Adventure Rope Gear
Adventure Rope Gear
Your Account
Your Email Address
Your Password
Shopping Cart more
0 items
Categories
View All Products
ASCENDERS
AUTOMATIC BELAY UNITS
BELAY DEVICES
BOOKS
BUILDER TOOLS & HARDWARE
CARABINERS
FACILITATOR GEAR & ACTIVITIES
HARNESSES
HEADLAMPS
HELMETS
KNIVES
LANYARDS & SAFETY STRAPS
LOBSTER CLAWS
PULLEYS FOR ROPE & RESCUE
RESCUE GEAR
ROCK CLIMBING GEAR
ROPE & ROPE ACCESSORIES
ROPE LADDERS & CARGO NETS
SPELUNKING & CAVING GEAR
ZIP LINE CONSULTING
ZIP LINE GEAR
ZIP LINE KITS
ZIP LINE PLANS & SPECS
ZIP LINE PULLEYS & TROLLEYS
Information
LIABILITY RELEASE
About Us
Contact Us
Terms and Conditions
Shipping and Returns
Gift Voucher FAQs
Privacy
Cleaning Gear
Downloads
Trolley Review Chart
Monthly Specials
Zip Line Kit Instructions
Zip Line Trolley Review Chart
ZIP LINE TROLLEY
REVIEW AND COMPARISON CHART
Trolley vs. Pulley - Trolley is a pulley that moves along a cable or rope. A pulley is stationary and the rope or cable moves through or over it. The same device may be a pulley or a trolley depending on how it is used.
Wheel Size – 1-1/2” wheels or 2” wheels are the most common.  1-1/2” wheels use a smaller bearing than the 2” wheels. 1-1/2” bearings are much like a skateboard bearings. They have low resistance and a high efficiency but do not last long under heavy use and heavy loads.  2” wheels have bearings that are bigger and more durable.  They may not have the same efficiency, but will outlast the smaller bearings by a factor of 10. 1-1/2” wheels typically have a efficiency rating of 90+%. Most 2” wheels have an efficiency rating of 85%+. In the short term the smaller wheels will be faster but that will quickly change as the smaller wheel bearings get worn. There are also 4”, 6”, & 8” wheels that will be joining this review shortly.
Axle - All axles are stainless steel unless noted. Axle refers to the mechanics: Bushing, Bearing, or Double Bearing. 1/4" axles are typically used for 1.5" wheels. 3/8" axles are typically used for 2" wheel

Bearings vs Bushings – Bearings are small steel balls that are sealed in a closed ring. They are exposed to the sheave and the axle. The bearing has less surface area contact, and therefore it is more efficient and faster than a bushing. Bushings are longish cylinders that are also exposed to the axle and sheave. The bushings have much more surface contact and therefore less efficiency; typically only 50%-70% of a bearing wheel.

Size – length x height x width in inches.

bushing

bearing

BUSHINGS

BEARINGS

MBS – Minimum Breaking StrengthShown in pound force (lbf) and kilo Newton (kN).  1 kN = 225 lbf.

Double Bearings – Used in many of the ¾” trolleys, 2 sets of bearing are used in each wheel instead of one. this lessens the load on each bearing set assuring long life and consistently fast rides. Efficiency is reduced in exchange for consistency and long life.

Speed rating – The speed rating is based on manufacturer’s recommendations or bearing specifications. You may travel faster but the trolley may be damaged or destroyed if speeds are exceeded. The bearings will probably overheat and fail.

All sheaves - (wheels) on the listed trolleys are steel. Aluminum wheels are only good for traveling on rope. These can be found in the rescue rope pulley section.
Back up – Some trolleys are equipped with backup loops or ‘ears’. Most loops are positioned so a second steel carabiner can be clipped to the trolley and over the cable in case of complete trolley failure. Double wheel trolleys are by nature ‘backed up’ with the second wheel and through bolt.  Many commercial operations utilize the back-up system for added safety and insurance requirements.
Sides / Side plates - Aluminum or steel is used for the side plates. Aluminum is fine for most home zip lines and playground style zip lines. Steel sides should be used for longer, faster, and commercial zip lines. Because aluminum is a much softer metal than steel, aluminum can get 'chewed' up or 'ground down' if it comes in contact with the cable during the ride.
Loading and unloading - Loading the trolley on and off the cable is relitively simple. Most trolleys have split sides that makes it easy to slip over the cable. Some have swinging side plates which are still fairly simple to use but requires a bit of practice to be smooth. A couple of the trolleys have other systems than can loaded and unloaded without detaching from the passenger.
Rebuilding trolleys - Eventually every trolley will need rebuilding. Bearings are the wearing part and will fail over time. rolley using bolted axles can usually be easily in inexpensively rebuilt. Axles secured with grommets usually cannot be rebuilt and must be repurchased. Typically bearing sets cost $25 - 40 per set and take only a few minutes to replace.
 
ZIP LINE TROLLEYS - BEST & WORST

Petzl Tandem Cable $ 69 Size: 4.25”x3.25”x1.2” This is the most basic of zip line trolleys. It is inexpensive and great for most backyard zip lines; fairly slow compared to most other trolleys.

P21cab

Wheel dia. 1.5” Max Cable Dia: 1/2”
Weight: 11 oz Max speed: 40 mph
Sides: Aluminum MBS: 24 kN. 5,000 lbf
Axle: Bushing  
 starstar

Made in France
MFR: PETZL


Petzl Tandem Speed $ 79 Size: 4.25”x3.25”x1.2” One of the most popular back yard trolleys; the tandem speed has bearings and good speed. This one is in use in some commercial operations because of it super light weight and price. It will last for years in the yard or a few months on commercial lines. 1/2" cable will work but it is difficult to push the trolley on or off 1/2" cable. These are ideally suited for 3/8" cable. All petzl pulleys are not rebuildable.

p21spe

Wheel dia. 1.5” Max Cable Dia: 1/2”
Weight: 11 oz Max speed: 50 mph
Sides: Aluminum MBS: 24 kN. 5,000 lbf
Axle: Bearing

 

starstarstar

Made in France
MFR: PETZL


Fusion Tesa $ 60 Size: 4.25”x3”x1.2”

This is the best Petzl knock off we’ve seen.  The bearings are decent quality; the steel good. The price fantastic.  In side by side run offs, the Tesa nearly kept up with the Tandem Speed in longevity and endurance, eventually lasting 78% of the life of the Tandem Speed. This is a great economy pulley for backyard use.

tessa

Wheel dia. 1.5” Max Cable Dia: 1/2”
Weight: 8.2 oz Max speed: 50 mph
Sides: Aluminum MBS: 24 kN. 5,000 lbf
Axle: Ball Bearing

 

starstarstar

Made in USA
MFR: Fusion Climb


Micro Velocity $ 86 Size: 5”x3”x1.5” The micro velocity trolley is great for home and commercial zip lines. it is light weight with steel sides and a small design that is easy to load and transport. The smaller wheels and bearings are the only thins working against this god design. It comes up short on speed and longevity. Also the bent back-up loops can contact the zip line cable causing damage to the cable and trolley, especially a looser, saggy cable.
micro Wheel dia. 1.5” Max Cable Dia: 1/2”
Weight: 11.5 oz Max speed: 60 mph
Sides: Steel MBA: 62.2 kN, 14,000 lbf
Axle: Bearing  
Made in USA
MFR: CMI

Kong Pamir $ 99 Size: 4.5”x3.4”x1.2” This is a fairly lame knock off of the Petzl models. Bushings make this one of the slowest trolleys available. These have no longevity and the bearings burn up in a short time. Oh yea, it is overpriced as well. It good for short home zip lines but why pay so much?
pamir
Wheel dia. 1.5” Max Cable Dia: 1/2”
Weight:12 oz Max speed: 35 mph
Sides: Aluminum MBS: 30kN, 6,500 lbf
Axle: Bushing  
starstar Made in Italy
MFR: KONG

SMC Pulley $ 99 Size: 4.5"x3.4"x1.2"

We were so excited to see a rebuildable low cost trolley similar to the Tandem Speed. This offers replaceable bearing rings and a replacement kit, allowing a lower cost zip line pulley to be possibly used for commercial applications. Unfortunately the bearings they chose were such low quality that they need to be changed almost daily. The Tandem Speed outlasted these by a factor of 30. Great idea-Needs better quality.

SMC
Wheel dia. 1.5” Max Cable Dia: 1/2”
Weight:12 oz Max speed: 35 mph
Sides: Aluminum MBS: 26 kN (5845 lbf)
Axle: Ball Bearing  
starstar Made in USA
MFR: SMC

QuickSilver $ 99 Size: 5"x3.5"x1" A new design from a new company. This is best described as a hybrid. It has 2" wheels, but it uses a bearing ring which contains smaller bearings than the normal 2" wheels; much closer in size to bearings used in 1-1/2" wheels. The Quicksilver uses two sets of these bearing in each wheel greatly extending the life. These will last two - three times longer than the 1-1/2" wheel models but less than half as long as the rest of the 2" wheel trolleys. The large clip-in hole holds three carabiners. Good only for 3/8" or smaller cable. Grommet axles mean these cannot be rebuilt.
** We have only tested one of these to destruction.
quicksilver
Wheel dia. 2” Max Cable Dia: 3/8”
Weight: Max speed: 120 mph
Sides: Steel MBS: 45 kN, 10,000 lbf
Axle: Double Bearing  
starstarstarstar Made in USA
MFR: Zip Line Gear

Petzl Trac P-24 $ 115 Size: 4.2”x5.5”x3” The Trac has a built in carabiner that eliminates the need for two hands when loading or unloading the trolley from the cable. The flaring design at cable level makes this one of the easiest to load on 1/2" cable. The best things about this are the one handed operation, It can be loaded on the cable while remaining attached to the passenger, and flaring side plates. There are some significant disadvantages however. The gate opening is very small with the trolley side plate in the way. Clipping in bulky tethers and carabiners is almost impossible. The carabiner will far outlast the bearings. The folded up end plates at the front and back will drag on a loose or sagging line. The main concern with this zip line trolley is inversion. Should this trolley flip up-side-down while on the cable, usually when the passenger is about to jump, it will NOT right itself under load as other zip line trolleys will.
P24
Wheel dia. 1.5” Max Cable Dia: 1/2”
Weight: 14 oz Max speed: 50 mph
Sides: Aluminum MBS: 24 kN. 5,000 lbf
Axle: Bearing  
sss Made in France
MFR: PETZL

Petzl Trac P-24 Plus $ 150 Size: 4.2”x5.5”x3” The Petzl Trac Plus is exactly the same and the Petzl Plus just offer Double Bearing for a longer life. It has the same advantages and disadvantages as the Trac.
TracPlus
Wheel dia. 1.5” Max Cable Dia: 1/2”
Weight: 14 oz Max speed: 50 mph
Sides: Aluminum MBS: 24 kN. 5,000 lbf
Axle: Double Bearing  
ssss Made in France
MFR: PETZL

Kong Zip Evo $ 129 Size: 4.5”x6”x1.5” Review coming soon.

Kong Zip Evo

Wheel dia. 1.5” Max Cable Dia: 1/2”
Weight: 14 oz Max speed: 45 mph
Sides: Aluminum MBS: 20 kN. 4,000 lbf
Axle: Bearing  
star Made in Italy
MFR: KONG

Mighty Mini $ 129 Size: 6”x4”x7/8” Robertson really got a winner with this design. It is the SR71 jr. Based on one of the most popular commercial trolley designs, the mighty mini has strength, speed, and longevity. 2" wheels and larger bearings make this the least expensive professional grade trolley available. At just over 1 lb, it is easy to transport. It is completely rebuildable when it is time to replace the bearings.
mini
Wheel dia. 2” Max Cable Dia: 1/2”
Weight: 21 oz Max speed: 90 mph
Sides: Steel MBS: 84 kN. 19,000 lbf
Axle: Bearing  
Made in USA
MFR: ROBERTSON MTN

SR 71 Blackbird $ 159 Size: 7”x5.25”x1.5” The SR-71 is a proven performer for zip line operations.; built from .101 thick 304 stainless steel. Unlike the competition it is assembled using machined axles which may cost more but give the SR-71 zip trolley unparalleled structural integrity. The SR-71 zip trolley uses an additional back up bolt should there ever be a catastrophic failure during use. The sheaves are case hardened to a 56-58 Rockwell and spin on ball bearings to provide excellent wear characteristics.  Built to accept two carabiners. This is one of the most popular zip line trolleys ever made. The SR 71 is completely rebuildable when required.
sr71
Wheel dia. 2” Max Cable Dia: 1/2”
Weight: 1lb-10oz Max speed: 90 mph
Sides: Steel
MBS: 84 kN, 19,000 lbf
Axle: Bearing  
Made in USA
MFR: ROBERTSON

PA Zip Trolley 3/8" - $ 160
1/2" - $ 215
Size: 5.75”x4.5”x7/8” Considered one of the classics of zip line trolleys, The PA trolley is usually well designed and built. These have been thought to be one of the fastest trolleys available but in side by side testing (unofficial of course), the robertson trolleys came in a bit faster than the PA trolley almost every time. On the down side, the side plates squeeze so close together at the bottom, it can be challenging to get it on and off the cable. Grommeted axles make this impossible to rebuild. Lately(2010) Several of these have come back with blown bearing seals after only a few runs. The slower performance and easily blown bearings suggest that PA has changed the type of make of bearings used in the past year or two.

PA

Wheel dia. 2” Max Cable Dia: 3/8” | 1/2”
Weight: 1lb-5 oz Max speed: 80 mph
Sides: Steel MBS: 62.2kN, 14,000 lbf
Axle: Bearing  
Made in USA
MFR: Project Adventure

CMI Zip Trolley $ 174 Size: 6.25”x6”x1.5” The original CMI zip line trolley: a true classic! Probably the oldest and best known trolley in the field, the design has not changed since its inception sometime in the 70's. Some have been in use since that time: over 35 years. This is the Sherman Tank of trolleys with a massive 1/2" central bolt, swinging side plates, and solid side plates It has a back-up hole for a steel carabiner. The main detractors from this trolley is only one carabiner can fit into the main clip-in hole. It is heavy to carry around and the swinging side plates takes practice to load and unload with only two hands.
cmi
Wheel dia. 2” Max Cable Dia: 1/2”
Weight: 2lb-1 oz Max speed: 90 mph
Sides: Steel MBS: 62.2 kN, 14,000 lbf
Axle: Bearing  
Made in USA
MFR: CMI

SR71-3/4” Fat Cat $ 225 Size: 7”x5.5”x1.5” Developed for the zip line industry and the increasing longer and thicker zip line cables being used. The Fat Cat uses two sets of bearing on each wheel. This greatly reduces the loads and increases speed and longevity. Available with or without back up loops. These are being used on 3,000'+ zip lines and holding up like you would expect from Robertson trolleys: extremely well. They are completely rebuildable and load easily on 3/4" or smaller cable.
fat cat
Wheel dia. 2” Max Cable Dia: 3/4”
Weight: 1lb-11 oz Max speed: 120 mph
Sides: Steel MBS: 84 kN, 19,000 lbf
Axle: Double Bearing  
Made in USA
MFR: ROBERTSON

Cobra $ 215 Size: 7.5”x6.5”x1.8” The Cobra is probably the most durable and secure trolley available. 5 separate through bolts are installed for ultimate security. Two axle bolts, two 3/8" back u bolts, and one giant 1/2" central swing bolt assure integrity. All back-up bolts have protective sleeves protecting the threads from debris and damage. The main connection point will hold two carabiners. Three other back-up carabiner options give the most options and versatility of any of the super duty trolleys.
Cobra
Wheel dia. 2” Max Cable Dia: 1/2”
Weight: 2lb-5oz Max speed: 90 mph
Sides: Steel MBS: 84 kN, 19,000 lbf
Axle: Bearing  
Made in USA
MFR: ROBERTSON

Zip Tour Trolley $ 225 Size: 12.5”x11.5”x14” Developed for the military, the Zip Tour trolley has one of the longest wheel bases (8") available. This provides stability and even wear as well as great place to clip-in for superman style rides. Optional handles help keep passenger facing forwards for those sometimes tricky landings. The zip tour trolley provides numerous clip-in configurations for a variety of passenger options. Weighing in at 4.5 lbs, this is not the best trolley for carrying around long distances or up big hills.

zip tour

Wheel dia. 2” Max Cable Dia: 1/2”
Weight: 4lb-8oz Max speed: 90 mph
Sides: Steel MBS: 72 kN, 16,000 lbf
Axle: Bearing  
 starstarstarstar Made in USA
MFR: ROBERTSON MTN

Canopy Tour Trolley $ 267 Size: 6.25"x19.25"x15" Developed in response to the growing canopy tour industry, CMI modified its original trolley design to include the 15" drop handles and additional clip-in points. At 4.8 lbs, this is the heaviest of all the trolleys. CMI wheels and bearings have a long history of reliability. The extended handles give your passengers the ability to keep facing forward during the ride and landing.
CMI canopy
Wheel dia. 2” Max Cable Dia: 1/2”
Weight: 4.8lb Max speed: 90 mph
Sides: Steel MBS: 62.2 kN, 14,000 lbf
Axle: Bearing  
Made in USA
MFR: CMI

Cobra for ¾” cable  $ 285 Size: 7.5”x6.5”x2” The Cobra is probably the most durable and secure trolley available. 5 separate through bolts are installed for ultimate security. Two axle bolts, two 3/8" back-up bolts, and one giant 1/2" central swing bolt assure integrity. All back-up bolts have protective sleeves protecting the threads from debris and damage. The main connection point will hold two carabiners. Three other back-up carabiner options give the most options and versatility of any of the super duty trolleys. Each wheel has double bearings for long life riding fast on fat cables.
Cobra 3-4
Wheel dia. 2” Max Cable Dia: 3/4”
Weight: 2lb-12oz Max speed: 120 mph
Sides: Steel MBS: 84 kN, 19,000 lbf
Axle: Double Bearing  
Made in USA
MFR: ROBERTSON

Zip Tour ¾” cable $ 295 Size: 12.5”x11.5”x15” Developed for the military, the Zip Tour trolley has one of the longest wheel bases (8") available. This provides stability and even wear as well as great place to clip-in for superman style rides. Optional handles help keep passenger facing forwards for those sometimes tricky landings. The zip tour trolley provides numerous clip-in configurations for a variety of passenger options. Weighing in at 4.5 lbs, this is not the best trolley for carrying around long distances or up big hills. as with all the Robertson 3/4" trolleys, this has double bearing on each wheel for reduce wear, longevity, and smooooth rides.
ziptour34
Wheel dia. 2” Max Cable Dia: 3/4”
Weight: 4lb-12oz Max speed: 120 mph
Sides: Steel MBS: 72 kN, 16,000 lbf
Axle: Double Bearing  
starstarstarstar Made in USA
MFR: ROBERTSON

Hammerhead $ 359 Size: 10"x5.5"x1.2" Not tested yet.

hammerhead

Wheel dia. 3.5" Max Cable Dia. 5/8 "
Weight: 5 lb, Max Speed: 150 mph
Sides: Steel MBS: 72 kN, 16,000 lb
Axle: Double Bearing  
starstarstar Made in USA
MFR: Zip Line Gear

       

 

     
     
     
     
     
Search
 
Use keywords to find the product you are looking for.
Advanced Search
Specials more
Skil 12V Max Lithium Cordless Drill
Skil 12V Max Lithium Cordless Drill
 $331.54  $218.95 
Best Sellers
01.New England KM III Static Kernmantle Rescue Rope
02.Bungee Cord Shock Cord Per Foot
03.Ropes Course Staples
04.Rescue Lifeline Static Rope
05.Cable Clamps: Drop Forged Cable Clamps
06.Accessory Rope: Cords Prusik Lines
07.Zip Line Construction Guide
08.Tree Wrap Hose: Braided PVC Clear Hose
09.Copper Ferrule - Zinc Plated
10.Petzl Tandem Speed Pulley
Featured more
The Got Rope Cup
The Got Rope Cup
 $9.95  $7.95