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Lambretta  Kurbelwelle -BGM Pro HP Competition 58mm Hub, 110mm Pleuel- Lambretta DL/GP 125cc, 175cc, 200cc, 225cc, 250cc bgm Pro Artikel-Nr.: BGM11058N

bgm PRO Competition – new bgm crankshafts for Lambretta

From strength to strength!

bgm Pro

We have revised our crankshfts for Lambretta. We worked with the manufacturer for alsmost three years and we are very satisfied with the results. The testing lasted as long as the development work.

The new crankshafts for Lambretta are available with 58 mm and 60 mm stroke and 107 mm, 110 mm and 115 mm conrod:

Tested on the circuit

Darren Conneely of the Team Replay successfully tested the bgm PRO Competition crankshafts during the BSSO competition of the season 2018. Paul “Chalkie ” White of the Team Replay mounted on the Lambretta Group 4 the cylinder bgm RT 195 and the new crankshaft bgm PRO Competition. With a power of over 30 HP on the rear wheel and up to 11,000 rev/min that was a real endurance test.

And while we intensively tested these crankshafts on road, Darren, with our crankshaft, took the second place in the Group 4. Congratulations!

SLUK | Replay Racing BGM RT Group 4 Lambretta

Stroke 60mm, conrod 110mm

Crankshaft -BGM Pro HP Competition stroke 60mm, conrod 110mm- Lambretta DL/GP 125cc, 175cc, 200cc, 225cc, 250cc

BGM11060N

Stroke 60mm, conrod 107mm

Lambretta Kurbelwelle -BGM Pro HP Competition 60mm Hub, 107mm Pleuel- Lambretta DL/GP 125cc, 175cc, 200cc, 225cc, 250cc bgm Pro Artikel-Nr.: BGM10760N

Crankshaft -BGM Pro HP Competition stroke 60mm, conrod 107mm- Lambretta DL/GP 125cc, 175cc, 200cc, 225cc, 250cc

BGM10760N

Stroke 58mm, conrod 110mm

 Lambretta Kurbelwelle -BGM Pro HP Competition 58mm Hub, 110mm Pleuel- Lambretta DL/GP 125cc, 175cc, 200cc, 225cc, 250cc bgm Pro Artikel-Nr.: BGM11058N

Crankshaft -BGM Pro HP Competition stroke 58mm, conrod 110mm- Lambretta DL/GP 125cc, 175cc, 200cc, 225cc, 250cc

BGM11058N

 

The good features remained the same whereas the some other significant technical details were improved.

Improved features are:

  • Precision-ground crank pin holes on the crank webs for perfect anti twisting qualities
  • Precision-ground and coated crank pin
  • Forged connecting rod with CNC finishing
  • Hardened and precision-ground bearing surfaces and oil seal seats
  • Broad selection of stroke and connecting rod combinations
  • Quality assurance of each individual crankshaft through 100% ISO and QC certified manufacturer testing

 

Remaining features:

  • Full circle crankshaft for increased primary compression
  • Forged crank webs
  • Reduced engine vibration thanks to fully balancing with hidden pockets, copper and tungsten balance weights
  • Lubrication of the lower conrod bearing via two large lubrication slots
  • Hub pin diameter 22 mm

 

15 years experience in crankshaft development

There is 15 years of experience with building our Lambretta cranks. The development of this new and massively improved type has taken another three years of development work and tests to realize a shaft that offers maximum anti-twisting stability.

Team Replay used a selection of bgm parts during the BSSO race Series in 2018. Replay’s rider Darren Conneely finished the season in Group 4 on a 2nd overall using the new crank.

Crankshaft bgm PRO Vespa

The sought-after bgm PRO crankshafts Vespa  for Vespa PX, Vespa PK and Vespa V50 are now back in stock.

bgm PRO Kurbelwelle Vespa beim Scooter Center lieferbar!

Buy now Vespa crankshaft

Practical service kits for Vespa engine

In our online shop you will also find repair kits at a convenient price. The practical and useful sets include all the spare parts you need for the overhaul of your Vespa engine: Vesps repair kits

Vespa Revisionskit

Also recommended: bgm PRO Protection gloves

To protect your hands from injury or dirt we suggest youuse our work gloves by bgm PRO.

bgm protection Montagehandschuhe

 

Buy now Vespa crankshaft

Finally the new Qattrini C1 Smallframe Engine Casings are available.
For all tuning scooterists out there a must-have.

In the past few years the Smallframe tuning become more and more versile.
Smallframe engines with more than 40hp are no longer unique nowadays. The original Piaggio engine casings were produced for power around 10hp. The power given through cylinder kits like Parmakit, Falc or Qattrini are just too much for the original casings.

Quattrini has met demands and developed a very sophisticated engine housing..

We are going to show you the new features below.

The first eye-catching feature is the adapter for a mechanical water pump to install water-cooled cylinders.
If you make use of the classical forced air cooling, Quattrini also included an aluminum plug to close the bore of the pump.

The area around the floating ports and the cylinder base is made considerably more massive in order to prevent casing failure or cracks.

Quattrini already spindled the cylinder base to 64.8 mm diameter and 17.5 mm deep.
Including a range up to 21mm deep, which is suitable for the original spindled cylinder base diameter.

The area around the engine mount is adjusted so that you can use Tyres in the dimension of 3.50×10.

To compensate the weakening of the engine mount through the heel, this was reinforced with 4 solid ribs.

The two housing halves are connected with two centre pins and M6 screws, which will prevent the mounting with separate nuts. Because of the cast membrane and the lack of box centered on the crankcase cover gasket also eliminates the paper based engine seal. Common practice today is to use sealant in order to put the engine together sealant. We recommend from experience Dirko HT.

Condition as supplied to customers the casings are ready to use with direct intake cylinders. Additionally Quattrini also designed a box for all friends of membrane intake.
The connection to the crankcase must be machined if required, however, on its own power out.

Unfortunately, until now it is not absolutely clear which membrane can be used.
Therefore, we have already taken care of a solution and started to adjust aRD350 and V-Force³ Membrane.

Regarding the gear shift Quattrini stayed with the good old 2 cable technique.

The heart of the whole new design is based on the 48mm broadend crank shaft with 51mm rod.
This measure ensures that the press dimension of crank pin increases significantly
and the crankshaft is turning resistance in terms of not to being twisted.
The high quality 102mm conrod round off the overall good impression. The dimension of the center crankshaft bearing and cylinder base sealing is 69mm and is thus provided for the use of 102mm connecting rod.

As crankshaft bearings we are using 6304TN9C4 on both sides.
It is also conceivable to mount a NU205 on the generator side, but we do not recommend it.

The crankcase is additionally sealed with 2 oil seals from both sides with the dimensions 20x35x7. Here we can offer youseals in good old FPM-Quality.

Depending on the ignition used for this engine, a whole for the cable set must be made in the dynamo casing.

The air channel has been changed already for the use of Race Exhaust.

After the spectacular performance of the Quattrini engine casings at the start of the ESC season in Mirecourt, we are curious to see who is using them first.

Finally they are here! The long awaited X-treme crankshafts from Airsal. And if thtese guys are saying X-treme they really do mean it: 45mm stroke!!! That gives with a 50 mm bore diameter 88,3 ccm. And with the 47,6 mm bore more than 77 ccm!

Stroke it, baby!

Today available on the phone and during the next days in our e-commerce shop:
Read more

With the start of your ‘one stop online shop‘ we are glad to stock the even uprated version of our bullet proof Vespa 54 mm long stroke crankshaft for the Vespa Smallframe.

The Highend Full Race crankshafts runs very succesfully on some of the 30 hp+ FALCS. More stroke means more torque and more power. This makes the 54 mm stroke Smallframe crank the right choice where power matters.

Beside the proofed features as:

  • forged crank webs
  • 54 mm stroke
  • forged con rod with 105 mm length
  • silver big end bearing
  • 20 mm diameter of the big end pin
  • 20 mm bearing seat at flywheel seat
  • Made in Europe!

we gave the forged con rod a stunning CNC finish.

Link to our shop

54er solo