Originally Posted by
Bonzo Banana
I think they are both roller brake versions as that appears to be the version also fitted when V brakes are used. The R at the end of the model number indicates roller brake compatible. The 3001 has a aluminium shell where as the 3000 appears to be steel (I think) but I don't think there is any other mechanical advantages to 3001. There used to be a more problematic version early in the 7 speed history and I think when SRAM stopped making hubs there was a big increase in production at the Czech factory of 7 speeds which peaked demand and some of those are meant to be inferior for a short time but those were European assembled models and didn't effect the fully Japanese made models.
To be honest though I'd still have preferred to have the 3001 model given a choice just because its a later version but happy with the 3000 model. What I'm most jealous of is the 10kg extra rider weight capacity but I'm not sure why there is the difference looking at them.
Frame welds on mine are excellent and everything seems great regarding frame construction. I'm fairly sure its a fuji-ta frame which you can't really get better at the budget end although always difficult to tell as Chinese factories copy one another so much. Universal cycles have a history of using them for their mid to higher end bikes as do many other importers in the UK.
Both are aluminium (I just tested my 3000). Interesting about the 100g saving. I wonder where it is! There is a horrible mild steel plate behind the sprocket which could be made into aluminium or plastic. Probably weighs 100g.
The extra 10kg loading limit is also odd. Maybe the 3001 hub has a higher loading.
Below is the seat-post, it's so cheap and so good! Literally half the weight of the original when you account for the brick of a seat clamp the original uses.
https://www.aliexpress.com/item/Fold...792962171.html
One thing to note though, the foldy uses a 34.9mm seat post. Those posts are available in carbon but sparsely. I bought a cheap 1mm post shim to match it.
If you want to splash further cash...
New Rims (the original are single wall but are strong and light, nothing wrong with them)
https://www.aliexpress.com/item/MEIJ...618322220.html
Nexus 8 - great price!
https://www.sjscycles.co.uk/hubs-int...black-32-hole/
Change the crank first though, they're awful.
Done:
Double wall rims
SON Delux
Stainless spokes
Drop handlebars
Nexus 8, Jteck bar end shifter
Deore XT BB + crank
Deore XT Parallel-push brakes
Replacement mudguards (I'd cracked one)
Drop handlebars, Tekro levers, 110mm stem (chop the original off)
Brooks B17 Saddle
Lite-pro 33.4mm seat post + shim
Schwalbe tyres, road and BMX type
Stem cap (I 3d printed one to fit)
Replaced headset bearings (supplied damaged)
Shimano clipless pedals
Todo:
Headset replacement with aluminium quill.
http://porkchopbmx.com/alloy-bicycle...low-potts-mod/
Mods:
Drill a small relief hole in the steerer folding part (it collects water and rusts the bolt).