Just bear in mind To make something reliable in the long run , adding more Material , like thicker tube wall , 1017 steel will cost less
than using an expensive alloy , say 4130, which will allow a thinner tube wall with same strength..
But this category of Trike is not one to sell well at a $2000+ which is about what one will cost to add Rear differentials to power both wheels, etc .
It has been done in some 'Delta' trikes .. The typical recumbent trikes are 'tadpole' they have 2 steered wheels 1 driven wheel ..
Performance riders accept the Higher prices of the more expensive Machines.
The British have Built a Competition around a custom made Light weight Upright trikes , but they to are 1 wheel driven .. Its part of the technique challenge
To get around the course first, with fastest Lap time , as everyone else has the same kind of Rig.
Last edited by fietsbob; 04-12-15 at 11:19 AM.