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 LARGE DIAMETER FRONT DRIVE SHEAVES

Sheave set supplied with special bronze bushing installed with retainer bolts

5.900" Diameter 

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CHOOCHOO RAMP SETS

Manufactured from high quality proprietary tool steel and heat treated to 43/45 rockwell C.  

Ramp profile features continuous curve with no defined angle changes to interrupt / stall  roller travel.

 Close tolerances on stall angle for better car reaction.

 Lightweight design is 15 grams/set less than conventional models

20 -- 26 -- 22

18 -- 28 -- 22

15 -- 38 -- 34 -- 22

15 -- 32 -- 28 -- 22

15 -- 32 -- 24

15 -- 30 -- 24

15 -- 30 -- 22

15 -- 28 -- 22

15 -- 26 -- 22

14 -- 36 -- 32 -- 24

13 -- 36 -- 32 -- 24

13 -- 36 -- 32 -- 22

 13 -- 39 -- 34 -- 24 

12 -- 38 -- 34 -- 24

12 -- 37 -- 33 -- 24

12 --36 -- 32 -- 24

12 -- 36 -- 30 -- 24

12 -- 34 -- 31 -- 24

12 -- 33 -- 30 -- 24

12 -- 32 -- 28 -- 22

12 -- 32 -- 24

12 -- 30 -- 37 -- 33 -- 24

12 -- 30 -- 36 -- 32 -- 24

12 -- 30 -- 24

12 -- 28 -- 22

12 -- 28 -- 20

 

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SPECIAL HARDENED ROLLER SET

Constructed from hardened steel on outside surface with bronze bearing inside.

 The perfect mate for our hardened ramps but may be used on standard ramps for better wear.

Available in flat or barrel shaped face.

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SLOTTED CLUTCH FACE

Promotes better cooling and allows for visual inspection of inside components.

Available in Black or Silver color

center hole 5/16" or 9/16" (for barrel lock)

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ARM BOLT KIT

High strength aircraft  3/16" full diameter bolts -- will not cut into the arms or spring carrier like standard Allen bolts do. Designed for double shear applications.

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 CHOOCHOO DRIVE BELTS

 

9" type offered in stiff and flexible types  

.....

LH12   flexible -- .820"-->.860" width 

(these measure wider apx. - .025"  because the belt is taller)

.....

LH003   stiff design -- .790"-->.820" width 

                                                    

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WEIGHT KITS

# LH - WK

Complete kit contains six weight sizes -- choice of --> 1 gram -- 2.5 gram -- 3 gram

 3.5 gram --  4 gram -- 4.5 gram -- 5 gram -- 5.5 gram -- 6 gram -- 7 gram -- 8 gram

Supplied in handy plastic carrying case.

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Individual Kits contain six weights of each size

# LH-WK--size

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PRIMARY SPRINGS (front unit)

P115     Purple spring  (73#)

P117     Green spring  (90#)

P120     Black/Yellow spring  (105#)

*** spring rates are stated at installed height and may vary from spring to spring. 

Shown as reference only.

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ChooChoo Helix Cams

Our helix cams are offered in a wide variety of configurations in straight and multi angle designs.    "Half"  holes provided in the middle of the tuning range for fine adjustments.

34  ---  36  ---  38  ---  38/42  ---  38/42/46  ---  38/43/47 --- 38/44  ---  38/44/48  ---  38/45/49  ---  38/46  ---  38/46/50  ---  38/47/51 --- 38/48  ---  38/48/52 --- 38/49 --- 38/50 --- 38/52  ---  40  ---  40/43/46  ---  40/44  ---  40/46  ---  42  ---  42/46  ---  44  ---   46     46/52  ---  48  ---  48/52 

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SECONDARY SPRINGS

SC010     Standard -- yellow

SC011     Heavy duty -- red

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SECONDARY

Alternate 7.25" diameter with louvers

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