There have been a number of scam transactions attempted on the site recently – we strongly suggest that you use a third party, such as a bike shop or escrow company for all transactions not done in person.

Contact Adam
Richmond, Victoria, Australia
$ 2,700.00

Ultra unique, family tandem Onderwater XL bicycle for sale, made in Holland. The bike carries four people with ease, one adult, two kids who pedal, one kid who has a seat but no pedals. Kids age range is probably 3 or 4yrs up to about 9 yrs. Pedal setup works so that kids can coast while adult pedals, so the kids can't put drag on the pedalling. When kids pedal the whole family flies. Bike is strong and sturdy, and handles beautifully at speed, round corners, and over bumps when fully loaded. Nuvinci hub gears, Shimano rollerbrakes, front wheel Dynamo that powers the front and rear lights, keyed wheel lock, sturdy rack (for another kid!).

The bike was originally purchased new in 2014 from Please see link for more details, the specs are correct for the bike I'm selling. Extras include the third kids seat and foot platform.

Freshly serviced, come and inspect and test ride in Richmond, 3121.

I can arrange shipping if required at additional cost. As a guide, to send the bike fully assembled to Adelaide or Sydney metro is $375. Price to be confirmed with supply of shipping address.
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The TCA cannot guarantee the accuracy or authenticity of any ad placed on this website. Therefore, buyers should be mindful that internet-based transactions — long distance, or in person, have certain inherent risks. Buyers and Sellers are both at risk for theft by fraud and any face-to-face meetings also present risks related to theft as well as personal safety. Please take time to do some research about buying and selling from one of the many articles that you’ll find on line, such as one of these: (it applies to bikes also)

You may also want to think about the following (courtesy of Mark Livingood):

Ideally, most buyers and sellers prefer to find one another in close enough proximity to permit a face-to-face meeting, a physical inspection of the tandem and, of course, a test ride; perhaps even an extended test ride. Fortunately, at least in all my dealings with private sellers, buyers and tandem-specialty dealers or builders, long distance transactions have always been quite pleasant and ended up with no surprises. So, while there is some degree of risk, if you’re willing to trust your “gut” on a long distance transaction neither you nor the other party should end up being any worse for wear if everyone keeps their cards on the table throughout the transaction.

NOTE: A detailed sales contract should be drawn up for all long distance transactions. Language should be included that spells out all provisions regarding who has responsibility for the tandems shipment, under what conditions the buyer may decline to accept the tandem at the time of delivery and who will bear the responsibility for shipping costs. As an example, sales agreements should plainly state if the seller clearly mis-represented the condition or features of the tandem, or it was damaged in route, they bear the burden for a remedy subject to approval by the buyer. If the buyer simply changes their mind for any reason and no longer wants the tandem, they bear the burden for all shipping costs. In some cases, buyers and sellers may want to use a trusted, local bike shop as an agent for receiving and inspecting the tandem to protect their mutual interests.

The use of a third party escrow service may also aid your transaction.