Torklift Cannon

You mean that is not strong enough?

Yeh, but you had static load. Real world towing is all about dynamic loads and metal fatigue over time and many cycles.

bradw

For whatever it is worth- my F350 squats about 2" under 5000 lb camper weight.
Using it as a crane on picture above, the weight on the arm was squatting the truck all the way to axle bumpers and I had to put 4x4 under to gain lifting height.
Meaning a little bit more and I would lift front axle off the ground by applying weight on the stinger.
Never have seen any signs of stress on Ford hitch and I know metals.

Bedlam wrote:
Torklift's ratings are based on using the Ford OEM receiver. It may be a limitation of the receiver with that much leverage........

That was my concern. Ford doesn't publish any ratings for those OEM receiver hitches when used with an extension. I have no doubt the Cannon extension tube will handle what its rated for and I have no doubt TL performed some testing before they put these on the market.

Having said that, I removed the OEM hitch from our 2018 F350 and installed the 30k lb TL hitch. The TL hitch is massive as compared to the OEM hitch and weighs much more.

I'll be towing slightly more than 6,500 lbs on a 4' extension, so I would exceed the new Cannon rating anyway. I will be a lot more comfortable with the TL hitch and dual extension.

bradw

SidecarFlip wrote:


That, my friend, is a fugly statue.....:E

Swearing at Gods is not really advised.
Hermes can fly very fast to get you

Kayteg1 wrote:

BradW wrote:

Kayteg1 wrote:
I build that almost 2 years ago.
Cost of 48" of 3" tubing about $40, including cutting.

That was my plan, but after taking a good close look at the factory receiver hitch, I wasn't confident that it was robust enough for 7,000 lbs on a 4' extension. 7,000 lbs on 2' or 3,500 lbs on 4' seemed OK. It cost a lot more to go with the 30k lb Torklift receiver, but I'm glad I did.

bradw

I did some calculations and assuming older TL stinger was 2.5" tubing with 1/4" walls combined with 2" solid bar, the 3" tubing with 1/4" wall comes well stronger.
In construction it it cross section height what give it main strength.
Than my boat is less than 3000 lb with minimal tongue weight.
I am not worry.
Besides... I tested my receiver/stinger pretty good


Click For Full-Size Image.

That, my friend, is a fugly statue.....:E

Torklift's ratings are based on using the Ford OEM receiver. It may be a limitation of the receiver with that much leverage. Even if you fabricate your own, you now have a ballpark figure of what a single truss extension can safely handle.

Nice, I wonder how soon they will be available.

Interesting that the ratings are so different from what Curt offers

Curt
41" 5000 wd 7500
48" 4000 wd 6000

Torklift
42 3300 wd 6600
48 3000 wd 6000

Kayteg1 wrote:

BradW wrote:

Kayteg1 wrote:
I build that almost 2 years ago.
Cost of 48" of 3" tubing about $40, including cutting.

That was my plan, but after taking a good close look at the factory receiver hitch, I wasn't confident that it was robust enough for 7,000 lbs on a 4' extension. 7,000 lbs on 2' or 3,500 lbs on 4' seemed OK. It cost a lot more to go with the 30k lb Torklift receiver, but I'm glad I did.

bradw

I did some calculations and assuming older TL stinger was 2.5" tubing with 1/4" walls combined with 2" solid bar, the 3" tubing with 1/4" wall comes well stronger.
In construction it it cross section height what give it main strength.
Than my boat is less than 3000 lb with minimal tongue weight.


I am not worry.

I'm with you, I always prefer to fab things myself and as far as TL having a copyright/ patent, I doubt it. TL is not the only game in town, by a long shot.

BradW wrote:

Kayteg1 wrote:
I build that almost 2 years ago.
Cost of 48" of 3" tubing about $40, including cutting.

That was my plan, but after taking a good close look at the factory receiver hitch, I wasn't confident that it was robust enough for 7,000 lbs on a 4' extension. 7,000 lbs on 2' or 3,500 lbs on 4' seemed OK. It cost a lot more to go with the 30k lb Torklift receiver, but I'm glad I did.

bradw

I did some calculations and assuming older TL stinger was 2.5" tubing with 1/4" walls combined with 2" solid bar, the 3" tubing with 1/4" wall comes well stronger.
In construction it it cross section height what give it main strength.
Than my boat is less than 3000 lb with minimal tongue weight.
I am not worry.
Besides... I tested my receiver/stinger pretty good


Click For Full-Size Image.