John Parsons

I just published the latest "Ask Phil" Question. This one is from @JoeP regarding the SR5. Take a look. 🙂

What I like about the Radical is how quickly it is able to shed energy in an accident situation. Someone mentioned a spec Miata, which I think is a terrific track car. The lightest car I could find w...

G'day @dudical26 - there are some 'conical' attachment points (4 of them), one at each end of the factory 'angled sidebars'. These types of joints are typical in chassis designs, and have a bolt thro...

Another day of testing and adjusting. Pushing limits and engine failsafe systems.. car is a bit handfull, running 0.6bar of boost all day long. overboost button gives boost at 1bar pressure. Enough...

Seems like I’m having the same issue with my SR8. It’s fine in the pit and on the track for the most part. Going down the straight at WOT my low fuel pressure light flickers on. Then once in a while i...

Beautiful trailer! You should definitely consult John Parsons on here that put motec on his SR8. I should surely think there is a good deal that will carry over, like the Jenvey setup. Excited to see...

So it is time for the old girl to get some upgrades after 200hrs of very reliable trackday fun and also as a reward to myself for the long hours of work over the past year due to covid. (12 mths ago)...

@parsonsj We will be at Sebring in November, can work packages with you for pickup there

Hi Guys, I have about 10 sets of used tires, most with 5 sessions on them. Most of our customers run in the race series and after 4-6 sessions they are throwing tires away due to time for qualifying, ...

Just thought you might enjoy a video of our latest 1596cc Hayabusa engine on the engine dyno putting out 280hp at the output shaft! Attachment : 9475f8a0-6ee6-4980-998c-a5235bf2e5d1.MP4 ...

Finally..after months it seems of various issues, the #50 SR5 is finally running strong! Since buying it this past March she's been plagued with electrical issues (noise), fuel starving (fuel pump/wi...

Posted by: @azwcat @davidf - Sounds like you went with the full enchilada on the chassis setup. Quite an investment! Would be great to get your review on those items. Will do. I will do a coup...

If they're replaceable, I'd do it. If I'm seeing the issue correctly it may cause some pad binding at times. When you let off the brakes the pads need to be able to pull back a little so they don't ...

@sr10formetoo Thanks, I kept missing turn ins and apexes because I was concentrating on braking points. The weight and speed is taking time to get used to. I may need to adjust the set up. I felt l...

Page 8, the TPS dial has an "aggressive" and "more aggressive" throttle map. I think that is pretty funny