Thank you all for sharing some great ideas.
I live in Germany, so the rainy winter weather and not being allowed to carry a passenger other than small children, I decided to permanently attach some sort of container(s) to my RW. As I was researching different options, I came across this truck (lorry) tool box for 73 Euros each (https://www.amazon.de/dp/B01MTBJOBM/ref=pe_27091401_487024491_TE_item) that has lockable lid, seals from dust and water (if mounted "properly" - horizontally). There a many different sizes available, I got two of the 750 x 350 x 450 mm or 65 Litres sized boxes originally planning to attach them side by side like panniers.
I was pleasantly surprised by the quality of these boxes. They are made in Italy, no funny smell, the plastic feels strong and supposed to be able to withstand -40 - 60 C temperature range. The weight is about 3 kg. It is rated to carry 45 kg. When I flipped over my bike, I did put bike on it, no problem there.
I realized having two containers on sides would make the bike too wide, so I ended up attaching one box on the cargo rack using six bolts. I am keeping my raincover, a bike cover, tools, bungies, straps, a lock (when not it use) permanently in the "trunk." I loaded it full of groceries the other day, probably about 30 kg cargo; although, the box transported it no problem, the bike was a bit top heavy. To carry my normal day to day cargo (laptop etc.) about 10 kg, the bike doesn't feel top heavy at all. (I should not that I did change both of my tires to much heavier Pirelli City Demon https://www.amazon.de/dp/B00B9C3TV0/ref=pe_27091401_487027711_TE_SCE_3p_dp_1 tires and installed Tannus armour.)
The box doesn't block the access to the top rails of the rack. I haven't tried, but I should be able to hook some sort of panniers or big bags on the sides as needed.
I live in Germany, so the rainy winter weather and not being allowed to carry a passenger other than small children, I decided to permanently attach some sort of container(s) to my RW. As I was researching different options, I came across this truck (lorry) tool box for 73 Euros each (https://www.amazon.de/dp/B01MTBJOBM/ref=pe_27091401_487024491_TE_item) that has lockable lid, seals from dust and water (if mounted "properly" - horizontally). There a many different sizes available, I got two of the 750 x 350 x 450 mm or 65 Litres sized boxes originally planning to attach them side by side like panniers.
I was pleasantly surprised by the quality of these boxes. They are made in Italy, no funny smell, the plastic feels strong and supposed to be able to withstand -40 - 60 C temperature range. The weight is about 3 kg. It is rated to carry 45 kg. When I flipped over my bike, I did put bike on it, no problem there.
I realized having two containers on sides would make the bike too wide, so I ended up attaching one box on the cargo rack using six bolts. I am keeping my raincover, a bike cover, tools, bungies, straps, a lock (when not it use) permanently in the "trunk." I loaded it full of groceries the other day, probably about 30 kg cargo; although, the box transported it no problem, the bike was a bit top heavy. To carry my normal day to day cargo (laptop etc.) about 10 kg, the bike doesn't feel top heavy at all. (I should not that I did change both of my tires to much heavier Pirelli City Demon https://www.amazon.de/dp/B00B9C3TV0/ref=pe_27091401_487027711_TE_SCE_3p_dp_1 tires and installed Tannus armour.)
The box doesn't block the access to the top rails of the rack. I haven't tried, but I should be able to hook some sort of panniers or big bags on the sides as needed.
