Sugino 75 - external or square taper BB?
 

I got some cash and am considering an upgrade to my Sram S300 crankset with GXP BB. I'm currently looking at the Sugino 75 series, but am at a loss as to which BB type I should go with: Sugino 75 Superlap square taper bb, or the external one that comes with the Sugino 75DD set?

Halp appreciated guys :)

75DD's are significantly more expensive than traditional 75's which can be picked up cheap if your timing is right and you know where to look.

For what it's worth, you're going to have to import the 75DD's from Dolan in the UK and risk the chance of having to pay customs fees as the major US importer of sugino cranks had an impasse with sugino in regards to the DD's and don't plan on carrying them at the time being.

Also, normal square taper 75's are already overkill for the average rider. External BB, on paper, is the cherry on top.

Where I'm getting them from, they're about the same. If price wasn't an issue, which would you go for?

Regular square taper 75s. All this external B.S. and random splines is stupid all you need is a good ole' reliable square taper.

Wish they came bb30.

This.

Not this.

Alright thanks so much for the help guys, I'm going Sugizen chainring, Sugino 75 crankarms and deciding between the normal Sugino 75 BB, Hatta Swan R9400 and the Sugino 75 BB Superlap.

Should I go with the Superlap BB/consider the Hatta R9400? Or are they just overkill, and the normal Sugino 75 BB is good enough?

Also should I change my pedals? I don't exactly have much problems with my current pair (Wellgos with BLB Plastic cages) but I'm wondering if changing to MKS Sylvan Tracks will make it smoother spinning. Or is it another case of overkill?

Thanks a lot guys.

If you will be riding mostly on the road, why not get a good quality sealed cartridge BB such as this:

Tange-Seiki 109mm ISO sealed-cartridge bottom bracket | Retrogression

From what I heard loose balls are smoother and are quite good when maintained as well. I trust my LBS (Cycle Project Store) with my Transfer, and my schedule is to go for a routine servicing once every 6 months; they do BB servicing as part of the package.

The problem is that the stock Sugino 75 BB is not sealed, since its intended use is on the velodrome, which is clean and dry. Yes, the loose ball BB is a bit smoother when properly adjusted, but it is hardly noticeable in normal use on the road. If you only ride in dry weather, and there is not a lot of dirt and sand on your roads, then it probably won't matter, but for non-competitive use I prefer the convenience of maintenance free bearings.

Yeah its probably not much of an issue in that case, I ride on roads/pavements and rarely do I go on dirt or sand. I'll take your suggestion under advisement though.

Which ones should I get then? Sugino 75 BB, Sugino 75 Superlap or Hatta Swan R9400? And does upgrading pedals really matter if I'm sticking to toecages?

Why wouldn't you just ask them these questions then? They're a very competent shop and will be able to provide the answers you want.

Tell Sherwin I say hello.

Haha because I bombarded him with lots of questions alr XD. I mainly wanted to know about the diff between the hatta and suginos and thought I could source for my answers online instead.

I'll tell him you said hi!

who knew 75s even had an external bb option

It seems to be a recent addition to the Sugino 75 lineup, presumably to keep it competitive with other brands. Personally, I'm 100% fine with the old square taper stuff, but then people like me don't represent a large market anymore.

external
 

im people like you, what does an external bb do better than a spindle? 200g less?

You and I are outliers, just two data points at the tail of the norm. Look at all the people wanting ugly Omnomnoms and S300 cranks, because they are sooooo stiff and soooo modern. If you are really powerful, you can probably tell the difference, but for the rest of us the only advantage is that the cranks are easier to install and remove.

I had the S300 cranks because they were relatively cheap. Also, Gxp is super easy to install.

I actually got s300 first because it came with a bb. Are S300s considered stiff?

I come from a mountain biking background. Larger diameter spindles than square taper allowed for stronger crank arms and bottom brackets, which take mich more abuse in offroad scenarios than on the road. Larger diameter spindles led to smaller bearings (in the standard 68mm shell). The smaller bearings were terrible and did not last long. The next evolutionary step was external bearings: larger bearings than could fit i side a 68mm shell. Now we are looking at new bb shell sizes.

Does this make a notecable difference for most road bike builds? No. It is/was a huge step in the mountain bike world (imo).

Omnium are only 200 ish bucks new and come with a bb compared to 75s which are closer to 300ish after chainring and you then need to get a bb. I really can't tell the difference in 75s vs omnoms outside of one is silver and the other is black.

External bb 75s are stupid and should go away.

they both come in silver and black tho.

op. if you insist on sticking with loose ball, I'd go Hatta. cause mirror polish, only a little more expensive than normal sg75, and a little less than super lap sg75. + most dope.

but realistically, unless it's a show-bike or a dedicated track bike, I'd recommend the Sugino Prototype BB. It's a sealed cartridge bb designed for the 75's, and it's like $35. Sealed cartridge = less maintenance; less maintenance = longer crank life, because you aren't removing/installing the cranks every six months to clean and repack the bearings, so you aren't blowing out the taper on the cranks.

Just go with a sealed, square taper BB if you're riding on the road. You'll never notice the difference in smoothness (most people can only tell when thye are holding the BB in their hand and turning the spindle with their fingers). Less hassle, less worry, and no loss in performance. You say you plan on servicing your BB every six months. What happens when you get some grit in there three months away from that service? You just chewed up a nice BB.

Yeah I know, it was just a matter of saying the difference is superficial.

I have the sealed bb that tejano linked earlier, no complaints on my end but I ride it in the rain and am real lazy on maintenance.