Take a look at the book and see see how how true that is on the format of this video. What we’ll do is just kind of discuss the book, maybe leave through a few of the pages, take a look at some content and i’ll. Give my quick summary at the end so so about the author, um uh. He wrote this book it’s released january 2021. You purchased this off invisiblespeed.net now on that site, with the purchase of the book, you’ll get a online access to some additional online content. Where this book is a lot of details, the online content is more. The quick, quick setup guides – and i like spreadsheets let’s, say, do this and do that, which are not really the explanations that you get in the book but they’re. You know in addition to the book, so he released this january 2021 uh he’s, a racer and car designer from finland and joseph choir grains, also known as jq mechanical engineer, designed his own car. I think he’s into the the fourth version of it now. I think he calls it the black edition, so he’s got a lot of expertise, uh his youtube channel, where he does shares his information. A lot of q, a in discussion, uh segments on there, so i’ll put a link to that in the description below so that you can go and check it out. Lots of content there – probably 150 videos uh. So this book would be the pinnacle of his knowledge.
Um, 10 years of car design, working with his race team and tuning cars to every track condition, and all that is distilled into this into this book um. So a quick review for those who want to tune in and tune out uh is this worth spending your money on to get this, this information uh the quick answer, yes and for those who just dropped by for a quick stop, please like comment and subscribe for Those who want to get a bit more details let’s just follow along um. The summary of this book probably is best described by the the back cover the first sentence, where jq talks about that. As a that card designs, a compromise and the designer must decide what setup parameters to prioritize and, as a result of that which ones to compromise. So everything kind of distills everything about rc car setup is that the ace specific change will make a benefit, but it’ll also have and cause some other consequence that, may you may or may not want um. The context is um. His cars are 1 8 scale. Electric and nitro so it’s from the perspective of four wheel drive cars. The information does translate over to two wheel: drive uh roll centers or roll centers, and maybe some in on road as well. Uh like four wheel, drive touring car. Probably the the theory is the same, and just just the touring car doesn’t have to worry about the bump handling that maybe this this book talks more about uh.
This is more of a conversational style guide. Now you can see just looking through the pages that it’s more of a an explanation and discussion about a particular setting, there’s, not very many tables or anything in there that you know say if this happens do this um, but what it? What he does do is that, for any particular setting, say um just take a look at the table of contents and see some of the things he does talk about. So, for any particular setting, say, let’s say like these link angles for the rear, camber links for any particular setting he’ll describe what the setting does and then discuss it from the perspective of you know, how does it affect overall grip or forward grip versus side grip? How it affects role centers, how it affects camber change, bump handling, and then he also discusses how it affects corner entry, mid corner and corner exit and corner speed. So any particular one of these link adjustments there’s a lot of information in there, so you so. You understand how the adjustment works and not just what it does. I guess so it’s not a prescription of do this, or do that it’s more of a discussion where it says for this. These are the considerations um. He also does provide a lot of examples in the book. It says if you see this type of thing on the track. This is probably the first thing that you should do or for a particular setting.
If you notice a car like rolling over too much or rolling over, not enough, then this is a setting that should be done. So he does a lot of those examples, so it’s more of a conversation, more of an education to say this is what you look for, and these are the adjustments to suit that what you see, um let’s, just take a look at again at the table of Contents, just to kind of see where i kind of see like how many pages does he dedicate to a topic kind of shows the importance of that topic. So we see race card geometry and alignments and we’re talking about role. Centers link links, hinge, pin heights uh hub height, all those kind of things there’s about about almost a quarter of the book dedicated to that topic. We’Re talking about you know, kick up handy squat front rear toe. All those type of things fall into that section. So a lot of content on that roll bars gets a page ride, height gets a page, uh up and down travel gets a page, wheelbase and track width gets a page and the next big topic he uh he has is suspension. Shock oil springs, pistons, rebound bladder versus emulsion on some other topics that get a page and then i guess what everybody likes to to see at the end of the book in a later chapter, a summary of basically all the other discussion and how you would set Your car up for different track conditions like bumpy tracks, smooth tracks, low grip, high grip and the settings that you would do and uh examples as to when you would we’d make those changes uh in the book.
There was a couple things as i went through it, a couple things that i did that i disagreed with and maybe it’s my own personal understanding of that setup and what it’s, what i’m going to do is go back and retest. So one of the areas was around the wheelbase and track with he described. Widening the rear by the hexes gave it a more grip, and i found that it in my experience it reduced grip, but it increased stability of the rear end, so that was that’s. Something i’m going to test on track, because maybe there was something else that i was doing in my setup that that led me to the wrong conclusion, and the other thing that i that i have to retest based on his recommendation, was um with shock pistons. He said that pistons with more small, smaller holes were better for a a loose track or a slippery track, and i had found that less bigger, bigger hole pistons seem to work in that in that condition so i’m going to go back and retest those. But i think that’s, the main takeaway from from this book is that it’s really going to make you think he has an opinion based on his knowledge, based on him, designing a car uh running with his race team tuning that card to the track conditions. So you can, as you read it, you can agree or disagree with his point of view and and and do your tests to confirm your suspicion.
This book is going to teach you something it’s going to make. You question your understanding, maybe solidify your understanding is, if you agree in some cases – and i think you’re going to be a better racer from it, because uh your car is going to be better set up for the track condition um. This is probably the book that should have been in your in the in the car. When you bought your kit, they should had one of these in the bottom that you opened it up, and then you understood how you could adjust your car uh to suit your track condition. So this is an indispensable resource and something i wished was available early in in my racing. I’Ve been racing myself for 10 years and have a fairly good understanding of these topics, but it was good to get a different perspective of someone who has maybe more experience in design and setup. So final final summary: is this worth the money? Yes, it is it’s going to make you a better racer, because you’ll be have a better scale setup for your car, for your condition. So thanks everyone for watching.