I believe you are doing a good thing by testing the functionality of the shocks. Is there a way to compare how they will actually ride versus other top brands like Ohlins etc.? Tia.
Yes, you can look at our ride comparison report at this link- www.dkcustomproducts.com/overview-of-performance-rear-shocks-99.htm And you can see a video of one of the hundreds of tests we've done with different shocks on different bikes here- ua-cam.com/video/Z4Dhg48_KQA/v-deo.html KP
In short, a shock dyno measures rebound and compression at so many inches per second in lbs. The complex part is tailoring the valving in the shim stack for a type of motorcycle with specific rider requirements. Have you ever ridden a HD with a twin tube design, TTX? With traditional damping you build more pressure across the main piston than what you have in gas pressure. If you put too much compression damping in that compression damper you will see cavitation. A big bubble forms on the bottom and you have no rebound damping in the beginning. Cavitation is localized boiling due to pressure drop through the valves. TTX technology connects gas pressure between the valves keeping it from cavitating because in a traditional damper you drop pressure on the bottom and you raise it on the top (a pressure differential) in the compression stroke. A TTX never drops pressure. It sees constant pressure on either side, totally equal. Ohlins TTX has been a game changer on all my Harleys!
Thanks for the comment. That is exactly what a shock dyno does...it measures the resistances of the compression and rebound damping at varying speeds/velocity. Thanks for the explanation of traditional shocks that still use only shim stacks for compression and rebound...even with the TTX it is still shim stacks doing it all. As you can see in the dyno chart in the video we are also using two completely separate circuits...one for compression and one for rebound. On ours the rebound also uses the patented IAS technology that is a completely different valving than traditional shim stacks. Here is a video that explains the IAS in more detail- ua-cam.com/video/N1cUpgNJ7i8/v-deo.html KP
There are ports in the piston, the valves have ports too, restricting flow to get some resistance to motion. The piston moves through the oil, while on a valve the oil moves through it. You need shims not just holes in the pistons because as the velocity increases in any size of an orifice the force it takes at the end of the shaft (the force it takes to put fluid through there) goes up to the square of the velocity. So what happens is you wouldn’t have any dampening, and at some point it would just saturate and your dyno curve would go skyward. It would just hydraulic. There’s a point it wouldn’t pass any fluid and it would just stop. The shims are there to adjust your dyno curve. Currently, Ohlins has 100% of the paddock in Moto GP, Moto 2 and Moto 3 running their unattainable set ups😆 World Superbike is at 95% and Moto America is it 90%. I hope to see your design competing at the highest level on tracks all around the world! Competition is like a high tide,, lifts all boats! I will agree on this,, getting control of your valving is critical for your Harley Davidson motorcycle! Everyone knows that breaking and suspension are not Harley Davidson’s strong suit.. unlike their masterful task of extrapolating money after the fact to fix everything. P.S. I saw your video on trikes the other day. I’ll just say this.. my opinion, only ,, the best thing you could do for your trike is a bill of sale! Okay, I’m done. Great video as always.
Thanks for the comment and compliments. Glad you are liking the videos and parts. Yes, on all you said about how shocks work...but there is still another component, in addition to shims, pistons, bleed holes of various sizes and positions...there is the IAS valve, and that is what makes a difference you can feel in riding and also why our shock dyno charts look so different from the typical chart. Nah, I don't see us ever working on shocks for the race circuit, just like we don't plan on making shocks for Honda's, Suks, or Yammys....just not our market. Our market is the Traditional HD and that is what we are focused on. Thank you! 👍😎👍 KP
I know you will be very happy with the ride quality! Please feel free to call or email us if you have any questions; Support@DKCustomProducts.com Thank you for your business and for commenting! 😎MB
I believe you are doing a good thing by testing the functionality of the shocks. Is there a way to compare how they will actually ride versus other top brands like Ohlins etc.? Tia.
Yes, you can look at our ride comparison report at this link- www.dkcustomproducts.com/overview-of-performance-rear-shocks-99.htm
And you can see a video of one of the hundreds of tests we've done with different shocks on different bikes here- ua-cam.com/video/Z4Dhg48_KQA/v-deo.html
KP
In short, a shock dyno measures rebound and compression at so many inches per second in lbs. The complex part is tailoring the valving in the shim stack for a type of motorcycle with specific rider requirements. Have you ever ridden a HD with a twin tube design, TTX? With traditional damping you build more pressure across the main piston than what you have in gas pressure. If you put too much compression damping in that compression damper you will see cavitation. A big bubble forms on the bottom and you have no rebound damping in the beginning. Cavitation is localized boiling due to pressure drop through the valves.
TTX technology connects gas pressure between the valves keeping it from cavitating because in a traditional damper you drop pressure on the bottom and you raise it on the top (a pressure differential) in the compression stroke.
A TTX never drops pressure. It sees constant pressure on either side, totally equal. Ohlins TTX has been a game changer on all my Harleys!
Thanks for the comment. That is exactly what a shock dyno does...it measures the resistances of the compression and rebound damping at varying speeds/velocity.
Thanks for the explanation of traditional shocks that still use only shim stacks for compression and rebound...even with the TTX it is still shim stacks doing it all.
As you can see in the dyno chart in the video we are also using two completely separate circuits...one for compression and one for rebound. On ours the rebound also uses the patented IAS technology that is a completely different valving than traditional shim stacks.
Here is a video that explains the IAS in more detail- ua-cam.com/video/N1cUpgNJ7i8/v-deo.html
KP
There are ports in the piston, the valves have ports too, restricting flow to get some resistance to motion. The piston moves through the oil, while on a valve the oil moves through it.
You need shims not just holes in the pistons because as the velocity increases in any size of an orifice the force it takes at the end of the shaft (the force it takes to put fluid through there) goes up to the square of the velocity. So what happens is you wouldn’t have any dampening, and at some point it would just saturate and your dyno curve would go skyward. It would just hydraulic. There’s a point it wouldn’t pass any fluid and it would just stop. The shims are there to adjust your dyno curve.
Currently, Ohlins has 100% of the paddock in Moto GP, Moto 2 and Moto 3 running their unattainable set ups😆
World Superbike is at 95% and Moto America is it 90%. I hope to see your design competing at the highest level on tracks all around the world! Competition is like a high tide,, lifts all boats!
I will agree on this,, getting control of your valving is critical for your Harley Davidson motorcycle! Everyone knows that breaking and suspension are not Harley Davidson’s strong suit.. unlike their masterful task of extrapolating money after the fact to fix everything.
P.S. I saw your video on trikes the other day. I’ll just say this.. my opinion, only ,, the best thing you could do for your trike is a bill of sale! Okay, I’m done. Great video as always.
Thanks for the comment and compliments. Glad you are liking the videos and parts.
Yes, on all you said about how shocks work...but there is still another component, in addition to shims, pistons, bleed holes of various sizes and positions...there is the IAS valve, and that is what makes a difference you can feel in riding and also why our shock dyno charts look so different from the typical chart.
Nah, I don't see us ever working on shocks for the race circuit, just like we don't plan on making shocks for Honda's, Suks, or Yammys....just not our market. Our market is the Traditional HD and that is what we are focused on.
Thank you! 👍😎👍 KP
Wow you guys have come a long way great job 👏 Keep up the good work 😊
We will! Thank you for commenting!
😎👍👍
Glad you like the video! 👍😎👍
Will be ordering a set for my trike in about 2 mo
I know you will be very happy with the ride quality!
Please feel free to call or email us if you have any questions;
Support@DKCustomProducts.com
Thank you for your business and for commenting! 😎MB
Yes, good show
Glad you like the video! Thanks for commenting! MB