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View Full Version : New Atomic MR03 Alm. Knuckle


Felix2010
2010.04.19, 04:25 PM
Hello,

I just saw this part on sale:

#MR3-019-B

MR-03 Alm. F.S. Steering Knuckle 0-degree

Can you tell me more about this? What does the "F.S." stand for? Also, is there anything different about this knuckle from the stock Kyosho unit except for that it is alloy? Is this knuckle "Low-Down" or anything like that?

Also it seems many times now, Atomic puts out parts but doesn't go into much detail about what they are or what they do exactly. It would be great if more detail could be put into the description of new parts.
Thanks:)

Atomic-USA
2010.04.19, 05:56 PM
Here is the information:

F.S. stands for "Finest Setting". I'll explain it a few messages below.

Rune
2010.04.19, 06:02 PM
I think the "axles" and the tie rod connection part are in ti. I have no idea what FS stands for.
I agree with you on ATM giving to little detail on their products lately.
Looks nice though:)

Tjay
2010.04.19, 06:36 PM
http://www.rcatomic.com/atomic/components/com_virtuemart/shop_image/product/48320a4d563a4adce26f109bc4be8f13.jpg

EMU
2010.04.19, 06:45 PM
FS probably means Front Suspension, although I could be wrong about that. The pictures look like the axle and steering pin may be a different material (SS or Ti possibly). When I get a hold of some, I will post more about them...

Atomic-USA
2010.04.21, 09:04 PM
Features:

-Ride Height lowered by 0.5mm compared to Kyosho stock Knuckles

- F.S. - (Finest Setting) prevents outer front knuckle's Pivot Ball disengagement under hard cornering and chassis roll . (Shim is not included)


The MR-03 knuckles move up and down and also at a slight angle towards the chassis when front suspension is compressed. This is why there is a little pivot ball there while the MR-02 didn't have it.

When outer suspension is fully compressed(as in hard cornering), the pivot ball may come out from the ti-rod resulting in unwanted imprecise movement. Lowered cars are more prone to have this problem.

With the removable pin a racer may add a shim in between to lower it, so that the pivot ball stays inside the ti-rod. See photo for reference.

http://www.rcatomic.com/atomic/components/com_virtuemart/shop_image/product/48320a4d563a4adce26f109bc4be8f13.jpg

Removable pin design:
http://mini-zracer.com/forums/attachment.php?attachmentid=29684&stc=1&d=1271897705

Stock setting(pivot ball is exposed under hard cornering):
http://mini-zracer.com/forums/attachment.php?attachmentid=29685&stc=1&d=1271897705

With shim adjustment(pivot ball stays within)
http://mini-zracer.com/forums/attachment.php?attachmentid=29686&stc=1&d=1271897705

chad508
2010.04.21, 09:26 PM
pretty slick. by any chance is the axle threaded also? would be nice to shim wheels in and out also.

Atomic-USA
2010.04.21, 09:39 PM
*See latest post with photos

Tjay
2010.04.21, 11:14 PM
.5mm lower than stock. That's cool. Not too low and not stock height either. Just right! Then adjustable knuckle pin? That sounds perfect!

phea
2010.04.22, 03:33 AM
Nice, cant wait to get try em out.

Rune
2010.04.22, 09:22 AM
Really nice!
These will definetly go on my car.

The problem I have encountered with alu knuckles combined with alu tie rod are binding. The anodicing wears of, and they start to bind. Here this problem looks to be well taken care of.

The adjusting possibilites also looks really great.

BR
Rune

doug01n
2010.04.22, 09:44 AM
This is one part that I plan to put on my car too... When and where it'll be (or it is already) available?

Thanks!

chad508
2010.04.22, 10:11 AM
i saw them on egr the other day

EMU
2010.04.22, 11:41 AM
They are available at HKS Hobby as well ;)

Atomic-USA
2010.04.22, 12:18 PM
NYRC has a couple left for the local racers in NYC

doug01n
2010.04.22, 02:01 PM
EGR is the best place for me at the moment.
Found it there! Thanks!

Atomic-USA
2010.05.11, 01:02 AM
For the new MR-03 knuckles; both the steering pins and the shafts where the wheel bearings go are adjustable. As a result you can achieve variable wheel offset by shimming the shafts. See photos. Remember to use thread lock at all times. Needle nose pilers are required for the job. Don't worry you will not scratch the pins or drive shafts with this design.

Side view:
http://mini-zracer.com/forums/attachment.php?attachmentid=29817&stc=1&d=1273553858

Loosen and tighten:
http://mini-zracer.com/forums/attachment.php?attachmentid=29815&stc=1&d=1273553858

Loosen and tighten:
http://mini-zracer.com/forums/attachment.php?attachmentid=29816&stc=1&d=1273553858

Put shims and thread lock(not too much)
http://mini-zracer.com/forums/attachment.php?attachmentid=29818&stc=1&d=1273553858

Atomic-USA
2010.05.11, 01:03 AM
Product shown

http://mini-zracer.com/forums/attachment.php?attachmentid=29819&d=1273554213

Roger
2010.05.11, 04:48 AM
Sai. That is very nice on how you can adjust the offset.