I'd suggest trying some U.V Activated adhesives. You user very little, you can build it up, but on initial use, the "Glue" is applied to the piece, enough so you touch the mating piece. You hold them together and hit them with the U.V Light on the other end f the tube (it comes with the light) The Bond is absolutely instantaneous. If you decide you wish a little more, you add as needed. When it hardens, it does such that the ends when painted look welded together. You can make small head lights using this stuff as it dries clear as glass (put an LED behind there and you have a headlight).
I do not use any kind of Cyanoacrylate glues sand recommend to our members not to use them, or use as minimally as possible. They cyanide in those products builds up in your system and your body cannot get rid of it. It causes cancer and other very strange things to happen. Your finger tips can start to crack open and not heal for a very long time. The Gel Crazy Glue, used with a liquid activator is insanely strong. 35 years ago, working on my 1973, I was trying to pull the pulley off of the alternator, when the edge had a piece break off, my money being a brute. It was cast Iron. I put some Gel Crazy glue on the pulley and the piece, put them together and poured activator on it. I built it up just a little built. I figured it would hold long enough till a new one came in. Well, 35 years later, 8,800 miles on it, and it is still holding strong.
Just out of curiosity, do you actually ride motorcycles? I have 3 and have built many. It's just a curiosity. You can learn a lot be researching frame designs and standardize engine mounting points. Select your favorite motor, and build a copy of it.
The rear backbone of your bike would look good as a a model, but would not work in reality. You can fix this now by adding some gusseting to the frame to triangulate the mounting points. The same would have to be done with other area s of the backbone to make it look real, make the model really much stronger, and give you surface area to customize.
Just some suggestions from an old biker, who still rides. It's a matter of how far you want to take your personal best. I don't bother making suggestions like this for people who are just making run of the mill models. I only do so to talented, original idea designers who have a sh*t load of potential. I could show you how to make those wheels look like rubber with thread too.
You could do your whole model with this one glue. Just some suggestions, no criticizing meant or intended.
