John Parsons

My local track is Very Very Very hard on the brakes and creates brake fade on almost every car during the day. It was my own fault for not bleeding the brakes after the last session (3x20 min session...

I reached out to Hewland for torque values on the gearbox since Radical doesn't have them in their manual. Here is the picture I sent Attachment : Gearbox Picture.jpg And here are the values: ...

I had a gps problem with my 2021 SR3XX. I called AiM and they asked me to send in the smartycam and the GPS, which were tested and they determined that the GPS was faulty. It was sent back to Italy ...

I'll switch to those PTFE type lines. Thanks for the info. My cobra runs on 110 leaded, maybe the fuel is less corrosive than the unleaded 100.

Get your bidding paddles ready! Very fresh turnkey car ready to go on track!

I am pleased to announce that the Radical Factory has agreed to team with the Radical Sportscar Registry to directly answer questions that the Radical community has about their cars. This is a great ...

I just bought SR3 0925 from Robert Burgess for track days which I now enjoy more than vintage racing. With 50 years of British race car history between the 2 cars in my garage, I think the SR3 will ge...

The tires are directional marked. I talked to Hankook about this exact subject, they said the tires are intended to run in proper noted direction for the 1st heat cycle only. After that, they can be...

Now that my old Prosport is updated with quality dampers, brakes, larger wheels, fuel injection and RPE dry sump in a 1340, I'm preparing a 1500 for the upcoming season. Charley has told me that when...

My tinkering is limited to routine maintenance. Unfortunately (or probably fortunately) I have a pretty good idea of what's beyond my skill set and try to stay under that threshold even though I woul...

Those new sidepods look awesome. I debated with myself for a while if I should build a sharkfin into my sr3 re-body when molding the new carbon parts, i ended up no doing- it but after seeing it on th...

Had just ran out and now I have a few more sets coming home with me from the NOLA test, can ship mid week or so

Hi Robert, Good to see you on here, you will find plenty of info and help once you have a Radical sorted. What is your plans for the SR3? Hillclimb/sprint or circuit stuff? Will be worth considering w...

Here is an interesting piece of Radical SR8 History! This car was owned by the late Steve Prentice who was the designer of the Radical SR8 engine. This is one of only a few road legal SR8's. It is ...

I'm just seeing this thread. The Radical and AiM integration are a difficult issue. To start defining things, it's important to know the players - AiM Sportline makes the hardware and is in Milan, Ita...