| 1929 |
| SERIAL NUMBERS |
- KJ or KL 28000 and up - Ballak #1
- KL? The "Special" was announced in May 1930 - there were no 1929 KL's - Dave Hennessey
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| EXHAUST |
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| GENERATOR |
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INTAKE VALVE GREASE CUPS |
- Grease cups were added under the intake valve springs starting in August 1929.
Dealers were urged to retrofit machines - Service 08-05-1929
- Later announced as standard for 1930 models - Dealer #30-1
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| HORN |
|
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| 1930 |
| SERIAL NUMBERS |
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| GENERATOR |
- 1929-1930 KJ used the DU-7 - Steve Blancard
and Steve Blancard
- "The Splitdorf DU-5" - The 1930 Rider's Manual; However, general agreement is that this is a holdover from the De Luxe, as they shared the same Rider's Manual - Blancard, Ruiter, Hennessey.
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| WHEELS |
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| CAMSHAFT |
- "A new camshaft gives quieter valve action and more efficient timing" - Dealer #30-1
- Intake lift was reduced... - Hendry - Cycle 1954
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| CYLINDERS |
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| 1931 |
| SERIAL NUMBERS |
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| GENERATOR |
- "The new Hendersons are fitted with larger generators, ..." - Dealer #31-1
- In 1931 the Auto-Lite generator replaced the Splitdorf until the end of Henderson production - Steve Blancard
- Auto-Lites were phased in during 1931. Early had DU-7, late had Auto-Lite - Jay Zanetti
|
| HEADLIGHT |
- "New headlamps" - Dealer #31-1 - colloquially known as "John Brown".
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| FRONT BRAKE |
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| HORN |
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