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ADDY 50-1 A E50 pedal start 4-bearing 2.0 reed valve intake

€ 490,00
Ex Tax: € 404,96
Puchshop Directly available Last one in stock!
Model: 931084
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ADDY 50-1 A engine cases 2.0 version with stand mount and reed valve intake! (Puch Maxi E50 racing engine case) 

This is the first racing engine case for Puch Maxi mopeds to be released to the public market. Many advantages for racing have been implemented. Name of this product "ADDY 50-1 A engine case". Offcourse this engine case will be perfect for your street use Puch as a replacement!

The biggest achievement is the wide and flat surface with pre-positioning for reedvalve conversions WITHOUT welding. Warped, crooked and bad engine cases are now a thing of the past. 

The crankcase is prepared with a reed valve inlet on the crankcase and comes with a reed valve housing. The included reed valve housing is made to fit a Minarelli horizontal reed valve (see related products). Both surfaces are CNC flattened and therefore 100% fit ready.

important data:

  • Significantly more sealing surface at the cylinder mount than E50 and E50-A. 
  • 4 bearing pedal start engine
  • Positioning pins for the housing halves 
  • More threaded holes for ignition mounting (for more flexible ignition mounting) 
  • Cooling fins for controlled temperatures 
  • Optimised fluid chamber 
  • Cylinder stud hole pattern 44mm x 44mm
  • Diameter of cylinder neck is 48.4mm and can be spindled up to 53mm.
  • Basically a little more massive everywhere
  • 2.0 version with stand mount and reed valve intake!

Assembly instructions: 

The housing must be taken apart at the beginning. It has many attachment points for screwdrivers to split the housing. CAUTION!!! Caution is advised. The positioning pins are very precise, so the casing must be loosened very parallel from each other. The housing can be very tight when new. Targeted use of a screwdriver and rubber mallet can achieve the desired result here. 

After dismantling, the housing must be cleaned of any metal chips and oils. Then the positioning of the secondary shaft can be adjusted using the spacers supplied. (17/24mm washer between bearing and gear wheel for better bearing fit. 28/40mm washers between bearing and tight fit in the engine, right and left, as required. A minimum clearance of 0.15mm should be left). 

Finally, as with the original housings, sealant should be applied to the sealing surfaces on the cases. The mounting bolds that are needed: 7 pieces M6x35 and 6 pieces M6x50. The housing should ideally be screwed on with screws of strength 10.9 and 12-15Nm torque. Tighten the screws from the inside to the outside and always crosswise.

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Category: Engine parts
Type product: Carburetor
Type product: Reed valve
Weight:5000 gram

ADDY is a developer of new, improved Puch engines and parts. The design flaws of the original Puch parts are eliminated and the possibility of tuning the parts is taken into account. E.g. building a reed valve intake on a Puch Maxi is very easy with an ADDY crankcase set because it is already prepped this way.Thanks to ADDY, you can buy new crankcases for your Puch Maxi at Puchshop.de.

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