Difference between revisions of "Derbi"
From Moped Wiki
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*Max engine RPM: 6500 | *Max engine RPM: 6500 | ||
| + | See a PDF file of the flat reed engine repair manual [http://mopedcentral.com/images/DerbiEngineRepair.pdf here]. | ||
==Make a Water-Cooled Derbi== | ==Make a Water-Cooled Derbi== | ||
Please see [http://www.mopedarmy.com/forums/discuss/read.php?f=7&i=52675&t=49558 this discussion] from the forums. | Please see [http://www.mopedarmy.com/forums/discuss/read.php?f=7&i=52675&t=49558 this discussion] from the forums. | ||
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Revision as of 18:25, 2 March 2009
Engine Intake Info
- '86 and '87 SLE should be a flat reed engine (the flat reed engine came into play in '86)
- You can tell if it has a steel rear swingarm on a Variant step through, it is a flat reed
- If it has an alloy rear swingarm, it's piston port or pyramid reed
- the 81 SLE was pyramid reed
- Derbi RD's were pyramid reed
- Derbi Diablos and Lagunas piston port
- the Derbi DS50 scooter is flat reed
-quote by well known derbi connoisseur
Technical Specs
Piston port engines
- cylinder inducted
- stroke: 43mm
- bore: 38mm
- displacement: 48.7cc
- compression 8.5:1
- direction of rotation: counter clockwise facing magneto
Download the repair manual for Derbi piston port motors here.
Pyramid reed engines
- Pyramid 3-reed valve, Crankcase mounted
- stroke: 43mm
- bore: 38mm
- displacement: 48.6cc
- compression 8.5:1
- direction of rotation: counter clockwise facing magneto.
Flat reed engines
- Crankcase 2-reed valve induction with triple transfer port distribution
- stroke: 40mm
- bore: 39.87mm
- displacement: 49cc
- compression: 10:1
- direction of rotation: clockwise facing magneto.
- Max engine RPM: 6500
See a PDF file of the flat reed engine repair manual here.
Make a Water-Cooled Derbi
Please see this discussion from the forums.
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