Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Post up any do it yourself how to's that does not have to do with counter steer chassis mods.
hamster82
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Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby hamster82 » Tue Nov 02, 2010 12:40 pm

Hi guys, saw many interesting DIY set up so i guess it's time for me to share mine, i always wanted to have a shock damper that have Soft compression but Hard rebound.

I was very frustrated as i couldn't get any KOSE shims K-1605 in Singapore and it's just too damn expensive to ship it in, but that doesn't bring me down. So i decided to DIY my own shims, the cost is low but very effective, espically on TRF dampers.

Ok enough of the blabbing, here is the set up.

1) First Up you need a Permanent Fine Tip marker, Clear plastic sheets (those use for protecting books covers), Scissors ( Preferably Curved )

2) Second picture shows the Washer that i used to mark on the clear plastic sheet, it's by HPI and the size is 3 x 8 mm for the inner and outer diameter. Part no. Z224

3) Third picture shows that the Washer actually covers half of the piston holes, very much like the Kose.

I AM USING 3 HOLE SHOCK PISTON BY TAMIYA, this is the best to work with.
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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby hamster82 » Tue Nov 02, 2010 12:55 pm

4) Mark out the Washer on the clear plastic sheet using the marker.

5) Fold the marked out washer for easy cutting, Remember to cut the smaller inner hole first.

6) Cut it out with a curve scissors, normal scissors will do fine too.
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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby hamster82 » Tue Nov 02, 2010 12:57 pm

7) Hamster82's SHIM Completed.

8) Second picture shows that the shim is actually covering the piston hole fully, for TRF shock damper this set-up is fine as i am using it. Reason is because the design of the trf dampers allows some oil to slip thru the piston from the side wall of the shock cylinder. So covering piston hole fully will result in optimum rebound rate.

However for HPI SHOCKS the shock oil will travel thru the piston hole fully therefore you got to cut the shim smaller, blocking the hole fully will result is VERY VERY VERY Hard Rebound, this has been tested and proven. To have a smaller Shim diameter this can be achieved by cutting away the outline of the shim, refer to PICTURE 3 For all HPI SHOCK PISTONS.

9)Third picture shows the size of how the DIY shim on HPI SHOCK Pistons should be. Outline of the outer diameter is being deleted. If still unclear refer to the next picture for comparison.
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hamster82
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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby hamster82 » Tue Nov 02, 2010 12:58 pm

10) Left DIY Shim is for HPI Piston, Right is for TRF Piston (Note the difference is size)

11) Install the shim to the piston and shock shaft.

12) Trinity #30 shock oil
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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby hamster82 » Tue Nov 02, 2010 1:00 pm

13) Getting ready to fill the oil

14)Read carefully for the next few steps, as i am going to explain how to install the shock oil such that the dampers will get the optimum rebound rate

15) First pour the Oil till the cylinder is 3/4 ~ 4/5 full

16) Push the shock piston to as high up as possible, this will ensure rebound rate is optimum. Slow yet responsive.
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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby hamster82 » Tue Nov 02, 2010 1:02 pm

17) Fill up the shock oil till the cylinder is full.

18) Cap the cylinder ~~~~

19) Repeat for the next 3 shock pistons.

Hope you guys enjoy what i have shared and have fun CS drifting. This idea is what i came up with after cracking my brain for a good few months, i am glad that i am still alive and kicking although less a few brain cells :D. If you guys dun understand any part just PM or post your msg i will reply them to the best of my ability. So wish you guys all the best in your dampers set-up ;)

VIDEO OF MY DAMPER SET-UP: http://www.youtube.com/watch?v=oM_QPKYFVIE
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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby Skodes » Mon Nov 15, 2010 2:53 pm

That is a very clever way of doing it, great job! Also from watching the video I can see it really does work very well indeed. :)

What effects/gains have you found it has given you on track though, added control or maneuverability etc?

...brilliant write up and great pictures too by the way. :up:
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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby hamster82 » Sun Nov 21, 2010 9:39 am

Hi sorry for the late reply, haha busy enjoying my CS drifting lately. Thanks for the positive comment

Some updates, i tested it out on my VDF works well, expect that the suspension position got to change. I tested on my 416 too and the result was amazing, the only thing i need to change was the ride height.

The results which i obtain are base off my local hobby track, and the results are no more fishing tailing, i am able to set a steeper drift angle, set the drift angle earlier and drag it through the corner and because my rebound is so slow i am able to maintain the drift angle.

The best thing about this set-up is that even if you screw up the corner, just a little tap on the brakes or just release the throttle, the angle will just set it there and allow you to continue drifting. ;)
Last edited by hamster82 on Thu Dec 08, 2011 3:43 am, edited 1 time in total.

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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby Skodes » Sun Nov 21, 2010 11:00 am

Good stuff!

Thanks for the reply. :)
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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby astra_x1101 » Mon Jan 03, 2011 4:40 pm

Awesome!! i saw so many videos on youtube like this one
http://www.youtube.com/watch?v=kKfS1SUGKOs&NR=1

allways wondered whats the secret about the slow rebound!! thanks for the great tutorial!!
will test it with my Yokomo Shocks immediately :D

what about this KOSE shims K-1605??? do they work the same way???
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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby hamster82 » Wed Jan 12, 2011 7:45 pm

Hi sorry for the late reply, have not been monitoring this thread.
The KOSE shims are made of very soft plastic, but they are also very durable. And yes they work the same way =)

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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby beetledrift » Mon Jan 31, 2011 2:38 pm

thanks for the info!
But where can i find these kose shims?

thanks

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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby hamster82 » Mon Feb 07, 2011 2:14 am

http://en.item.rakuten.com/hobinavi/4517613016053/

U can try this link, it's in jap. U got to email them and purchase thru pay pal. u can't just get them from the web

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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby beetledrift » Sat Feb 12, 2011 4:33 am

hi,

Thanks for the DIY tut! In combination with this tut I used Jilles Groskamp tips:
http://www.youtube.com/watch?v=sliCxsIZ3v4

And this was my result:
http://www.youtube.com/watch?v=2NXpwaOsQ0E

4 new rebuild TRF dampers with selfmade shims. The Kose shims are WAY to hard, it doesn't give you the effect you want.

hope this helps ;)

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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby AzNPuLSe » Sat Feb 12, 2011 8:55 am

I'm curious, in your tutorial the TRF shocks have no foam piece that go on top of the blatter before capping. My TRF shocks came with them, was I not suppose to use them? Actually I dont see the purpose for them.

Also, no where in this tutorial says I should wait for the air bubbles to come out. Should I be waiting for the air to come out? or just cap as soon as I fill the damper body.

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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby beetledrift » Sat Feb 12, 2011 9:15 am

AzNPuLSe wrote:I'm curious, in your tutorial the TRF shocks have no foam piece that go on top of the blatter before capping. My TRF shocks came with them, was I not suppose to use them? Actually I dont see the purpose for them.

Also, no where in this tutorial says I should wait for the air bubbles to come out. Should I be waiting for the air to come out? or just cap as soon as I fill the damper body.


indeed! don't put on that red foam piece, because actually your rebound get's harder!

and yes, also push the damperrod a few times up and down for the air bubbles to get out. otherwise there will still be air in your dampers ;)

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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby AzNPuLSe » Sat Feb 12, 2011 6:17 pm

Wow, night and day difference. Also, I think the oil I was using was too think. Thanks for the help.

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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby azeriu » Sat Feb 12, 2011 11:20 pm

This damper mod made the biggest handling improvement on my VDF. Thanks!
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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby hamster82 » Tue Feb 15, 2011 7:34 am

beetledrift wrote:hi,

Thanks for the DIY tut! In combination with this tut I used Jilles Groskamp tips:
http://www.youtube.com/watch?v=sliCxsIZ3v4

And this was my result:
http://www.youtube.com/watch?v=2NXpwaOsQ0E

4 new rebuild TRF dampers with selfmade shims. The Kose shims are WAY to hard, it doesn't give you the effect you want.

hope this helps ;)


Yeah I am using that right now :D

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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby hamster82 » Tue Feb 15, 2011 7:37 am

AzNPuLSe wrote:I'm curious, in your tutorial the TRF shocks have no foam piece that go on top of the blatter before capping. My TRF shocks came with them, was I not suppose to use them? Actually I dont see the purpose for them.

Also, no where in this tutorial says I should wait for the air bubbles to come out. Should I be waiting for the air to come out? or just cap as soon as I fill the damper body.


I did use the foam just that it's not show in the pic, but it's ok to use without it and yeah you got to let the air bubbles out first before capping.

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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby hamster82 » Tue Feb 15, 2011 7:38 am

Glad you guys enjoyed the Shocks :D, I believed CS drifting is more fun than ever.

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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby aliceisadog » Sat Feb 26, 2011 1:04 am

I have done this mod and it makes my vdf and ta05 handle awesome. I have only done the rear shocks on both cars do you guys use it on front aswell? I will give it a go next session to see.

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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby Automatix » Sun Feb 27, 2011 8:47 am

Thank you a lot for that sweet mod! Did it today in the morning and was playing all day in JB at nurhobby. That modification did an incredible improvement to my VDF.

rgds Manuel

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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby vongperson » Sat Mar 05, 2011 10:33 pm

looks like everyone is having positive results with this mod.

i have not done this mod yet but i'm trying under stand how this reduces fish tailing?
how did it improve the handling?

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Re: Hamster82's Secret DIY Shock dampers !!!!!!!!!!

Postby aliceisadog » Sun Mar 06, 2011 1:33 am

It slows the rebound of the shock which makes it less likely to shoot back in the opposite direction. Its hard to explain just try it and you will see what we are on about.


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