Kreidler performance

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Revision as of 13:37, 1 October 2010 by Mycider (talk | contribs) (copy over info from Kreidler category page)
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Kreidlers like to stay stock, but a few things can help on the hills.

The first mod - Removing the baffle in the exhaust pipe.

  • The end-cap unbolts, a 10 or 12mm, hit it with carb cleaner, and pull it out.
  • Drilling a little to weaken it helps if it is stuck.
  • It adds a crackly-crack-crack when you let off or hang at like 1/3 throttle. Sounds cool
  • Adds 1-3 mph. Improves acccel in your head only.

(If you have a Batavus, the 30mph pipe will bolt on nicely to a Kreidler. It seems to add acceleration and 2-3 mph.)

Second mod - Take off the airbox and using panty-hose as a filter.

This caused my bike to actually hit 41 max downhill with two people, 36-38 down grade flats, and 27-33 sustained on up and down roads. This is with a 64 jet-12mm bing. A 68 improves accel, but limits top speed. I need to try a 66, that might be the trick.

Third mod - Second gear clutch spring mod---coming soon with pics

This mod involves two people and patience.

Remove second gear clutch, disassemble - don't lose your chin, and removing with a belt sander 5-13 or 17 coils of the single spring-it only has one. What this mod does, is cause a lag until the second gear hits-shifts and lets the motor rev up past 1/4 throtttle before shifting. Stock is 9-11 I got mine to 13 by taking 5 off. I am shooting for 17-19 shift-downshift to help keep the revs up on the hills.
CAUTION -- It is very dangerous and requires two people for reassembly because the sping is so much tighter.

Fourth mod - Carb upgrade to 14mm

This needs a new body and intake

I have not yet got the carb or intake, but you can reuse the top part of the carb. I'm thinking the 68 jet would work in the 14mm.