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Kavenz VHP16

Technologies


frame-detail

Virtual High Pivot

Our frame takes all the advantages of high pivot point bikes without the disadvantage of a very high anti rise. Unlike typical HPP bikes, our VHP system conserves the geometry and offers enough traction under rear braking. Further, it provides massive support under pedaling without the downside of pedal kickback. The so-called Anti Squat is even fine-tuned trough out gears and travel.

High Anti Squat

Bikes with High Pivot Points naturally offer excellent support under pedaling without the downside of pedal kickback when using an idler pulley to reroute the chain. But we went a bit further and optimized the Anti Squat throughout the gears and travel to achieve what we believe is perfection. Plenty of support when climbing but no Pedal Kickback when descending, that makes you faster!

Kavenz rendering

Balanced Anti Rise

Anti Rise is usually the weak point of High Pivot Point bikes as too much Anti Rise results in a less active suspension and loss of travel and traction. Thats why we payed lots of our attention to design a bike that does not change the geometry under rear braking and keeps the suspension active but also prevents the riders mass from shifting forward. We call that system VHP (Virtual High Pivot) and it makes you faster.

Custom Geo Options

A Geometry that actually fits you is one of the most important factors to be fast. That´s why we don´t even offer any standard sizes like M/L/XL. But we do offer a set of reach and seattube options which can be combined to fit your personal needs. Reach can be anything between 440 and 540mm in 20 mm steps. Seattube can be 420, 450 or 480 and the headtube can be either 110 or 125 mm.

Kavenz VHP16

Frame Finish Gallery


Black AnodizedBlack AnodizedPearl Dark GreyPearl Dark GreyRawRawPure WhitePure Whiteluminous yellow - RAL1026luminous yellow - RAL1026Zinc Yellow - RAL1018Zinc Yellow - RAL1018Olive Grey - RAL7002Olive Grey - RAL7002Moss Green + Black - RAL6005Moss Green + Black - RAL6005Light green - RAL6027Light green - RAL6027Water BlueWater BlueLight BlueLight BluePearl Night BluePearl Night BlueSignal Red - RAL3001Signal Red - RAL3001Luminous orangeLuminous orange
Kavenz VHP16

Geometry


Allowing a high level of customization is vital for a bike that fits you like a tailored suit. That´s why we don´t offer any standard sizes like medium or large. Instead, we offer a set of Reach and Seat Tube options that can be combined to fit your personal needs. Reach can be anything between 440 and 540mm in 20 mm steps. The seat tube can be 420, 450 or 480 and the headtube can be either 110 or 125 mm.
And last but not least, you can decide if you want to build a pure 29er or a Mullet. The switch will be done by exchanging the shock mount so you can change it anytime later on. That totals in 36 possible sizes if we don´t count the Mullet option, no wounder the Geometry table is full of information.

Here is one Example:

Reach: 480 mm (third from left)
Seat Tube: 450 mm
Head Tube: 110 mm
Top Tube: 618 mm (third from left)
Front Center: 824 mm (third from left)
Wheel Base: 1249 mm (Front Center + Chain Stay)

Need help with choosing your Geometry?

Water Blue
Kavenz VHP16

Specs


Travel 160mm
Shock Trunnion 205x65
Mounting hardware: 22x8mm
Fork 160-180
Crown to Axle 567-591mm
(Geometry is designed with 581 ATC)
Headtube ZS 44/56 (110mm or 125mm)
Headset ZS44/28.6 | ZS56/40
(for tapered forks)
Rear-Brake IS 2000
Rear-disc diameter 203 mm (PM 203 Adapter Included)
Rear Axle X12 - 148mm (BOOST)
Bottom Bracket 73 mm BSA (ISCG 05 Adapter Optional)
Chainguide Top Guide for the Idler Pulley is included (Lower Guide and Crash Plate optional)
Chainline 49 mm for performance in climbing gears or
52 mm for DH gear priority and BOOST.
Tires 29“ x 2,6“ (tire clearance 81 mm) or
27,5“ rear wheel options with different shock mount
Seattube 31.6 mm inside / 35 mm outside
Length options: 420mm (M) / 450mm (L) / 480mm (XL)
Seatpost 31.6 mm with internal seatpost cable routing
MAX insert: (420) 280mm / (450) 310mm / (480) 340mm
MIN insert: 100mm
Bottle 750 ml
(sideload bottle cage only)
Idler Pulley 14T N/W
Bearings 15x28x7 Max Type (S6902 LLU MAX)
(one oversized bearing type throughout the whole frame)
Weight 3,28 kg
(RAW incl. hardware, w/o shock, Reach 460, Seat Tube 420)
Material Frame - EN AW 7020 T6 heat-treated after welding Axles
Titanium Grade 5 Bearings
Stainless Steel
Finish and Color RAW (No sanding nothing just as pure as it gets)
Black Anodized (Sandblasted and chemically polished)
Powder Coated (RAL K5 Classic Color)
Shock Options Fox Float DPX2 - Fox Float X2 - Fox DHX2 - EXT Storia Lok V3
(All shocks come in custom tune, and coil shocks come incl. correct coil spring)
Kavenz VHP16

Kinematics


If you like and understand data, then this is for you, all the graphs.
chart-anti-squat
The V3 of the Kavenz has a new position of the Idler Pulley, which maximizes the Anti-Squat (Green Graph). Bikes with High Pivot Points naturally offer excellent support under pedaling without the downside of pedal kickback when using an idler pulley to reroute the chain. But we went a bit further and optimized the Anti Squat throughout the gears and travel to achieve what we believe is perfection. Plenty of support when climbing but no Pedal-Kickback in DH gears! Aha, the 4-Bar XYZ bike we use for comparison is the top model of a big bike brand from Switzerland, which we consider one of the best you can buy.
chart-pedal-kickback
High Pivot Bikes don´t need as much Pedal-Kickback, so the Pedal-Kickback remains very low in comparison to traditional bikes (Grey Graph). You can not recognize any Pedal-Kickback in Medium and DH Gears. We achieve this through the dropping Anti-Squat curve. We did not want to throw to many graphics on you. But if you need to know it: 34/10 results in -2° Pedal Kick-Back, that means total freedom for your rear suspension. 34/50 results in 19° Pedal Kick-Back and 140% Anti-Squat in SAG Zone; this makes the Kavenz feel like an XC Bike. The Pedal Kick-Back displayed is relative to the ground not to the bike frame, so it shows the worst case. If you´d look at the isolated, you´d see even less Pedal Kick-Back.
chart-rear-axle-path
The rearward motion allows the rear wheel to move away from, not against, obstacles. This Axle-Path enables the bike to keep its momentum when the terrain gets rough. If you compare to the grey graph, which is a 4 Bar 29er with equal travel, you see how vast the difference is. Unlike other HPP bikes, we did not go radical with the rear axle path to maintain the Anti-Rise value under 100% and avoid weight shifting. That keeps the suspension open and conserves the geometry if you hit your rear brake hard, which means traction and control.
chart-anti-rise
Anti Rise is usually the weak point of High Pivot Point bikes, as too much Anti Rise results in a less active suspension and loss of travel and traction. The 4 Bar XYZ bike would rise when you hit the rear brake and steepen the geometry. A typical HPP bike would squat, which would stiffen up the rear suspension but give you a slacker geometry. A high Anti-Rise can be useful for DH racing where you know your lines and braking points blind. That's why we designed a bike that does not change the geometry under rear braking and keeps the suspension active but also prevents the rider's mass from shifting forward. We call that system VHP (Virtual High Pivot), and it makes you faster.
chart-leverage-ratio
The suspension design generates 160 mm of travel using a 65 mm stroke shock, producing a 30% progression. In the beginning, the bike is very supple. The mid-stroke is designed to provide adequate support when you push and pump, but remain open enough to absorb big hits with no harshness. The end stroke does not increase further in the rate as most shocks feature some bottom out elements, and we want to make use of the entire travel.
kavenz in action
Kavenz VHP16

About the Project


It all started with a passion project of our mother company 77designz. We wanted to build an enduro bike that delivers uncompromised performance. No market studies, no bullshit marketing kinematics, only serious engineering straight to the point of making the fastest enduro bike we can imagine.

The Goal:

Our goal was to design an enduro race bike that climbs like an all-mountain bike but descends like a downhill bike. To achieve the highest performance, we knew that we need to go down the “High Pivot Point” road. But there was one thing bothering us with that, and it was the high anti-rise that usually comes along with “High Pivot Point” bikes.

We wanted a bike that conserves the geometry and offers enough traction under braking but also provides massive support under pedaling with no pedal kickback. As soon as we figured how we had to design the kinematics, we were ready to start.

We designed with the rule of simplicity in mind; Straight lines, no unnecessary weight, or shape. We believe that straight tubes do the best job in terms of stiffness too weight ratios, and also they hold strong against impacts.

For a little more on the backstory, check some articles on Pinkbike:
Developing – Manufacturing – Testing – Rig-Testing

After one year on the prototypes and many exited people who tried the bike, we decided to improve the design towards a production-ready product and go down the route of becoming a bike brand.

The Name:

The name we choose, ‘KAVENZ’ originates from the German word Kaventsmann, which means ‘Monster Wave’ or reliable and robust person in our local slang (Masemate). As we are proudly going to weld the frame with bespoke geometry options in Germany, we found that the name suits us well.

kavenz_welding
frame-detail
kavenz-side-view
kavenz-in-action
kavenz-handmade
Kavenz VHP16

FAQ


Q: I want to mount a 180 fork. How much flatter does this make the seat angle?
A: Approx: 0.35 ° in SAG position.

Q: I ride the Sram Eagle. With the high pivot construction, everything is a little different. Can I ride the normal Eagle chainring?
A: No, they wear out so quickly because of the strange tooth profile. We recommend round chainrings from aB

Q: Which options are you going to offer?
A: We will offer build kits including Shocks, Forks, Dropper Seatpost, Cockpit, and Accessories.

Q: Why not going for a 34.9mm Seatpost?
A: Most seat posts available did not make use of the benefits of the bigger diameter and got heavier. Also, many people would switch the frame and keep some components like the dropper post. However, we are thinking to integrate the Eightpins a bit further down the road, eventually becomes available in 2021.

Q: Will you do longer chainstays for taller riders?
A: We believe in short chainstays and have no personal intention to offer longer Chain Stays. However, if the market demands such we will consider delivering with the next batch. Technically it´s easy to do it was just not important to us.

Q: Will you be shipping internationally?
A: Yes, at the moment we are not aware of any country restrictions.

Q: Can I use normal chains?
A: Yes you can, 34T Chainring requires 120 links and a 32T Chainring requires 118 links in combination with a 10-50 cassette.

Q: How do you get the 49mm chainline option? Is it by offsetting the pulley?
A: We use two types of washers to offer both chain line options.

Q: Do you provide attachment points for a small tool bag?

A: We thought to implement the 76 Bag, but it did not look very clean, so at this point, there is nothing planned yet, and we would recommend using our 77designz Straps.

Q: How does the Kavenz VHP16 compare to the Nomad 4?
A: The Kavenz is similar when it comes to Anti Squat and Anti Rise, which means it accelerates as good and stays as balanced if you hit the rear brake. The Kavenz VHP16 offers is a steeper Seattube Angle where especially tall riders benefit from resulting in a more efficient pedaling position. Where we outperform the Nomad is in Downhill, because of the Rearward Axle Path and less Pedal Kickback which means you will keep the momentum with less effort when it gets rowdy and that makes you faster.

Q: You mentioned a min. Rear disc of 185mm. It is quite unusual… 180mm was not possible?
A: Yes, it´s rare, but 180 disc is nearly impossible also the 185 Rotor does not allow for all kinds of Rear Brakes, we recommend 203mm with our own Adapter. 29er wheels generate quite some torque and the bike is designed for high speed.Those are the PM Adapter we recommend if you don’t want to use ours:-203mm: Shimano SM-MA-R2003P/S
-185mm: Sram Avid 185R IS/PM

Q: Why is the seat tube not steeper like on other bikes?
A: The Kavenz VHP16 features a 77.5° seat tube angle and does not require a steeper one as the geometry is conserved by the extreme high Anti-Squat.

Q: Is the pedal kickback always the same no matter which chainring size I use?
A: The pedal kickback and the Anti Squat are completely independent of the chainring size so it does not matter if you run a 26T or 36T the kinematics always remains the same.

Q: Can I use Oval Chainrings?
A: Technically yes but it would be almost impossible to find some that offer the correct timing. As the chain is routed differently you can not use any standard chainrings the only option are Race Face chainrings mounted with a different rotation. However, we figured that they create some kind of drag so we do not recommend to use them.

Q: Which Fox Tune do I need?
A: 978-01-346 2022 DHX2 F-S Cr 2pos-Adj Trunnion Kavenz VHP V5 205-65 ECC010 ECR010 Rezi CM Orange Logo or
979-00-426 2022 FLOAT X2 F-S K 2pos-Adj Trunnion Kavenz VHP V5 205-65 0.3 Spacer x1 CL002 ECR010 Rezi CM Orange Neutral Logo

Q: I am considering your frame with a OneUp 210 dropper and would like to have it fully slammed in (its 297mm length but including the 15mm actuator).
A: The maximum insertion for the 420mm seat tube length is 280mm but there is more room and this is only the cylindrical area so yes the One Up V2 210 will fit in completely.

Q: Are there any brakes that wont fit into the rear triangle of the Kavenz VHP16?
A: Yes the Shimano Saint, Deore XT M8020 and Formula Cura Brakes are not recommended for the Kavenz as the cable routing won´t fit well.

Any question? Get in touch with us.