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Yep. Totally agree regarding brakes and stuff. I was surprised how well they stopped, but it was a dry day with incredibly slow speed.
Do you mean like the pedal controlled gear shifting hubs? After our maiden voyage yesterday, I think the current 3 speed hub is totally serviceable. Stoker didn’t notice the chain at all. Key problem was that we spent all the time on the lowest gear even on the flat, and never got enough speed to need the other two.
With that in mind I had the thought that maybe replacing the freewheel with something larger (or chainring smaller) so the gearing is lower, and we can make use of the range - it would certainly aid getting uphill at the zero mph we appear to be using this at.
Once or twice I forced us to go faster and it wasn’t too skittish. Definitely reminded me of the dodgy danger cargo bike; don’t look at the wheel, look straight ahead, drop the arms and relax, no death grip. That dampened out a lot of the minor wobbles and meant I had the strength left to rebalance every shift of the stoker’s weight whenever she fidgeted.
Didn’t actually ride with carrier bag on the bars. Sod that.
Cool bike
I'd avoid putting any kind of pedal controlled anything on a tandem, wouldn't want that power in the stokers feet.
I'd definitely make replacing the brakes a priority, maybe even try to find some sort of cheap third/drag brake option.
It kinda reminds me of a KHS Sausage I built up recently.
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