Basic rearend geometry for 4 link cars simply explained.
Пікірлер: 111
@brainward261127 күн бұрын
I really enjoy your videos I have learned huge amounts from them I'm having problems with a new phone rack that I've started to go to So I'm watching them again lol Thanks again great videos
@lucaspuras20873 жыл бұрын
Glad I found this. This is brilliant. Rob has personally helped me with projects and he knows his stuff! If you want to get down the track, soak all of this up! These videos are highly informative! Rob can save you money and make your current setup far more effective! Liking, commenting and sharing this! Thanks Robbie!
@thestickcahhhh4 жыл бұрын
I have spent a ton of time reading about this subject and your explanation of it clears up so much confusion. Straight to the point, and that illustration with the bars taught me more than any conversation where all they talked about IC, AS, etc etc etc. Great stuff.
@BillyP-49Chevy Жыл бұрын
As a beginner, this is a great explanation. Very very much alike with how turbo john explained. Thank you.
@paulmcdonald35704 жыл бұрын
Thanks for the advise on four link operation. Your teaching method is one of the better ones I have viewed. Simple and to the point. Great job!
@mikef-gi2dg4 жыл бұрын
Rob I love this video. I got a 15 second 78 Malibu. No real power, junk motor, but when I did what you mentioned to my factory 4 link the car became ET deadly, because it would 60ft the same all day long. If it 60ft's it will ET, and you can dial it HARD. That was 30 years ago, it still applies. I got 2 Chevy Monza's, the torque arm works, hope I can find the t-arm segment, I want to back half the monza's with bigger tire, but want to keep the torque arm, if possible. I'm, going to watch the video again now.
@beznich4 жыл бұрын
So helpful! I'm currently on the floor of my shop making some changes since our race last weekend at Bradenton to try tomorrow at Shadyside. Hopefully I'm making changes in the right direction!
@demartinsm84794 жыл бұрын
Rob, I can't tell you how much I appreciate you making this video. I've been searching the net for some advice on how to get my El Camino to hook up. I really do appreciate this
@thenarrowway95035 жыл бұрын
Thanks Rob. I'm new as you know to the race seen. Keep doing information videos. I wanna learn the right way. 🙂
@RobD8285 жыл бұрын
TEMPTRESS RACING I’m going to continue the series as far I can go without getting extremely in depth. There’s plenty of in depth information out there. Just trying get everyone familiar with the terminology and which general direction to go in.
@josephlay2885 жыл бұрын
Glad you started this channel Rob. We've never been personally Introduced. But I see you alot at the track every Thursday night that I'm there. An you do help alot of people out. You seem to be a great guy. An good to see you helping out as many as you do. Im wanting to go to a 315 radial tire. Because it seems to be much faster because it dead hooks an every rotation is forward movement. But these slicks been giving us hell since we've actually put some power in the motor. Next time I see you I'll introduce myself. Wouldnt mind hearing your opinion on what you'd do to get our 60 back an ET
@RobD8285 жыл бұрын
Joseph Lay slicks are finicky, weak, pieces of shit in my opinion. “Oh, yea, but rob, no prep” Yea to hell with that shit too. They have their place but they are so temperamental that they will not be on anything that I intend to race on a regular basis. Either way. Thanks for the support and I’ll be glad to help.
@josephlay2884 жыл бұрын
@@RobD828 hell with no prep too if gonna run like that. It will have the 29.5 17.50s under it an go to the street lol. Man seriously though after reading you comment that's what the problem was. We ran 1 no prep ever. And changed set up just a little and then never got it back where it was. But changed that again and got it back where it was an now it's back Atleast in the 1 teens in the 60. But I'd still like to go to a radial. Gonna have to throw these on an try them just see how they do. An well deff have to talk when I see Ya. Thanks for offering to help bud prob take Ya up on that when wear these junk tires out lol
@AaBb-zj2ld3 жыл бұрын
thank you clear and to the point. SUSPENSION. awesome video!!!
@wolfplayer191210 ай бұрын
Perfect explanation !
@batdad1873 жыл бұрын
Thank you for the info Rob! Any way you could do a vid on instant center length and height now? And when/where you'd want to have it longer/shorter/higher/lower? 😁
@terryclark96032 жыл бұрын
Good video Good information. Ironman in Alabama 73s
@kslvlkdfhkvhkfviwehbhjhj4 жыл бұрын
"Tell them to STFU and go somewhere else". LOL
@bevins383 жыл бұрын
I’ve been drag racing for 15 years and just stumbled on this video and this is what got the like from me lmao
@mattmcdonald36594 жыл бұрын
Straight forward and no BS! Thanks Rob
@ErikHGreen2 жыл бұрын
Love this guy. Thank you for sharing the information
@user-vf9fw7io3w11 ай бұрын
Thanks for info, respect!
@drewg92852 жыл бұрын
Poor Tina 🤣. Great video.
@Dnlwsr902 жыл бұрын
Rod seems angry but was also very helpful
@RobD8282 жыл бұрын
Lol that wasn’t angry.
@jeremyswann22282 жыл бұрын
Excellent explanation 👌
@tomfowler95774 жыл бұрын
I Love it!! Love your attitude!!! and grate Info! thanks.
@themadtatter40553 жыл бұрын
I’m hooked ty Rob I will be calling...
@s197gt63 жыл бұрын
I ran better time on stock suspension and not lowered prior from changing to adjustable dampening. This helps specially at Fontana speedway CA.
@604cuinkillah2 жыл бұрын
4:52, fuck yeah😎 Great info, thank you so much for info. Friggin hilarious😅😅 First video, and I DEFINITELY subscribed lol
@matthewritchie35954 жыл бұрын
Guys like you make me wanna get Into racing for sure even on a small level. Just amateur 9or10sec class etc street care takeover stuff. I wonder if I can run an airbag suspension on the track or will I have problems
@RobD8284 жыл бұрын
Matthew Ritchie you can run it with the correct shock
@HP_Club4 жыл бұрын
Raw & to the point! Love it
@MtnBadger4 жыл бұрын
Hello, great video. I understand what you are explaining here, raising the pivot point of the lower linkbto push the drive angle over the top, forcing the front end down. I feel as though I'm finally grasping "the magic" that you've been explaining. My question is, A) How does this relate to the instant center (which is short, the way you have it shown here) and how close to the front bumper do you want it, especially when talking about either bagged or regular rear suspension (if there is a difference) and B) What percentage of "relief" (20, 30, 40, 80%?) are wheelie bars supposed to give in finding the balance between squat and driving over the top to keep the front end down? My problem is that one questions answer tends to give me five more questions and I sometimes over-think the whole thing but, id rather ask too much than not enough. This is mostly 5o let you know on what track my thought train is traveling. I try to get that dancing fairy stuck to the head of the pin, it just doesn't always happen... lol Thanks for the info.
@richpawlak84324 жыл бұрын
Have a grand national 500 hp. Would like to get into setting my rear up using this method for the street or track. I have an all Hotchkis set up but all non adjustable. Can just adding new lower brackets and adjustable upper and lowers get my anti squat and instant center where it needs to be. Like the kit from UMI. I think it has 3 adjustment holes. Thanks for the videos.
@markbogle8062 Жыл бұрын
Thank you for the infor
@boxedfender48103 жыл бұрын
I think the dislikes are from Jackstand Jimmy and his ex girlfriends cousin sister Two Ton Tina But thanks for the explanation I had no idea what people meant when they said separation
@kolemieux5 жыл бұрын
Tremendous video Rob
@infamousftfw2 жыл бұрын
Just found your video! I'm building a 2000 mustang.. trying to find what would be best suspension for the rear
@oscarutrera98293 жыл бұрын
This is great information.
@toddmaggard92594 жыл бұрын
I had to get my trq box’s redone a while back because my Fox’s factory trq box’s we’re destroyed due to all the abuse. I went with the kit from wild rides racing and I haven’t had any luck yet I know the parts are great it’s me. I’m not a wealthy man by any means but I’ve managed to put together a coyote swap fox gt and my only trip to the track I managed no better than 1.7’s smh on a 26 inch drag radial. I also busted a new tko 600 so I had a bad day my only clean pass I blew the tires off leaving at 4500. So I know my pinion angle is off. I have solid uppers and lowers but that trq box kit has multiple places. I just wanna go 1.4-1.5’s with a 430hp 2700# car. Yet I’m a second away due to the sus, gear and tire.
@ronsmith77392 жыл бұрын
What if we have equal length four links which should a more a gradual rotation at the rear end with less strain at the driveshaft in the universal joint ?? Less breakage??
@escuelaviejafarms4 жыл бұрын
Excellent class!
@dirtysouthstreetcars90074 жыл бұрын
Please do a video on torque arm setup!!! I can't find any video on setting up lower control arms, torque arm, pinion angle, and shocks! Please help all the f-body guys out!
@joshchiasson71154 жыл бұрын
Since you did a great job with the explanation. What is different when dealing with a parallel 4 link set up as far as adjustments
@RobD8284 жыл бұрын
In order to make any significant adjustment in instant center or anti squat it will have to become unparalleled.
@leroytapia25965 жыл бұрын
Leaf spring Caltrac tips?
@donaldpage6073 жыл бұрын
Is your depiction of the center-of-gravity realistic? I was surprised to see it depicted so far forward. I really expected modern racecars to have the COG much farther rearward?
@RobD8283 жыл бұрын
Most of our radial cars have a 60% + nose weight. I’d say if anything it’s further forward now than it ever has been unless you have an all aluminum nitrous small block in which case you’ll be adding tons of nose weight anyway
@keysautorepair60385 жыл бұрын
Have a leaf spring caltracs setup if it isn't in the air it a foot or so I loose traction any remedy for that.
@trustyourself12544 жыл бұрын
Thanks Rob
@rickreynolds2695 жыл бұрын
Can you discuss angle as the car separates, maybe bar angle is easy for a guy to check
@grannysgarage81014 жыл бұрын
What tuning tips can you give for a street only car on radials? I have a g body and was thinking of running some southside bars on the lower arms. Strictly a street car never plan on taking it to the track
@glennroy-johnson7054 жыл бұрын
Thank You
@SandLakeGarage2 жыл бұрын
Is this the same adjustment you want for the street?
@chuckmonasmith38493 жыл бұрын
Thx for the help....
@toddmaggard92594 жыл бұрын
Calling tomorrow and where is this shop located?
@jamesmitchell34535 жыл бұрын
i assume this doesnt work with big tire slick cars? Cause tire shake or worth a shot? thanks
@jamieknight96363 жыл бұрын
Hey there Rob, great vid bud thx for that. In relation to a standard triangulate link setup with no pivot point adjustments, I guess you really can't afford to have the rear of the car too low , can bar lengths and pinion angle help here?
@RobD8283 жыл бұрын
In my opinion it’s best in this situation to put lower control arm brackets on the rearend and move the down as far as possible back ther and then lower the car as far as possible.
@bigrondell5 жыл бұрын
Please do a ladder bar video related to radial tires !! Please and thank you
@RobD8285 жыл бұрын
I will this coming Sunday.
@TheRotaryRacing4 жыл бұрын
Rob do you have a video like this for IRS cars
@billclark59433 жыл бұрын
I'll have to disagree with the definition of Cg. Center of gravity is the point where if you held the car by that point it could be rotated in any position and it would remain in that position.
@truethinker683 жыл бұрын
What's the average cost of a 4 link fab and install?
@Rick90lx4 жыл бұрын
Can you clear up a pinion angle question. Does pinion angle alone, affect traction at all? Meaning, if everything else is right but the pinion angle is off a few degrees, would you gain traction by adjusting the pinion angle?
@RobD8284 жыл бұрын
Pinion angle only insures proper driveshaft angle. It has zero effect on traction.
@Rick90lx4 жыл бұрын
@@RobD828 thanks for the clarification. Guys like to argue otherwise.
@shanebrownlee694 жыл бұрын
What an outstanding video. Now, translate this to IRS. 😂
@RobD8284 жыл бұрын
shanebrownlee69 I would love to help design a kit to correct anti squat on its cars. I would just a company with the capability to help produce it.
@shanebrownlee694 жыл бұрын
@@RobD828 Z1 Motorsports(Nissan Z and Infiniti) is one of the largest businesses for my platform. I'd imagine they easily have the means to producing kits. There just aren't many of us who are serious about drag racing them.
@jamesvaughn47474 жыл бұрын
Can you do at leaf spring caltracs tips please 👍
@andreasengelbrecht5094 жыл бұрын
Awesome video. I'm looking for some tips on triangulated 4 link on top bar lengths. Does one measure the 70% of lower bar length the same way as the parallel routhe before mounting the top bar? I've searched every single corner of google on more info on triangulated 4 ling top bar length. Hope someone can help me out with some info.
@MtnBadger4 жыл бұрын
On a four link with air bags, the angle of the top like and the angle of the bottom link (draw a line through both) should intersect at about the front bumper. This is the "instant center" and should keep the balance forward to the right point. Hope that helps.
@ItsTheFry4 жыл бұрын
all about that #ROBPREP
@maurydewitt87873 жыл бұрын
How do you set the bars if running a slick?
@RobD8283 жыл бұрын
Maury Dewitt I like to start with a slick car at 100% anti squat.
@christophercasey88334 жыл бұрын
8:53 🤣🤣🤣🤣👌
@RobD8284 жыл бұрын
Take it or leave cuz. Be great or stay the same!!! Love you found that.
@danfox34114 жыл бұрын
Question on angle of bottom bar on 4 link setup. Should that angle reference be from ground level or angle of frame or rocker panel
@RobD8284 жыл бұрын
I would have to have a great deal of information about your entire setup to make that decision.
@danielfeiner93745 жыл бұрын
Can you do a torque arm car? I feel like there is no info out there and it's not like there is a lot of adjustment to them either
@dirtysouthstreetcars90074 жыл бұрын
Yes please!!! Do a video on a torque arm setup
@terrywilson581 Жыл бұрын
🤔🤔🤔🤔🤔🤔👍👍👍👍👍👍👍
@chris22bradfute3 жыл бұрын
Keep making videos please lol
@Wormser_mcfrazzleweiner4 жыл бұрын
Does this same theory apply to lower power cars running slicks? My car tries to stand on its bumper if I'm not careful. And at the same time it seems like it is wadding the sidewall like a top fuel car. This is in a 2700 pound car with a parallel 4 link, and 800-ish horsepower. 49% rear 51% nose. 99 inch wheel base. Thanks!!!
@RobD8284 жыл бұрын
It does not. Slicks don’t like being crushed and you have to apply enough power quickly to keep them round or they will in fact wad up. I suggest moving to a radial as quickly as possible.
@Wormser_mcfrazzleweiner4 жыл бұрын
@@RobD828 I'd like to. Just not much radial Racing out here in Kansas.
@RobD8284 жыл бұрын
Wormser McFrazzleweiner someone has to be the first and the 28x10.5 pro bracket radial won’t leave you disappointed. Even on marginal surfaces.
@Wormser_mcfrazzleweiner4 жыл бұрын
@@RobD828 does that tire do ok on a 14" wide wheel? Non bead lock..
@RobD8284 жыл бұрын
Wormser McFrazzleweiner I would not use it on a non bead lock 14” wheel.
@k20edef13 жыл бұрын
Any solution for the gbody stock suspension stuff? Only adjustment I have is on the lower control arm brackets on the rear end(4 holes). Will be running either a 275 radial or a 28x10.5w
@RobD8283 жыл бұрын
How fast you need to go? We have been 1.14 60’ times with that same setup.
@k20edef13 жыл бұрын
@@RobD828 1.14 works lol..twin turbo LS Malibu...do u have a email that I can send some info on car?
@RobD8283 жыл бұрын
@@k20edef1 just text me. Phone number is in the video.
@KapenW173 жыл бұрын
Rob, how much of this do you think still applies to a 4wd turbo?
@raythomasson86604 жыл бұрын
Man, that's the kind of info lower budget guys like me need to hear. You can have 1000 fuckin hp. But if you can't plant it to the ground, lose...
@RobD8284 жыл бұрын
Ray Thomasson I can’t give specifics for every single car but I hope to help everyone get started in the right direction
@granadojl4 жыл бұрын
Nobody likes "2 Ton Tina"
@SpeedProductions3 жыл бұрын
Fastest car in x275 currently squats 🤣
@RobD8283 жыл бұрын
Which car is that?
@SpeedProductions3 жыл бұрын
@@RobD828 rob goss. Also Marty stinnett small block rvw/pro275 car squats. Both southern speed racing cars. It’s all in setup. When the bars aren’t equal length the IC grows so when you have too much separation they can get wheelie happy from that as well
@RobD8283 жыл бұрын
@@SpeedProductions I think you need to research things a little further. Also keep in mind that the rear staying in the same location and the front rising is not the same the rear dropping which is what I would consider squat. Also please watch my shock video where I say “If the track is perfect I think you could take the coil overs out and just put solid bars in there place and do the same thing.” If the rearend isn’t moving this essentially what is happening. And you are correct with equal length bars growing.
@SpeedProductions3 жыл бұрын
@@RobD828 man I was just letting you know there is more than one way to skin a cat lol. I have seen the data from both cars and they both squat 1-1.5” as they progress down track.
@SpeedProductions3 жыл бұрын
And for what it’s worth I don’t disagree with any of the logic.