

Look under SR:classified . There are a few good cars for sale there.

It all depends on what you define as cheap. Frequently a partial SR labeled as cheap becomes much more expensive that one...

There was no external evidence of any in the pictures I have of it. Looks like one seamless piece .

While I had the car the rollbar remained the same as when I got the car from Dick Boggs.

David - Thanx to your guidance in the past, I had already added those stand-up pieces to the car.

This is the roll hoop and side bar configuration previously.https://www.apexspeed.com/forums/attachment.php?attachmentid=93397&stc=1

I buy my Hoosiers in those sizes from Appalachian Race Tire. https://racetire.com

With the mechanical FP gauge in plain sight, I check it everytime I do an engine warm-up. I have never seen it vary from what I set it at. Simple answer for me is it almost never gets adjusted.
...

My FP Regulator is located above the fuel cell behind the cover. Although I rarely have to adjust it, I am able to reach the regulator lock nut and adjusting rod without removing the cover, seat,...

A significant factor is the blue flags. As drivers, we often get wrapped up in our struggles and forget to glance at the corner stations. The F&C guys have a significantly better view of the track...

In the Regional races in the Southeast, the Wings n Things get to run all together (if the car counts are low) or in 2 separate groups (if the car counts are sufficient to warrant both groups). ...

The P2 motorcycle engine of choice for the past few years has been the Busa. I know a few people who have scrapped their stock or modified 1L and switched over to the Busa. Look at the top...

P2 does run 1000cc bike engines. Can be stock or modified and the weight/restrictors change accordingly. But P2 also allows Busa and many other engine combinations with weight/restrictors to...

Is it your interpretation that engines can be modified in any way necessary to meet the 14.5:1 compression?

Maybe SCCA did attempt to offer some tools to survive with the recent increase to 14.5:1 compression allowed. But in doing so, they said the cars have to meet all of the December 2019 GCR rules. ...

email sent

As I am sure that many have dealt with Stan Clayton of Dauntless fame and Stohr Cars, I would like to offer yet another example of his excellent customer service. Recently, I had brake issues with...

From Pingel: "Helpful Operating Tips: Here is an example of what we found works for us: when upshifting at whatever your shift point RPM is (2000 – UP) do not drop the RPM to make a shift happen,...

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This may tell you a bit about the Pingel.

Pingel is an old system that was used a lot of Harleys. I had one in my AMAC in 2007 which the PO had installed. It worked fairly well until it started acting up halfway thru a race. It became...

Wiring harness, headers, oil pan, ECU, may be necessary as well.