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Old 02-14-2014, 06:06 PM   #1
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Default King Pin angle question

I need to get a few extra front spindles for my mtx 3 and I see they have one listed with 1*degree built in and I could use the ones from the mtx4
but it says it has 2*degrees. what does the difference in degrees do for the car(handling) and does it change caster? thanks, always learning.
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Old 02-14-2014, 06:42 PM   #2
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The more vertical the king pin is, it makes the car turn more. The more you lay it back, less steering.
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Old 02-14-2014, 07:19 PM   #3
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yes I understand that point but is this the same as adding or subtracting caster spacers?? so the 2* that is built in is giving me a 2* twards the total caster?? thanks,mike.
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Old 02-14-2014, 11:21 PM   #4
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Yes that's correct.
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Old 02-15-2014, 03:30 AM   #5
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Quote:
Originally Posted by Mikiehotrod View Post
yes I understand that point but is this the same as adding or subtracting caster spacers?? so the 2* that is built in is giving me a 2* twards the total caster?? thanks,mike.
Quote:
Originally Posted by dan_vector View Post
Yes that's correct.
This is not correct.

The kingpin angle is the angle the upper and lower pivotball make when viewing the upright from the front.
Caster is the angle the upper and lower pivotball make when viewed from the side.



The kingpin angle influences the scrubradius.

What it does in terms of handling:

More kingpin inclination will improve corner speed and on-throttle steering. It decreases off-throttle steering and makes the car less nervous.

Less kingpin inclination gives the car more off-throttle steering.

Changing the kingpin inclination, offset and camber can really make or break the front end of a car, especially the initial reaction.
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Old 02-15-2014, 03:42 AM   #6
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Quite right my bad. I understood the OP was asking a different question.
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Old 02-15-2014, 10:47 AM   #7
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Is kingpin angle the same as camber angle?
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Old 02-15-2014, 11:15 AM   #8
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Quote:
Originally Posted by GPXJOE View Post
Is kingpin angle the same as camber angle?
Have a look at the diagram above. Camber angle is the angle of the wheel in relation to vertical whereas kingpin angle is the angle between the upper and lower pivot ball when viewed from the front of the car. The description DS makes is perfect and very well made.
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Old 02-15-2014, 12:22 PM   #9
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DS motorsport has the correct answer and explaination.

I have mtx3 ..... kingpin position more incline, the more steering on power throttle and also off power on middle speed corners.

If u want to get more steering from mtx3 ..... you reduce rear toe in to 2.5 degree or 3 degree. Try that.
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Old 02-15-2014, 01:02 PM   #10
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DS nailed it. Look at his diagram and understand it.

Caster, camber, king pin angle (also called steering axis inclination) scrub radius, pin lead/trail, ackerman, etc. are all completely different things with different interactions. Learn them to your benefit.

Read this for more depth:

http://www.eviltwinmotorsports.com/w...ter-2005.1.pdf
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Old 02-15-2014, 07:58 PM   #11
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Quote:
Originally Posted by wingracer View Post
DS nailed it. Look at his diagram and understand it.

Caster, camber, king pin angle (also called steering axis inclination) scrub radius, pin lead/trail, ackerman, etc. are all completely different things with different interactions. Learn them to your benefit.

Read this for more depth:

http://www.eviltwinmotorsports.com/w...ter-2005.1.pdf
thank you to ALL that replied! that was a very good read.i understand some of it.i really was not looking to add or take away steering,was just looking to replace spare parts.i guess I will have to see when the time comes to replace a broken one (1*) with 2* splindle how it really affects the car.who knows it actually might be a good thing.have been into on-road for over 15 years but really never got crazy with the handling part because I am not a serious full time racer. my real hobby is NHRA drag racing and we have a saying "if you can turn your front wheels...you are not going fast enough'!!
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Old 08-04-2015, 07:53 PM   #12
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Am digging up an old thread, but had a question with Kingpin Angle.... If you are running -2 degrees off negative camber and kingpin angle of hub is 1 degree is the kingpin angle then really 3 degrees versus a total of 2 degree if you had a 0 degree hub?

Thanks
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Old 08-04-2015, 09:29 PM   #13
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as i understand it yes
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Old 08-04-2015, 09:54 PM   #14
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as i understand it yes
Azeroth: Thanks, so do you then reduce amount of camber used so you wear tyre evenly and not cone it?
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Old 08-04-2015, 11:47 PM   #15
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The camber doesnt affect the kingping angle, its 2 separate adjustments.
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