Honda-SOHC

SOHC.co.uk Forums => CB350/400 => Topic started by: Binman180 on September 02, 2017, 08:26:22 AM

Title: Cb400f Drive chain & Sprocket Replacement
Post by: Binman180 on September 02, 2017, 08:26:22 AM

Hello Ladies and Gents,

I am in the process of replacing my Drive Chain and Sprockets on my CB400F.

I purchased a Swift o ring / x ring chain and JT Front/Rear Sprockets in this Kit: http://www.wemoto.com/bikes/honda/cb_400_f_f1_400_4/75-77/picture/swift_heavy_duty_gold_sx-ring_chain_and_jt_sprocket_kit/

Unfortunately I didn't get my bike with the rear sprocket chain guard but am I missing something here?

The old Sprocket was flat on the outward face and had grooves on the inward face which the Sprocket Fastener bolt (Item 355) seemed to sit in and the new JT Sprocket is just flat allowing the Sprocket Fasteners to spin This can been seen in the attached picture comparing the two. Secondly, on the new Sprocket there is a lip which interferes with the flanged nut. Reversing the Sprocket doesn't let it sit any better against the Sprocket Fastener bolts.

Regarding the chain, The new chain measures ~25mm width at the pins, the old chain measures ~22mm.

Being a wider chain slightly, it appears to be catching on the engine casing, is this expected or normal or is there some sort of adjustment here? would neatly filing the case back on the catch points cause any issues? (See attached)

Thanks.

Title: Re: Cb400f Drive chain & Sprocket Replacement
Post by: Nurse Julie on September 02, 2017, 08:35:04 AM

Hi
Are you sure you have the right replacement kit there?. The chain you have is definitely too wide. You need a standard chain, not O ring or X ring. The last chain / sprocket I got for my CB400 from DSS fitted spot on.

Title: Re: Cb400f Drive chain & Sprocket Replacement
Post by: mike the bike on September 02, 2017, 08:39:55 AM

The rear sprocket chain guard is no longer available.   I removed mine from the old sprocket and fitted it to the new one by drilling and tapping holes in the sprocket and bolting it on with button head allen screws to resemble the original domed rivets.

+1 on what Julie said.

Title: Re: Cb400f Drive chain & Sprocket Replacement
Post by: Trigger on September 02, 2017, 08:40:30 AM

Swift chains are a budget chain out of China and are total rubbish.

Title: Re: Cb400f Drive chain & Sprocket Replacement
Post by: Binman180 on September 02, 2017, 11:23:53 AM

Ok, I'll send this kit back then and let wemoto know that this kit doesn't fit the cb400f as advertised.

I'll grab the sprockets from dss,.

As for the chain, my preference would be to have a coloured chain such as bright or gold finish rather than the self coloured one dss sells. Does anyone have any recommendations?

Title: Re: Cb400f Drive chain & Sprocket Replacement
Post by: Binman180 on September 20, 2017, 05:55:43 PM

Sorry to bring up this thread,

To close this thread out, I couldn't seem to find what I was after, so I ordered the chain and sprocket set from David Silver Spares and it fits fine.

Thanks

Title: Re: Cb400f Drive chain & Sprocket Replacement
Post by: mike the bike on September 20, 2017, 07:58:37 PM

Did you manage to keep the sprocket - chain guard?

Title: Re: Cb400f Drive chain & Sprocket Replacement
Post by: Binman180 on September 21, 2017, 02:29:17 PM

No, Unfortunately my bike didn't come with one when I bought it :(

Title: Re: Cb400f Drive chain & Sprocket Replacement
Post by: Integra99 on September 21, 2017, 03:02:28 PM

I may have a chain guard available..