Interactive Technical Briefing

RAINIER

An adaptive all-electric trail trike. Designed for diversity, built for freedom.

Forest-ready durability

Inclusive rider fit

Power to explore

Open this on the web and click around. Several sections expand for more detail.

< 70 lbs

Weight

Our lightweight seating system and all-electric frame enable one of the lightest powered adaptive trail trikes on the market.

40-80 miles

Range

A high-capacity lithium-ion e-bike battery is designed to support full-day rides with room for real exploration.

$5k-$7.5k

Target Price

We can reach this price point by manufacturing overseas while keeping the platform focused on practical serviceability.

Prototype Render

Scroll for operational details

Prototype Gallery

Rider beside the physical KOINE prototype at a public meetup

Rear three-quarter view of the physical KOINE prototype

Low front three-quarter outdoor photo of the physical KOINE prototype

Rider using the physical KOINE prototype on a forest path

Quick Overview

A high-level map of the product priorities. Each card expands for additional operational detail.

Rider Adaptability

Three rider positions from upright to long-sitting.
Seat, support, and restraint points adjust for individual fit.
Focus on inclusive rider onboarding.

Fleet Operation

Single-volunteer setup objective.
Compatible with existing transport solutions.
Fast transition between riders.

Maintenance Simplicity

Standard bike shop service strategy.
Low custom part count.
Two core fastener sizes reduce tool management.

Cost Accessibility

Target purchase range supports fleet adoption planning.
Low seasonal consumables target.
Early pilot feedback intended to stabilize long-term service cost.

Trail Performance

Tadpole stance for predictable stability.
Rigid frame prioritizes reliability.
Hub motor supports climbing and assist needs.

Design Overview

Hover the system labels to inspect component intent and how the architecture balances trail feel with low-maintenance fleet use.

Front Wheel Pair Provides steering stability and a predictable front contact patch on varied trail surfaces.

Fat Rear Tire Adds passive shock absorption and rear traction where the frame stays rigid for durability.

Rear Hub Motor Delivers electric propulsion from the rear wheel to support climbing and longer assisted outings.

Rigid Frame Keeps the architecture simpler to maintain, easier to service, and more durable for fleet use.

Component	Function
Front Wheel Pair	Provides steering stability and a predictable front contact patch on varied trail surfaces.
Fat Rear Tire	Adds passive shock absorption and rear traction where the frame stays rigid for durability.
Rear Hub Motor	Delivers electric propulsion from the rear wheel to support climbing and longer assisted outings.
Rigid Frame	Keeps the architecture simpler to maintain, easier to service, and more durable for fleet use.

Rider Adaptability

Use the position controls to move between supported rider setups and review the fixed adjustment points below.

90-degree seated with foot pegs

Fixed Adjustment Points

Static Adjustment Points

Backrest height (removable)
Seat dump
Seat width
Strap placement
Seat fore/aft
Seat height

Max rider height: 6'2"

Max rider weight: 220 lbs

Volunteer adjustment: 20-30 min

Position 1

90-degree seated with foot pegs

Upright seated posture for stable trunk support.
Foot pegs position lower legs in controlled neutral placement.
Uses stock bike pedals for personal user fit preference (straps, studs, etc).

Position 2

45-degree forward position with foot pads

Useful for shorter legs or for riders who prefer their knees closer to their chest for stabilization.
Foot pads support broader lower-limb contact area.

Position 3

Long-sitting configuration with adjustable leg supports

Great for riders already used to standard adaptive off-road seating interfaces.
Leg supports provide extended lower-limb guidance.
Wide adjustability accommodates anthropometric diversity.

Program Operations

Operational constraints are presented as expandable tiles so volunteer and fleet details remain accessible without overloading the initial read.

Bike Weight

< 70 lbs

Allows one volunteer to reposition bike for staging and short loading tasks.

Unload Time

< 5 minutes

Designed for quick unloading from common racks and trailers with minimal handling complexity.

Setup Time

Typically < 10 minutes

Typical setup after rider is selected and baseline seat settings are known.

Transport Compatibility

Fits existing transport solutions

No dedicated trailer architecture planned for baseline operations.

Volunteer Requirement

Single volunteer handling

Routine movement and setup tasks are intended to be handled by one trained volunteer.

Maintenance & Durability

Frame Materials

4130 chromoly steel
Aluminum components

Component Strategy

Standard bicycle components wherever possible
Minimal custom components
All serviceable via normal bike shops

Fastener Standardization

Only two fastener sizes: M5 and M8. Shared lengths allow easy interchange.

Routine Maintenance

Pre-ride inspection
Seasonal service
Estimated seasonal consumables: < $50

Performance Specifications

Configuration	Tadpole trike
Motor	Bafang geared motor or Grin MAX45 Fat Hub Motor
Battery	52V 50-AMP 20 Ah battery
Brakes	Tektro Auriga Twin hydraulic disk brakes
Max torque	95 Nm
Top speed	20 mph
Range	40-80 miles
Max grade	20%
Types of trails	Fire roads, double track, some hiking trails, gravel trails, paved bike paths
Wheels	Front: 26 x 2.4; Rear: 26 x 4.5 fat tire
Tube configuration	Tubeless
Frame architecture	Rigid frame

Market Positioning Comparison

Dimension	Koine RAINIER	Other AMTBs	Not A Wheelchair - The Rig
Best Fit	Programs prioritizing accessible trail riding, easy transfers, simple setup, durability, and a realistic price point	Programs seeking premium off-road capability, higher-end components, and specialized performance features	Riders prioritizing affordable off-road mobility with a strong transport convenience story
Transfer Ease	High seating position enables easy transfers, similar to daily chairs, with three rider positions and adjustable support points for simpler onboarding.	Often optimized more around performance or a specific rider profile than easy assisted transfer.	Accessible fit and transfers, but not designed around the same level of supported rider positioning and transfer flexibility.
Adaptive Support	Built for higher-support use cases with fit-adjustable restraint and seating points.	Can be excellent for specific riders, but usually at higher complexity and cost.	Broader mobility-device framing, but less focused on high-support adaptive seating flexibility.
Price Position	$5k-$7.5k target	Typically $13k+ and often higher with premium controls, suspension, and customization	Starting at $5,099
Trail Positioning	Adaptive trail trike built to balance rider support with practical serviceability.	Focused on top-end adaptive MTB performance and premium ride systems.	Affordable off-road mobility device with lighter emphasis on supported adaptive trail fit.
Durability / Simplicity	Fixed frame and minimal component count with standardized fasteners enable long service lifespans and easy maintenance and repair.	Can be durable, but premium systems and customization usually raise maintenance and service burden.	Bike-part maintenance simplicity is part of the appeal, but the product is less centered on program-ready adaptive support.
Program Value	Designed to help programs serve more riders with easier transfers, simpler volunteer workflows, and lower ongoing operating complexity.	Often better suited for premium individual use cases than repeatable multi-rider program operations.	Strong affordability story, but less aligned with higher-support adaptive program use.

Prototype Status

Prototype Generation: Gen-1
Field Testing Completed: California, Utah, Washington, British Columbia
Current Validation Focus: Testing across broader disability populations
Production Timeline Focus: ~1 year estimated; early demo units produced domestically

Pilot Program Opportunity

We are seeking adaptive sports programs that want to expand trail access with a platform built for easier transfers, simpler volunteer support, and practical long-term service.

Pilot programs will help validate:

Transfer ease across a wider range of riders
Volunteer onboarding and day-of ride workflows
Program storage, transport, and fleet integration
Service intervals, wear points, and long-term maintenance needs

Participating programs receive early access, direct input into design refinement, and a meaningful voice in how RAINIER is shaped for real program use.

Ideal pilot partners are programs serving diverse rider needs, running repeat volunteer operations, and looking for a bike that can help more participants get on trail with less setup friction.

Contact

Name

Joshua Anderson

Organization

Koine Adaptive

Email

info@koineadaptive.com

Website

[WIP]