Welcome, Guest. Please login or register.
September 21, 2020, 03:33:29 AM

help buggy does not drive right, wandering

This is a discussion for the topic help buggy does not drive right, wandering on the board Beach Buggy Rolling Chassis Help.

Author Topic: help buggy does not drive right, wandering  (Read 500 times)

this user is offline kirkyj

  • Beach Buggy
  • *
  • Posts: 127
  • essex
  • prowler
on: September 19, 2016, 09:40:15 PM
hi all, my buggy has king and link front which has just had new king & link pins by limebug, the rear is irs.

The buggy just dont drive right, feels a bit wandery, i am so desperate to get this fixed.

Here are the results of 4 wheel alignment, they did not change anything as they said it was pretty spot on.

left front  right front
-0.10          +0.20    camber
+4.09         +3.59    caster      (there are shims in)
+0.23         +0.23    toe

left rear  right rear
-1.18       -1.46      camber
-0.36       -0.32      toe

anyone got any ideas for the next step?


this user is offline Manxdavid

  • Forum Moderator
  • Buggy Queen
  • ******
  • Posts: 4690
  • Anglesey, North Wales.
  • Meyers Manx UK-00-002
Reply #1 on: September 19, 2016, 10:59:50 PM
I'm not too sure how to read those settings. Is the front end set to toe in or toe out? It needs to toe IN by 1 or 2mm. Tyre pressures too high? New kingpins too tight?
« Last Edit: September 20, 2016, 10:16:29 AM by Manxdavid »
Photos printed on genuine ILFORDŽ paper.

"Ah, Beach Buggies, sure, just a quick cheap way of getting a few more years out of a rusty Beetle. You can throw one together in a weekend." anon.


this user is offline Shaggy

  • MBC Moderator
  • Buggy Veteran
  • ******
  • Posts: 2476
  • midlands
  • Limited edition Californian
Reply #2 on: September 20, 2016, 08:48:23 AM
As said your tow in should be 1 as this helps your steering centralise and reduce wandering. Also check how much play you have in your steering box. The adjustment is on the top of the box (a locknut and a screw).
I'm in my buggy,
It's raining,
I really don't care.


this user is offline Manxdavid

  • Forum Moderator
  • Buggy Queen
  • ******
  • Posts: 4690
  • Anglesey, North Wales.
  • Meyers Manx UK-00-002
Reply #3 on: September 20, 2016, 10:15:36 AM
WHS^^^but don't go too tight, you need about an inch play at the steering wheel rim.
Photos printed on genuine ILFORDŽ paper.

"Ah, Beach Buggies, sure, just a quick cheap way of getting a few more years out of a rusty Beetle. You can throw one together in a weekend." anon.


this user is offline snoopy

  • MBC Moderator
  • Buggy Fanatic
  • ******
  • Posts: 8540
  • evesham. 07757010432
  • Kango ss/ Jas lwb
Reply #4 on: September 20, 2016, 04:21:14 PM
As said you need toe in not out and wider wheels will exagerate the problem.


this user is offline kirkyj

  • Beach Buggy
  • *
  • Posts: 127
  • essex
  • prowler
Reply #5 on: September 20, 2016, 05:02:22 PM
think it might have slightly to much toe in, i will double check.
i thought the camber on the front wheels might be an issue as the left is slightly negative and the right slightly positive but being king and link the shims dont seem to adjust this enough to change this.


this user is offline Hunter

  • SDBC Moderator
  • Buggy Meister
  • ******
  • Posts: 1581
  • Dorchester
  • CTR
Reply #6 on: September 20, 2016, 07:19:38 PM
What are the tyre sizes and pressures?

H
Started with a LWB mk1 RAT
Now running SWB CTR
(lwb Californian skooby powered in the wings)

Handle every stressful situation like a dog.
If you can't eat it or play with it, just pee on it and walk away.


this user is offline kirkyj

  • Beach Buggy
  • *
  • Posts: 127
  • essex
  • prowler
Reply #7 on: September 20, 2016, 08:57:45 PM
I am running 275. 55 r17 rears 20psi
195. 50 r15 fronts 15psi


this user is offline wadsy

  • Jr. Member
  • *
  • Posts: 37
  • Meyers Manx
Reply #8 on: September 20, 2016, 09:02:36 PM
Are you running caster shims behind the beam, I have a link pin front and irs on mine and it drives great. As said before are you sure the king pins aren't to tight as well.


this user is offline wadsy

  • Jr. Member
  • *
  • Posts: 37
  • Meyers Manx
Reply #9 on: September 20, 2016, 09:41:59 PM
Another thought on this, is the chassis a link pin chassis with irs conversion or an irs chassis with a link pin framehead fitted?  if its the latter and not fitted at the correct angle then this would cause handling issues as well.


this user is offline madmatt

  • Buggy Obsessed
  • ***
  • Posts: 318
  • bath/frome
  • sidewinder
Reply #10 on: September 21, 2016, 10:29:26 AM
I have that size front tyre,22 psi. At 15 my buggy follows the troffs in the road which feels like wondering. I generally check pressure before i go out cause they go flat easily with the low pressure.
The more you know,the more you know you don't know


this user is offline kirkyj

  • Beach Buggy
  • *
  • Posts: 127
  • essex
  • prowler
Reply #11 on: September 22, 2016, 09:08:40 PM
I do have caster shims behind the bottom of the frame head.
I will try running more pressure in the front tyres to see if that makes any difference, cheers.
I think it is a king and link chassis with irs added on, it's a pan man chassis so excellent work.

I miss my ballpoint front end mucheck more adjustable and never had this problem


this user is offline kirkyj

  • Beach Buggy
  • *
  • Posts: 127
  • essex
  • prowler
Reply #12 on: September 29, 2016, 06:23:23 PM
i have tried so far:
even out front cambers as much as i can shiming link pins
had steering box off and adjusted so it is not sticking at centre
tried running different tyre pressures
adjusted play in front wheel bearing

the next thing i was thinking is that maybe as the front end is lowered and lifts on throttle this is changing the toe? causing toe out. I am running standard shocks so there is alot of travel.
i will add more toe in to see if it makes much difference.

was thinking of maybe getting shortened shocks aswell?

the steering does not centre itself after cornering is this common on buggies?


this user is offline Dave DND

  • Global Moderator
  • Buggy Fanatic
  • ******
  • Posts: 9892
  • Paignton, Devon
  • Hustler GT
    • DND Services Ltd
Reply #13 on: September 29, 2016, 06:55:05 PM
the steering does not centre itself after cornering is this common on buggies?

That statement alone would tell me that your current geometry setup is wrong
01803-391680
dave@dndservices.co.uk



this user is offline snoopy

  • MBC Moderator
  • Buggy Fanatic
  • ******
  • Posts: 8540
  • evesham. 07757010432
  • Kango ss/ Jas lwb
Reply #14 on: September 29, 2016, 07:25:44 PM
It would appear you are suffering from lack of castor angle, that is what gives you self centering. If you are running low profile or 13/14 inch fronts just get a set of full height beetle wheels n tyres and try them on the front.  A high rear end will cause the problem.