Shock Tech Ep. 1: Piston Designs
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- เผยแพร่เมื่อ 16 ส.ค. 2017
- In this video we go over some different piston design standards used in the industry and how they affect your ride quality.
For more info check us out at accutuneoffroad.com/ - ยานยนต์และพาหนะ
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One of the best videos I've seen explaining damping charts! This and your article really helped me understand suspension a lot better, and I'm actually trying to understand so I can pick a setup for my road car, not even offroad. If you wind up doing more videos, I'd love to see one explaining gas pressures.
Very informative video! I just put a set of BC coilovers on my subaru with 7kg/mm swift springs on all 4 corners with linear valving. The ride quality/handling on smooth twisty roads is absolutely amazing but living in Ohio forces me to deal with lots of road imperfections and bumps which are much more uncomfortable now with the coilovers. It would be interesting to see a video of someone running a digressive, then linear, then progressive shock on the same set of coilovers on the same car, to see the real difference on the road.
Great information!
After watching hours of videos looking for the answers to Bilstein Digressive or KYB Progressive. I finally found them in your video. I have a Ram sport thats 2wd and 100% street truck and, want to upgrade the ride comfort and handling. After hearing you state to let the sway bars do their designed task so the shocks can do their designed task it makes better sense. Thank you!
Awesome glad this video could help you out! It's an old one, but a good one.
Great tech, many people see shock tuning as wizardry. Good to see some of the tech and physics on how shocks work. Hope to see more in the future!
Thank you! We've got a ton of them lined up. Is there anything specific you'd like to see?
I like the highly technical stuff. Also maybe some basic stuff, like spring rates, shock angle, etc.
Bad autofocus, good tech info! 🤣
Thanks for the video!
If I'm understanding this correctly, for the washboard/ pothole trails that I liked to run, I should look for progressive valving?
I have Falcon 3.3s and on the lightest setting I'm still not getting the damping I want from washboards to speed bumps.
What is your recommendation, thanks!
Hey Ryan,
Can I know on what formulae and equations will you design digressive, linear and progressive piston?
If you have any excel sheet or formulae sheet can you please share.
If you want a smooth ride on highway at faster speeds, the linear shock is better? Did I understand it right?
Where would factory shocks typically fall? Say, for example, the stock Rancos on Z71s that so many seem to complain about?
I think this answers my question, i was thinking fox 2.0 all around (2in lift in front 1 in in back) and add a rear sway bar to my 2500hd 2001, it sounds like the best way to go, right? instead of 5100s
Yes 2.0 RR would be a good option. If you would like to discuss more, please contact our sales team Sales@accutuneoffroad.com
What I want to know is at what point you will see shock fade. From my understanding it’s not just the bumps but how often you hit bumps. If you’re traveling down a dirt road and hit a good size bump every couple miles does it have the same effect if you was driving a mile of nothing but bumps. I probably could put money down that 90% of people won’t notice a difference from the three types on normal driving and most off-road use. I think the only time the type of piston and valving comes into play when you build a truck that’s built to travel for long distances and hit a lot of whoops. I would like to know at what speed does each piston see a difference.
How do adjusters (DSC) change this?
Thank you for the over view. I'm curious about your statement of having sway bars do the handling while the coilover/shocks to do the damping. Is this true mostly for off roading? I don't offroad and have a DD coupe. Looking to upgrade my coil overs so that I can be faster in my AutoX/track events. In that scenario, should I still be looking into digressive design?
Lots of street cars are adopting the stiff sway bar, soft springs technique, because it leads to a more comfortable ride. Not running any sway bar and doing all the control with shocks, springs, and geometry is faster and less comfortable. Somewhere in between is where you want to be.
AccuTune Off-Road got it, yeah my car has stock sway bars. I guess I will just need to research more on the specific spring rates for what most people run then. Cheers
Are small bumps and handling really similar (low) velocity? I would think that hitting a small (1") square edged bump in the road at 30-60 mph would produce much faster piston velocity than handling and body lean does.
It's not possible to be digressive for only very slow range, then open up for small bumps?
In the case of small bumps it's more about how much the shock is moving than the speed it moves. With soft low speed damping it lets the shock move that small amount without getting into the high speed valving.
You mentioned that you let the sway bar to the handling. I removed my sway bar with kings on my 5th gen 4runner. Should I reinstall it to get better performance?
The Toyota ifs sway bars are stiff and the bushings seem to have a lot of friction so they’re detrimental to ride quality. A lot of people get away without them, but everyone has different preferences and if you want better handling then I’d put it back on. Toyota ifs applications are some of the few where our valving will get you better handling, simply because king valves them so soft.
AccuTune Off-Road thanks! just to clarify better handling on or off road?
Nick M. It’ll be crisper handling on and off-road and won’t bottom out as easily.
Can you tell me how to match the piston shim to the resistance required by each car?
罗汝恒 We use proprietary AccuTune Equations, but it can also be done with a lot of testing and tuning.
Thank you Can I ask you some other questions? How can I contact you? WhatsApp？
Nicely explained.
I am designing shock absorber for my BE(mechanical) project.
But getting messed up with calculations (like - what to take flow rate, design of valve, floating Piston) I have literally sent a mail to FOX for help😅 in hope they will help.
Now, asking you for help.
Please help me out.