asl
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| posted on 28/6/08 at 05:41 PM |
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BEC steering stability
Hi all. I have an Indyblade and the front end is very twitchy at speeds over 60mph (When attempting to drive in a straight line) I find it fairly hard
to not get into a bit of a 'tank slapper' without backing off. Is this a traight of a bec due to the light front end which I simply need
to get used to (I've only driven it about 3 times) or is there something I should check/do?
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JUD
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| posted on 28/6/08 at 05:47 PM |
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I took a while to get used to driving mine. You need to relax and don't grip the wheel like a gorilla 
That said, you description sounds quite extreme - maybe you need to check the camber and toe-in. Can't remember the correct values - somebody
with a brain/memory will probably be along in a moment!!!
Martin
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MK Indy Blade
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mad-butcher
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| posted on 28/6/08 at 05:49 PM |
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sounds like it just needs setting up, mine gets abit tail happy when pushed to hard round corners, have a look at the videos on hellfires site that
should give you an idea of how well they generaly handle
tony
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David Jenkins
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| posted on 28/6/08 at 05:52 PM |
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I can think of 2 things to check:
1. Set the front up for 0 degrees toe-in, or maybe a touch inwards. Toe-out make for a twitchy car.
2. make sure that the rear ride height is higher than the front. having a high front is a well-known cause of excitement at speed! 
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locoR1
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| posted on 28/6/08 at 06:02 PM |
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After at Newark noticing the front top suspension arms fitted to the wrong sides on a certain members indy having heard him complaining for probably 2
years of the problem your describing I would check that first.
The offset of the top and bottom ball joints should be slopping to the rear of the car!
He now reports it to drive like a different car
You know who you are KEV !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 
Description
Check out my CB500T Cafe Racer build diary
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PAUL FISHER
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| posted on 28/6/08 at 06:48 PM |
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Yes I agree with locoR1 top wishbones on the wrong way round gives the feeling you discribe,so check that first,on a smooth road,you should be able
to take both hands off the wheel at 120mph they are that stable at speed.
[Edited on 19/05/04 by PAUL FISHER]
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Kev99
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| posted on 28/6/08 at 06:58 PM |
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I can guarantee that it drives like a totally different car know
I've also put 12mm spacers under the rack to lift it slightly that's helped to
[Edited on 28-6-08 by Kev99]
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mad-butcher
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| posted on 28/6/08 at 07:00 PM |
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wishbone orientation
 
Rescued attachment wishbone orientation.jpg
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roadrunner
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| posted on 28/6/08 at 07:24 PM |
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Mine was like that when it was first on the road, i found that the ride hieght was to high, the stroke on the damper would run out and that was with a
boat anchor fitted.
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asl
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| posted on 28/6/08 at 07:48 PM |
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Excellent, thanks for all the advice, will check it and let you know the outcome. Cheers
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ruskino80
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| posted on 29/6/08 at 09:30 AM |
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also what tyre pressures do you have?
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asl
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| posted on 29/6/08 at 02:59 PM |
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I'll double check the pressures. What should they be roughly. It came with (i think) fairly cheap tyres Toyo Proxes T1-S. 195/50R15 82V.
Thanks
[Edited on 29/6/08 by asl]
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Kev99
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| posted on 29/6/08 at 03:04 PM |
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tyre pressures mine are 17 all round
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asl
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| posted on 29/6/08 at 03:05 PM |
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Wow, that was quick. Thanks Kev!
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Kev99
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| posted on 29/6/08 at 03:09 PM |
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asl
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| posted on 29/6/08 at 05:37 PM |
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I've taken a picture of the right front. What do you guys think, right way round? To help orientate the front of the car is to the right as you
look at it. Thanks for your help
[Edited on 29/6/08 by asl]
 
Rescued attachment IMG_0737.JPG
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locoR1
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| posted on 29/6/08 at 05:42 PM |
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That looks right to me so much for that theory
Description
Check out my CB500T Cafe Racer build diary
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Kev99
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| posted on 29/6/08 at 05:42 PM |
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That looks right to me its how mine is now
[Edited on 29-6-08 by Kev99]
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locoR1
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| posted on 29/6/08 at 05:43 PM |
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Beat you
[Edited on 29/6/08 by locoR1]
Description
Check out my CB500T Cafe Racer build diary
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Kev99
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| posted on 29/6/08 at 05:46 PM |
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asl
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| posted on 29/6/08 at 06:46 PM |
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Thanks for the advice on the suspension. I've checked tyre pressures and they were fairly uneven so have changed them all to 17 as suggested by
ruskino and kev.
It is already much better but still a bit twitchy at the front end. It's ok when accelerating but the problem actually arisies when I lift off
the throttle at highish speed, it also gives a bit of a wobble when I dip the clutch when changing up.
It almost points towards when the weight transfers to the front at speed so may well be the ride heights I guess??
Thanks for all the advice guys!
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Hellfire
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| posted on 30/6/08 at 11:55 AM |
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Have you had the front wheels tracked properly?
Phil
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