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  #21  
Old 14-05-2008
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Would it be possible to mount the shocks on the front of the rear tower on an S2 to match the b4 geometry? Just an idea.

Well, if you don't run it, please do bring it with you still.

Chris
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  #22  
Old 14-05-2008
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Quote:
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Would it be possible to mount the shocks on the front of the rear tower on an S2 to match the b4 geometry?.
It already is!


BTW: Is Danny seducing me?
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  #23  
Old 14-05-2008
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He's a student, if he gets out of control just put him on a train - he'll be missing for days!
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  #24  
Old 14-05-2008
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  #25  
Old 14-05-2008
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Quote:
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He's a student, if he gets out of control just put him on a train - he'll be missing for days!
Ha bloody ha
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  #26  
Old 15-05-2008
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just read on another forum about this type of suspension being nothing new (Elvo never claimed to have invented this thing). But I was surprised to learn that it even allready had been used on a RC-car before.

The Losi Jrx2 (1988) (with thx to Asso-man)



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  #27  
Old 15-05-2008
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Quote:
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The Losi Jrx2 (1988)




The manual is on here somewhere..... under 'downloads' or 'reviews' IIRC.
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  #28  
Old 15-05-2008
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And the Tamiya Egress
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  #29  
Old 18-05-2008
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how does it stop the wheel base shortening as the wheel travels through the suspension arc? i thought that is why i though double wish bone are more commonly used in racing to stop this happening. I know multi link is used on most modern cars due to it compact construction layout and good handling properties.
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  #30  
Old 18-05-2008
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Quote:
Originally Posted by smokes View Post
how does it stop the wheel base shortening as the wheel travels through the suspension arc?.
You Don't.

If you take a look at the cars used on the Paris/Dakar rally you will see that the use a 5 link system too.

If you design the drag links so that they slope up towards the front of the car at static suspension height - It will lengthen the wheelbase and add stability when the car lands.

You can also use a 5 link setup to add toe-in under squat for more stability during accelleration.
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  #31  
Old 19-05-2008
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OOOO i want that jrx.

A
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  #32  
Old 19-05-2008
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not good for on road if the yaw rate exceeds 5 degs of more in a corner as this could make the loaded side wheelbase in a corner shorter than the unloaded side in a corner. That said pug use a trailing are setup that works really well on the old pugs.
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  #33  
Old 21-05-2008
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Quote:
Originally Posted by smokes View Post
not good for on road if the yaw rate exceeds 5 degs of more in a corner as this could make the loaded side wheelbase in a corner shorter than the unloaded side in a corner.
aaaaand... so what?

Besides, it depends on roll angle not yaw rate (which would be in deg/sec); and it also very much depends on the length of the arms and their angle at normal ride height.
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  #34  
Old 21-05-2008
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Who cares, on road sucks

Good job Elvo
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  #35  
Old 21-05-2008
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Quote:
Originally Posted by Jonny_H View Post
aaaaand... so what?

Besides, it depends on roll angle not yaw rate (which would be in deg/sec); and it also very much depends on the length of the arms and their angle at normal ride height.
And their angle at normal ride height is ... up towards the front of the car. So loaded side wheelbase would be longer, not shorter.


http://www.rc-offroad.be/pictures/20...actise_032.htm


(And yes, on-road is for wimps)
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  #36  
Old 21-05-2008
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Looks very good Elvo! Props!

How's the wear/slop coming? Is there much? I would think finding some nice heim-type joints would help.

You know, an X - 6 isn't much wider than a B4...
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  #37  
Old 21-05-2008
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Quote:
Originally Posted by Paul_Sinclair View Post

How's the wear/slop coming? Is there much? I would think finding some nice heim-type joints would help.

You know, an X - 6 isn't much wider than a B4...

Slop is ... ... not too bad. There is some; slightly more than on a freshly built B4 suspension. But it feels as if it's spread out over 3 dimensions, rather than being mainly in the dimension where it affects camber but not toe-in. But then again, I didn't use new ball studs in 2 places. It's still fine after a few rough test sessions, which I think is also due to the fact that the forces are more evenly spread over all the different links.

Yeah, only 2/10 are heim-type joints. More would be better.

Chassis width is no problem, but having the shocks behind the axles is.... ... a bit.
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  #38  
Old 22-05-2008
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Elvo,

What rear hubs are you using? Any chance we can see some detailed up close pics?
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  #39  
Old 23-05-2008
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Quote:
Originally Posted by CCristo View Post
Elvo,

What rear hubs are you using? Any chance we can see some detailed up close pics?

Custom made ones. They took many evenings/nights to design, and 2 days to machine.
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  #40  
Old 23-05-2008
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I love it!

That is ace
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