Locking a flywheel for removal?

mudcow007 · World Chat Champion Joined: 01 Feb 2012 Karma :

went to attack my oil leak last night, but stumbled at the first gate

how in gods green earth do you get the nut off the flywheel?

i tried sticking the bike in 5th an trying it that way but the flywheel still turned.

i didnt really fancy wedging something through the flywheel as thought it might damage something

i reckon a buzz gun would get it off, but im lacking said buzz gun

answers on a postcard please

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

Fold a piece of stout cloth over four or five times. A piece of denim is ideal. Jam it in the teeth of the primary transmission to stop it turning.

OR

Put the bike in gear and hold the back brake on.
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mudcow007 · World Chat Champion Joined: 01 Feb 2012 Karma :

nice, will try that

thanks

Nick_Giles · Could Be A Chat Bot Joined: 01 Jan 2012 Karma :

.
Also (not sure about the CG) but some flywheel retaining bolts are a left hand thread.!

You got a flywheel puller.?

Nick
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mudcow007 · World Chat Champion Joined: 01 Feb 2012 Karma :

yeah got one from buster which screw into the flywheel an pops it off, if that makes sense

Cyclingbiker · Spanner Monkey Joined: 05 Aug 2012 Karma :

I used a chain wrench to hold the flywheel steady whilst I undid the nut, it was a tight bugger and the spanner needed tapping with a hammer while applying steady pressure to shock the nut free. I did try to use a rubber strap wrench to hold the flywheel but I found it slipped to easily under heavy load. The chain wrench has teeth on the part of the handle that contacts the flywheel that dig in if you apply pressure the right way and hold it rock steady. It didn't mark the outside surface too badly when I did it so I wouldn't worry about that Thumbs Up

https://www.toolstation.com/shop/Automotive/Mechanics+Tools/Chain+Wrench+300mm/d60/sd180/p56261

The actual removal of the flywheel was comparatively easy using the LH threaded flywheel puller I got from Wemoto. You screw it in with the central rod backed all the way out then wind it back in to push the whole thing off of the shaft. It can be a tight fit, especially if it has never been removed so be wary.
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