Motorised boats

What 4-stroke types of motors and their weights are suited for GRABNER boats?

You will find an online  table with details of motor power and maximum weight limits for each individual GRABNER boat with respective description and label.   

The weights of most used motors are:

ProducerMotors up to 17 kg
Kayaks and canoes with outrigger

Motors up to 30 kg SPEED, HAPPY CAT

Motors up to 45 kg
RANGER + SL
Motors up to 75 kg
HOBBY
HPkgHPkgHPkgHPkg
Honda2,31352710422046,5
Mercury/Mariner2,5/3,3176269,9382571
Selva2,5156279,9402051,7
Suzuki2,51362515442569
Tohatsu--5269,8372571,5
Yamaha2,51742215452562

Are short- or long shaft motors intended for use with GRABNER boats?

For all models (except HAPPY CAT + ADVENTURE) the ordinary short shaft  of 38 cm shaft length is recommended!  

For  HAPPY CAT + ADVENTURE with outrigger: long shaft motor

I have an outboard motor and wish to test it with a RANGER + HOBBY. Is that possible?

Yes – at the GRABNER boat test events!

Bring the motor with you to the test compound.

What are the performance properties of the new HOBBY used at sea – compared to a solid bottom -keel boat?

When using the Hobby at see – in particular when motorised over 5 Hp, a floor panel is recommended to stiffen the boat and to prevent the boat from length-directional  and crosswise torsion. Hard wood wedges at the sides prevent the floor panels to move against each-other, to stiffen the boats side tubes and bottom. Length axial stability stiffens to a point comparable to that of a boat with inflatable keel or with detachable keel
Using stronger motor power, i.e. in heavy seas, the floor panels to some extent counter balance the waves slamming effect. A boat with a rigid solid bottom though offers even greater stiffness, because it permits no flexing movement at all.

As far as directional stability is concerned, the new corrugated bottom of the Hobby provides very good course stability. With a total of 7 lengthwise appointed corrugations the boat has excellent course steering responding well  and without problem even to narrow radius course changes. There is no comparison to boats with a totally flat bottom and no course supporting profile at all.

Having said that, however note,  that  boats with a solid hull bottom offer somewhat better directional stability. That in particular, when motor power exceeds 25 Hp. In rough water that certainly is advantageous.

A boat buyer has to weigh up, if he:

intends to buy a boat trailer for transporting a rather heavier boat, to pay a higher price in order to have slightly better rough water performance properties.

If low weight, small pack volume and easy transportability is paramount plus option of transport by aeroplane,  easy assembly, greater safety by way of greater air volume, high buoyancy, and last not least a more favourable price, then the Hobby is precisely the right choice. 

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