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Race Tech Set Up on 06 YZ450

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I recently acquired a set of forks and shock from a 08 YZ450. They were revalved by Steve Mechado in Dublin for MX. The forks have the RT valves in both the forks (Base Valve). The shock has the Rebound Seperator Nut and gold valve. I ride a 06 YZ450 and mostly in the woods. I'm looking to revalve these forks and shock myself but need guidance on direction.

Here is the current valving stacks:

MID:

Nut

1. 16x1.60

2. 2ea 10x.25

3. 12x.11

4. 14x.11

5. 16x.11

6. 18x.11

7. 13x.11

8. 4ea 20x.11

MV

9. 20x.25

10. Spring

11. Brass Spring Retainer

12. 16.50x3.46

BASE:

Nut

1. Spring Plate

2. Spring

3. 7.90x3.75

4. 32x.55

BV

5. 5ea 26x.15

6. 4ea 32x.15

7. 2ea 24x.10

8. 32x.15

9. 2ea 32x.10

10. 30x.10

11. 28x.10

12. 26x.10

13. 24x.20

14. 21x.10

15. 19x.10

16. 17x.10

17. 15x.10

18. 20x1.60

19. 3ea 11x.25

20. 14x.10

21. 16x.10

22. 18x.10

23. 20x.10

24. 2ea 22x.10

SHOCK:

Rebound Nut, 1.5mm bleed with a 13x.10 shim on nut.

1. 19x.70

2. 25.4x4.10

3. 26x3.0

4. 21x.25

5. 24x.25

6. 26x.25

7. 28x.25

8. 30x.25

9. 34x.25

10. 23x.10

11. 2ea 34x.20

Shock Valve

12. 9ea 38x.20

13. 26x.15

14. 2ea 38x.25

15. 23x.10

16. 38x.20

17. 34x.25

18. 30x.25

19. 28x.25

20. 26x.25

21. 24x.25

22. 18x.25

23. 41x4.5

SHOCK EXCHANGE:

1. 9x.30

2. 2ea 11x.30

3. 2ea 16x.30

4. 21.45x.80

5. 21.45x.15

6. 22.85x.60

I ride aggressive in the woods through rocks and roots. I want the bike to absorb the big hits while staying plush and not blow through the stroke. I tried the current set up out last weekend just as a reference and the bike was deflecting off of the rocks transferring the shock straight to the bars. I weigh 214 in plain clothes and my springs are .52 in my forks and 5.8 on the shock. I also had 150PSI in the shock.

Thanks!

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I recently acquired a set of forks and shock from a 08 YZ450. They were revalved by Steve Mechado in Dublin for MX. The forks have the RT valves in both the forks (Base Valve). The shock has the Rebound Seperator Nut and gold valve. I ride a 06 YZ450 and mostly in the woods. I'm looking to revalve these forks and shock myself but need guidance on direction.

Here is the current valving stacks:

MID:

Nut

1. 16x1.60

2. 2ea 10x.25

3. 12x.11

4. 14x.11

5. 16x.11

6. 18x.11

7. 13x.11

8. 4ea 20x.11

MV

9. 20x.25

10. Spring

11. Brass Spring Retainer

12. 16.50x3.46

BASE:

Nut

1. Spring Plate

2. Spring

3. 7.90x3.75

4. 32x.55

BV

5. 5ea 26x.15

6. 4ea 32x.15

7. 2ea 24x.10

8. 32x.15

9. 2ea 32x.10

10. 30x.10

11. 28x.10

12. 26x.10

13. 24x.20

14. 21x.10

15. 19x.10

16. 17x.10

17. 15x.10

18. 20x1.60

19. 3ea 11x.25

20. 14x.10

21. 16x.10

22. 18x.10

23. 20x.10

24. 2ea 22x.10

SHOCK:

Rebound Nut, 1.5mm bleed with a 13x.10 shim on nut.

1. 19x.70

2. 25.4x4.10

3. 26x3.0

4. 21x.25

5. 24x.25

6. 26x.25

7. 28x.25

8. 30x.25

9. 34x.25

10. 23x.10

11. 2ea 34x.20

Shock Valve

12. 9ea 38x.20

13. 26x.15

14. 2ea 38x.25

15. 23x.10

16. 38x.20

17. 34x.25

18. 30x.25

19. 28x.25

20. 26x.25

21. 24x.25

22. 18x.25

23. 41x4.5

SHOCK EXCHANGE:

1. 9x.30

2. 2ea 11x.30

3. 2ea 16x.30

4. 21.45x.80

5. 21.45x.15

6. 22.85x.60

I ride aggressive in the woods through rocks and roots. I want the bike to absorb the big hits while staying plush and not blow through the stroke. I tried the current set up out last weekend just as a reference and the bike was deflecting off of the rocks transferring the shock straight to the bars. I weigh 214 in plain clothes and my springs are .52 in my forks and 5.8 on the shock. I also had 150PSI in the shock.

Thanks!

why don't you call RT and see what they recommend?

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I did that already. I'm waiting for a response but figured I throw it out there to see if any one had any input.

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I recently acquired a set of forks and shock from a 08 YZ450. They were revalved by Steve Mechado in Dublin for MX. The forks have the RT valves in both the forks (Base Valve). The shock has the Rebound Seperator Nut and gold valve. I ride a 06 YZ450 and mostly in the woods. I'm looking to revalve these forks and shock myself but need guidance on direction.

Here is the current valving stacks:

MID:

Nut

1. 16x1.60

2. 2ea 10x.25

3. 12x.11

4. 14x.11

5. 16x.11

6. 18x.11

7. 13x.11

8. 4ea 20x.11

MV

9. 20x.25

10. Spring

11. Brass Spring Retainer

12. 16.50x3.46

BASE:

Nut

1. Spring Plate

2. Spring

3. 7.90x3.75

4. 32x.55

BV

5. 5ea 26x.15

6. 4ea 32x.15

7. 2ea 24x.10

8. 32x.15

9. 2ea 32x.10

10. 30x.10

11. 28x.10

12. 26x.10

13. 24x.20

14. 21x.10

15. 19x.10

16. 17x.10

17. 15x.10

18. 20x1.60

19. 3ea 11x.25

20. 14x.10

21. 16x.10

22. 18x.10

23. 20x.10

24. 2ea 22x.10

SHOCK:

Rebound Nut, 1.5mm bleed with a 13x.10 shim on nut.

1. 19x.70

2. 25.4x4.10

3. 26x3.0

4. 21x.25

5. 24x.25

6. 26x.25

7. 28x.25

8. 30x.25

9. 34x.25

10. 23x.10

11. 2ea 34x.20

Shock Valve

12. 9ea 38x.20

13. 26x.15

14. 2ea 38x.25

15. 23x.10

16. 38x.20

17. 34x.25

18. 30x.25

19. 28x.25

20. 26x.25

21. 24x.25

22. 18x.25

23. 41x4.5

SHOCK EXCHANGE:

1. 9x.30

2. 2ea 11x.30

3. 2ea 16x.30

4. 21.45x.80

5. 21.45x.15

6. 22.85x.60

I ride aggressive in the woods through rocks and roots. I want the bike to absorb the big hits while staying plush and not blow through the stroke. I tried the current set up out last weekend just as a reference and the bike was deflecting off of the rocks transferring the shock straight to the bars. I weigh 214 in plain clothes and my springs are .52 in my forks and 5.8 on the shock. I also had 150PSI in the shock.

Thanks!

 

 

Springs look ok but the fork valving is not providing any resistance and the suspension is riding too low in the stroke (harsh part of the damping curve) - try this modification with the existing valves/shims -

 

MID:

Nut

1. 16x1.60

2. 2ea 10x.25

3. 12x.11

4. 14x.11

5. 16x.11

6. 18x.11

7. 13x.11

8. 4ea 20x.11

MV - ideally this should be a midvalve stack instead of a check plate but work with it for now

9. 20x.25

10. Spring

11. Brass Spring Retainer

12. 16.50x3.46

BASE:

Nut

1. Spring Plate

2. Spring

3. 7.90x3.75

4. 32x.55

BV

5. 5ea 26x.15 - remove these, the 4ea 32x.15's should go directly against the valve body

6. 4ea 32x.15

7. 2ea 24x.10 - remove - with your weight you don't need the crossover

8. 32x.15 

9. 2ea 32x.10

10. 30x.10

11. 28x.10

12. 26x.10

13. 24x.20

14. 21x.10

15. 19x.10

16. 17x.10

17. 15x.10

18. 20x1.60

19. 3ea 11x.25

20. 14x.10

21. 16x.10

22. 18x.10

23. 20x.10

24. 2ea 22x.10

This should help the valving and springs work together to provide mutual resistance - as it is now the springs are doing all the work.

Keep the shock as is for now.

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Is there any advantage to running a check plate rather then a stack?

 

A check plate is old technology - there's a lot of benefit to a properly tuned midvalve with a shim stack/spring arrangement. Without the midvalve providing any resistance all of the hydraulic force is placed on the basevalve stack.

 

However it's what you have for now so try tuning the basevalve as per my suggestion.

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