Difference between revisions of "Derbi"
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| + | ==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 | ||
| − | + | ===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 | ||
| + | ==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. | ||
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Revision as of 14:17, 27 November 2008
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
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
Make a Water-Cooled Derbi
Please see this discussion from the forums.
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