BMR Watts Link - Teaser

[Boaisy]

Hope to be able to share the other pics soon. Trying to be careful on what I share at this time....for a few reasons.

*cough* UPR *cough*

 

[Wes06]

saw thread update with nothing but morningstar post, GRRRR

come back in to see BMR update, WOOO

 

[ModdedMach]

UGH I want.

next month- yes.

 

[2013DIBGT]

This piece no doubt looks very stout and could probably survive an IED strike but I suspect that there is a very fine line between a finished product that is both "strong enough" and light compared to one that ends up being overweight/overkill if some restraint is not used during the design and build phase.

Is the BMR crew shooting for this unit to weigh less then the popular Fays2 unit on the market which some may argue as being on the heavier side of the Watts Link offerings?

Thanks

 

[Whiskey11]

This piece no doubt looks very stout and could probably survive an IED strike but I suspect that there is a very fine line between a finished product that is both "strong enough" and light compared to one that ends up being overweight/overkill if some restraint is not used during the design and build phase.

Is the BMR crew shooting for this unit to weigh less then the popular Fays2 unit on the market which some may argue as being on the heavier side of the Watts Link offerings?

Thanks

The Fays2 is about the same weight as the Whiteline unit but it is less unsprung weight. IIRC it is about 28lbs but my memory could be off.

 

[2013DIBGT]

Sounds about right. I saw a pic of the Fays2 on a scale along with a track pack diff cover and it weighed 32.8 lbs but I'm not sure how much of that weight was added by the diff cover itself but 28lbs for Fays2 alone seems accurate.

 

[BMR Tech]

This piece no doubt looks very stout and could probably survive an IED strike but I suspect that there is a very fine line between a finished product that is both "strong enough" and light compared to one that ends up being overweight/overkill if some restraint is not used during the design and build phase.

Is the BMR crew shooting for this unit to weigh less then the popular Fays2 unit on the market which some may argue as being on the heavier side of the Watts Link offerings?

Thanks

To be 100% honest, I never had any clue of what a Fays 2 unit weighs.

Never even thought about that, until you mentioned it.

 

[ModdedMach]

The Fays2 is about the same weight as the Whiteline unit but it is less unsprung weight. IIRC it is about 28lbs but my memory could be off.

+1 a little weigh outback in these cars isn't bad IMO- as long as it's unsprung.

To be 100% honest, I never had any clue of what a Fays 2 unit weighs.

Never even thought about that, until you mentioned it.

Just judging by the few pics I've seen, I think your unit will be similar or slightly less weight wise. I like that most of it will be unsprung weight.

 

[popeye]

To be 100% honest, I never had any clue of what a Fays 2 unit weighs.

Never even thought about that, until you mentioned it.

Will the chassis mounted setup have longer arms than the Fays unit,,,, I hope?

 

[GoneFord]

I need this!!!

 

[Whiskey11]

Will the chassis mounted setup have longer arms than the Fays unit,,,, I hope?

I'm not sure what is to be gained by going to longer arms. I'm pretty sure the Fays2 unit will stay vertical in travel until the rear shocks either get damaged from extension or damaged from compression/axle hitting frame. The tall football on the Fays2 unit really does a good job of keeping the rear axle in the straight portion of the watts link "curve".

 

[popeye]

I'm not sure what is to be gained by going to longer arms. I'm pretty sure the Fays2 unit will stay vertical in travel until the rear shocks either get damaged from extension or damaged from compression/axle hitting frame. The tall football on the Fays2 unit really does a good job of keeping the rear axle in the straight portion of the watts link "curve".

I have run the Saleen unit with the much longer arms though it was diff mounted. I also ran the Fays and just found the handling to be a bit twitchy. I really preferred how the Saleen unit worked. A lot! I attributed the difference to the arm length.

 

[Whiskey11]

I have run the Saleen unit with the much longer arms though it was diff mounted. I also ran the Fays and just found the handling to be a bit twitchy. I really preferred how the Saleen unit worked. A lot! I attributed the difference to the arm length.

Probably has more to do with how the roll center is controlled and less to do with the arm length. Diff mounted units will have a lot more progressive loading than the chassis mounted unit because the arm length will change on acceleration or braking and as the chassis rolls.

 

[ModdedMach]

whiskey, i need your vast knowledge of watts link loading and such.

I, myself, will probably be going chassis mounted, either BMR or Fays2.

 

[Norm Peterson]

I have run the Saleen unit with the much longer arms though it was diff mounted. I also ran the Fays and just found the handling to be a bit twitchy. I really preferred how the Saleen unit worked. A lot! I attributed the difference to the arm length.

A diff-mounted Watts link forces all of the change in rear LLT to occur through the springs/shocks/bar, which will take a little more time to happen than going directly through the primary means of lateral axle location without any suspension movement being required. Also, the diff-mounted Watts link appears to have a fractionally slower rate of change in roll steer (change in % vs change in ride height). Probably subliminal stuff as far as identifying what's happening, but that doesn't mean you might not feel differences in what's going on.


Norm

 

[Pentalab]

I'm not sure what is to be gained by going to longer arms. I'm pretty sure the Fays2 unit will stay vertical in travel until the rear shocks either get damaged from extension or damaged from compression/axle hitting frame. The tall football on the Fays2 unit really does a good job of keeping the rear axle in the straight portion of the watts link "curve".

Between sitting on the ground...vs being on a 2 post lift...with rear axle dangling down to its lowest point, I see no difference in lateral movement of the rear axle on my WL watts link.

With the previous BMR adjustable PHB, there was a huge difference in lateral movement of the rear axle, when up on a 2 post lift.

In both cases of course, the suspension going from idle state..to fully unloaded. I doubt you will ever see a fully unloaded state.... but this was just an observation.

 

[BMR Tech]

The "amount" of lateral movement, IMO, is not much with a panhard bar on these cars.

On a car with heavy rates....you may not even get 1/8" of lateral movement - assuming we don't get into bushing deflection, etc.

 

[BMR Tech]

Made some changes to that passenger side mount, in an effort to reduce weight and cost.

Of course, it will not be as strong as the above pics, but it should be more than capable.

Also, we re-designed the axle mounts today. If we can keep the costs down, we will be offering them with multiple height adjustments - to somewhat match the RC adjustments on the chassis brace above.

I am confident this will be the best Chassis Mount Watts for the money.

 

[claudermilk]

Anticipa-a-a-a-a-tion.....

 

[BMR Tech]

The BAB was replaced with this, on the passenger side:



The axle mounts....zOMG: