SIGH, Hawk 250 chain adjustment issue. Six attempts and I give up.

Megadan · 08-01-2024, 05:42 AM

The tightest point of the chain in the swing-arm travel is when the counter-shaft (Front sprocket shaft), swing arm axle, and rear wheel axle centers all line up. The 15mm chain slack figure is actually the specified adjustment when the swing arm is in this position.

If you ever want to know what the slack should be when the swing arm is hanging down you can unbolt the lower half of the rear shock and then lift the rear wheel up with a ratchet strap over the top of the bike. This will allow you to set the 15mm slack figure, and then once you finished and put it all back together you can measure the chain slack again.

In my experience the slack adjustment done this way ends up being around 38-42mm (1 1/2"-ish) on a 428 chain.

08-01-2024, 05:42 AM	#14
Megadan Join Date: Apr 2017 Location: Omaha, NE Posts: 8,089	The tightest point of the chain in the swing-arm travel is when the counter-shaft (Front sprocket shaft), swing arm axle, and rear wheel axle centers all line up. The 15mm chain slack figure is actually the specified adjustment when the swing arm is in this position. If you ever want to know what the slack should be when the swing arm is hanging down you can unbolt the lower half of the rear shock and then lift the rear wheel up with a ratchet strap over the top of the bike. This will allow you to set the 15mm slack figure, and then once you finished and put it all back together you can measure the chain slack again. In my experience the slack adjustment done this way ends up being around 38-42mm (1 1/2"-ish) on a 428 chain. __________________ Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124
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