Disc specific, 700, 20mm external

father_jack
father_jack Posts: 3,509
edited June 2012 in Workshop
Do any 700/29er rims, disc specific, with 20 external rims exist (for 23-28mm tyres) I can find plenty of rim brake 700 20mm rims (road bikes) and disc specific 29er but with wider external for 35-45mm but not thinner tyres.
Say... That's a nice bike..
Trax T700 with Lew Racing Pro VT-1 ;-)

Comments

  • maddog 2
    maddog 2 Posts: 8,114
    Stans 29er Crest will fit a 28mm road tyre but they're very tight so I'm not recommending it, from experience

    You can get a few road rims without a braking surface (Velocity, OP CD) but no manu to my knowledge has grasped the market for 700c disc rims yet, which is a shame.
    Facts are meaningless, you can use facts to prove anything that's remotely true! - Homer
  • ugo.santalucia
    ugo.santalucia Posts: 28,337
    Open pro cd are machined but then anodised, so effectively they look like a non machined rim.
    left the forum March 2023
  • Monty Dog
    Monty Dog Posts: 20,614
    Velocity A23s are available with non-machined sidewalls (Just Riding Along) - my mate runs a pair tubeless on his Dirty Disco with Stan's Rim Strips. I run some Stan's Crest rims tubeless on my bike, but haven't tried them with a narrower tyre yet - we both rode the Southdowns Way on Monday with some of the bumpy descents taken at 60kph plus with rigid forks with absolutely no wheel trouble. TBH given the Crest rim profile, it should be no problem fitting a skinny tyre - just comes down to technique.
    Make mine an Italian, with Campagnolo on the side..
  • father_jack
    father_jack Posts: 3,509
    Looking into Ambrosio Excursion Rims.
    Say... That's a nice bike..
    Trax T700 with Lew Racing Pro VT-1 ;-)
  • ugo.santalucia
    ugo.santalucia Posts: 28,337
    Father Jack wrote:
    Looking into Ambrosio Excursion Rims.

    They are excellent and cheap, but they are machined
    left the forum March 2023
  • father_jack
    father_jack Posts: 3,509
    yeah. But getting silver should look ok. Open Pro CD are another £20 each

    Seem them for £25 (Ambrosio)
    Say... That's a nice bike..
    Trax T700 with Lew Racing Pro VT-1 ;-)
  • ugo.santalucia
    ugo.santalucia Posts: 28,337
    Father Jack wrote:
    yeah. But getting silver should look ok. Open Pro CD are another £20 each

    Seem them for £25 (Ambrosio)

    Get them, they are excellent value for money... You know how to build a set for discs? There are significant differences over road wheels in the spoking and tensions
    left the forum March 2023
  • maddog 2
    maddog 2 Posts: 8,114
    Monty Dog wrote:
    TBH given the Crest rim profile, it should be no problem fitting a skinny tyre - just comes down to technique.

    It's not that. Even when fitted the tyres are tight! You need at least 80psi just to seat the tyre bead :roll: It's not an issue once it's up to pressure but if you had a puncture out on the road (which luckily I haven't yet) then:

    a) it's real fight to get the tyre off the rim - I had to use a steel lever when I swapped tyres recently, and

    b) you'd need to feel confident you had enough pump pressure to re-seat the tyre properly it once the new tube was in.

    Like I said, I run 28mm Conti GP4Seasons on my 29er Crests but I'm thinking of swapping the rims to something else, for the reasons given above.
    Facts are meaningless, you can use facts to prove anything that's remotely true! - Homer
  • Monty Dog
    Monty Dog Posts: 20,614
    I have had some problems getting some tyres to bed on the Crest rims correctly - a WTB trail tyre had a distinct ripple which you could feel on-road but less so, offroad. Even with a too-tight tyre bead, removal isn't too tricky. I have some 28mm GP4Seasons and will give them a go.
    Make mine an Italian, with Campagnolo on the side..
  • father_jack
    father_jack Posts: 3,509
    order placed for M756 front and rear.

    I'm thinking about getting wide rims, since I already have two bikes with 23-28 tyres and Carrera is for a trailer and need extra rubber for extra braking performance and grip maybe go for Mavic TN317 or TN719. Means ripping off the full length mudguards though, as tight already.
    Say... That's a nice bike..
    Trax T700 with Lew Racing Pro VT-1 ;-)
  • maddog 2
    maddog 2 Posts: 8,114
    Monty Dog wrote:
    I have some 28mm GP4Seasons and will give them a go.

    that's what I run on my Crests too. Watch them ping when the bead seats :shock:
    Facts are meaningless, you can use facts to prove anything that's remotely true! - Homer
  • father_jack
    father_jack Posts: 3,509
    Thinking about getting Mavic TN317. Minimum tyres would be 28, maximum 35.
    Say... That's a nice bike..
    Trax T700 with Lew Racing Pro VT-1 ;-)

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