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Can you elaborate on the “drop in quality” of the velosolo cogs? I have an older one that is really nice.
dadbike-
Yeah, I have an ancient shiny cog that’s still going strong but I’ve bought a couple more recently that have had a matte finish that has crackled up and flaked off.
Image below is of a 19t I bought for myself and put a couple hundred miles max on. I emailed them about it and they gave me a partial refund and said that they had had issues with their plater, made it sound like only a small batch would be affected. That was Dec 2020.
I then built a wheel for a customer about 4 months ago and bought a cog to go with it (think it was a 15t or 16t). After maybe 2 months they asked me to rebuild the wheel with a coaster hub and when they sent the wheel back I noticed the cog was the same. It was on a minivelo so doubt it’d seen a very high mileage.
When I contacted them Velosolo did say that it was just cosmetic and the steel underneath wouldn’t be any weaker or anything but I think the bits where the finish has flaked off have corroded quicker and having a cog dump these metal flakes into your chain is far from ideal.
M_V
I feel like that needs an explanation in order to get a sensible/useful recommendation.
How did you strip the threads? You say hubs, does this mean you've stripped multiple hubs?
Immediate suggestion would be a converted XT hub and Velosolo style bolt on cogs (though given the severe drop in quality I've seen in the Velosolo cogs I may think twice about recommending that system to anyone now) but there's a lot of people giving Novatecs a pretty hard time and I haven't heard of too many of them stripping.
I've certainly seen track riders that are changing gears multiple times per session mess the threads up but they seem pretty bombproof for normal road use.