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KZ440 belt to chain drive 20 May 2024 16:02 #899415

  • Grcko
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I am swapping out my belt drive to a chain. I have the chain drive swing arm. I found out the swing arm is narrower than the belt one and the belt axle is to long. I was wondering if there is a different axel for the chain drive models. Any ideas would help as this is a daily rider and runs like a dream. Thanks. 
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As Always,

1983 KZ440
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KZ440 belt to chain drive 20 May 2024 17:15 #899428

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If you cant find the correct axle then a last resort may be to find the right die and just extend the existing threaded section and cut off the excess. 

or bring the bolt/axle to a machine shop and tell them what you want.
1980 kz750E1, Delkevic exhaust

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KZ440 belt to chain drive 20 May 2024 18:32 #899434

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That is what I was thinking might be the easiest way to go.  
As Always,

1983 KZ440

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KZ440 belt to chain drive 20 May 2024 19:25 #899435

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There are a few on ebay at the moment. Unsure how to distinguish belt from chain type. At least one of those on offer includes a measurement
1980 kz750E1, Delkevic exhaust

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KZ440 belt to chain drive 20 May 2024 21:07 #899436

  • sf4t7
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Or use a spacer on the axle to make up the difference.  ( 1 on each end might look better)
Scotty

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KZ440 belt to chain drive 20 May 2024 21:24 #899437

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You couldn’t just swap out the pulleys and belt for the sprockets and chain, using the existing swingarm and such? That is what I did when I converted my belt drive 750.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

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KZ440 belt to chain drive 21 May 2024 13:34 #899475

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Yeah, I swapped an 81 kz440 D2 LTD Belt with just sprokets and a chain. You'll have to cut off a belt guard mount but it has been fine.
81-KZ440-D2.
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KZ440 belt to chain drive 21 May 2024 15:38 #899481

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The chain hits the belt guard mounts on the belt swing arm. The chain swing arm has different  mounts for the guard and uses a different guard. 
As Always,

1983 KZ440

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KZ440 belt to chain drive 21 May 2024 16:42 #899492

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Seems like cutting off one chain guard mount would be less hassle than making wheel spacers and such.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough
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KZ440 belt to chain drive 03 Jun 2024 18:49 #900187

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Well, I went with the spacer option. Doesn’t look too bad. I put the chain I had on and set it all to specs. I started it up and ran it for a few minutes and all seemed good. 
Now for a newbie question. When a chain  says it is 106 links; is that actual links or pin count?  I do want to get a new chain as the old one is a bit rough. 
 
As Always,

1983 KZ440
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KZ440 belt to chain drive 03 Jun 2024 19:22 #900190

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Chain and sprockets really should be replaced as a set, unless the existing items are close to new.

They wear in together and (for example) putting a new chain on worn sprockets will prematurely wear the chain.
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
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