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Vespa gear shims spacer shoulder ring

Distance Vespa transmission & distance Lambretta transmission

Here we show you how to properly distance the Vespa gearbox: Discuss the Vespa gearbox

To compensate for excessive backlash in the gearbox, you need shims of the appropriate thickness. We have these for Vespa and Lambretta engines high quality shoulder rings from bgm PRO included in our program.

The hardened and ground Compensating washers for spacing the gearbox generally have a tolerance of only + 0 / -0.04mm and are subjected to an extensive test in production per batch.

 

SI Faster Flow 004

 

Vespa gear shims / spacers / shoulder rings

Vespa Rally, Sprint, VNB etc.

Lovers of the elderly Vespa Largeframe Models like Vespa Rally, Sprint & Co can be pleased: the matching shoulder rings are in the range for these gears 2mm to 2,50mm finally available again thanks to bgm PRO.

As with the more stable Vespa PX Lusso variant, the shoulder rings have 4 lugs for locking. The knocking off of the individual nose is therefore no longer possible in the new design.

BGM6020S20

The shoulder rings for the older 3 and 4-speed gearboxes (recognizable by the fact that only one shoulder ring is required on the shift pin side), we have made for you in the standard dimensions.

BGM6020

Vespa PX Lusso and Vespa Smallframe

For the Vespa PX Lusso and Vespa Smallframe Transmission In addition to the standard sizes from 1,00mm to 1,40mm, we also offer the shoulder rings with 0,9mm. This dimension is often required for retrofitting the main shafts with other gear wheels in order to restore the correct play or if you want to use the stronger circlips according to DIN.

BGM6020_1

The bgm PRO shoulder rings are hardened and ground in parallel so that your gear unit reliably maintains the set play for a long time.

 

Gear spacer Vespa bgm PRO

bgm PRO shoulder rings

  • hardened and ground in parallel
  • Tolerance of only + 0 / -0.04mm
  • many strengths available
  • for clean shifting
  • and a durable transmission

 

 

Lambretta gear shims / spacers / shoulder rings

For the Lambretta gearbox, we can also offer you gear spacers in several strengths.

BGM6020_2

 

Gearbox shim -BGM PRO- Lambretta series 1-3

 

 

 

So you can easily disassociate your Vespa transmission

In order to adjust the play of the gear wheels on the main shaft, you need the corresponding Gear shims and for measuring the transmission, for example, this Feeler gauge in duplicate (2x) (!!)

vespa-gear-distance-feeler-gauge

It is best to start so that the gears will hold securely in the installed state and the transmission can be shifted cleanly into neutral in first gear with a shoulder ring of normal size 1,0mm.

BGM6020 004

If you start with too strong a shouldering under first gear, it could be that the gearshift cross is no longer free between the segments of the gear wheels and wants to thread into the gear wheels in neutral.

BGM6020 015

Therefore, it makes sense to first make the necessary compensation behind fourth gear to place.

BGM6020 002

Check gear play

You can now use the feeler gauges to check the play of the gear wheels.

The installation clearance should be in the range between 0,05mm and 0,15mm lie. In the case of gears that consist entirely of new parts, you can choose the game tighter, as all components are still getting used to each other.

BGM6020 006

Don't choose too little game

However, you shouldn't mean it too well and choose the game too narrow. In operation you achieve exactly the opposite. The hardened surfaces of the gear wheels and shoulder rings then tend to seize and so drastically increase the play within a short time.

If you are single Gear wheels If you want to swap from your gearbox, it is advisable to get one directly Set of shoulder rings in the range of 1,0mm to 1,3mm to be ordered.
And if you're at it anyway, you also have a look at that Switch cross on. Don't skimp on Gear oil and immediately use something new – and equate new seals .

Good tool, suitable for your scooter, always makes work easier.

BGM6020 019

Gear spacer Vespa bgm PRO

bgm PRO shoulder rings

  • hardened and ground in parallel
  • Tolerance of only + 0 / -0.04mm
  • many strengths available
  • for clean shifting
  • and a durable transmission