Sewage Level Engineering - Hambini BB review by an actual engineer.

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[ruffrydazz]

Congrats to Hambini for making the world's most tightly toleranced fleshlight. I'm sure his mother is proud.

[davidsonmarisia]

It’s interesting how we are so "accommodating" with tolerances and quality in general when comes to a €/$10K bicycle, yet we demand much stricter tolerances on equivalent priced vehicles like motorbikes, or indeed anything else... it’s time so called "premium" bicycle manufactures get their quality up to same level as their marketing and sales. Kudos to @Hambini for keeping it real…

[bakerniner]

Material: Sent a sample to contacts at an undisclosed US government location in a desert and they confirmed that it is not a standard ASTM aluminium alloy. It seems to be a bespoke alloy found in certain turbine engine structures. Aerospace industry refers to it as "Hambinium."

[galenkehler]

They say you can judge a man by the roundness of his hole

[Mrodriguez]

I didn’t think 5 year olds were capable of such engineering marvel. Well done! ^_^

[daveblum]

The Hambini BB solved my BB issues. No more creaking or binding. Significantly extended lifespan compared to the individual cup BBs I had used. Great customer service. None of the previous BB's lasted for more than four months. I'd gladly buy another Hambini BB for my other bikes.

[theillegalimmigrant]

I must commend Peak Torque for this type of review. We are usually bamboozled by buzz words from the bike industry but this is quite raw, hard facts presented. Really good, I thoroughly enjoyed it.

[torontogonzo]

I like engineers checking engineers. So tired of the marketing hyperbole.

[PeakTorque]

Edit: maybe the video was too short for some of your Hambinites. Some more detail - This BB is by no means a feat of engineering, it's just a tube with 4 toleranced and concentric diameters. However, it is very well made. It will be orders of magnitude better than a carbon BB shell in terms of diameter control and concentricity. Concentricity is the key to bearing life, low drag, and being kind to the spindle. Such as the standards we're subjected to in this sport, we appear to be crowing over something normal and just well made.
Do i need one? No. Fortunately my bikes' BB shells are well controlled and I've never had any problems with the plastic 2 piece stock options (either Shimano or gxp). One is still original from 2017! If you 'need' this BB to correct a bad frame, consider your frame choice or warranty options.

Negatives. Not many but if your frame is *really* bad and is too tight on it's shell, pushing this in is quite intrusive. You need to be aware of the hoop stress you're imparting on the frame's fibres. You don't want it to ream it's way in.

Disclosure: Mr Hambini did not know i was making this video. Joe (China Cycling) sent me it for some basic QC.

[nickmannerings]

I have a Hambini BB in my Cervelo R5 2016. I had to have a custom one as Cervelo take a rather cavalier approach to standards. Hambini got me to measure my frame and the BB went in perfectly. It’s spins like silk even after quite a few thousand miles ( certainly more than 7, 000) it’s brilliant and I think it’s worth the money.

[MegaRobboz]

When a british person says "really really good" or "pretty damn good" that is the equivalent of any other person saying it's best in class or the best you can find etc.

[toddtonis]

Bravo to Peak Torque for showing us the Geometric Tolerances (GD&T properly as well as his inspection setup for measuring those features (total runout). As a manufacturing/ machining person i appreciated that. Well done!

[lzus]

I would say you have it backwards on the machining side of things. Judging by the distribution of high and low spots on the side with the flange, considering you have more than one per revolution, this is the side that has been fixed in the lathe. The fixture that has been used caused a slight deformation while the part is turned.
Deflection on the free end of a part usually causes a taper...
This is just an armchair observation of course.
Love what hambini is doing, even though he might be harsh at times.

[markrobinson]

It's better if we saw a Chris King or other high end BB to compare with the Hambini, nice opinion and review 👍

[onilovni]

Can't wait to put this perfect BB in my Potato carbon frame.

[industryrule-]

I had Dura Ace, then Wheels Mfg, and now a Hambini BB in my Canyon bike. The Hambini was absolutely noticeable in making my frame a bit stiffer when pedaling at higher power. My bike also doesn't creak anymore.

[galenkehler]

You and Joe realize hambini is going to be even more insufferable now (if that were possible)

[planetmongocommoditiesexch]

Henceforth please show your calculations on ruling paper with a Princess Blanket watermark, thank you.

[antoinegrenier]

9:05 I remember in one of his video (about open cycle triying to sue him), that Hambini said 0.05mm was what he would expect from bicycle manufacturers in term of concentricity tolerance

[robertolsen]

It's kind of expensive but if its only made one by one at different specs it will cost alot. As a machinist I can say the problems comes when you do the backside, the first operation is machine the outside an inner diameters. After that it must be flipped to do the last bearing surface after straighting it up with a indicator. And also soft backs is needed not to get marks.