Ok so this isn't going on a motorcycle.

 I am using a throttle assembly from a bike and hooking it to a chainsaw.  The issue is that the cable ends do not match obviously so I am thinking the best bet is hooking the two together.

 The cable coming out of the chainsaw needs to be spliced/clamped whatever to the cable coming off the bike throttle.  The cable travels about 1/2 inch.

 Any ideas?

 I was hoping there was some sort of crimp method.  

 I have the original cables but they aren't connected.  Are you suggesting I just strip out the current cables and try to make a custom length?

 Ok I will check it out.  I don't know how the chainsaw cable connects to its internal component, hopefully its an easy attachment.

 Its a cable for sure.  I have the trigger/safety mechanism removed and the cable end is sticking out, its just not long enough.  

 If I can get to the internal connection without breaking anything and see how it connects then I'm good.  if not I have to hook the two together just outside of the chainsaw housing.

 So the cable coming out of the chainsaw needs to be reinforced. At the end of the insulating cover there is a plastic block that keeps that insulated section from pulling out of the housing.  

 I will most likely need to keep that section of chainsaw handle that holds it in place and connect the cables together after, or fabricate a custom cable if I can.  I really wanted to remove all of the original handle trigger assembly.

Get the end of the sheath out of the cup in the handle.
Get the gray cap off the extension.
Chop the BB off? Maybe, it could be a friend.. depends..
A piece of copper, I like the connectors, they are stiff. Tubing slipped into the ends, with a slot for fitting.
The end you're adding to, clean up the curved tube and solder.
The old end, clean, fit, epoxy and crimp.
Connecting the cables can be as simple as cleaning and soldering or a splice and solder.
How long you need it to last is the determining factor.
Build a mount block and secure in the handle. The curved end is something to work with.
A single strand of copper wire wrapped around the cables, fluxed, and soldered, will make a good connection.
After the parts are scrounged, about three hours.

 I've never soldered before, if I have time to go buy a kit and learn how that might be the way to go.

 If I can get a knarp to fit in there it might work.  I'm surprised there's no sleeve out there that could be crimped.

 Why wont connecting the cables work?  

 They would sit within the handle of the chainsaw.