Thank you for sharing! It’s great to see results from on track testing, rather then endless debates, or even worse, people who dismiss everything other than ‚the best thing‘ without any actual data!

Jim - great upgrade on the Z-4. I bought this car from Ernie after trying it out on my track and snapping the front of the chassis off in a bad shunt. I got a replacement one (still Swiss Cheese, mind you) and put in some stiffeners - but obviously not enough weight!! Thanks to you, I now know what those silly axles are for..!!!! But Jim, please, I can send you a set of proper wheel inserts for a Zed 4 !!!!

We have found the scaleauto viper to be the best gt3/gte type car on our wooden track.

Hi Jim greatly appreciated your information regards rhys watsonia Victoria Australia

Nice sharing bro

what chassis is that?