Steering Knuckle Modification

**superclarkey** · 01-01-2009 22:23

i need a picture of the hubs really mate, can't tell what the problem is from that.

you sure the wheels are zero toe before locking them over ?

**mr2** · 01-01-2009 22:28

Ok mate will do.. And no there not 100% zero toe thats tomorrows job..

Im pretty sure that if i align the toe as good as i can by measurements its still going to have the same problem???

I'll get some more pics tomorrow after ive finished and some better shots of the modded steering knuckle.

**mr2** · 01-01-2009 22:33

Right just been thinking a little bit more about this and by looking at this...

Gokart Engine & Chassis Tutorials

What ive done is really increased the ackerman angle instead of reducing it.

So in theory if i can move the knuckle further away from the rack it will reduce the center line and in theory it will reduce the ackerman angle?

**superclarkey** · 01-01-2009 22:34

looks as tho what you have done is made the ackaman angle worse.

**mr2** · 01-01-2009 22:37

Originally Posted by superclarkey

looks as tho what you have done is made the ackaman angle worse.

Yeah thats right... so to reduce it you would have to bring the center of the steering knuckle joint in line with the centre line of the bottom ball joint?

**superclarkey** · 01-01-2009 22:39

yeah, are yours like mine, or further away from the center line ?

**mr2** · 01-01-2009 22:41

Yes mine are very similar if not identical...

**superclarkey** · 01-01-2009 22:42

odd, mine are almost inline when looking directly down. what about rotation of the hole were the tie rod end ball joint goes in ??

**mr2** · 01-01-2009 22:44

Originally Posted by superclarkey

odd, mine are almost inline when looking directly down. what about rotation of the hole were the tie rod end ball joint goes in ??

Im lost do you mean... the curve it folllows when turning from lock to lock?

**superclarkey** · 01-01-2009 23:05

The bit you've cut and shut, did you rotate it or keep it the same angle ?

Clarkey.

**Dan drift** · 01-01-2009 23:09

locku ian

**mr2** · 01-01-2009 23:17

Originally Posted by superclarkey

The bit you've cut and shut, did you rotate it or keep it the same angle ?

Clarkey.

kept it to the same angle.. ive got a few little ideas in my mind now and some drawings im going to have a play tomorrow and see what i can achive!

I'll keep you updated.

Cheers dan yeah would be mental to have such amazing lock if it was the same both sides!! lol

**gunner** · 01-01-2009 23:24

anyone can cut and shut them?
The Japs have been done this for years, took them a few years to get it right, as you can drastically mess the handling aswell!!

The key is getting the right position and angle of the tie rod end ,i have RYO ones and they are different to the above, but that would be telling.....

My advice, buy proper ones you know they work, tried and tested

**superclarkey** · 01-01-2009 23:39

I've seen the hubs you've got, and many more like it, i'm not new to this btw

This is how i've decided to mod them to work best for me, i had some on my R32 and they were amazing, i'm going to be cutting the knuckles in half and spacering the lower ball joint down for rollcenter adjustment

I've mesured up a few sets, included the posh ones phil has on his s15, so i know what needs to be moved.

clarkey.

**royal** · 02-01-2009 01:07

Have a look at this Ian, it has an interesting way of doing it, pictures and info.
New Japanese brand's debut in the USA: Parts Shop MAX - Page 47 - Zilvia.net Forums

**royal** · 02-01-2009 01:08

lowered the pickup point to prevent bumpsteer as well

**-WJ-** · 02-01-2009 10:39

been running welded knuckles for 3 years now, no problem. Pics in my project topic (for a long while btw

).
Oh, and the knuckels arent cast iron. They're forged. Cast stuff would just break, and impossible to weld neatly.

**superclarkey** · 02-01-2009 10:58

thought they were forged but was unsure to put my name to it

clarkey.

**Greg** · 02-01-2009 11:27

Originally Posted by mr2

Right here we go...

Now both the modded knuckles are the same length and same angle and so on and theres no lock stops on the lower arm..

Ive got a headache trying to figure out why the angle of the wheels are soo different??

Yeah that definitely looks like you have increased the ackerman not decreased it, i have mine directly inline with the bottom ball joint, only thing im now worried about is the wheel touching the tension rod.
Me an Clarkey are going to test fit ours today to compare so will hopefully get some pics up later.

**-WJ-** · 02-01-2009 13:07

Clarkey, try welding an exhaust manifold, you'll immediately know the difference

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