Miniature High Performance SuperCharger for Hobby Engines

Contest Ended, Winner(s) have been selected.
Requires a belt driven supercharger with a replaceable 50 mm semi open impeller ( can be double impeller ) to boost into a 26 cc Gas Engine ( 13000 rpm). 50 mm Flywheel / Pulley at the engine drive shaft ( note 1:5 taper and M6 ) for belt drive to a small flywheel / pulley on the impeller shaft to overdrive the rpm. Wall thickness 1.5 mm, stainless steel impeller shaft resting on 2 ball bearings. Impeller is bolted on to the drive shaft M3 bolt. Intake is 16 mm diameter, a WYK series carburetor will be mounted on the Intake using 2 bolts of M5. Exit into the engine is mounted with 2 bolts of M5. See the links, drawings and picture to understand what i want and ask any questions.
Multiple Entries accepted - a workable 2 stage single volute is a likely 1st prize winner, 2nd prize - latest high performance single stage single volute design. As light as possible yet robust, small footprint, aesthetic design. Looking for correct clearance between volute and impeller.
Drawings in igs format.
Don't Wants:
A design that is not manufactureable.
Need a practical design where type of belts, bearings are commercially available. Not to use metal gears as they are heavy. Impeller design vanes not too close - need to be machined with standard tools.
  1. SolidWorks
  2. any other 3D software in igs files


1st Winner
#7 IGS file of Double Stage Impeller Super Charger by tsalpha
IGS file of Double Stage Impeller Super Charger
2013-07-25 21:18:06
#4 Double Impeller Super Charger by tsalpha
Super charger for Zenoah G260PUM eninge, with a double stage impeller.
2013-07-12 19:08:24
#8 PNG files of missing dimesions by tsalpha
Please check the dimensions I used to create the intake port. I couldn't find any information online.
2013-07-25 21:48:34
#1 Double Stage Impeller Revision 1 by tsalpha
Double stage impeller design. It will fit into a single volute body, to be designed. Just checking to see if impeller is what you were thinking.
2013-06-12 22:32:14
#2 Part damper bike by englix
Hi colleague,
I can do the job. I am mechanical engineer. Please to see I have experience for models 2D and 3D.
Please send better detail.
Thank You,
Ing. Paulo Lixandrao
2013-07-01 21:50:58
#3 Zenoah G260PUM Engine by tsalpha
Model of Zenoah G260PUM engine
2013-07-12 13:49:29
#5 Single Impeller Super Charger by tsalpha
Super charger for Zenoah G260PUM eninge, with a single stage impeller.
2013-07-12 22:47:15
#6 IGS file of Single Stage Impeller Super Charger by tsalpha
IGS file of Single Stage Impeller Super Charger
2013-07-25 21:14:03




Thu, 13 Jun 2013 17:03:22 +0000
Thu, 13 Jun 2013 16:52:59 +0000
Dear Sir:

I want to know why are you asking for the design instead of buying the whole thing to the manufacturer. If the reason is to get a cheaper part, you are likely wrong headed.

If the reason would be to design something similar to sell, it would be much easier for you to ask for a replica of the existing design, saving to you and the designers the testing of alternatives. In you request it is important to state the quantity you plan to manufacture as it will change the selection of materials and manufacturing processes.

Best regards



Wed, 12 Jun 2013 15:49:58 +0000
In picture - Zenoah G260PUM2 - The black plastic adaptor is redundant and supercharger is mounted directly into the cylinder inlet. The lower M5 bolt need access so the intake of the supercharger be lowered to give access to this bolt.

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