I wish Mike, but not yet, Soon though <img src="/forums/images/graemlins/ignore.gif" alt="" />. Its a bass boat trailer that we are modifying to use on a 22' sailboat.
The second axle will help with the added forward weight.
I'm not going to be dealing with alot of weight about 2800lbs, I could get away with 1 axle but I like the dual setup better.

This is what we are going for.

A boat trailer is probably an exception. Most I've seen have the axle(s) much further back than what it would be for a car hauler. Adding the 2nd axle in front on a single axle boat trailer looks like it'd about right as a tandem for a car.

--Dan

Yeah I've got the axle placement pretty much down. I'm been copying others with the same type of boat and trailer.

I've been working on it some more, We've bought everything that we need to finish it.


Here is a price break down.
Its alot but nowhere near as much as a new tandem trailer. A trailer like the one we are building would be over $3,000 if bought. So when you think of it we are doing pretty good. All of the parts we are adding are brand new, the only thing left of the trailer is just the metal frame.
That saved us some bucks by using it instead of building from scratch.
When we are done this will be a brand new trailer

Trailer cost $180
(1) a-frame coupler $29.99
(2) u-bolt kits @ $16 ea. = $32.00
(1) jack wheel $20
(1) bull dog jack $29.99
(1) tandem axle hanger kit $39.99
(2) 3500lb trailer axles @ $169.99ea =$339.98
(2) pair leaf springs @$39.99 ea = $79.98
(1) wiring kit $13.99
(1) winch $12.99
(1) winch strap $9.99
(2) tandem fenders @ $69.99ea = $139.98
(4) tires/wheels @ $94.99ea = $379.96
(2) tail lights @ $9.99ea = $19.98
(1) center light $12.99
(2) marker lights @ $4.99ea = $9.98
Steel for bunk mounts $75
hardware (bolts) $10

total $1551.71 after tax.
Its alot, but cheaper than if someone else did the work.
Not too bad for a new custom made tandem axle trailer(heavy duty).

pics...

new coupler..

Nice work, but no spare? Or is it out of the way? I like how the other spare is mounted in the boat pic; nice and accessible.