UK Karting - Notice Board (General Karting) : A little information on kingpins by Harry the cat.

Notice Board (General Karting)

A little information on kingpins by Harry the cat.
Posted by 'alanrr' on 08 May 2009 @ 22:30

| View Message Thread | Reply to this message |

alanrrJoined: August 2001
Total Posts: 491
[ View User Profile ]

There is a distinct difference between an Allen bolt and a kingpin.

A proper kingpin will have a machined shaft and will measure approx 7.96mm in diameter.

It will fit snugly in the 8mm bearing without any slack.

An Allen bolt will measure approx 7.82mm in diameter.

It will be a slack fit in the bearing and the shaft surface is rough but you may be sold these as they are available in the same length as the correct kingpin.

It is important to use the right item. Using Allen bolts will result in early failure of the bearings and you will not be able to get your tracking geometry correct and you have to tighten the bolt up to the Nth degree to get the slack to disappear.

An Allen bolt is much more likely to bend when hammering over kerbs.

When a pin bends it is usually bent at the bottom because the bending force comes from below, forcing the stub axle upwards.

Trying to hammer out the pin all the way from the bottm can be very difficult.

It is easier to drift it up enough to be able to hacksaw the head off and drift it downwards.

A 7.82mm Allen bolt with the head cut off and the end ground to a conical shape, can be used to hold and align the parts before inserting the kinkpin.

When checking tracking, slightly slacen the pin just enough to be able to turn it.

Rotate the pin while observing the laser beam to see if it varies the reading.

Meow.......

Message Thread:

A little information on kingpins by Harry the cat. by 'alanrr' << You are here!

Sorry about the typo's, cats can't spell. (nt) by 'alanrr' (09 May 2009 @ 10:04)

Re: Sorry about the typo's, cats can't spell. (nt) by 'John' (09 May 2009 @ 11:42)

Re: What, they haven't inveneted spellcheckers... by 'DanTheK1RaceGearMan' (09 May 2009 @ 20:34)

Or for pc's, what's 'inveneted'? (nt) by 'alanrr' (10 May 2009 @ 14:03)

Re: That's the Romanian splchecker in action! (nt) by 'DanTheK1RaceGearMan' (10 May 2009 @ 21:20)

Post a Reply:

You may post a direct reply to this message which will appear in this thread.
To post a new or unrelated message use This Form. Top of Page
Notice Board Index

[ UK Karting Main Index ]


News	Karts & Karting	Notice Board	Market Place	Companies Directory	Tracks Directory	Events Calendar	Race Results	Photo Gallery	Links