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Serpent Project 4-X

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R/C Tech Forums Thread Wiki: Serpent Project 4-X
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Introduction
This is a wiki page for the new and very interesting concept 4-X from Serpent. This is wiki is meant to develop and grow as more is understood about the car.

Serpent's Product Page - http://www.serpent.com/product/400030
The 4-X Development Story - Here

Manual - Here

Spring Chart
SOFTEST
  • 401705 Spring white C4.4 4X (2)
  • 401706 Spring yellow C4.9 4X (2)
  • 401707 Spring orange C5.5 4X (2) = kit
  • 401708 Spring red C6.3 4X (2)
  • 401709 Spring pink C6.9 4X (2)
  • 401710 Spring blue C7.6 4X (2)
  • 401711 Spring purple C8.4 4X (2) = kit
  • 401712 Spring greenC9.5 4X (2)
  • 401713 Spring grey C10.9 4X (2)
  • 401714 Spring black C12 4X (2)
HARDEST

Build Tips

RCBuilds.net Build, tip guide and youtube video - http://www.rcbuilds.net/builds/onroa...nt-project-4x/
Heave + Roll Damper Build Tips
Pivot Ball Nut Tip

Setups



Setup Tips

Ride Height Adjustment
Adjusting tweak with roll damper
Usage of washer on lower arm
Tuning ARS


Option Parts List


Social Media

Facebook 4-X Group

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Old 01-22-2018, 09:19 AM
  #481  
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Raced the P4X for the first time this past Saturday. Spent most of the day changing settings, installing the short stiffener, rebuilding shocks.

I noticed something funky about the front pull rods and I am not sure if its correct. Basically at default pull rod length, the suspension arms are connected to the point where lowering one arm all the way down actually pushes the opposite side up and vice versa. Has anyone else noticed this?

I shortened each pull rod by about 1MM and it almost completely relieved this strange side effect. I think if I go another .5mm on each side it will be completely gone. Thoughts?
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Old 01-22-2018, 10:37 AM
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Originally Posted by nubs View Post
Raced the P4X for the first time this past Saturday. Spent most of the day changing settings, installing the short stiffener, rebuilding shocks.

I noticed something funky about the front pull rods and I am not sure if its correct. Basically at default pull rod length, the suspension arms are connected to the point where lowering one arm all the way down actually pushes the opposite side up and vice versa. Has anyone else noticed this?

I shortened each pull rod by about 1MM and it almost completely relieved this strange side effect. I think if I go another .5mm on each side it will be completely gone. Thoughts?
Try 14.5 mm front and 15.5 mm rear on the pull rod and don't touch it again.. This the optimum length.
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Old 01-22-2018, 02:53 PM
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Originally Posted by Jochim_18 View Post
Try 14.5 mm front and 15.5 mm rear on the pull rod and don't touch it again.. This the optimum length.
Ok. Thanks.

Just to confirm you are talking about the pull rods that lay parallel with the chassis, inside of the bulkheads?
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Old 01-23-2018, 09:06 AM
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Originally Posted by nubs View Post
Ok. Thanks.

Just to confirm you are talking about the pull rods that lay parallel with the chassis, inside of the bulkheads?
Yes sir..
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Old 01-25-2018, 06:23 PM
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Originally Posted by Jochim_18 View Post
Try 14.5 mm front and 15.5 mm rear on the pull rod and don't touch it again.. This the optimum length.
So the rear being longer overall effect/reason is ?
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Old 01-25-2018, 07:14 PM
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Originally Posted by RKeasler View Post
So the rear being longer overall effect/reason is ?
More droop
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Old 01-26-2018, 02:44 PM
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Default Droop

So assuming then ride height as well ? How are you measuring droop, over ride height or under the hubs ?
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Old 02-07-2018, 02:57 PM
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Originally Posted by RKeasler View Post
So the rear being longer overall effect/reason is ?
Pullrod lengths affects weights transfer of the car and ride height.
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Old 02-13-2018, 05:54 PM
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How do you guys go about reducing weight in the car when you have full option parts? Just got VTD and total package is 29g, which is pretty heavy. I didn't take off the packaging yet but it will only shave a couple of grams. Even with aluminum screws I don't see the whole VTD set going below 25g.
The car is already pretty heavy. My car is 1003.6g with tires and all electronics installed w/o battery and body. The body's about 100g and battery about 270g. With VTD it will be 1400g. Can't go any lower for battery, can go lower on body by maybe 10g. What else? What do you guys do to keep it at minimum weight?
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Old 02-13-2018, 07:07 PM
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Originally Posted by snuvet75 View Post
How do you guys go about reducing weight in the car when you have full option parts? Just got VTD and total package is 29g, which is pretty heavy. I didn't take off the packaging yet but it will only shave a couple of grams. Even with aluminum screws I don't see the whole VTD set going below 25g.
The car is already pretty heavy. My car is 1003.6g with tires and all electronics installed w/o battery and body. The body's about 100g and battery about 270g. With VTD it will be 1400g. Can't go any lower for battery, can go lower on body by maybe 10g. What else? What do you guys do to keep it at minimum weight?
Without the big aluminum center brace the weight is quite comparable.
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Old 02-13-2018, 07:21 PM
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Originally Posted by erchn View Post
Without the big aluminum center brace the weight is quite comparable.
Oh I forgot about that. Thanks. It's been cut already so I can get the rear half off. Another 10-15g I guess. Anything else? I've already put titanium and alu screws wherever possible.
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Old 02-13-2018, 08:14 PM
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Get rid of the rear plastic bumper piece for a couple more grams.
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Old 02-13-2018, 08:20 PM
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Originally Posted by WagwanBumba View Post
Get rid of the rear plastic bumper piece for a couple more grams.
It will lose some weight, but that is a pretty crucial part of the car and somewhat delicate. Id be careful.
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Old 02-14-2018, 07:41 AM
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Originally Posted by erchn View Post
It will lose some weight, but that is a pretty crucial part of the car and somewhat delicate. Id be careful.
Pictures of Wilck's car showed it missing so I'll be giving it a shot
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Old 02-17-2018, 05:13 PM
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Default Connecting rods

Manual says 14 mm what do they need to be to get a median ride height of 5.5 mm or so with the linear suspension set installed ? Struggling with ride height from left to right since installing
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