x link and flex arm??
Posted: Sun Nov 14, 2010 5:38 pm
can you do both i cant find anything on here that tells ya
If you have a shit load of room left under the gaurds you need bigger tyreswade.s wrote:ive got the flex arm in atm with hd 5in coils and have a shit load of room left under the gaurd but to tell you the truth i dont no if its the shocks or the springs or wat that is stoping it from flexing does anyone no how big of shocks you can fit without bottoming out on my set up ?
Have a close look at how your front suspension works. The superior flex arm is an attempt to overcome the binding effect of the radius arm geometry. Basically the front axle housing becomes one giant sway bar and the only articulation you can get is how much crush the radius arm bushes can sustain. The Superior super flex arm just has the bushes closer together effectively allowing increased leverage on them and subsequently crushing them more and allowing more "flex". The downside to this is the unbalanced braking effect the radius arms transmit through to the chassis. It is not equal and therefore the original arm transmits most of the force effectively lifting the chassis on that side. The X- link on the other hand removes the binding effect of the fixed radius arms totally. The front eyes of the arms are attached to the linkage and can rock through a single pivot point on the front of the diff housing. If you want to see how much flex you have really got, pull out the bottom bolt of the SF arm and then flex it up, then you will understand.wade.s wrote:ive got the flex arm in atm with hd 5in coils and have a shit load of room left under the gaurd but to tell you the truth i dont no if its the shocks or the springs or wat that is stoping it from flexing does anyone no how big of shocks you can fit without bottoming out on my set up ?
I have never noticed this when braking.BadMav wrote: The downside to this is the unbalanced braking effect the radius arms transmit through to the chassis. It is not equal and therefore the original arm transmits most of the force effectively lifting the chassis on that side.
that explains a lot!BadMav wrote:suspension stuff
1MadEngineer wrote:that explains a lot!BadMav wrote:suspension stuff
What setup do you run in the back of the truck?wade.s wrote:have toughdog shocks man ,i got the set up straight from your shed but your right the set up is really good for high speed stuff i dont no if this is any good but i can go 60 through the flat windy bush tracks and feel safe as no huge body roll and with the handleing and on road it handles like standard with stuff all pull when braking im just winging about getting abit more flex out the front
I do it, not all the time and only when driving slow through some real rough stuff, same with another mate in his GQ swb and my brother in law in his 100 series. Never had any issues doing it, though I would never drive fast with it out. It flexes better than my mates (previously mentioned) super flex armed GQ and handles heaps better on road (with the bolt back in of course).wade.s wrote:hey thanks heaps for the info fellas i will do the testing of my shocks ,hey do any of use go 4wdin with that bolt out i cant see it being any weaker as the driver side only has the 2 in ?
Michael, I realise that Superior will have done alot of research and had some trial & error in developing these arms but IMO the anti-rotational force (during braking) that the radius arms provide should be equal across the chassis which would therefore require two superflex arms. Now this I would be interested to see work. Have you tried this?SuperiorEngineering wrote:The kits that we sell complete do not have this braking problem but we have done a lot of trial and error with different brand coils and shock combinations.
Depending on what coils you are using you may be able to go slighlty lighter on the front, usually we supply heavy coils as their is nothing worse than warranty problems as most coil manufacturers do not want to honour claims so it is sometimes easier to go a bit on the heavier side to save aggrevation to the customer.wade.s wrote:have toughdog shocks man ,i got the set up straight from your shed but your right the set up is really good for high speed stuff i dont no if this is any good but i can go 60 through the flat windy bush tracks and feel safe as no huge body roll and with the handleing and on road it handles like standard with stuff all pull when braking im just winging about getting abit more flex out the front
We have supplied the short arms on both sides of a comp truck but i honestly do not beleive you need that, you will suffer from axle wrap under heavy braking on a full size GQ/GU and their is a chance of more damage and premature wear to the unis if you are having axcessive axle wrap, not to mention the coils , shock bushes and shock case.BadMav wrote:I do it, not all the time and only when driving slow through some real rough stuff, same with another mate in his GQ swb and my brother in law in his 100 series. Never had any issues doing it, though I would never drive fast with it out. It flexes better than my mates (previously mentioned) super flex armed GQ and handles heaps better on road (with the bolt back in of course).wade.s wrote:hey thanks heaps for the info fellas i will do the testing of my shocks ,hey do any of use go 4wdin with that bolt out i cant see it being any weaker as the driver side only has the 2 in ?
Michael, I realise that Superior will have done alot of research and had some trial & error in developing these arms but IMO the anti-rotational force (during braking) that the radius arms provide should be equal across the chassis which would therefore require two superflex arms. Now this I would be interested to see work. Have you tried this?SuperiorEngineering wrote:The kits that we sell complete do not have this braking problem but we have done a lot of trial and error with different brand coils and shock combinations.
Rowen
It was this that I was unimpressed about as my mates truck, of which the whole kit was installed by Suspension Stuff, braked unevenly when pushed hard, handled like a bag of. on the road and was outflexed by my shitta with a radius arm bolt out. He was rather disappointed. At the end of the day one radius arm applies more anti-rotational force on the axle because it has better leverage on it, this is why this one picks up the drivers side more than the left. Similar situation but alot worse would be if I left the front radius arm bolt out in one of mine and jumped on the picks at 60. Scary.SuperiorEngineering wrote:it must be remembered that the axle is a solid beam in the front although you are connecting with different size plates but if the coils and shocks do their job it will hold the truck stable under braking
And after some thought, I totally agree. In this case, why not increase the centre to centre distance between the bushes? This IMO would increase stability under braking (as both arms are taking the braking force evenly) yet allow the increased flex as the combined crush of the 2 arms (with bush centres further apart) would equal the one standard/one short arm system.SuperiorEngineering wrote:We have supplied the short arms on both sides of a comp truck but i honestly do not beleive you need that, you will suffer from axle wrap under heavy braking on a full size GQ/GU
sorry, not bagging them in particular, shane trys better than anyone to sort this stuff out. Its more an ever increasing dislike of springs made by australian manufacturers (eg dobinsons) that charge top dollar, yet have very poor material and process selection based upon vehicle requirements. The 'experts' continually supply springs based upon spring rate and lift requirements, but overlook the real working parameters of these springs. The scragging and quality control is average at best. Yeah i know, 90+% will by cheap shit springs cus they are $2 cheaper than another company, and then whinge when they sag. But if people are willing to spend a few extra $ then top quality 'cold wound' springs which are far superior then the others might actually improve. Just read the warranty and process info from say EIBACH, their springs are tested to bind and still have a lifetime warranty, yet they are <~20% dearer than most other manufacturers.love ke70 wrote:1MadEngineer wrote:that explains a lot!BadMav wrote:suspension stuff
why?
I don't go by what Dobinsons have in a catalogue, the flexy coils that others get from Dobinsons are too soft but we stopped using these a couple of years ago. I am nearly 100% certain that this guy would have the correct coils, it would the the shocks at fault.1MadEngineer wrote:sorry, not bagging them in particular, shane trys better than anyone to sort this stuff out. Its more an ever increasing dislike of springs made by australian manufacturers (eg dobinsons) that charge top dollar, yet have very poor material and process selection based upon vehicle requirements. The 'experts' continually supply springs based upon spring rate and lift requirements, but overlook the real working parameters of these springs. The scragging and quality control is average at best. Yeah i know, 90+% will by cheap shit springs cus they are $2 cheaper than another company, and then whinge when they sag. But if people are willing to spend a few extra $ then top quality 'cold wound' springs which are far superior then the others might actually improve. Just read the warranty and process info from say EIBACH, their springs are tested to bind and still have a lifetime warranty, yet they are <~20% dearer than most other manufacturers.love ke70 wrote:1MadEngineer wrote:that explains a lot!BadMav wrote:suspension stuff
why?
Also most manufacturers in aus won't use any high end materials (eg inconel...), mainly due to them only having steel accounts with one steel, and they literally 'get what they are given'.
I don't know what gear your mate has but this my set up that works fine onroad and offroad, HD rear flexy coils, MD front flexy coils, rear sway bar with boss shocks. Spring rates are very important so get the superflex arms to work to their full potential.BadMav wrote: It was this that I was unimpressed about as my mates truck, of which the whole kit was installed by Suspension Stuff, braked unevenly when pushed hard, handled like a bag of. on the road and was outflexed by my shitta with a radius arm bolt out. He was rather disappointed. At the end of the day one radius arm applies more anti-rotational force on the axle because it has better leverage on it, this is why this one picks up the drivers side more than the left.
To me it just seems like a huge expense and alot of time, trial and error to get it right. When I pull a radius arm bolt mine will outperform it off road and slip the bolt back in on road for far superior handling. Takes a minute to do and is a whole lot cheaper.SIM79 wrote:I don't know what gear your mate has but this my set up that works fine onroad and offroad, HD rear flexy coils, MD front flexy coils, rear sway bar with boss shocks. Spring rates are very important so get the superflex arms to work to their full potential.BadMav wrote: It was this that I was unimpressed about as my mates truck, of which the whole kit was installed by Suspension Stuff, braked unevenly when pushed hard, handled like a bag of. on the road and was outflexed by my shitta with a radius arm bolt out. He was rather disappointed. At the end of the day one radius arm applies more anti-rotational force on the axle because it has better leverage on it, this is why this one picks up the drivers side more than the left.
$1300 for a pair of 5 inch arms is expensive enough but add $490 each for the SRC shocks just to get it to work better looks awfully expensive to me.SuperiorEngineering wrote:Huge expense no, trial and error no.
For all we know this suspension eg shocks ect is what the customer insisted on.?
I see your point, but these arms are not legal to be fitted on a registered car in QLD. Neither are my now 3 inch coils and 32s. At least the dodgy cast arms I have are technically legal. Don't confuse me saying legal with stronger, the superior arms are obviously much stronger and much better designed. You would have to agree however, with the crackdown on modded 4wds in QLD, alot of people won't use them. Same goes for the fitment of X-links.SuperiorEngineering wrote: There are a massive amount of these arms sold that are used in the racing scene as well as recreation and for these guys it would never work for them to use standard arms and remove the bolt,( firstly time and piss weak standard cast arm that break, and just plain effort ) who really want's to undo bolts when you should be 4wding with your mates. Not many guys.
I haven't spoken to him for a while now (conflicting shifts etc) and as far as I know it's off the road anyway as the DOT were on the prowl for it. I don't know if he contacted Shane, I'm just giving my opinion as well as his thoughts at the time we went wheeling.SuperiorEngineering wrote: ... it is just unfortunate your friend is not happy with his setup but he should be approaching shane with his concerns if it truly does worry him( neither shane or myself have been approached from him as yet, i know because shane and i discussed this today on the phone !! ) and i know shane will help him out until he is happy.
Winging on a forum will not fix the problem , only a phone call will, Approx 30 cents
Michael
I'm pretty sure last time I checked removing vital bolts from the suspension of your vehicle isn't roadworthy either....BadMav wrote:I see your point, but these arms are not legal to be fitted on a registered car in QLD. Neither are my now 3 inch coils and 32s. At least the dodgy cast arms I have are technically legal. Don't confuse me saying legal with stronger, the superior arms are obviously much stronger and much better designed. You would have to agree however, with the crackdown on modded 4wds in QLD, alot of people won't use them. Same goes for the fitment of X-links.
That's right. Never drive on the road with it out.chunks wrote:I'm pretty sure last time I checked removing vital bolts from the suspension of your vehicle isn't roadworthy either....BadMav wrote:I see your point, but these arms are not legal to be fitted on a registered car in QLD. Neither are my now 3 inch coils and 32s. At least the dodgy cast arms I have are technically legal. Don't confuse me saying legal with stronger, the superior arms are obviously much stronger and much better designed. You would have to agree however, with the crackdown on modded 4wds in QLD, alot of people won't use them. Same goes for the fitment of X-links.
BadMav wrote:
I see your point, but these arms are not legal to be fitted on a registered car in QLD. Neither are my now 3 inch coils and 32s. At least the dodgy cast arms I have are technically legal. Don't confuse me saying legal with stronger, the superior arms are obviously much stronger and much better designed. You would have to agree however, with the crackdown on modded 4wds in QLD, alot of people won't use them. Same goes for the fitment of X-links.