I am purchasing a 27' Magnum Marine Sedan project and picking it up at the end of the month. It does not have a trailer, so I am renting one to bring it home. I want to set it on a cradle while I work on it. my plan is to build a cradle out of 8" C channel and 2 x 12 lumber. Doing the math the furthest apart I can make the bunks is 44" which seems fine to me, but I was wondering how far apart are the stringers in a twin engine Magnum sedan? I'd like to have the bunks directly under the stringers if possible. I am adding a pic of what I'm envisioning below, please let me know if I'm way off base or if there is anything else I should consider. I plan to keep the cradle under the rear of the hull, and use some 4x4 lumber under the keel up front if necessary. I want it stable and sturdy in my shop, as I will be removing and rebuilding the engines and outdrives as well as raising the drives and relocating the exhaust etc..



Obviously not to scale

The boat I'm getting:

cut your 2x12s on the angle to match the angle of the hull

I can rip them om my radial arm saw Thanks!

I made these dolly's just to move my 27 sport around easily in the "Mag port" .....cost me less than $100 to build!....I can move it anywhere in the Mag port (shop)
by myself.........it is so much better sitting on dolly's than a trailer if you want to move the boat in and out or side to side when doing work on the boat.

I like those, what was the weight rating on the casters? My boat is currently rigged w/ twin chrylers so I imagine it weighs upwards of 5000 Lbs

each caster is rated upwards of 3,000lbs..........no problem supporting your 5,000lbs.........each dolly can support in excess of 12,000 lbs
the caster do need a solid floor to roll upon (cement or black top) otherwise they will dig in !!

Where did you get the casters and the swivel brackets? The only casters theat HD that I've found are over 200$ a piece

Harbor Freight has a great selection of casters.
I saw Pete's (Scippy) in person and I'd give it a "10"!!
By the way Pete, how is the Magnum coming? I'd love to stop by and check it out!
Bob

I have used these casters from Tractor Supply [TSC] not a bad price [29.99] & good quality & 900 pound capacity. .
http://www.tractorsupply.com/en/stor...l?cm_vc=-10005

If you need a Polyurethane Plate Caster these are [39.99] each. If you build a set up like Pete's you will more than enuff capacity.
http://www.tractorsupply.com/en/stor...l?cm_vc=-10005