PD Simplified : Motorcycle Suspension Explained | Part 2 - What Is Compression Damping?

As Shumi explained in the first episode of this four-part series on motorcycle suspension, its job is to keep the wheels firmly in contact with the ground. In part 2, we take a closer look at the compression damping. Essentially, it is controlling the rate at which the springs compress. It gives control over how the spring reduces in length as the wheel climbs up a bump in the road. Not all motorcycles have adjustable compression, but there are ways to go around it. Shumi explains it all in this episode of PD Simplified.
#PowerDrift
Join the 2 Million strong #PDArmy : bit.ly/PDARMY
Stay updated with News, Behind the Scenes here : / powerdrift
T-shirts, Badges & More official merchandise : www.powerdrift.com/merch
Find us on Facebook: / powerdriftofficial
Follow us on Twitter for Launch updates & more : / powerdrift

[@powerdriftofficial]

Hey #PDArmy, we hope this helps you understand compression damping. If you have any doubts or queries, ask us below. Hit that Like button if you wanna see more of these.

[@karthikd03]

You said "if your front forks take 212 ml of *fuel* ". Do dampers have fuel in them?

[@BaljinderKaur-dq2bg]

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ŕrrerwrr5r4w4rrrrwrr5r544rr5rŕr4rreŕrrw4rrr4w4rrr4r⁴r4w4rrw4rrrrw4w445r5e4rrr4r4wrw4e5r54rerw4rr44re4444rr44rrrr4rw⁴w4rrrr4rrrrw44rrrrr5rrr544rrr4r5rrwrrrwr5r4e5wrrrrr4rw4r4rrwrr4w4rrr4r5rrw4r4rrr4w4w4rrw444rrrrr5r5rrr5rrrrrrrr4rr4r44rer4rwrwe44r4rre4r5rrr44rrrrrrrwrwrr4r444rr4r44rr5r4rrrrrrrr5rrrrrrrrwrwrr5rrrrw4rrr4r4rrrrrr4r4rrr4r4w5r4r4rr4rrr5err4rw44re4r4rrrrwrrrrr44rrrw54ŕr4w4w4wŕwrrer444rrwrrrw4rrw4e4e4r4w44rrŕrr4řrreŕr4r5r544rŕrrr5rrrrrre4r5rr44rŕrŕrrrř4řr5rŕrŕr4rŕrŕr5rrrŕrŕ4ŕwŕ4ŕ4ŕ44r4re4ŕrře4

[@ashwinikumarkishan7453]

Waiting for swingarm videos

[@labanyadevi7984]

L

[@RanjuDevi-vh9zm]

0

[@rajdeepchelsea]

Love the way Shumi takes a halt after completing a sentence, giving time to us to sync in.

[@TheAnirude]

Feels wrong to see these videos for free!! Great content…

[@powerdriftofficial]

Haha! You can always Like and Share them! All our content is free for the #PDarmy!

[@MrSiddharth25]

Shumi, the sensei, imparting knowledge like no other.🙌🏼 Great explanation man!🤘🏼 Waiting for the next one.🤓

[@powerdriftofficial]

Amen! Stay tuned for more!

[@skrmanglam]

Much needed series for new riders. Thanks PD! 😀

[@karannair8789]

Crisp, simple and to the point; another one of the reasons that make PD standout 🔥

[@adityakambli6495]

crisp ! my engineering professor failed to explain same in his 2 hr long lecture. Shumi did it in 8 mins

[@ashutoshpargaonkar]

Haha Shumi can be a very favourite and on point professor in engineering!!!Isn't it?😅

[@sumitsinghamofficial]

you are the best when it is explaining somthing.

[@sudhirakupatni]

Now we know the answer to why shumi owns a multistrada :) fully electronically adjustable suspension !

[@TheJOVVA]

Very clear explanation, thanks!

[@DayumSonny]

Another great Power-Pod. A mixed feeling of a friend telling you something their passionate about and a professor talking about your favorite subject. Thank you, Shumi and Team PD. 😌 🙏

[@k.sohailofficial]

This series is just amazing... Awesome work guys.

[@AshishTamhane]

Great explanation! Thanks!

[@lalitkhopade6747]

Because of knowledge given by Shumi sir, I decided to change front suspension of my Interceptor. Thank you Shumi sir. 🙏

[@mrsaini2784]

Gonna “mess” with my suspension’s preload adjustment setting tomorrow itself… in Schumi we trust!! 😊

[@onkargadale]

Forgot to like the video came back and hit like button 🤗☺️

[@sumit6972]

Content level - ultra MAX Pro🔥🔥

[@themotopilott256]

We want more simplified videos💗💗💗

[@shu_mar]

Coming! 😀

[@ianwright782]

where did part 3 go? I only see 1, 2 and then 4. Really enjoying it though.

[@cksajeevkumar]

Simple and useful. Great.

[@niteshsingh656]

Dude...you rock !!👍

[@keshavpandey6417]

That's such an insight shumi... thx.

[@akshaybabu2971]

1:41 thats what HE said 😂💯

[@supratimdey1230]

Hiiii PowerDrift...... Appreciate your efforts!!!!!!! 🏍️💥🏍️

[@sathishmechy]

Splendid!

[@allwynlobo8773]

Hey team.. please if you can also have a similar session on idle rpm and topics surrounding that.. Basically to understand the correct idle rpm for each of our bikes

[@onlyudi6217]

Was always worried about adjusting my d390 suspension if i mess it up..after this I need to give it a try myself...trial and error..is shumi's way..

[@shu_mar]

Just remember to keep a note of the changes you make so you can undo errors

[@onlyudi6217]

@@shu_mar thanks sensi

[@Tanuj_utube]

Except the rear preload you can't change anything without modding the bike

[@basantakumarsahoo2529]

@@onlyudi6217 .

[@adityakalidhindi336]

I would have passed the automobile engineering subject. If this video uploaded just 2days before.... Damn it's much easier then the text book...thanks shumi😎

[@yuthis16]

Please talk about different types of handlebar and their functions

[@shu_mar]

Can do!

[@yuthis16]

@@shu_mar thanks sir

[@jakgt500]

How does changing the oil quantity vary the degree of damping. I don't get it.

[@_sam317]

If you have to choose. Adjustable preload and rebound Or Adjustable preload and compression?

[@shashankrao6202]

❤️❤️❤️ PowerDrift

[@shu_mar]

❤️❤️❤️

[@avitestrce]

Hi Shumi, can you do a video on bike alignment. Background: when riding my bike i feel they arent moving in the same direction. Feels like front wheel wants to go one side and rear is stuck elsewhere. Specially on roads having a bit of undulations. How do i know if its the rear wheel which is mis aligned or front forks or if its because i have added puncture proof sealant in my tube or if its a bend in my chassis. Question: how to analyse and arrive at the what is the cause. The RE service guys never feel a problem in the bike no matter how many times i tell. The only solution is they adjust the T BAR a bit which i feel isnt the solution

[@neelpalwankar1869]

can you please explain how will changes in compression damping impact cornering stability.. Thanks

[@Krom1hell]

I had once on an XC bike suspension that had two funny signs: bunny for high compression/rebound and turtle for low compression/rebound :)).....

[@tshlbzhx1982]

Hi. I have a norm in mind need to understand. what does a Motor slip regulator do? Tks！

[@dharrshane1449]

Dear shumi can you please do video on various suspension in cars... And working of frequency selective dampers...

[@rowdychaithanya7217]

Mr. Shumi sir with your explanation and creative content I'm changing into automobile mechanic for my machines. Thank you 😊 have a good day sir 👍🏻

[@WingsofOil]

Can changing the fork oil grade can have a possible effect on Compression damping ?🤔

[@hardstonedevil]

Can we have this series renamed “Shumified”?

[@danielravi9317]

Hello Sir good evening What about mono suspension degree between swing arm and chassis

[@himanshuvaishnav3123]

I hope we'll see how to make DIY Suspension Tuning for the most common bikes with no adjustable suspension

[@aniruthparamasivan3441]

Hey PD !! Why is it necessary to change the fork oil every year ??

[@shu_mar]

Because fork oil wears out and sludge accumulates. Wear out = can’t do it’s job. Sludge = gets into things and stops them from working properly

[@nitin9837560]

@@shu_mar why Don't Authorised service center do it ?

[@aniruthparamasivan3441]

@@shu_mar thanks brother.

[@nitin9837560]

@UCZwKlN5TsqGMlDnUo6KP9Mw yes...That's the reality of every Manufacturer...They do not follow service manual, I am experiencing it with My Ns200....20k km. Done .... A week back I got 6th service done....They din't check/do anything except changing the Engine oil...Lubing the chain...And changing rear disk pads!

[@aniruthparamasivan3441]

@@nitin9837560 I agree to this, service centres have to really keep up with the manual. They look at me and say it's okay when I point out a job which was in the manual and not done.

[@Tanuj_utube]

I ride a Duke 250 aand it usually starts wobbling above 125 kmph. Will reducing the compression damping ( reducing the fork oil) help ?

[@adeebchand]

Please let me know how can I increase the suspension travel, some say if we temper the spring at certain temperature and pull it outward it will increase the travel, but I think that isn't a safe way to do it.

[@shu_mar]

No safe way. The only safe way to change the length of travel is to buy a new, longer unit. But this is a big change to make. I just wouldn’t bother with it.

[@adeebchand]

@@shu_mar thankyou sir, we all are really proud to know you, I'll ride to your location and meet you in person one day ❤️ keep spreading you knowledge

[@rakesh3967]

Simplified 👌🏻👍🏻

[@anamitraroychowdhury6502]

What should be the idle interval in km of changing the fork oil?

[@shaheb007]

What's the thing with the different types of suspension? The Ola scooter comes with a horizontal suspension at the rear.

[@vfrfandom3904]

There is an art to set up the suspension ....not bounce the forks a few times.... in any case the forks are supposed to return and stop....and settle down a bit as well..but still want to understand the science, then study the Kawi kdx 200... that will simplify

[@abhitsinha8813]

Sir can u make a video of using a hydraulic clutch vs normal wire clutch. It is worth for installing hydraulic clutch on a normal bike???

[@bohemianpritam]

❤️❤️

[@fullstarlaming7937]

Crazy how shumi doesn't wear a sweater in winter 🤨

[@notimefordreamz]

Please make something for us Scooter Enthusiasts also, i ride an BS6 125CC HONDA Activa !!!!!

[@devendracabral6146]

❤❤❤

[@girishd5075]

Great content 👌👌👌 I have a question. When I asked my local mechanic to adjust the suspension of my FZ V3 to a little bit harder setting, he said if we change it to harder/softer setting, then, 1. will impact the life of chain sprockets. 2. So chain has to be frequently checked or observed if it is getting tighter/looser or not. Hence he said not to mess up with the tweeting suspension. Is this true? Please share your thoughts.

[@aniruthparamasivan3441]

I feel the suspension setting doesn't have anything to do with the chain and sprocket sets. Because the tension in the chain is adjusted with the bolts in the swing arm.

[@yash9410503314]

I'm pretty sure tuning your suspension doesn't affect the chain and sprocket in any way.

[@girishd5075]

@@yash9410503314 Yes, I too felt the same. Thanks for sharing your thoughts 👍

[@girishd5075]

@@aniruthparamasivan3441 👍👍

[@abyyy490]

I think your mechanic is illiterate regarding suspension stuffs .

[@Harkumar.Baishya]

PD can easily list these simplified episodes at any online course portal and people will pay to learn these. Shumi is great 🙏

[@tamilan2514]

Hi Bro, I TVS apache 160 4v special edition having issues with the clutch. While riding in 4th & 5th gear, there is a slight clutch is applied automatically while throttling, once we release the throttle the clutch lever released fully. The bike is new and the km driven only 2000km. Mileage is 35 only and max speed once we reached 105, it loss the power. Any solution, TVS mechanic not able to identified the issues. They try to change the clutch plates, but the problem not solved. Any solution

[@tamilan2514]

Mileage calculated in urban mode with 30 km average speed

[@ganjay_goblin]

👀

[@rutwikkarekar4666]

Rutwik Karekar

[@sambitparija94]

My mechanic said if i do rear suspension more softer it will lead to breaking of suspension and i won't even notice when it broke😅

[@dileepkumar-zt8ix]

Pls doo front suspension click settings video for apache 🥺🥺

[@samudragupt473]

Why does fork oil needs to be changed ?

[@ronniepatil7953]

Waiting for next episode 🧡😀👍🏻

[@powerdriftofficial]

Coming up soon!

[@tarun_M1710]

Like first watch later

[@shu_mar]

21st!

[@legolash8370]

Shumi, does heavy oil weight help stiffen up front? Compresses with less resistance that i would like

[@jvillain9946]

As a Harley rider the only compression I need is getting my shit compressed bruther

[@jagdishjoshi1137]

Want to buy a super bike under 10 lacs which one do you suggest I am 6'2 Need a comfortable ride without bending too much in front with normal foot pegs Thanks

[@RahulR-ux7wb]

Nothing much 👍

[@aniketpal2420]

Day 131 of asking PowerDrift to bring back Holy Shift Season 2.

[@anupamtheboss4536]

What?? Adding More Fork Oil than factory Recommend will blow up the Oil seals in your front forks... wrong information Never do that.

[@saurabhrana2534]

Adding or removing small amount won't hurt. Does your tyre blow if you fill 1.5-2% of more air,does your engine blow if you fill 1.5%-2% more oil? While we know overfill of engine oil is equally bad as having less oil in engine.

[@saurabhrana2534]

Machines are designed to have some tolerance.

[@rajeshdubey1664]

L

[@shashankmongrel]

Bajaj manual doesn't have shit!!!