CharleyH .

i emailed them about some parts but they never replied

The Performer is powered by a GSXR 1000 engine, quiet similar to a SR3 but without a diff and without a suspension. In a way a hybrid between a superkart and a car. It weighs only about 290kg with abo...

I had to replace the fuel cell in my Prosport. Fuel Safe has a design for a short cell to replace the fuel size cell found in the original car. I believe this will fit the SR3 also. Attachment : ...

My trial ignition coil arrived today. It's from the Bosch Motorsports catalog, designated PS-T. Truth be told, it's a passenger car coil used in Alfa Romeos in the early 2000s. Most importantly: it fi...

I think the Radical community could really benefit from some additional suppliers in the mix. I doubt Radical feel that way though. 🙂

Posted by: CharleyH Like so many things with Radicals, the low volume and the fact that they are all over the world makes the aftermarket a challenging business. If they are a Low cost strong wheel t...

Thanks Charley. I'll keep the updates coming. Summing up progress and photographing things as I go helps keep me organized and focused. 🙂

With the vacuum manifold and vacuum port problem solved, I've moved on to how the actuator will work. I found a sweet 8mm ID CNC router coupler that allows the actuator to directly drive the throttle ...

Thanks Nikki. That's great to hear about Radical helping get your devices integrated. I really think my case of the old ECU and older GCU was just too hard -- or perhaps they thought I couldn't do t...

Last night's project was the vacuum manifold. Each of the just created throttle body vacuum ports will be connected to the manifold. There are two additional ports: one goes to the MAP sensor (the who...

The original 3-piece Wheel was from Image; I ordered spares last year directly from them.

One of the first sub-tasks is to modify the throttle bodies to support a MAP (manifold absolute pressure, aka vacuum) sensor. There are no provisions for a vacuum port anywhere on them. Jenvey (the OE...

I'm upgrading my SR8 to a MoTeC M150 GPRP (general purpose racing paddle shift) controller. I found that the gearbox controller (by Geartronics) was so old that the tuning software didn't work, and th...

Radical is now selling one piece wheels that are much more reasonable than the original 3 piece design. I bought new ones from Spring Mountain for $2500 for a set. I'm a Forgeline dealer, and I spok...

Hello all. Thanks Charley! I've been wondering why there wasn't a dedicated Radical forum! My (current) Radical is a 2007 SR8, which I've been working on and (rarely) driving for the past 2 years. I'v...