Tourist in MSN

I would never recommend a sidewall generator for any purpose. I had one on my utility bike for a while.

There are some newer ones that instead of using the sidewall of a tire have a roller on the rim, they are called rim dynamos. Some owners like them. I have no such experience so I can't comment. I think the Velological was the first one that gained any foothold in that mkt. Those came out when rim brakes and machined rim braking surfaces were the norm, not sure how they work on rims that were designed for disc brakes, that would be something to research if the roller would wear the paint off the rim.

If you wanted to have a dynamo system and did not want to get a dynohub, I would check out a rim dynamo before considering a sidewall one.

I have several dynohubs and dyno powered lighting systems on some of my bikes. They are great.

But in this era with powerful low energy LED lights and high capacity powerbanks, a battery system could be a good option too if the purpose is for events of no more than four days and four dark nights.

There are too many good options out there to consider using one that rubs on the tire sidewall.