I have a mid 70’s dustrunner/Honda 250 3 wheeler by shinsei. I would love to get it working again. Probably cost more than it’s worth to repair but it’s for sentimental reasons. Anyone know where I might send it to.It says I can’t upload a photo because i don’t have 10 posts yet. I don’t know what’s wrong with it. In great shape, it just stopped working about a month after I got it for Christmas and I put it back in its box and it’s been in my attic for the last 40 plus years.

never heard of this RC so I was curious and found a box opening video here:

no idea who might do a repair for you professionally, but it might be possible to rebuild it with modern hobby grade electronics by installing a micro ESC/RX unit and replacing the steering servo... if you need help doing the conversion, I might be able to work with you on it, I'll shoot a PM for more details.