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I changed a front toe angle (to slightly toe out), then I feel that the car is very much dialed. I will try ASC #27.5 oil for the rear shocks next time.

[EDIT]
Instead of changing the shock oil, I compared three different weight settings (adding 0g, 5g or 10g weight right by the servo) to check twitchiness. With 10g weight, I felt that the car was dull. I think that 5g is best and am happy with this car.

RC10 Laydown Ver.3

I adopt front and rear suspensions from ver.1 (page 3) and chassis from ver.2 (page 5) and run this car on outdoor dirt and indoor clay tracks.
<Front>
Same as the ver.1 (page 3), differences are
・V1 big bore front shock body (23mm), gray V1 spring, 1.6 piston ASC#32.5 oil
・Shock positions: Center hole on the arm and tower
・Front camber link: Center hole on the shock tower and outer hole on the hub carrier
・Custom Works 5deg caster block (-5deg)
・Stock inline steering block

<Middle>
Same as the ver.2 (page 5), differences are
・From front to rear: radio receiver, ESC and 10g weight below the capacitor
・10g below the battery near the motor cooler

<Rear>
Same as the ver.1 (page 3), differences are
・V2 big bore rear shock body (31mm), gray V1 spring, 1.7 piston ASC#30 oil
・Shock position: Outer hole on the arm and lower inner hole on the tower
・Rear camber link: Inner lower hole on the bulk head and inner hole on the hub carrier (1.5mm spacer below the ball stud)
・The shock tower, body post, and additional spacers and washers on the transmission case are same as ver.2 (page 5)
・Kyosho RB7 wing mounts <Video>
https://youtu.be/2dWlTIcZPjw

In the video, the inner higher hole on the bulk head and 2mm spacer below the ball stud on the rear hub carrier are used (more roll). I feel better with the current setting (less roll by using the lower hole).

<RC10Mid Ver.2 Final>

I felt that the car bounced too much. I changed the rear shock oil from ASC30 to ASC27.5 and added weights shown in the picture below. Then, the total weight was 1562 g with a thin shorty Lipo battery.
https://www.youtube.com/watch?v=MhaWYPo1j9A

Please see after 1:12 for the new setting.

After this video, I removed 10g below the pinion gear to make the car quicker.

It's definitely way more stable with the lighter oil. Do you have any video of it with the 10g removed...?

Thank you for your comment. I did not shoot video after removing 10g... I added weights and used the lighter oil to stabilize the car on bumpy surface. Those worked well but the car lost agility (spread weight distribution), turned less in corners (increased rear grip and rearward weight bias) and needed longer distance before the jump (additional weights). ( ) is my guess and may be wrong. Removing 10g slightly modified those characteristics.

My friend's RC10 as shown in page 5. He replaced the world's re-re chassis to C stamp.

https://youtu.be/OVrS_7Ih5dw

https://youtu.be/cMXGQ3v-11U


Weight distribution is similar to my RC10 Ver. 3 in page 4. But he uses the original rear hub carrier, Kyosho big bore shocks, and CVA AS9911. The rear shock tower is same height as the original (Ver.3 uses the shorter one). He uses the forward transverse battery position for jumps.

<RC10Mid Ver.2>

I changed additional weight positions for the track in above videos (because of jumps).

<RC10Mid Ver.2>
The car turns better with this camber link position (the second hole from the out side on the B4 rear hub carrier)

<RC10 Laydown Ver.4>
I modified RC10 laydown ver.2 in page 5. Rear shocks are placed in front of rear arms. I will report how to make it.

<RC10 Laydown Ver.4>

To move the rear shocks forward, you need to make a shock tower mount.
I used the RC10GT transmission brace (ASC7670) and RC10B44 shock tower mount (ASC9714) and those are combined.


My friend made it for me and used aluminum to strengthen it.
I made an additional transmission brace which connect the forward transmission holes.


Spacers are required to keep the additional brace flat and the lowest holes on the shock tower (ASC9904) require countersinks.

I have to say what an outstanding build!

I might try something similar with my mid motor conversion. Currently I have the shocks and tower all the way in the back, which places the wing even further back.

Very inspirational!

Thank you Chewbacca.

<RC10 Laydown Ver.4>
<Front> ・Stock front A arm and caster block (30 degree) and RC10 axle
・Stock ballstud with one thin shim + 1mm spacer below it on the steering block
・Front bumper from Shapeway (rapid_rc)
・Extended front shock tower from FibreLyte
・B6 V2 big bore front shock (23mm), gray V1 big bore spring, 1.6 piston, #400 oil
・Shock position: Outside hole on the arm and middle on the tower
・Shock tower, nose tube and suspension mounts are tightened with hex nuts
・RC10GT steering bellcrank and B3 steering bellcrank for connecting servo horn.
・Nose tube on the right side was cut down.

<Middle> ・From front to rear: . radio receiver, 15g weight, ESC, 10g below the capacitor
・For the battery holder, button screw is used on ESC side and cap screw on other side
・The battery cup is fixed with one screw (cap screw side) and double-sided tape
・ RC10 steering servo holder is used in front of the motor to hold a short Lipo battery
・Motor cooler is also used to hold the battery
・10g below the battery in front of the motor

<Rear>
・B44 rear shock tower and wing mount
・B6 V2 big bore rear shock (31mm), gray V1 big bore spring, 1.7 piston, #300 oil
・the center hole on the shock tower and outside hole on the arm are used for mounting the rear big bore shocks
・B4 top shaft with V2 slipper
・Upper camber link is attached to the outer upper hole of the bulk head and inner hole on the hub carrier
・Dynotech motor mount with three blue spacers (3mm) to move the motor inward
・AE stock rear arm
・ASC9911 CVA shaft, ASC7367 RC10GT 1.5 degree rear hub carrier (toe-in 1.5+3 = 4.5 degree total), and RC10 stock rear wheel
・Rear bumper is RC10GT front bumper (AS#7774) where TC4 block carrier bushing (AS#3874) and hex nut are used to attach to the chassis

<Impression>
・ The car is twitchy because of the short wheelbase. I noticed that the wheelbase of RC10NDS buggy is same as long wheel base RC10
・ I use ASC9911 CVA shaft which is very hard to find and am worried about replacement

<RC10 Laydown Ver.5>
<Front> ・Dynotech front arm
・RPM Front bumper
・Front shock tower from FibreLyte, "RC10 tower-Raymond Power"
https://www.rc10talk.com/viewtopic.php?f=38&t=33388&sid=6da407611632cce403fb197ffc9ad35f#p379717
・Shock tower, nose tube and suspension mounts are tightened with hex nuts
・B74 V2 big bore front shock body (24mm), white V1 spring, 1.6 piston #400 oil
・Shock positions: Center hole on the arm and tower
・Front camber link: Upper hole on the shock tower and outer hole on the hub carrier
・Custom Works 0deg caster block
・Stock inline steering block
・Stock ballstud with one thin shim + 1mm spacer below it on the steering block
・RC10GT steering bellcrank (please see page 3 for details)

<Middle> Same as the ver.4 (above), differences are
・From front to rear: radio receiver, 25g weight ESC, and 10 g below the capacitor
・17g below the battery near the motor cooler

<Rear> Same as the ver.4 (above), differences are
・Dynotech rear arm (flipped)
・B6 V2 big bore rear shock body (31mm), white V1 spring, 1.7 piston #300 oil
・Shock position: Center hole on the arm and tower
・Rear camber link: Outer upper hole on the bulk head and inner hole on Custom Works hub carrier (B4 short ball stud)
・B44 rear CVA
・Custom Works rear axle spacer 0.125inch and B4 rear axle wheel spacer

<Impression>
・Easy to drive with the longer wheelbase (B6.1DL for comparison) ・I believe this is the last version of NDS buggy

<RC10 LWB (long wheel base with 13 mm big bore shocks) >

This car is based on RC10 SWB stock in page 6.
I remove the rear brace and use the long wheelbase position in rear arm mounts,

Front 1.7mm piston 450CS oil (Kyosho) white 13mm spring (shock tower center, arm outside)
Rear 1.8mm piston 350CS oil (Kyosho) gray 13mm spring (shock tower second from outside, arm outside)

I use smaller X-rings (Japanese company TRION).
I use M3x25mm set screws and the blue spacer in the pic is 3mm thick.

<B3 with big bore shocks>
This car is same as RC10B3 in page 6.

<Front>
12X23mm V1 big bore shocks (buggy front)
1.6mm piston 400CS oil (Kyosho) blue 12mm V1 spring
Shock tower center hole, arm inside The blue spacer on the top is 3mm thick. ASC6473 shock bushing is used.

<Rear>
12X36mm V1 big bore shocks (truck rear)
1.7mm piston 300CS oil (Kyosho) blue 12mm V1 spring
Shock tower center hole, arm outside ASC6473 shock bushing is used on the top. M3X20mm set screw, 1mm spacer, and ASC91721 (long shock eyelet and pivot ball) are used on the bottom.

#All spacers are placed in front of the RC10B4 rear hub carrier to make a wheelbase long.