[Rustyray13]

Ive been searching around for a decent priced set of dropped radius arms to suit a 3-4 in lift as my front springs are bent even with front castor bushes fitted so my question is is there any local shops making them other than snake racing i can see ora ones in uk does anyone know how much to get them here do they work out more than snake in the end cheers

[Jezza86]

jimny bits ones work well, Shep has the ora things, but i dont think he was happy with the finish. they may have fixed that now

jb ones 433.92 to australis w/o bushes

[Jim_Aus]

i got a quate for some from Thailand

JIMNY
Trailing Arms 1set
(4pcs) AU$799
Shipping Cost : AU$ 206 By EMS
Total : AU$ 1005
※ Shipping cost is included.
※ Validity: 2014.4.30
the fronts are a two piece arm though..... they look arlight

[jimny_timmy]

Got a link to these?^^^^


Sent from my iPhone using Tapatalk

[shep]

The ORA ones I have at the moment are pure shit. Crap welding, shit finish and the rears are too short. I have been winging
To ORA about them and they are sending me another set of their new design arms. Hopefully I will have them fitted in the next couple of weeks.

[Jim_Aus]

I saw that on the Big jimny forum.... No good. I'll post the company tomorrow

[zukenutter]

Those new ORA arms look pretty good. I have ORA arms at the front and have been happy with them except for their poor ground clearance.

Timmy, these may be the ones Jim_Aus was quoted.
http://www.giz.com.tw/english/product_detail.php?pid=1&ppid=1&Id=16

[Jim_Aus]

Yup that's the ones... Look alright to me. Still gotta get bushes for them.. Bit of a pain

[greenzook89]

Call me paranoid but I dont like the idea of a two piece arm... but it would be cool if the small link was threaded to adjust castor.

[jimny_timmy]

I'd imagine 2 piece arms might be good off-road... That much play on road couldn't be a good thing?

[zukenutter]

Their two piece arm is for the rear. The front is one piece.

[Jim_Aus]

yea thats what i was thinking....... im saving for a set now though.... (long process on my wages hahahahaha)

[BertZook]

wondering how much gain in flex those arms would give

[Jezza86]

BertZook wrote:

wondering how much gain in flex those arms would give

probably enough to reduce the rear roll stiffness to a point that you'd put the stock arms in

[zukenutter]

They'd only help until the shocks ran out of travel. I think the main advantage would be the reduction of strain on the bushes

[31zook]

Is it a bolt and spacer in the rear arms? Or bushes? Would be interesting to see In person...

[BertZook]

zukenutter wrote:

They'd only help until the shocks ran out of travel. I think the main advantage would be the reduction of strain on the bushes

longer shocks then

I picture then as keeping the axle at the same parallel to the car while traveling up and down, so no roll or twist.

apart from keeping the coils and the shocks straight, donna what would be the main benefit form them, more travel or flex, what else?

only get to find those product photos, can't find any of the arms in action

[dougies_tx5turbo]

well ive got a pair of these with my suspension kit waiting to be put in. i just need to get them sprayed black.
there was another similar thread to this a year or so ago with alot more information and some similar front arms.

[shep]

They don't look very strong, I reckon where the bend is will fail reasonably easy.

[31zook]

They look strong enough. I just wonder how well the would control axle tramp. Considering slightly worn bushes would make it click/hit on the lower arm...

[pezz]

Rubicon express use this design on long arms for thr front of tj and xj jeeps, seams to work in that application, not the best option, but for a bolt in long arm with the packaging issues the jeeps have in the front they get the job done

[Gwagensteve]

zukenutter wrote:

They'd only help until the shocks ran out of travel. I think the main advantage would be the reduction of strain on the bushes

I'm not being a hater - please don't take offence ZN, but this isn't really correct. Roll stiffness is a completely different issue to outright wheel travel.

Here's an example - I see you unhook your front sway bar when off road. With the sway bar attached, I'm sure you have exactly the same amount of [img]vertical[/img]wheel travel as with it disconnected, but the car feels and flexes completely differently with the bar on and off - that's because the roll stiffness is affected by the sway bar, even though nothing else is.

Fitting those two piece rear radius arms would, as far as I can tell, significantly reduce the rear roll stiffness. I don't really know enough about jimny suspension behaviour to comment as to whether that's positive or not* (see below), but I can assure you they would have a noticeable effect on the cars handling, regardless of the shock travel.

*(This is just my opinion) My guess is that there's nothing wrong with the roll stiffness of the rear of a Jimny and you wouldn't want to lower it. They seem to have no problem flexing as far as any shocks that can be made to fit can allow. However, there must have been some point to designing these rear arms, and it might have to do with urethane bushes. Running urethane not only increases roll stiffness (to the point it can start to hurt travel, but it also looks to heavily load up the inadequate axle brackets. Fitting these arms with urethane bushes might/should/could reduce bushing bind and help the brackets live when using urethane bushes. Personally, I don't understand the use of urethane bushes in a radius arm suspension, but there you go. It wouldn't be the first time a product didn't make sense.

[31zook]

Jimnys standard rear roll stiffness is fairly good in my books. Doesn't unload, doesn't try to walk under itself on a hill, and I have never seen a jimny that does.

With that said, if you could incrementally lower it and see where if feels best but it would suprise me if its much lower then where it is now.

If people want wheel travel from their Jimnys they need to work on the front.

[Gwagensteve]

^ Much truth here.

It's always easier to make the back end work than the front, but the most gains are always had when the front end works hard. We rarely reverse up obstacles, and backing up obstacles to make it look like the front suspension can flex is strictly for patrol owners.....
Oh scrap that, that doesn't seem to work either



Check the hektik front flex!

[Rustyray13]

Well cheers for the info guys aus jim thanks for your efforts on pricing fom thailand. they look ok anyone successfully passed an engineers cert with that type. has anyone got pics of old ora frony arms and their updated style and rough prices to aus cheers.

[Rustyray13]

Oh sorry to jezza86 just saw your.post there of jb ones ill
check those out cheers

[zukenutter]

Gwagensteve wrote:

zukenutter wrote:

They'd only help until the shocks ran out of travel. I think the main advantage would be the reduction of strain on the bushes

I'm not being a hater - please don't take offence ZN, but this isn't really correct. Roll stiffness is a completely different issue to outright wheel travel.

Here's an example - I see you unhook your front sway bar when off road. With the sway bar attached, I'm sure you have exactly the same amount of [img]vertical[/img]wheel travel as with it disconnected, but the car feels and flexes completely differently with the bar on and off - that's because the roll stiffness is affected by the sway bar, even though nothing else is.

Fitting those two piece rear radius arms would, as far as I can tell, significantly reduce the rear roll stiffness. I don't really know enough about jimny suspension behaviour to comment as to whether that's positive or not* (see below), but I can assure you they would have a noticeable effect on the cars handling, regardless of the shock travel.

*(This is just my opinion) My guess is that there's nothing wrong with the roll stiffness of the rear of a Jimny and you wouldn't want to lower it. They seem to have no problem flexing as far as any shocks that can be made to fit can allow. However, there must have been some point to designing these rear arms, and it might have to do with urethane bushes. Running urethane not only increases roll stiffness (to the point it can start to hurt travel, but it also looks to heavily load up the inadequate axle brackets. Fitting these arms with urethane bushes might/should/could reduce bushing bind and help the brackets live when using urethane bushes. Personally, I don't understand the use of urethane bushes in a radius arm suspension, but there you go. It wouldn't be the first time a product didn't make sense.

No offence taken Steve, and I agree. I was actually meaning that the Jimny rear already works, stiffness is not an issue in the rear at all. I've actually been considering a rear sway bar due to my long hauls and towing duties (keep in mind my Jimny sees multiple dd duties). The only limit to travel is bump stops and shock extension and compression lengths.

31zook wrote:

Jimnys standard rear roll stiffness is fairly good in my books. Doesn't unload, doesn't try to walk under itself on a hill, and I have never seen a jimny that does.

With that said, if you could incrementally lower it and see where if feels best but it would suprise me if its much lower then where it is now.

If people want wheel travel from their Jimnys they need to work on the front.

Agree with all of this

[Jezza86]

zukenutter wrote:

I've actually been considering a rear sway bar due to my long hauls and towing duties (keep in mind my Jimny sees multiple dd duties). The only limit to travel is bump stops and shock extension and compression lengths.

this is what i was contemplating here viewtopic.php?f=37&t=45261&p=808109&hilit=+roll#p808109
i figgured the risk was going 3 wheeler style round corners the way a evo will on a track, however being rear wheel drive thats less likely, but also not ideal.

[Gwagensteve]

Mike57 and I were going over this at the Club's tech day yesterday.

I think there is some merit in increasing roll stiffness in the rear of a Jimny, especially when the car is heavily loaded. I think Mike's car is typical of many Jimnies equipped for camping and runs at GVM (or over) pretty much all the time. In this case, I think that the rear bushing stiffness is inadequate for a car right on or over GVM, and that's where the looseness and sway is coming from. Swapping to stiffer bushes isn't a good option as it leads to bracket failure, and increasing shock and spring rates is a poor solution as the rear shocks and springs are inboard too far - in order to arrest sway the ride on vertical travel (i.e corrugations) will become excessively harsh.

Most other 4WD's run a rear sway bar, It might well be the answer for the Jimny.

Steve.

[zukenutter]

Yes to all of that