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Bicycle Trailers from Harris Cyclery

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The Adams Trail-A-Bike!

Click here for replacement hitch units.

These "half-bicycle" trailercycles allow even a small child to
share the exercise and accomplishment of cycling with a parent.

If you are in range of West Newton, Massachusetts, you can come in for a test ride...but, be warned, after you do, your child will probably insist that you buy one!
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The Adams Hitch

Adams Trail-A-Bikes feature a large sturdy universal-joint hitch, which does not rely on the lead bike's seatpost as a bearing surface, as many lesser imitations do.

Please note that the 1998 and later Trail-A-Bikes use an improved, enlarged hitch coupling, which is not compatible with the older version.

Click here for replacement hitch units.

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Adams Folder Trail-A-Bike
  • An all new entry level model featuring Trail-A-Bike's clever folding frame design
  • A Patented top tube radius that fits most 26" and 700c wheeled bicycles
  • Junior sized contact points pedal, grips, handlebar and saddle for more comfort
  • Integrated chain ring protector for no mess and safer storage and transportation
  • Proven steel hitch with three shims to fit most bicycle seat posts
  • Permanent flag attachment
  • Limited lifetime warranty on frame
  • Weight limit = 85 lbs
The basic Adams Folder model features a single-speed freewheel.

Sorry, we no longer ship complete trailercycles, please drop by the shop.

Colors shown might not be current.

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Folding Your Adams Trail-a-Bike:

Folding your Adams Trail-a-bike
1. Flip the Quick Release
Folding your Adams Trail-a-bike
B. Remove the Seatpost
Folding your Adams Trail-a-bike
III. Fold the Frame
Folding your Adams Trail-a-bike
You're Done!
Folding your Adams Trail-a-bike

Safety

Many parents are fearful that their chilren may fall asleep and fall off. I have done some research on this, surveying readers of relevant internet newsgroups and the tandem@hobbes mailing list, to find out how real a problem this was.

Despite many reports of what were perceived as "close calls", nobody had actually heard of a single instance when a child had fallen asleep and fallen off of a kidback tandem or trailer cycle. Only a single occasion of falling off was reported, and this was the result of horseplay, rather than drowsieness.

Adams Hitch versions:

Adams Hitch Complete Adams 1st Knuckle

First Knuckle (1997 and earlier version)

Adams 1st Knuckle

The Adams hitch has been gradually improved over the years. The early versions are no longer available, so if you have an older Trail-a-Bike and want to buy a new bike receiver, you'll need to upgrade to the new, improved style (the new version is a good deal solider and stiffer than the older ones.)

To convert an older Trail-a-Bike, you need to replace the "knuckle" (the part with the hollow square hole) with the new version.

Telling the size of your square coupling:

The 1997 and earlier size was 12 mm (12.7 mm to be exact)on a side, new improved (1998 and later) version uses a 15 mm square. You don't need a micrometer to tell the difference, a penny will do the trick! If you can fit a penny into the square hole, it's the new 15 mm size.
Adams 15 mm hitch with penny
If your trailercycle uses the old 12 mm (1997 and earlier) version, you won't be able to fit the coin into the hole. You can upgrade to the current system by buying the parts listed below.

NOTE: The fastening nuts and bolts are not included and not available from Harris. Check your local hardware store.

If you have the following Need to Purchase following  
12mm horizontal pin

(1997 & Earlier)

15 mm-12mm Step Down Block
AD002

$18.95 buy button

DESCRIPTION
1st Knuckle for 15 mm horizontal hitch
AD003

$15.95 buy button

DESCRIPTION
Block sleeve hitch
AD001

$26.95 buy button

DESCRIPTION
15 mm Vertical pin

(1998)

1st Knuckle for 15 mm horizontal hitch
AD003

$15.95 buy button

DESCRIPTION
Block sleeve hitch
AD001

$26.95 buy button

Block sleeve hitch
DESCRIPTION
15 mm Horizontal pin

(1999 and later)

Block sleeve hitch
AD001

$26.95 buy button

DESCRIPTION
Replacement pinHitch Pin, Clevis Type
AD004

$7.95 buy button

DESCRIPTION
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If you're in Great Britain, you might check out: Bicycle Trailers

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We ship hard-to-find parts, tools and accessories all over the world

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