Video: 77Designz's Frame Reaches Completion in the Final Episodes of 'We Develop a Bike Frame'

Aug 15, 2020
by Giacomo Großehagenbrock  
(As always we have added subtitles for our international audience)

It's three years ago when Giacomo developed the kinematics for the Kavenz VHP16 during his stay in Vancouver BC. Our YouTube documentation "We Develop a Bike Frame" has 26 episodes by now, and we inspired people all over the world to follow our path and start building their bike frames. If you have followed our journey from the beginning, you know that this was not an easy path, and we sort of kept failing our way to success. What we learned is that it's all comes down to how determined you are about your goals and that failure is nothing but another lesson learned and another improvement to the final product.

Mistakes and fallbacks are as much a part of product development as the glorious moments where you or your test riders end up on a podium on the bike you designed. Nothing beats that feeling.

We are thrilled to announce that with this final article of "We Develop a Bike Frame" the Kavenz VHP16 is finally available for preorder.

We are confident that we go to market with a "ready to shred" product that can make you faster and is reliable enough to be taken out for the big stuff for many years. That's why we will open up for preorders very soon on The frames will be tailor-made and the first batch is scheduled for delivery in January/February 2020 and limited to 50 frames. All the new market-ready frames will receive further improvements to clear them for DH level riding (ASTM Cat. 5) with our partner Test Lab EFBE.

The Head Tube area is finally strong enough to withstand even the toughest riding for many years.

We where all relieved after the Kavenz VHP16 passed the statical destruction test at EFBE.

Kavenz VHP16 Frame Assembly:

As we manufacture our frames in Germany, we do also assemble them in House. Watch Marvin from Marv's Bikeshop doing his job, the high tolerances we apply make the assembling process smooth and easy.

Assembling happens in house with great attention to all details

Marvin from Marv´s Bikeshop is our freelance Bike Mechanic

Enjoy a few of our favorite frames of the BETA BATCH:

How about Raspberry Red Powder Coated

Raw Aluminium will be an option too, this is our longest frame with 540mm Reach.

Sandblasted, chemically polished and Black Anodized makes the finest finish we can think of.

Learn more about the project and sign up for our Newsletter on

If you need more information about the project you can read the previous articles right here on Pinkbike:


Posted In:
Videos 77designz


  • 59 0
 That sandblasted and chemically polished black ano gives off a very attractive satin sheen. Congrats on making it this far. It has been fascinating following along.
  • 38 0
 Pinkbike, please get your hands on one of these. Also, it was great to watch all the transparency during development. Big props to anyone who makes his own bike.
  • 15 3
 "What we learned is that it's all comes down to how determined you are about your goals and that failure is nothing but another lesson learned and another improvement to the final product.
Mistakes and fallbacks are as much a part of product development as the glorious moments where you or your test riders end up on a podium on the bike you designed. Nothing beats that feeling."E

As a product manager I can't stress enough that if this isn't the attitude that you have, you will not be successful. There are so many challenges and setbacks during development of a new product that you (and your team!) need thick skin and the ability to push through in order to succeed.
  • 7 0
 Raaw Madonna vibes with an idler! Right down to the great color choices too.
  • 4 0
 Ive been fortunate enough to ride their prototype @bikeflog on insta. Its very planted and brilliant in the chunk and chunder. Climbs very well for what it is too! Definitely go grab one if you’re interested in something unique, burly and super capable.
  • 4 0
 @professed: you sound like an intelligent well informed person
  • 2 1
 Wow custom frame length options! That's amazing. But I noticed no option for longer chainstays. I get that with varying kinematics and whatnot but as a taller rider who's had enough of too-short rear ends this is a huge miss! A guy who can ride 540mm of reach will likely need more than 425-434. Would you consider engineering a 445mm rear end option for those guys?
  • 2 0
 I like the idea of reaching success via a series of failures. Failure,-failure,-failure,-failure,-etc. =SUCCESS!

I wish all of life worked like that.
  • 10 0
 maybe it's not the failure itself, but what you learn from it and do better next time Wink
  • 4 0
 I'm pretty sure everyone's life is like that. Just gotta be more open to how your measuring your successes...
  • 2 0
 @stiingya: So true! 'Success' has many definitions. The way I look at it, as long a I can be a good father to my kids I can fail hard a good deal in life and still feel good about my efforts in old age. And remember, wisdom is a direct consequence of failure!

Good on the Kavenz guys for pushing through to produce a compelling final product. Hope you sell a good few of them!
  • 3 0
 Want. I really love how many options there are now for non-mainstream bikes.
  • 1 1
 I'm so curious about this bike although realistically it's too much bike for me.

Will it require a lower chain guide due to less chain wrap as a result of the upper chain guide? Do these HP bikes, when designed correctly, really have a lot more drag?

I love my bikes, but when I look at this burly design I imagine it being better suited to an e-bike design where I don't mind the extra weight and pedaling resistance. Would be cool if that upper pulley was the motor drive sprocket.
  • 3 0
 Does NOT look like a Session......
  • 2 0
 The Raaw Madonna and the Forbidden Druid had a baby! Looks great though especially in raw aluminum.
  • 3 1
 First bikes going out January/February of 2020 huh?...
  • 6 7
 As much as I'm sure you ran the numbers on it...that lower shock mount looks PUNY. Don't forget engineers, how the public perceives how it looks/ works can sometimes be as important as how it actually works
  • 7 0
 It figures that someone who has the nickname “The Public” would talk about themselves in the third person.

It looks fine to me. Especially considering a lot of frames I’ve had recently do the same thing with little carbon fiber ears sticking off the frame.
  • 2 1
 I kind of get what you're saying. I'd personally have gone up from what look like M4, maybe M5, to allow more torque and more cover factor on the bolted interface. Given the layout, I reckon that dinky little bracket is almost certainly going to be absolutely fine.
  • 5 0
 @kylar: 1. Not talking about myself in the third person 2. I design consumer products for a living so there are plenty of things that I know are completely fine or are even overkill because of data. But the people who buy the product have different opinions about that because of perception not based on data.
  • 1 0
 I think it looks smart. Not too heavy, comes in 29” and mullet variety. Plus that massive single piece rocker means there’s not much side loading on the shock.
  • 1 8
flag bikeflog (Aug 16, 2020 at 2:10) (Below Threshold)
 @NorCalNomad: you may have a "Puny" penis also, but I'm sure you could also get someone pregnant. Function over Fashion, why make something heavier so other like the look of it better? Everyone is welcome to their opinion though.
  • 1 0
 Well the video series did show issues in lifetime testing with the frame cracking in various places. And it was very well shown that there was more or less no FEA done on the frime, mostly a case of trial and error, even when fixing the cracks. It will be seen how that mount will function, as suspension cycling is not part of the EFBE tests, so the mount wasn't stressed that much in the course of testing. One benefit of it being designed like that would be the possibility to adjust the leverage ratio...
  • 1 0
 Agreed. Like the 2016-2019 Specialized Demo. Probably works just fine, but I think the asymmetrical rear end made it less desirable to some people.
  • 3 3
 @Cashman39: awwwh your attacks on the size of my dick hurt so much. You must be a big strong man that has a huge hog and nothing to compensate for. No idea what you do, but it must not involve something were you regularly get critical feedback on what you actually created. Moon
  • 2 0
 @NorCalNomad: I get what you’re saying but this is more a cultural bias. Why are American trucks getting more and more monstrous and intimidating when they don’t need to be? Personally I think they are stupid but they Certainly attract a certain type of buyer. You don’t get the same sort of bigger is better mentality in Europe or Asia.

Bikes that appeal to me are the ones that prioritize efficiency and simplicity.
  • 1 0
 @NorCalNomad: Sorry, I was poking some light fun at you for assuming your perceptions were held by the group as a whole.

I do get what you're saying. If you want to sell a lot of widgets, you don't rock the boat or, try to challenge as few perceptions as possible. I do personally appreciate the boutique approach of "this works, take it or leave it." Its how things slowly evolve.
  • 2 0
 @NorCalNomad: I didn't day you do have a puny penis I said you "may" have a puny penis but, but the message I was trying to relay with a bit of humour was that you don't need to make things oversized just to make them strong. Take Sydney's Harbour Bridge for instance, the Pillars on either side do nothing for support, they're just there so the public feel the bridge has strength. I apologise is my comment was to close to home. ???? I'm 100% sure you won't be buying a Kavenz anyway.
  • 2 0
 @kylar: things evolve by making them better. Putting something up for sale doesn't mean it's better or that it works. It means it was put up for sale. The use of the product or testing is what shows if it works. The jury is still out for this one though...
  • 3 1
 27.5 version would have my interest
  • 1 0
 It was nice to follow the development process until it all came together. Nicely done.
  • 1 0
 You’ve emerged victorious from what was an arduous and exhaustive process! Well done guys! Wunderbar!
  • 1 3
 Very interested. Gna have to be competitive to enduro frame pricing at $2500usd tho. Custom/boutique is worth extra, but with boutique comes warranty/service risks.
Pricing looks like s works/evil pricing which ia def premium
  • 2 1
 I would like to see the shock mount connect to the down tube not just the seat stay....
  • 1 0
 That was the design on the early versions but testing showed it wasn’t necessary. The current mounts come in different sizes for 29 or mullet set up.
  • 1 0
 @Purpledragonslayer: I'm sure it's structurally sound, maybe just for astetics...
Can still be adjustable....
  • 2 0
 @englertracing: It was not patent-proof
  • 1 0
 @makkelijk: can you clarify
  • 1 0
 @englertracing: what rational is that comment based on out of curiosity?
  • 1 0
 Look at the photo just below right of the second video. The fastener receptacles allow for a lot of thread, appear highly inflexible, and allow for finer adjustments to the mount position, as shock attachment points don't get in the way. That lower seat mast is a complex piece of construction. Raaw Madonna also has a seat-tube only mount. I'd like to see a gussetless head tube area. If Giant can do it....
  • 1 2
 @ceecee: right but i was saying putting one of the two mounts on the down tube might have looked better
  • 2 0
 I think (like Raaw Madonna) fixing the shock on the seattube only makes it less expensive to do different sizes, as you then only have to use different length of tubes, rather than have to make different shock mount to keep the kinematic in check. Here the seat tube is the most complex part of the bike.
These guys built bikes out of straight tubes, not hydroformed tubing so it's more practical. It's maybe similar for the headtube, Giant can control the thinkness of their tubes in that area, here they can only use a butted tube, so if it's not enough they need a gusset.
  • 2 0
 Hard to hear the video with Ron Jeremy working so hard in the background.
  • 1 0
 Looks very promising!!! Damn I just bought a Gravel bike. Will start to save for this one.
  • 5 4
 This doesn't look like the grim donut...
  • 11 2
 No but way better
  • 6 5
 What's the purpose of the idler pulley?
  • 7 1
 The idler neutralizes the chain “growth” that high pivot bikes generate and prevents pedal kickback
  • 2 3
 @Swervsroundsquirrels: thank you! I thought pedal kickback was a myth. Some people have debunked this, or it does exist in high pivot bikes?
  • 8 2
 @pipomax: I wouldn’t worry too much about it in Florida.
  • 6 0
 @jwdenver: True, except I am living in Chile now do you think I can worry about it here?
  • 2 3
 While the idler pulley certainly helps with chain growth and slap, the stress on it during technical climbing must be enormous. I would guess they accounted for that but after 3-4K miles I'm not sure it will hold up.
  • 2 0
 @Snowytrail: it holds up well after nearly 2 years of (hard) riding!
  • 4 3
 Another Denver C!#K sucker!@jwdenver:
  • 3 1
 @jwdenver: imagine gate keeping what Kinds of bikes people are allowed to be curious about
  • 1 0
 @pipomax: I apologize. I incorrectly thought you were the guy from Florida in another thread being a total rude idiot. Ride on, wherever you are.
  • 1 0
 I love its beautiful red color
  • 1 0
 Has the bike been tested with sideways loads?
  • 20 2
 They're German. It's probably been tested on loads coming from the 5th dimension.
  • 1 2
 @nouseforaname: sry, accidentally downvoted. Clumsy fingers.
  • 1 1
 Presumably the finale of the YouTube documentary will be either the 27.5 or 29th episode?
  • 1 0
 Very nice looking frame
  • 1 0
 Great work! Congrats!
  • 1 0
 This isnt the grim donut
  • 2 3
 Can Someone PLEASE explain what happened to the Grim Donut????
  • 21 0
 It takes time building a fish-eye camera with an angle wide enough to shoot both wheels at once.
  • 1 0
 Its been sent to Simon Cowell to demo.
  • 1 0
 @jrocksdh: too soon, too soon
  • 1 2
 bike nerds!
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