UK Karting - Notice Board (4-Stroke Karting) : Re: Akerman

Notice Board (4-Stroke Karting)

Re: Akerman - question
Posted by 'itpro' on 16 May 2014 @ 16:03

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itproJoined: August 2001
Total Posts: 6
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If what you say is accurate then you have some of this backward!

Moving to outer holes on the pitman arm INCREASES the apparent Ackerman. Moving towards more 90 degrees at the drag line (mounting the track rod further out) would REMOVE (eliminate) the drag link-promoted Ackerman! Doing both at the same time will counteract themselves and you'll be back where you started (approximately).

However, if you mean by 'bounce' that the kart:-

* lifts the inside wheels in corner
* loses grip
* fall back down
* gains grip
* lifts the inside wheels
* loses grip........
* ad infinitum....

..... then that's what we always called 'hopping'... but the name doesn't matter.

The cause (in may opinion) is that your CofG is too high compared to the width of the kart. In my opinion, you need to lower the CofG (move the weights down, lower engine mount, lower your seat, rotate your seat backward, lower the stubs on the king-pins and lower the mounting of the axle bearing hangers....or widen the kart). The 'hopping (in my opinion) will disappear if you do this. Some drivers can alter how they sit in the seat and that can reduce the effect too, while still keeping maximum grip.

Ian

Message Thread:

Akerman by 'Bulldog1303' (12 May 2014 @ 20:55)

Re: Akerman by 'itpro' (13 May 2014 @ 2:17)

Re: Akerman by 'nitch' (13 May 2014 @ 10:35)

Re: Akerman by 'SimonS' (14 May 2014 @ 10:10)

Re: Akerman by 'd-i-y71' (14 May 2014 @ 12:55)

Re: Akerman by 'itpro' (14 May 2014 @ 15:41)

Re: Akerman by 'hetherip' (15 May 2014 @ 11:12)

Re: Akerman by 'itpro' (15 May 2014 @ 12:01)

Re: Akerman by 'lubo78' (15 May 2014 @ 13:47)

Re: Akerman by 'hetherip' (15 May 2014 @ 14:23)

Re: Akerman - question by 'Brakerider' (16 May 2014 @ 12:38)

Re: Akerman - question by 'itpro' << You are here!

Re: Akerman - question by 'd-i-y71' (17 May 2014 @ 10:01)

Re: Akerman - question by 'itpro' (17 May 2014 @ 17:58)

Re: Akerman - question by 'd-i-y71' (17 May 2014 @ 20:44)

Re: Akerman - question by 'itpro' (17 May 2014 @ 23:50)

Re: Akerman - question by 'essexelite' (17 May 2014 @ 22:44)

Re: Akerman - question by 'Brakerider' (27 May 2014 @ 13:06)

Re: Akerman - question by 'itpro' (27 May 2014 @ 16:58)

Re: Akerman by 'essexelite' (15 May 2014 @ 17:07)

Re: Akerman by 'Bulldog1303' (15 May 2014 @ 22:32)

Re: Akerman by 'essexelite' (21 May 2014 @ 22:03)

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