Freestyle suspension issues

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CPGCharlie
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Freestyle suspension issues

Hi All,

for the second time, the bolts in the offside front Watt link into the rose joints have snapped, 

has anyone had the same issue? we tried bushing the entire system to stop play as no spacers were apparent when i took ownership of the car. This was meant to be temporary but have not come across a permanent solution to the paly across the freestyle setup.

any advice greatly appreciated 

also im looking at £80+VAT for labour... where does that sit on the scale? 

SM25T
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Where are you based ?

7 wonders of th...
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Are you meaning the rockers on the front as there's no watts linkage at this end of the car.

I'm freestyle to you need to ensure the shank goes all the way through the rocker, you need to get longer than required bolts and trim the threaded portion down to achive the correct shank to thread lengths.

BM if you need any help.

rgrigsby
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#1 I had a similar problem, as #3 has mentioned the original bolts supplied don't have a long enough shank. I've not had any problems since we replaced them with bolts with a longer shank, trimmed down to the right length.

CPGCharlie
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Armenia! but only for a few more days and will be moving back to the UK and in Aldermaston. 

Charlie Garland

Beagler
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Maybe an obvious question but are you using the the correct grade high tensile steel bolt.

2019 310S 1.6 Sigma

CPGCharlie
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we thought that was the issue but upgrade to the highest purchasable and still snapped -  after wrecking the bearings in the rose joints before anyone asks no I'm not aiming for potholes! 

Charlie Garland

Beagler
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You could try titanium bolts, Dear and shouldnt really need them if designed bolts are correct grade and torque.

2019 310S 1.6 Sigma

ECR
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I doubt that titanium is any better in shear than high tensile steel. It sure is lighter though

aerobod
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12.9 metric Allen bolts are about the highest strength readily available (or ASTM A574 grade if imperial). Normally won't cut easily without blunting a hacksaw blade, but cut-off wheels work well for trimming. Typically hex-headed bolts are not available in these grades, only at best metric 10.9 or imperial Grade 8.

James

Beagler
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copied this. The original designed bolts torqued correctly though should be ok.
 

Elongation at break is the measure of a test specimen’s initial length divided by its length right before fracturing in a tensile test, multiplied by 100 to give a percentage. A large elongation at break suggests the material “stretches” more; in other words, it is more prone to increased ductile behavior before fracturing. Titanium is such a material, where it stretches almost half its length before fracturing. This is yet another reason why titanium is so difficult to machine, as it pulls and deforms instead of chips off. Steel comes in many varieties but generally has a low elongation at break, making it harder and more prone to brittle fracture under tension.

2019 310S 1.6 Sigma