so what is the going rate for raising the TT by putting the springs on top of the axle? Guy that rewired my brakes told me he could do it for $400.00

The only hard part is welding on the new spring perches. That cost me $100 for 1/2 hour labor, and I had to take the trailer to the welding shop, couldn't find anyone mobile that would do it on site.The rest of it is just unbolting things, replacing anything that's really rusted, welding the perches, and bolting it all back together... Easily done in a driveway with simple tools.$400 sounds reasonable for a double axle... someone can spend a lot of time fighting rusted over-torqued fasteners.

You can buy an 'over/under' conversion kit for $61/axle ......bolt on --- no welding requiredDexter Over/under KitAnd while you're at it do a 'wet bolt' kit $69/axle ---Greaseable bolts, bronze bushings, steel shackle strapsWet Bolt Kit

I helped my son install the Dexter kit. He didn't have the proper jacks and tools so it took a while. Doing it myself I'm guessing 1.5 hours per axle. His was a single axle.

$400 isn't bad especially if you are not set up with the right tools. While doing it adding wet bolts is a great idea. I wouldn't do it without welded perches. I also added ezflex but not as important as wet bolts.

Wet bolts are $4 each and you need 4 for a single axle. Much cheaper to buy them separately than in a kit. I replaced my springs at the same time so didn't need bushings.

Flipping axle mounts | Good Sam Community

Ron3rd
Explorer III
Nov 01, 2017
Terryallan wrote:
so what is the going rate for raising the TT by putting the springs on top of the axle?

Guy that rewired my brakes told me he could do it for $400.00

Sounds like a very fair price if he does good work.
goducks10
Explorer
Oct 31, 2017
Downwindtracker2 wrote:
Be aware, an axel flip will raise the center of gravity. More Sway.

The majority of TT/5ers have the axles under the springs. In theory you'd think they'd all sway if using that logic. Most sway problems are from either a poorly loaded unbalanced load, undersized tow vehicle or speed.
azrving
Explorer
Oct 31, 2017
Downwindtracker2 wrote:
Be aware, an axel flip will raise the center of gravity. More Sway.

Anything that raises the rig raises the center of gravity. Moving the spring down a hole if available is a first step. Second step may be an axle alignment kit which gives 2 inch or so. next step is flipping axle. Next step is flipping axle AND building a sub frame. You could leave the sprigs on top and build an even thicker sub frame but it could be deep and even look odd. Keeping the springs under the axle is good if a person can get enough lift without making longer shackles.

I would be most cautious about adding shackle length when you consider the tremendous twisting forces. The longer the shackles, the more chance of breaking something.
Downwindtracke1
Explorer
Oct 31, 2017
Be aware, an axel flip will raise the center of gravity. More Sway.
JCR-1
Explorer
Oct 31, 2017
arkie guide wrote:
I do mine different - if i want to raise the height of my T.T. - I buy metal plate at 3/8 x 4 bx 8. bolt them to the existing spring hangers and bolt the spring to the new plate. Raise it 4 ;' are more with no problems.No it does not add swing are sag to the trailer.

I would like to see how you did that. Can you send a link to a picture? I cannot get photos on this page .Thx
LVJJJ
Explorer
Oct 31, 2017
thanx
azrving
Explorer
Oct 28, 2017
LVJJJ wrote:
wet bolts?

Greaseable bolts that replace oem bolts. The plastic spring eye bushings are also replaced using bronze bushings. This example also includes the extra thick hanger brackets which make for a very rigid and tough upgrade.
LVJJJ
Explorer
Oct 28, 2017
wet bolts?
srd1941
Explorer
Oct 28, 2017
I did it to my 89 Nomad. Around $50.00 for the perches, removed the axle, took it to a friend who welded it for me then I reinstalled it. Major difference. Before the swap the dump valves were too low to dump at my home dump station.
Stan
Huntindog
Explorer
Oct 28, 2017
arkie guide wrote:
I do mine different - if i want to raise the height of my T.T. - I buy metal plate at 3/8 x 4 bx 8. bolt them to the existing spring hangers and bolt the spring to the new plate. Raise it 4 ;' are more with no problems.No it does not add swing are sag to the trailer.
Keep a close eye on the spring hangers. They have been known to fatigue and break. On my previous TT, I pulled into camp and had trouble backing up. It was like I had no control over the TT.

I got out frustrated, and saw why. I had 3 broken spring hangers! They the back ones on both sides, and one center one. It towed OK going forward as everything stayed straight. Backing up and the axles were going every which way.
I had my brother and wife run home (about 140 miles) and bring back my welder, jacks and stands, while I started prepping for the field repair. I sure was glad to have generator. A couple of days, and I had it back together. I don't want to ever do the again.

I mention this because it sounds like your plates may put additional stress on the hangers.