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Old 08-18-2009, 09:16 AM   #91
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Uhmmmmm.....Dave Johnson, is this the Dave that's friends with Legs? Keep us posted on your progress with the new ride, I know you'll be on rails with it...
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Old 08-18-2009, 09:22 AM   #92
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Here are some close ups of the car with electronics installed, and wheels:







This car definitely looks sex to say the least. Reminds me of a 10th scale version of an 8th scale on-road.

Very beautiful for an American designed, built, and manufactured car.

Who says the USA can't compete...

Now here is my question to the Tigermoth People:

How do you make Camber and Toe adjustments on this car? How about sway bars? Caster adjustments? Roll center adjustments?
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Old 08-18-2009, 10:02 AM   #93
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Dave Johnson, is this the Dave that's friends with Legs?
legs!!!
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Old 08-18-2009, 10:11 AM   #94
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This David Johnson?

http://www.wpxi.com/station/1900885/detail.html
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Old 08-18-2009, 10:11 AM   #95
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How do you make Camber and Toe adjustments on this car? How about sway bars? Caster adjustments? Roll center adjustments?
the kinematics are the same whether there's a ball or a hingepin as the pivot (since two ball joints create an axis of rotation), therefore:
camber - adjust the upper control arm length
toe - adjust the front or rear of the lower control arm (presumably via spacers)
caster - adjust the upper control arm spacing (front to rear) the way 12th scale cars are done, and with this car, there's also reactive castor.
roll centers - adjust the height of the lower pivot points
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Old 08-18-2009, 11:04 AM   #96
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the kinematics are the same whether there's a ball or a hingepin as the pivot (since two ball joints create an axis of rotation), therefore:
camber - adjust the upper control arm length
toe - adjust the front or rear of the lower control arm (presumably via spacers)
caster - adjust the upper control arm spacing (front to rear) the way 12th scale cars are done, and with this car, there's also reactive castor.
roll centers - adjust the height of the lower pivot points
Camber - It looks like you can only do so much before the joints cannot go out or screw in any further.

Toe - I am not seeing this. I might be blind, but can you draw circles around the CAD drawing on what you mean?

Caster - I am not seeing this either. It looks like spaces are very tight to even move anywhere.

Roll Center - The connections to the hubs look pretty stiff with very little to no adjustments, given the nearly solid construction. Do you mean adding spacers between the hub and the arm?
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Old 08-18-2009, 11:47 AM   #97
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I like how the ESC is protected from side impact.
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Old 08-18-2009, 11:59 AM   #98
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Camber - It looks like you can only do so much before the joints cannot go out or screw in any further.
how much camber do you plan to run? we can probably assume a +/-3* range minimum.

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Toe - I am not seeing this. I might be blind, but can you draw circles around the CAD drawing on what you mean?
how about arrows? it appears to me that the only way to adjust static rear toe is the make the rear lower control link longer than the front lower link. in oing this, i would disassemble it, put a spacer where the arrow indicates, and reassemble. that should alter the rear toe according to whatever the geometry would suggest. each mm is ~ 2* going by visual proportions.

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Caster - I am not seeing this either. It looks like spaces are very tight to even move anywhere.
i mispoke here. the castor looks fixed unless there is a way to slide either control arm fore/aft, or varous upper arms (with an offset built in).

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Roll Center - Do you mean adding spacers between the hub and the arm?
nope. the lower arm pivots have a much more drastic effect on r/c than does the camber link. in fact, if you choose to raise only one of the inboard lower pivots, the result will yield reactive toe (like the serpent nitro t/c of a few years ago had).

i am going strictly off of the same pictures you are. perhaps sweet david johnson will confirm some of this.
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Old 08-18-2009, 12:09 PM   #99
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Well to answer some ?'s seaball is right!
To adjust camber you use the top suspension link in or out range of motion is from 0 to 3 degrees, for rear toe you twist out the rear lower arm adjuster to the desired toe! For caster you adjust the front upper arm( the one toward the shock) outward! For roll center adjustment u add shims under all four arm links! For rear anti squat you adjust like you do front caster! Hope this helps!!!!

And that's this dave Johnson!!!!!! IMG_0257.JPG
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Old 08-18-2009, 12:15 PM   #100
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Well to answer some ?'s that's this dave Johnson!!!!!!
david!
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Old 08-18-2009, 12:22 PM   #101
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Quote:
Originally Posted by Dave Johnson View Post
Well to answer some ?'s seaball is right!
To adjust camber you use the top suspension link in or out range of motion is from 0 to 3 degrees, for rear toe you twist out the rear lower arm adjuster to the desired toe! For caster you adjust the front upper arm( the one toward the shock) outward! For roll center adjustment u add shims under all four arm links! For rear anti squat you adjust like you do front caster! Hope this helps!!!!

And that's this dave Johnson!!!!!! IMG_0257.JPG
Hey Dave, awesome clarification. Seaball also helped quite a bit with the picture. This car is looking pretty sweet right now. However, one last question I have is, if you add shims underneath all 4 arms for anti-squat and caster, how would this affect fitting with the top deck? I mean it looks like it would move the holes in our out some and may cause issues.

I am not trying to be a pain, but I have been known to try and be different at my track and fail miserably at it because I did not ask enough questions to the vender/driver. Also, do you have any pictures of your car?

I think the JPG you added in is broken. Try again?
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Old 08-18-2009, 12:23 PM   #102
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Lol ok David then!!!! Lol
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Old 08-18-2009, 12:25 PM   #103
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Lol ok David then!!!!
btw - welcome to the internet. was that a contractual obligation?
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Old 08-18-2009, 12:34 PM   #104
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Lol naw just easier from iPhone ( the best phone on the Market !!! Shameless ug) lol!!!! Hey shoot me a pm need to call ya
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Old 08-18-2009, 12:53 PM   #105
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Hey shoot me a pm need to call ya
oh, she said it's not yours.
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