John Parsons

@meatman Geez. Now we have to figure out if Canada uses the UK or US octane standard! 🤣 🤣 Edit: Canada uses the US standard. 😀

@meatman The next question is what octane are we talking about? British? or American? Check out this article. Spoiler: 100 UK is about 95 in the US.

There are no provisions for knock sensors on Hayabusa engines, so there's no way to detect detonation, and so there's no ability to reduce timing. That's true for all the ECUs (OEM, MBE, Life, ECUMast...

@raider89 Dan -- you need to find out exactly what kind of gasoline you're using. Is it Sunoco GT 260? GT 260 Plus? Or are you using leaded race gas? Have a look here... this chart lists the Sunoco ga...

@meatman Right -- an easy way to raise octane is to add ethanol. Ethanol has higher octane, but lower lambda: without a fuel content sensor (or a tuning change) you'll be running lean. For example, Su...

Welcome, Adrian! You've come to the right place for help rebuilding your Radical and to join a great community of like-minded folks. Good luck with your project, and ask away!

@buzzdave Welcome Dave! Us SR8 owners have to stick together... we're a dying a breed!

My Stilo helmet has very effective earphones built-in. No more need extra for hearing protection, and the built-in mic and headset are a nice luxury. Just make sure you have your hand signals with cre...

The 3 piece wheels are significantly lighter than the one-piece wheels, so that's an option if the one-piece aren't required.

Seems like a good upgrade to make to the car during its summer refresh.

With the recent discussions about helmets and suits, I'm wondering if anybody is using arm restraints? Seems like they'd be handy during a rollover or wall incident. Thoughts?

Did you not see what happened to Romain Grosjean in Bahrain last year? I bought a much more expensive suit the next week. (apparently, I wasn't the only one, lol) Our cars aren't formula cars, but the...

I've had my share of spins too, and pushing in the clutch isn't a natural thing for me. But the last couple spins I did manage it. There I was, parked 3m off the track, yellow flags waving, pleased wi...

@lunatic Can't say if it helped -- the car came with it installed. But Radical market it as part of their "high temp kit". So they think it does. Or at least they think we think it does, lol. It's cer...

@lunatic Robert, my Gen1 SR8 had side scoops for extra airflow, along with a 3rd, front-mounted radiator. You can see both in this picture (it's the red one in the lower "bunk", lol). Attachment : ...