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WebshopVespa Smal...Spare Part...Input Shaft Assembly 21-19-15
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Input Shaft Assembly 21-19-15

-10 teeth, 4-speed/PK, DRT
CESIO "short 4th gear/short
3rd gear", for Vespa 50 S 3°
/Special V5B3T (A)/(N)/PK50
SS/XLS/Ape 50

Clean gear changes while you are accelerating can be decisive over defeat or victory. It is almost an art to be able to setup your gear ratios ideally to match the area of your rev range where maximum power is available (the power band). The VESPA gear box components have seen a lot of experimentation and development in recent years. DRT are at the forefront of this research and have suitable gear box parts available to suit most possible motor setups.

The problem of a clean gear change between 3rd and 4th gears, especially with performance enhanced motors, is shared between both the large and small frame VESPA motors. DRT offers new gear ratio setups with their range of input shaft assemblies. Maximum engine revolutions in 4th gear with a 150 kg load over a longer distance or race use of the 4th gear, everything is possible.

 

DRT input shaft assemblies are made of a tougher than standard grade of steel and then hardened through tempering. They are therefore extremely durable and so offer an ideal extension to the vast range of existing gear box components available. The gear ratios are much easier to adjust to the particular motor characteristics required. Most of the input shaft assemblies are equipped with a fine M11 grade thread and the nut to fit is also included.

 

Conclusion: These DRT input shaft assemblies are essential for all serious racers and sprinters. Rally going scooterists have also learnt the benefits of top quality adjustable gear box ratios.

 

SIP-TIP: If you want to raise the ratio of your gear box start with the primary drive gears. The input shaft upgrade is first, followed by the adjustment of the individual gear cogs on the output shaft. Never forget to order a new gear selector cruciform (at best the DRT item) and fresh gear box oil. Last but not least the SIP gear box shaft assembly spacers help you find the ideal output shaft assembly end float for safe and enduring use of your motor.

 

You can choose from the following DRT input shaft assemblies:

 

CESIO input shaft assembly Z 21-19-15-10 : A shorter 3rd and 4th gear for all 50cc VESPA with either 20 or 21 cog teeth on the 3rd gear cog and 25 or 26 teeth on the 4th gear cog and APE three wheelers. This conversion is especially popular with APE owners and is used by Sicilian 500m APE sprint racers. Another tried and tested combination is the original 4th gear of the ET3/PK VESPA models with 46 teeth.

Perfect with original Vespa/APe gears: Z  46 (DRT Z47) - Z 49 - Z 54 (DRT Z 51) - Z 58.

Conclusion: A shorter 3rd and 4th gear for all 50cc VESPA with either 20 or 21 cog teeth on the 3rd gear cog and 25 or 26 teeth on the 4th gear cog and APE three wheelers.


OEM Numbers (for the purpose of comparison)  Clust APE-PK50 213.46/EXÜ.2.19 (DRT)


Customers also searched for this article with:  Input Shaft Cog Wheel Set


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$98.32
Art.No.
40430213
640g / piece
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icon scootermodels This product fits the following models
  PIAGGIO
divider Producer/Model divider cc divider Type divider Engine divider Yr. of Const. divider Extra
PIAGGIO APE 50 50 TL1-2T 2T AC `69-`80 -> 8883
PIAGGIO APE 50 50 TL1-2T 2T AC `69-`80 TL1T 8884 ->
PIAGGIO APE 50 FL / FL2 50 TL6T 2T AC `89-
PIAGGIO APE 50 FL3 50 TL5T 2T AC `96-
PIAGGIO APE P 50 ( Vespa Car ) 50 TL3T 2T AC `80-
PIAGGIO APE TM P 50 / Elestart 50 TL4T 2T AC `85-
  VESPA
divider Producer/Model divider cc divider Type divider Engine divider Yr. of Const. divider Extra
VESPA 50 S 50 V5SA1T 2T AC `63-`84 22445 ->
VESPA 50 Special 50 V5B3T 2T AC '75-'83 (A) w/o speed liwith
VESPA 50 Special 50 V5B3T 2T AC '75-'83 (N)
VESPA PK 50 SS / Elestart 50 V5S1T 2T AC `83-`86
VESPA PK 50 XLS 50 V5S2 2T AC `86-

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