I need a friendly engineering co with a big press or similar - can anyone help?

[Badcat]

hello all.
i have an issue.
i'm restoring this:


no - thats not the issue (but i can understand how you might think that)

the problem is i need to remove an incredibly stubborn swingarm pivot bolt. ive been trying a week with all sorts of violence.

i think i need a dirty great press and the help of a professional.



this isnt working either....

anyone know someone that can help me?
i cant start until i get the pivot out - need the frame off to powdercoat and the pivot goes through the motor too.

dont mind paying for help.

ken

[ellipsis]

...big hammer, you know, really big...a drift and some silly cunt to hold the drift for you...

[haydes55]

Have you tried heat yet? Don't put a naked flame onto the bike if it's covered in flammable substances..... On the flammable note, have you tried CRC or penetrating oils etc?

[Badcat]

Have you tried heat yet? Don't put a naked flame onto the bike if it's covered in flammable substances..... On the flammable note, have you tried CRC or penetrating oils etc?

have done CRC etc but not heat.
very close to the motor (in fact the pivot runs through the engine case)
ken

[Imagineering]

Might be easier than you think. First ascertain where the Bolt is stuck; Does the Swingarm Move? If you undo the rest of the Motor Mounts does the Motor move? What I'm getting at here is trying to isolate which part of the Frame/Engine/Swingarm the Shaft is stuck to. Keep in mind that, even if the Swingarm moves, the Outer Bearings/Bushes may be seized to the Bolt/Shaft.
Heat is a very good idea, but clean up any inflammables first, like Chain Oil etc
What can work is to gentle heat the offending area and then spray CRC into the joint whilst it is still warm. What happens here is that, the Heat expands the Air held between the Parts and spraying of CRC cools the Parts and sucks the CRC deeper into the seized joint. You may need to do this a few times.

Good Luck.

[buggerit]

That thing brings back bad memories of RV 90,s and 125,s

[Akzle]

get a bigger hammer.

But srsly. heat.
Do you not own an hydraulic jack? Often even a little 3t will crack shit like that.
If yes, use that. If not, go find a man.

Also, get a bigger hammer.

[unstuck]

Hope thats not a rental property.

[Bikemad]

can you turn/rotate the bolt?...........if not put a bar and socket on the bolt head,apply some pressure and tap the other end of the bolt or the swingarm where the bolt passes through

[Badcat]

Might be easier than you think. First ascertain where the Bolt is stuck; Does the Swingarm Move? If you undo the rest of the Motor Mounts does the Motor move? What I'm getting at here is trying to isolate which part of the Frame/Engine/Swingarm the Shaft is stuck to. Keep in mind that, even if the Swingarm moves, the Outer Bearings/Bushes may be seized to the Bolt/Shaft.
Heat is a very good idea, but clean up any inflammables first, like Chain Oil etc
What can work is to gentle heat the offending area and then spray CRC into the joint whilst it is still warm. What happens here is that, the Heat expands the Air held between the Parts and spraying of CRC cools the Parts and sucks the CRC deeper into the seized joint. You may need to do this a few times.

Good Luck.

the swingarm moves.
the bolt end rotates.
it's not caught in the eccentric for the jackshaft chain tension.
my guess (and opinion on ADVrider BW thread) is the pivot shaft has adhered to the sleeve inside the rear engine mount.
i'm not heating it, or using a sledgehammer, I'm not a muppet.
as per my question - does anyone know an engineer that may be able to help?

ken

[Badcat]

Hope thats not a rental property.

what are you - my property manager?

[schrodingers cat]

Yes the coolest thing about a really big fuck off hammer is that it will turn the most stubborn bolt into a rivet...

Personally I'd be heating both ends of the bolt red hot and letting it cool to thermally shock things.

After that just accept that you're going to need a new bolt and new bush and use drills and hacksaws to get things apart.
Sometimes drastic measures get to the point of being able to move forward much sooner,

[Imagineering]

i'm not heating it, or using a sledgehammer, I'm not a muppet.
as per my question - does anyone know an engineer that may be able to help?
ken

This Muppet happens to be an Engineer ...

[Badcat]

This Muppet happens to be an Engineer ...

Sorry. I mean no offence.
I mean my backyard and meagre toolkit aren't really the place to fix this.
I don't have the workshop or the tools to do it properly, that's what the muppet reference was.
The bikes are rare, so if I bugger the frame, I'm screwed.
Hence asking for a professional with skill and tools to help.

Ken

[Kickaha]

the swingarm moves.
the bolt end rotates.
it's not caught in the eccentric for the jackshaft chain tension.
my guess (and opinion on ADVrider BW thread) is the pivot shaft has adhered to the sleeve inside the rear engine mount.

If the swingarm moves and the bolt end rotates with it then I doubt it has adhered to the rear engine mount, more likely siezed in the swingarm bushes/bearings