My Opinion as to the basic requirements of a Trike.

The seat - this must be comfortable have sufficient space for a passenger and be mounted between 700 mm and 800 mm from the road.

Having the seat at this height not only gives good visibility front and rear it also keeps the rider away from the water and stones thrown up by the front wheel.

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The engine - this needs to be large enough to tow a trailer or trailer tent and have sufficient power to make the trike exhilarating to ride.

We all love V8`s but not everyone wants the fuel bill so a 1400 cc fuel injected engine is ideal.

Car engines are preferred as they are high toque low rev engines, whereas a lot of bike engines are high rev low torque and have very small flywheels.

Car engines generally cost a lot less to service, parts are available locally and local garages are conversant with them.

Ideally the engine, transmission and suspension should be rubber mounted to remove any vibration.

Car engine cooling systems are designed to stand in traffic as a trike sometimes has to. Whereas a bike can be kept on the move to help cool it.

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The transmission - reverse gear is essential and automatic transmissions make for an easy relaxing ride.

CVT transmissions are more economical than conventional automatics.

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The brakes - dual circuit servo assisted disc brakes all round are preferred linked to one pedal with the addition of a pressure proportioning valve.

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Fuel tank - must carry enough fuel for a minimum of 150 miles,

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Steering - the castor angle must be set so as to ensure the trike does not incur any steering wobble in a straight line but is still light and nimble through the bends. The steering geometry required for a Trike is totally different to the geometry required for a solo motorcycle.

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Weight distribution - if the engine is mounted behind the rear axle the front end becomes too light especially if towing so a lot of ballast needs to be added to the front end.

If the engine is mounted at the front it becomes very easy to lift a rear wheel on bends and the rear suspension is a lot more sensitive to the way the trike is loaded.

Mounting the engine in front of the rear axle gives ideal weight distribution and helps the rear suspension to work.

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Rear suspension - Hydrogas with internal damping is preferred as the suspension stiffness and ride height can be set with little effort or cost.

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