SG75 or SG75DD

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  • Hey there, I am in a bit of a conondrum. I just ruled out the Rotor 3D24 Track chainset because it was coming out wait too expensive in comparison to the Sugino but now the question is, having £5 difference and being the direct drive version the cheaper one, which one do I get? I'm not fully sure about the actual benefit of the DD setup.

    What's your opinion?

  • Go with the dd

  • What are the benefits of it?

  • To be honest I dont know whats the different between these two as i used them but I prepared dd's

  • Where and how is it going to be used?

  • Not on a track... regular commuting plus training.

  • Bigger bearings further apart.

  • @dancing james ok so a better product hands down. Would you also recommend investing in the ceramic version of the BB?

  • Ceramic bearings are of dubious benefit.

  • Good to know, that will surely save me some money both on the BB and the hubs then

  • definitely DD for commuting

  • I'm running both on different bikes, The DD have been fine since I ignored the torque wrench settling and just tightened them up as much as I could. They came lose a few times which more a bit disconcerting. The standard BB doesn't have a great rep in terms of life expectancy but I've got just over 1000 miles on mine without an issues, but all dry miles.

    My standard Sugino 75 are great, just fit and forget, I'm running them with a campagnolo BB.

    I'd go with whichever pleases you most aesthetically.

  • @swedeee could you elaborate a bit further on the why?

    @HousecatHST yeah, that's the concern that I have/had too about the DD version, it doesn't seem like they engineered the arm clamping system too well, actually, they just did the opposite; although in their defence, I don't think the clamping could be achieved in any other way mechanically.

    About the look, well, they are almost look a like, the real difference is that I can get the full DD set, crank + chainring + bb for £300 vs £375 for the standard one in the cheapest configuration possible.

  • I'm not sure why you'd consider square taper over external. There's a reason there aren't many new square taper cranks from the big brands, just continuation of old models. Wider axle is stiffer and lighter, larger bearings are more efficient. Also external bb cranks just look better. And its cheaper. No brainer.

  • I'm not sure why you'd consider square taper over external.

    Because 75DD look whack

  • They're literally the same as 75 but without a fat bolt in the middle. Hands down 75DD look better than 75 in my opinion

  • Using a term popularised by Kriss Kross loses any argument especially relating to aesthetics

  • DD narrower Q factor.
    Rotors feel slightly stiffer (?subjective).
    Stock bearings of both cranks are crap in my experience. CK Threadfit BB for the DD's is best call. No need for ceramic.
    My left crank creaks on my DD's and can't figure it out for love nor money but bar that they're my favourite cranks and have them on all my dailys.

  • because square taper will have a higher chance of failure over time. the fact that the DD interface has a greater surface area distributes force better than the square taper, making it less likely to warp/wear.

    there are avid sugino square taper fans on the forum and they will no doubt disagree with me (as they do), but it really is just quite simple science. there is a reason mountain bikes (and road bikes) ditched square taper many many years ago

  • The NDS is a unacceptable in my opinion


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  • Bolt covers it.

  • @PhilDAS

    I'm not sure why you'd consider square taper over external. There's a reason there aren't many new square taper cranks from the big brands, just continuation of old models. Wider axle is stiffer and lighter, larger bearings are more efficient. Also external bb cranks just look better. And its cheaper. No brainer.

    I'm not, I'm simply trying to learn, I never got deep into bicycle details before, I only jumped on it and started pedalling.

    I genuinely wanted that to change, so thanks to everyone for elaborating on the topic. DD will be.

  • Not the clamp on screws. That's the worst part

  • yeah given the price difference I'd go with the DDs, but closely monitor the non drive side for a couple of rides as it's likely to come loses at some point.

    what's it going on ?

  • @danslecarton I really can't think of any other way of doing it though. Also Rotor uses that solution.

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SG75 or SG75DD

Posted by Avatar for debo @debo

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