Why asymetric steering bellcranks?

[Lonestar]

Howdy yall

I've had this one on top of my head a few times but never got to ask... but as I'm working on getting the LXT ready for action in May, it comes back to the surface again:

why the steering bellcrank asymetry on the first-gen losi steering bellcrank design? What is the obvious bit I'm missing here? Why the off-center hole and the longer left bellcrank?

(pic courtesy of ebay )



Thanks

Paul

[jwscab]

that's always bugged me. the only thing that comes to mind is it's for ackermann geometry.

[Lonestar]

mmh... that certainly influences ackermann angles, but in an asymetric way...

[GoMachV]

Common core math

[threesheds]

Anything to do with asymetry of servo?

[badnat]

Ok i thought it was quite obvious for everyone here fellowers ... and that i was dumb so i never asked
Happy to see your confession on that subject’... i feel better now (big breath)

Btw if anyone can help, i would really appreciate ...

++
Nat

[RC10th]

Possibly for roundy round racing ? Or someone made a mistake and set the machine up wrong ?

[GoMachV]

My thoughts were that they optimized it for a centered servo, which moved the crank over a bit, and putting the cranks too close would not be optimum. By offsetting both the sweep is somehow corrected with the geometry of the longer input side. I have NO idea if this is why, not any proof, but it was always my feeling

[TRX-1-3]

My RIGHT bellcrank is longer. ha ha

When I got my JRX2 I also noticed this. I looked around at aftermarket / period "hop up" steering kits and they did not seem to be asymmetrical, further intriguing me. Maybe it's one of those Losi "one eye covered" inside jokes?

[Lonestar]

So no-one knows for sure... I love it I like Jeff's tentative explanation tho

@mytimac can you please ask Gil next time you see him?

[mytimac]

Yeah, let me get the plane and ask him.

[ThunderDan]

I think it was because of the original servo saver bendy arm setup. It may have been a work around to extend the the bendy arm and move the hole forward in the rack as they may have found the equal length drag link / driven bendy link resulted in too easily broken bendy links. Butt I’m only spitballing here. I think this flawed design results in the car having a tighter left turning radius. Goofy as hell.

[RCveteran]

I think Gil was drunk when he sketched it out and no one noticed. Good a theory as any.

[ChisaiKuso]

Thank you for asking the question, Lonestar. I have always wondered this myself.

[mytimac]

From the man himself.

"The JRX2 originally only had a flexible steering arm as a servo saver (not such a great idea). I wanted it to be as long as possible to reduce the strain (more travel) when hit. Since the arms were offset only one could be that long. I would do many things differently in retrospect! I was at the beginning of my learning curve at that time."