Case Studies

Success Story: Delivering Smart Motion for Premium Bus Seating | Reell Precision Manufacturing

Reell Precision Manufacturing — Fri, 10 Apr 2026 15:01:28 GMT

The Smart Headrest Solution

A leading North American bus seating company, known for its high-quality seating in executive and first-class buses, needed more than just comfort—they needed control. In particular, they were seeking a friction hinge that could provide asymmetric torque for adjustable headrests, helping to enhance rider comfort and ergonomics. When their current supplier failed to meet delivery demands, they turned to Reell.

The Challenge: A Hinge That Couldn’t Keep Up

At the time, the seating manufacturer was using a competitive hinge that met functional expectations but failed to deliver at scale. Their supplier's inability to meet production capacity threatened both project timelines and customer satisfaction. Reell offered a high-performance hinge alternative, but only in a symmetrical torque configuration—missing the key asymmetric function the customer needed.

Recognizing the opportunity, Reell proposed a solution in the form of a new over-molded hinge design that would match the desired functionality, offer better performance, and solve ongoing supply chain challenges. The task? Develop a reliable, durable hinge with asymmetric torque, reduced weight, and proven delivery capability—all within a tight timeline.

The Solution: The Reell MH-10

Reell responded with a 50mm x 50mm asymmetric over-molded torque hinge, offering 3.5 Nm of torque in the high-torque direction. This was no off-the-shelf fix—while designed to become part of Reell’s standard product catalog, the MH-10 was heavily influenced by the specific demands of the bus seating application.

Key engineering wins included:

• A 60% reduction in weight compared to the metal predecessor

• Compatibility with the existing bolt hole pattern

• A faster and more cost-effective manufacturing process using plastic over-molding

Reell also addressed concerns about durability. Some initial failures in a drop-in metal hinge had created concerns of in-field failures. Using FEA analysis, Reell engineers fine-tuned the design for durability, confirming the strength of the over-molded hinge was on par with its metal counterparts. This iterative process reassured the customer and cleared the way for implementation.

Visit MH-10 Product Page

The Results: Performance, Delivered

T he MH-10 is now the preferred hinge in the headrest assembly of the customer’s premium seating lines. It offers smoother motion, reduced part weight, and secure positioning—delivering both engineering confidence and enhanced user experience.

Application Outcome Highlights:

Reliable asymmetric torque for ergonomic headrest positioning
Reduced assembly complexity due to over-molded design
Timely, consistent delivery supporting high-volume production schedules

The Road Ahead

The success of the MH-10 has opened the door to additional projects between Reell and this premium seating manufacturer. As new opportunities emerge for controlled positioning in bus interiors, Reell is actively developing friction hinge solutions for accessories beyond the headrest.

When it comes to adding smart motion to seating comfort, Reell continues to prove that precision matters—especially when reliability rides on it.

From Concept to Completion—We’re Here to Help!

Let’s talk. Reell’s engineering team specializes in designing custom solutions that meet your exact torque, space, and performance requirements—no matter the application.

Reell’s DX100 Hinge Helps Butterfly Seating Transform The In-Flight Experience | Reell Precision Manufacturing

Reell Precision Manufacturing — Fri, 10 Apr 2026 14:53:52 GMT

Airplane seating systems present a unique set of design challenges. Safety testing and millions of passenger miles drive high performance design criteria. Fuel efficiency and passenger density needs require smaller, lighter components. Competition via the passenger experience rewards focus on aesthetics, integrated components, and a smooth premium feel. Finding the right balance between these competing design criteria is the key to success.

Gibson Product Design - Point Of Sale Kiosk | Reell Precision Manufacturing

Reell Precision Manufacturing — Fri, 10 Apr 2026 14:46:21 GMT

Learn how Gibson Product Design used a single, custom friction hinge (the RT-50) to deliver zero-drift position control for their next-generation POS Kiosk screens, reducing component count and cost.

The A-dec 500 Dental Stool | Reell Precision Manufacturing

Reell Precision Manufacturing — Fri, 10 Apr 2026 14:41:37 GMT

A-dec required precise, long-life adjustability for their stools. Explore the precision control hinge technology that delivers ergonomic, smooth, and dependable motion control essential for specialized medical seating.

Armodilo Chooses Reell | Reell Precision Manufacturing

Reell Precision Manufacturing — Fri, 10 Apr 2026 14:31:47 GMT

Armodilo Chooses Reell for Smooth, Silent, Long-life Positioning in Their Sphere

Armodilo’s Sphere is playful, quirky and fun. Looks are just the beginning with this award-winning tablet kiosk. When Armodilo was searching for a mechanism to provide smooth position control for the Sphere’s tablet housing, they looked to Reell’s innovative line of torque inserts.

Latch Lake Chooses Reell | Reell Precision Manufacturing

Reell Precision Manufacturing — Fri, 10 Apr 2026 14:16:39 GMT

Latch Lake Music Selects Reelltorq® Technology For Maximum Holding Power In New Microphone Stand

When one of the world’s premier music stand manufacturers was looking for a solution to allow their new micKing 1100 stand to break down into an easily transportable size, without compromising on their premium strength and stability, they turned to Reell Precision.

The stand uses three Reell TI-340 torque inserts in its patent-pending Symmetric Torque Tripod Base to ensure that the legs stay exactly where they are placed, and never droop while tilted. The TI-340 function allows the stand to breakdown to a size of just under 3 feet.

The TI-340 series is designed to be press-fit into round holes for quick and easy installation, eliminating the need for mounting hardware, reducing the overall cost of customer solutions, and enhancing cosmetics by removing the visible appearance of a hinge.

“For decades music professionals have known tripod bases fail quickly and droop. With the Reell TI-340 torque inserts those issues have finally been put to rest – in a very impressive way”

– Dave Roberts, VP Operations, Latch Lake Music.

Reell provides high-quality innovative solutions to transmit torque, control angular position and protect delicate components from excessive force. Combining the world's most precisely controlled torque technology with the industry's most experienced engineering team provides a perfect product fit in customer applications. Reell's patented technology is widely used in the consumer electronics, automotive, aircraft interiors, medical technology, workstation furniture, kiosk/data terminals, and architectural lighting industries.

Latch Lake Music designs and manufactures the world’s premier music stands, guitars slides and accessories. Their new micKing 1100 stand features a patent-pending base with folding solid core legs to provide the distinctive stability all micKing's are known for while allowing a breakdown size of just under three feet. (latchlakemusic.com)

Cascadia 4x4 Chooses Reell | Reell Precision Manufacturing

Reell Precision Manufacturing — Fri, 10 Apr 2026 14:08:19 GMT

Cascadia 4x4 Chooses Reell for Their Flipster License Plate Mount

Cascadia4x4 was looking for a solution to the problem of where to mount a license plate in a visible and legal location after installing a winch, without detracting from the aesthetics of the vehicle.

Their solution? The Flipster mounting bracket, which uses a Reell MH14 hinge to flip the plate up and out of the way and hold it there, allowing full access to the winch. Simply flip up your license plate and the Flipster holds it in any position.

Holds in any position for more than 20,000 Cycles

The reliable long-life performance provided by the MH-14 is critical to the function of the Flipster.

“Using a Reell MH-14 friction hinge allows the Flipster to hold itself sturdily open in any position without backlash. The glass-filled nylon case and ability to withstand well over 20,000 usage cycles means the Flipster will retain its precise flipping action for years to come”

– Tom Dyakowski, Cascadia Co-owner

Reell provides high-quality innovative solutions to transmit torque, control angular position and protect delicate components from excessive force. Combining the world's most precisely controlled torque technology with the industry's most experienced engineering team provides a perfect product fit in customer applications. Reell's patented technology is widely used in the consumer electronics, automotive, aircraft interiors, medical technology, workstation furniture, kiosk/data terminals, and architectural lighting industries.

Founded in Vancouver, B.C., Cascadia 4X4 specializes in the production of parts and accessories for Jeeps, trucks, and SUVs. Everything at Cascadia 4×4 is designed on the latest CAD software and manufactured using the most cutting edge methods available. Our entire production process, from designing to finishing is done exclusively in Canada. We strive to produce the finest quality products available in the off-road accessories market.
(cascadia4x4.com)

The G7th Capo | Reell Precision Manufacturing

Reell Precision Manufacturing — Fri, 10 Apr 2026 13:56:55 GMT

Clutch mechanism strikes the right chord in design of G7th Performance Guitar Capo

Guitar players are the latest to benefit from a technology most often applied in small OEM clutch applications such as paper handling systems and power tools. The G7th Performance guitar capo, designed around a wrap spring clutch from Reell Precision Manufacturing, St. Paul, MN, has transformed a Medieval-looking guitar accessory into a sleek, high tech, 21st century apparatus. Guitarists worldwide are playing up the benefits.

A capo simplifies guitar playing by allowing a guitarist to change key without changing chord fingering. Essentially a clamp, a capo compresses the strings when placed at a given fret on the neck of a guitar. This changes the pitch or key (each fret being a half step). Guitarists will recognize that playing in the key of E-flat can be difficult to finger. They can play in D, an easier key to finger, by placing the capo on the first fret. Even though they are playing a D chord progression, they are actually playing in the key of E-flat.

Until now, capos have tended to be downright clunky. Most are designed based on spring tension, elastic tension, or some variation of a screw clamp. Problems inherent in these designs include tension control and ease of use. Capos designed with a spring can exert too little string tension on the lower frets, and too much spring tension on the upper frets—throwing the guitar out of tune. Most capos are simply cumbersome and difficult to handle, which is a hindrance to performance.

Modulating into a new design

When Nick Campling, guitarist and head of 42 Technology Ltd., his own product development firm in the U.K., set out to design and market a new capo, he was familiar with these problems. His primary requirement was that the new capo be easy to position, remain firmly in place, and be easy to remove. It should be easy to operate by simply squeezing with the same force as playing a bar chord. And it should look good.

Finding the capo solution meant finding a whole new way to control tension.

“What we were looking for was something that was infinitely adjustable,” said Campling. “That ruled out ratchets, because a ratchet just moves in steps. We wanted to avoid the steps so the tension could be set exactly.

“My partners and I tried several approaches, one being a wrap spring clutch,” said Campling, who formed G7th with business partners to market the new product. “I bought a couple of them to experiment with. The very first prototype was a wrap spring clutch strapped onto the side of a couple bits of aluminum. It was a horrible-looking thing, but it was infinitely adjustable, and we knew we were on the right track,” he said.

An Internet search for “wrap spring clutch” matched him up with his future manufacturing partner, Reell Precision Manufacturing, headquartered in St. Paul, MN and with European facilities in Elsloo, The Netherlands. “The wrap spring is the key to the design because it allows the player to squeeze the capo as if he were squeezing the guitar strings,” said Campling. “Plus, the capo gives the player free movement in one direction, while it locks in the other direction until released.”

How it works

The G7th capo clutch mechanism consists of three main elements: a fixed hub, a moving hub, and a spring whose diameter is slightly smaller than the outside diameter of the two hubs.

The spring is mounted on the two hubs in such a way that it slips in one direction but binds in the other. This allows the guitarist to easily squeeze the capo down on the strings to the desired tension, where it stays until released by a control lever that slightly unwinds the wrap spring and allows the moving hub to rotate and the capo to open.

Basing the design on a clutch mechanism, rather than spring tension or screw clamps, gave Campling the ease of use, tension consistency and compact size he required for the new capo. In fact, it is such a unique application of the wrap spring clutch that G7th has received a patent.

Recommendations for design improvement

Campling contacted Reell engineers with the expectation that Reell would supply off-the-shelf wrap spring clutches for his design. But because Reell develops customized products, engineers on both sides of the Atlantic saw ways to make a good design even better. Their recommendations changed the scope of the project, ultimately saving time and money for both parties.

Reell discovered that a critical design element was creating a clutch mechanism with the right amount of “compliance” (or give) in comparison to the compliance of the rubber components that come in contact with the strings and neck. Wrap spring clutches require about one to two degrees of reverse motion to fully lock. This reverse motion had to be provided by the rubber parts as they were loaded and then pushed back against the clutch.

“Nick asked us for a clutch that he could assemble between the two arms of the capo,” said Mart Habets, co-managing director, Reell Netherlands. “We could see that this would complicate the design and increase the cost of production, so we offered two recommendations. First, we suggested that the clutch be incorporated into the assembly, and manufactured as part of it.”

Manufacturing the capo as one unit reduces the problem of maintaining tight tolerances in the wrap spring clutch assembly. “If you supply a part that has to sit into another part, there are always some tolerance variations,” said Sean Vleugels, design engineer, Reell Netherlands. “That was the factor we could improve. We were able to meet the tight tolerance specifications required by the product by joining together all the parts, resulting in much better control.”

“Second, we even went so far as to recommend that we manufacture and package the product for consumer purchase, a completely new direction for us,” said Habets. “Normally, we ship parts to OEM companies for incorporating into other products. However, we recognized that we could reduce the parts required to assemble the capo. Even though we have lots of experience designing, building and manufacturing clutches, it was new to us to manufacture a good-looking consumer product with high requirements for cosmetic surface area. Fortunately, we had established a strong partnership with Nick, and worked together to meet the challenges of start-up.”

“One reason for the success of this project is the attention to quality Reell brings to the whole capo, not just the clutch,” said Campling. “They work extremely hard to make sure the quality is absolutely excellent, and I have really appreciated that.”

Although guitarists may not recognize the wrap spring technology inherent in the design, they will recognize the elegance and simplicity that is the result of wrap spring technology.

Bosch Hedge Trimmer | Reell Precision Manufacturing

Reell Precision Manufacturing — Fri, 10 Apr 2026 13:53:05 GMT

Unique Combination Clutch-Slip Device from Reell Powers and Protects Bosch Pro Hedge Trimmer

When Bosch created a new line of professional hedge trimmers for the vast hedgerows that populate the UK and European countryside, it needed a tool that was both powerful and safe. One of the early design challenges the company faced was providing a clutch mechanism that would disengage the oscillating blade if the operator took his hands off the grips. When engaged, the clutch had to be able to supply the torque needed to cut through the occasional thick branch without slipping. At the same time, the mechanism had to protect the drive gears from damage if the trimmer encountered something tougher – like a chain link fence. And, it had to be durable, lightweight and compact.

To help meet this complex series of performance characteristics, Bosch turned to Reell Precision Manufacturing in St. Paul, MN for its expertise in small-package torque control. Working through Reell’s European facility in the Netherlands, Reell was able to design and manufacture a compact mechanical clutch based on its wrap spring clutch technology. Also built into the mechanism was a constant-torque slip device based on the company’s patented clip and shaft technology. One technology provided a way to disengage the cutting blade from the motor to improve safety for the operator – the other sets an upper torque limit to protect the motor gears in the event of striking an obstacle.

Powerful tool required protection

“This particular hedge trimmer is designed for professional landscapers, and is a very powerful tool that generates more than three-quarters of a horsepower,” says John Kossett, a Reell project engineer in St. Paul who led the development of the clutch design. “The motor constantly spins at about 25,000 rpm and is geared down to turn the clutch at just 1,500rpm. Acting like an on-off switch, the clutch engages the blades when the operator grips the handles with both hands. If the trimmer hits something it can’t cut through, the blades will stall instantly. However, since the armature of the motor is spinning at 25,000 RPM, it has a lot of kinetic energy in the form of momentum. If there is no ‘give’ anywhere in the system, the small drive gear tends to fail. The built-in slip device allows the kinetic energy to be dissipated over about a half revolution of the clutch, safely slowing and stalling the motor.”

The design of the combination clutch-slip device represented something of a technological breakthrough for both Reell and Bosch. Bosch was able to create a safe and ergonomic trimmer that delivers high power in a very compact, lightweight trimmer. And, for Reell, it represented the first time a wrap spring clutch of theirs was used to control a new high of 80 Newton-meters (708 lb-in) of torque in such a small device. Reell’s design of the integral slip device was derived from the technology used in its line of constant-torque hinges, and this was the first time its clip technology was implemented in such a high torque range, according to Kossett.

Operator safety was improved

“The new patent-pending clutch-slip device design has also improved safety,” says Kossett. “In their previous design, the motor took 1.5 seconds to stop after the operator took a hand off the interlock device in the trimmer’s grip. Now, with the Reell clutch, the blades stop in less than 0.1 seconds, greatly reducing the possibility of operator contact with the moving cutters.” This improved performance is based on the characteristics of the wrap spring clutch, which can engage and disengage quickly and consistently even under heavy load.

In a wrap spring clutch, a coil spring rotates with the drive motor. The output shaft, or driven part, is located down the center of the spring’s coil. If the tail of the spring is moved opposite to the direction of its windings, the coil expands and disengages the output shaft. If the tail of the spring is allowed to relax, the coil shrinks and grabs the shaft, transferring the rotation to the output. Known for their relatively high torque for a given size and consistent engagement timing, wrap spring clutches have found wide application where there is a need to control rotary motion.

Reell had design and manufacturing capability

After Reell designed the clutch-slip device, Bosch was interested in having Reell manufacture the devices as well. Bosch wanted a European-based manufacturer to produce the clutch assembly so it could be transported quickly and cost-effectively to Bosch’s production facility in Switzerland. The two companies worked together to develop a state-of-the-art production line at Reell’s factory in the Netherlands. The new production line is not only semi-automated, it performs 100 percent functional testing of each completed assembly. The testing assures consistency between parts, and also detects and sets aside non-conforming products, avoiding the potential costs of sorting or rework at the customer’s location.

According to Peter Heywood, Bosch Project Manager, “Reell’s engineers quickly took up the challenge and delivered on the most difficult requests. This was truly an international project that included Bosch’s UK-based engineering team, Reell’s US-based design team, Reell’s production facility in the Netherlands, and final assembly at Bosch’s facility in Switzerland.”