I haven't tested it yet but i'll give you 5 stars for not ignoring the users regarding the pitch problem and because i love radicals ofcourse.
But... regarding your kids, just a piece of advice dont take it the wrong way it's only intended to help you. It's beter to let them drive a difficult car. There's a reason the skip barber gets recommended as a starter car alot and that reason is that it's an unstable piece of crap and that is actually a good thing beginners. If you learn them to drive in such a car they will ofcourse get frustrated and it won't make them neccesary a beter driver. But it will make things easier for them in the long run if they start driving a GT3 for example. ( please don't let them, gt3 are for braindead people. I'm sorry if you drive them but it's the true they're not excactly hard to drive) But anyways once they stop with the skippy and move to a higher class open wheeler or lmp they'll have it much easier compared to someone who didn't drive an unstable car. They will be alot more comfortable, less frustrated and make fewer mistakes in real situations where there's more grip. It's also beter to learn from your mistakes compared to taking the easy road. So you might actually want to reduce grip instead of making the car easy. These are not my words but those from 2 guys who both won the dutch formula ford championchip and now work for a university and when they're not busy training people in their simulators they also as a freelance race engineer in the WEC when they have some free time. I know this because i was looking for new pedals so i went to niels heuskinsveld site. After almost falling from my chair when seeing the prices i looked at who he worked with and it started to make sense why his pedals can cost over 1k€ . Go check for yourself you'll be impressed 1 of them is a former F1 driver and one of the others is an Audi factory driver who managed to win a race while his car was on its roof 3-4 weeks ago. And another one who's first name is Atze (maybe it rings a bell in your head if you follow simracing very close) gave or still gives training to Max Verstappen, the 19(?) year old who stole Hamiltons F1 title and gave it to Rosberg in the second last lap. And 3 races later he did something many taught was impossible with a car in the rain. After learning about that i found that his pedals are actually pretty cheap considering the knowledge and expierience that goes in them and quality too judging by pictures. Too bad cheap is still to expensive for me. Anyways i probably bored you enough so here's something that will make my complete explenation useless and probably proof me wrong :
http://repository.tudelft.nl/islandora/search/subject%3A%22racecar%255C%2Bsimulator%22 it's a thesis titled "Exploiting the possibilities of simulators for driver training" Written by a guy that achieved too much to list... Start at page 111 chapter7 if you're intrested in teaching your kids how to improve in simracing if it's just for teaching the physics you build this car then i'm terribly sorry for wasting your time but i felt a bit bored so... Thanks for the radical btw i appriciate it more then you think.
PS: I'm too lazy to proof read so if you're ofended bi a speling or gramar eror i can only sugest to go **** yourself. @Niels: If you happen to read this can i get free pedals now for the free advertisement or is it a lost cause asking a dutchman for something free. ;) mijn oprechte excuses in dat geval!