That's probably a good hint on why their bikes can combine.

This makes me curious as to why the the mach and chaser's technology are actually compatible with each other since the Mach driver seems like it was developed after the drive system was.

Also nice new avatar and signature.

Most likely based on the same basics, that's why Mach can use it.

So if the belt makes these sounds, we might get a Signal Bike that is based on the Rider Chaser and this give's him the ability to combine the bikes or something.

Yeah that's interesting, and I am hoping that this will lead to Mashin Chaser becoming a Kamen Rider.

I don't know about that but he is getting an upgraded form that from the shapes of it looks to be more rider like, but could just be Chaser minus all the junk on him a refined form if you will

I think Chaser will definitely become a Rider, if not in name, at least in spirit.

I really hope he just gets a new form, fights alongside the other Riders, but isn’t becoming a Rider himself, with official name and all. Bonus points if he actually stays rather neutral.

Won't be surprising to see Drive, Mach, and Chaser become one as the final form.

http://fs1.directupload.net/images/150107/m594tdd4.png

Ay Caramba.

Christ that is brilliant, there should probably be another version when they all obtain their final forms.

Also, I could imagine that Shinnosuke and Gou could potentially use each others belt but what if they were to use Chase's transformation device?