KZR's Bikes of the Month for 2024

1976 Kawasaki KZ 400 without battery

More
26 Apr 2023 10:21 #883786 by kdx200
1976 Kawasaki KZ 400 without battery was created by kdx200
Can A 1976 Kawasaki KZ 400 be started(kicked) and RUN without a battery?

Please Log in or Create an account to join the conversation.

More
26 Apr 2023 13:21 #883793 by Wookie58
Replied by Wookie58 on topic 1976 Kawasaki KZ 400 without battery
No, the generator won't produce enough power at "kicking" speed to power the ignition

Please Log in or Create an account to join the conversation.

More
04 May 2023 14:24 #884237 by gordone
Replied by gordone on topic 1976 Kawasaki KZ 400 without battery
Could installing condensator be a option?

1981 KZ650-D4, with 1981 z750L engine (Wiensco 810 big bore).

Project:
www.kzrider.com/forum/11-projects/607213...sr-1981-z750l-engine

Please Log in or Create an account to join the conversation.

More
04 May 2023 17:42 #884244 by TexasKZ
Replied by TexasKZ on topic 1976 Kawasaki KZ 400 without battery
A large capacitor might work, but a modern regulator and a LiFePo battery might be a better choice.

1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24

Please Log in or Create an account to join the conversation.

More
04 May 2023 19:00 #884249 by Nerdy
Replied by Nerdy on topic 1976 Kawasaki KZ 400 without battery
In theory I think that could work, but large capacitors can be dangerous. Back in the days of CRT-based televisions, people would get knocked on their backsides (or worse) by the capacitors inside the TV.

I think an ignition - even for a small bike - would need a noticeably larger capacitor than would be found in a TV, making the idea more risky.

Also I think the bike would basically need to start on the first kick every time for the concept to work. I'm not a double-e and might very well be wrong on the math. TexasKZ's idea is probably the way to go. :)

1979 KZ400 Gifted to a couple of nephews
1967 Yamaha YCS1 Bonanza
1980 KZ440B
1981 Yamaha XT250H
1981 KZ440 LTD project bike
1981 GPz550
2013 Yamaha FZ6R

Please Log in or Create an account to join the conversation.

More
04 May 2023 23:25 - 05 May 2023 00:35 #884258 by Wookie58
Replied by Wookie58 on topic 1976 Kawasaki KZ 400 without battery

Could installing condensator be a option?
The stock generator is "regulated" by battery voltage (no battery means no regulation) so you would need a totally different generator set up (like a motocross bike or lawnmower) or you will fry the generator. Why do you want to run without a battery ? Also I believe the KZ400 has a "field coil" generator which requires a battery feed to the field coil to generate anything
Last edit: 05 May 2023 00:35 by Wookie58.

Please Log in or Create an account to join the conversation.

Powered by Kunena Forum

If you like KZR Please consider making a donation. Thank you.

KZRider is free, but not without cost.

Please consider chipping in a few bucks to help cover the cost of running the KZR servers.