THE PSALM 150 FRAME
Whoa, what is this thing?
Psalm 150 frames are built around my patented, ultra-sensitive but extremely efficient 3VO dual-link suspension system. Each part of the frame is CNC machined from 7075-T6 aluminum. Each hollow frame and swingarm are prepped and bonded by hand by me in Vancouver, WA. I've been test riding two prototypes since September 2022. Both are still going strong, but more development work is needed. Frames must exceed all independent lab testing and withstand more ride testing. If they can be created, a small number of frames and complete bikes will be available for purchase.
What's up with the company and the name?
The name Ministry Cycles comes from my belief in bicycles as a force for positive change and my unhealthy affection for '80s industrial music (not necessarily in that order). Endless hours spent calculating kinematics and geometry are no different from the hours spent sketching shapes. I am obsessed with every little detail of this frame. From the moment I first rode a mountain bike in the late 1980s, I’ve never stopped asking myself how to create something better. I wanted a bike that let me descend faster, climb faster, was nearly indestructible, and was easy to own. Utterly distinct, bombproof, and fast as hell. There is nothing else like a Psalm 150.
When can I get a bike or frame?
Two functional prototypes have been created, but much more development work and testing is needed before the frames can be made available, and the development expenses are a major challenge. By request from all of you following me on Instagram and TikTok, I've added an option to donate to help make this frame possible. You can also sign up for my email list to keep up with everything I'm doing.
SPEC & GEOMETRY
3VO Suspension: Control Freak
High sensitivity and a coil-friendly super-progressive leverage ratio let you rail corners without blowing through travel and flow through high-speed gnar with confidence. I obsessed about keeping the bike responsive and fun to ride in technical situations, while being able to absolutely erase impacts when it’s time to get down. This is a frame that sees every small lip and obstacle as a good time, but punches well above its 150mm travel when you need to let it roll. As sensitive as the suspension is to even small impacts, this is also a bike that doesn't mind the climb to the top. Unlike a lot of designs that cheat on center of gravity location or gearing, the 3VO suspension has well over 100% of anti-squat even when you’re in the largest rear cog, and even if you choose to run a 34-tooth chainring. When it comes to climbing, very few systems can match the efficiency of a 3VO bike. When it comes to balancing sensitivity, responsiveness, and efficiency, nothing is even close.
Full CNC 7075-T6: The Real Benefits of Unreal Design
The Psalm 150 is not another mass-produced carbon or welded bike. Instead, each frame is fabricated using techniques more common in auto racing and aerospace applications. The traditional factory method is great for mass-producing bicycles at the lowest possible cost, but my goal is to produce only what I need, as needed, and my priorities are design freedom, precision, consistency, and sustainability. The Psalm 150 frame is machined from 7075-T6 aluminum, including a monocoque aluminum shell. It’s an expensive process, but it drastically shortens the supply chain, production lead times, and shipping delays associated with conventional bicycle frame production methods. Whether welded or made from carbon fiber, conventional frame production often requires two years or more from initial concept to finished product. This inevitably leads to design compromises, overproduction, marketing-driven “advances,” herd mentality, and the planned obsolescence of forced product cycles. Conventional methods are ultimately far more environmentally irresponsible than just making exactly what you want, and only as much as you need. It also doesn’t hurt that the Psalm 150’s aerospace bonded 7075-T6 frame is potentially strong enough to last forever and has a modular head tube and dropouts for future adjustability, because the only thing better than a frame that can be recycled, is a frame you never want to replace.
160mm or 170mm
73mm BSA Threaded
Rear Hub Spacing:
IS 41/52 (10mm reach adjust)
Seat Post Diameter:
Seat Post Collar Size:
Minimum Rear Rotor Size:
8 x 6902 (15x28x7mm)
2 x 6900 (10x22x6mm)
Recommended Fork Rake:
Recommended Fork Axle to Crown:
Recommended Crank Arm Length:
When it comes to ride quality, nothing can touch a smooth, progressive leverage ratio. The 3VO system is optimized for coil spring shocks and high-volume air shocks. This progressive leverage ratio allows for instant initial reaction to small bumps and square edged impacts, even when climbing. True mid-range support means you can rail corners and hunt for fun on every little trail feature. Excellent bottom-out resistance means you can find your limits while keeping things under control.
High anti-squat counteracts the pedaling forces that cause a bike to bob up and down under power. To calculate anti-squat, designers have to choose a center-of-gravity point. The truth is nobody ever asks what number they used, so it's easy to claim all sorts of numbers. It's also easy to display really high anti-squat numbers if you measure with the chain in the smaller cogs and a with a small chainring. I use a center-of-gravity point 1150mm above the ground, and I measure in with a 32t chainring and a 50t cog, because that's a gear you'd actually use when climbing the worst climbs. Most importantly, 3VO is able to generate this high anti-squat while still keeping pedal kickback to a respectable minimum.
Anti-rise is all about balance: too much, and you begin to compromise sensitivity and traction; too little and your rear suspension extends under braking, pitching you forward. Here's the thing about anti-rise: any time you're descending while squeezing the brake, your weight is shifting forward, which causes your fork to dive, which causes your body to shift forward even more. I'm all about neutralizing anti-rise and helping keep your weight rearward and low. An anti-rise range with 100% near suspension sag point is the single best way to preserve geometry without compromising traction.
|A Reach (adjustable):||480mm / 490mm|
|C Effective Top Tube:||620mm / 630mm|
|D Seat Tube Length:||435mm|
|E Head Tube Length:||100mm|
|F Head Tube Angle:||65°|
|G Virtual Seat Tube Angle:||78°|
|G Actual Seat Tube Angle:||75°|
|H Front Center:||816mm|
|I Chain Stay Length (adjustable):||435mm / 445mm|
|J Wheelbase:||1250mm / 1260mm|
|K BB Drop:||30mm|
|N Estimated Standover:||686mm|
|Recommended Rider Height in cm:||175cm - 191cm (5'9" - 6'3")|