I built some 27.5"+ boost wheels for my hardtail Enduro and put my stock wheels (heavy, Marin branded) on the GFs bike. I'd like to build some budget minded skinny, light wheels for road riding up and down mountain roads with a club that uses a mix of road/mtb bikes. They frequently do 55-70km on runs out and i'm currently walking up most of the hills. Obviously I'll be getting new tyres too.
Is there somewhere online where someone has been collating rim weights in one easy to find place, to avoid hours of work checking what's available first, and then running them down?
Right now I'm looking at Duroc 30 (32h) rims @ 465g, and currently using Duroc SD42 @ 610g. I can build a set of boost wheels with the 30s weighing 1850g for £138 inc rotors. Not the 1500g of a carbon wheelset, but I'm currently overweight for them re: durability.
I had Mavic xm319 on my last 29" wheeled commuter/exercise bike but @ 532g in 27.5" they're obviously too heavy, the few alu rims I've already looked at are heavier than the Duroc 30 (which is listed as an XC Tyre, but might struggle to fit a 2.0" Tyre)
Xm401 at 430g. 22.5 internal. Went out of fashion for a bit but now back in for gravel bikes I'd think.
I've a set of new 28h rims that I tore off an new wheelset to bring it upto a 30mm inner. Couldn't sell the 22.5s for peanuts but now I'm holding them for a gravel build.
That rim isn't available where I am. I had a real good look.
Found a set of affordable DT Swiss X1900 wheels to spec. Not the lightest admittedly. But on the main website it states 25mm inner, and the seller has a photo using a digital tool showing 20mm.........
DT have carried number naming over for a while. There was a 22.5 and 25 option in the last gen x1900. Perhaps there was one before this, or even an OEM build wheelset that carried the number but different decals and a different build spec.
Right. I'm in China and we do have some old stock across ranges, so that must be what happened here. Many sellers neglect to inform buyers that it's superceded stock. I don't really want a rim that narrow so will keep looking.
Surprisingly, given the year, we do have a flood of 19/20mm inner rim measurement wheelsets here. Might have to go with the Duroc30 in the end. I even got a fake XM319 rim the other day (my commuter bike needed a replacement wheel) that the seller had actually made up a fake sticker for, extended with their shop name on!! All sorts of nonsense you don't see in the UK.
Stans Arch MK3 are 430g - 27mm inner width.
Newmen
Arch MK3? A "cracking" suggestion.🤣
No Newmen here.
One seller with Stan's rims:
Crest 28h/32h 365g 21mm ERD:565mm tape:25mm
Arch Ex 32h 420g 21mm ERD:566mm
Medalist 32h (can't find weight) 21.3mm
All options are £50/rim.
Crest won't take my current weight. I have a feeling the Medalist won't either. I am going down, doc's orders, but not fast enough. Arch Ex will take my weight easy.
The Duroc 30 has an ERD:568mm (incidentally, they cost £22.25/rim here) I know the length of spokes I need to fit Durocs to the hubs I'm using (Drive side 273mm Non-drive side 275mm) because the ERD is the same with my last build.
If the new wheels need shorter spokes, do you just take 1:1 the mm off each spoke when ordering?
Ultimately, I'd only be saving 45g/rim, paying over double, then having a 21mm inner instead of 27mm limiting Tyre choices. When I drop my weight I'll reconsider those Crest rims. For now I feel, logically, it just makes sense to get the Duroc 30s and rebuild the wheelset later. Thanks.
Slightly lighter rims will not make the difference between walking climbs and riding them, sorry.
Try new tyres alone first, and training.
Unfortunately my rims are too big to try putting the tyres on that i need for these rides. 37mm inner rim with 2.0" tyres? They'll be square and have no edge grip. I'm having to change wheels and tyres at the same time.
Update:
If you stare long enough at shopping websites, something usually appears.
Arc MT009 boost (microspline) with sun ringle Helix TR25 SL rims (414g rim weight, narrow enough for skinny tyres)
Innova Pro - X Bobcat 27.5*1.95" (316g each plus the tube's weight. Same hubs on both wheels and saved 700g on the rear wheel alone!)
Wheels £105/set, tyres £15 each. £18 for fresh rotors. Ran through a fair amount of patience squeezing the tyres on the rims. Roadside puncture repairs are going to be accompanied by screams of frustration!