rickeieio Posted May 15, 2021 Report Share Posted May 15, 2021 So, today I got the ET hitch. Now that I have it sitting next to the truck, I can easily measure and see why my ideas won't work. And also see new possibilities. The conventional way to mount the hitch seems to be to add enough to the frame rails so the hitch can be slid in as far as practical. It seems that on a KW T-680, I could slide the hitch all the way to the rear shock towers, if there were not a pesky leveling valve in the way. Try as I might, I can't find a way to move the valve and keep good geometry on the link rod. Unless...what if I turned it 90 degrees and mount it to the front of the hitch, between the shock towers? If this works, I can remove all the cross member bracketry in the back, and replace it with a plate tying the two hitch support angles, thus also eliminating the need to lengthen the frame a paltry 4 inches. Tomorrow I put another set of eyes on it and see why it won't work. I'll take pics too. Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
Star Dreamer Posted May 15, 2021 Report Share Posted May 15, 2021 If all you have to extend the frame is 4" to keep the leveling valve in its original position, I think you can have the ET extend past the rear of the frame by that 4" without any issue except for mounting lights. Check with Jack Mayer or Henry Szmyt. Quote 2005 Freightliner Century S/T, Singled, Air ride ET Jr. hitch 2019 46'+ Dune Sport Man Cave custom 5th wheel toy hauler Owner of the 1978 Custom Van "Star Dreamer" which might be seen at a local car show near you! Check out http://www.hhrvresource.com/ for much more info on HDT's. Link to comment Share on other sites More sharing options...
GlennWest Posted May 15, 2021 Report Share Posted May 15, 2021 That 4" won't make a hill of beans difference. Still get all the bolts in needed. That what holds it. Now you might not like the looks. Wouldn't bother me. But that's me. Could still build bed to cover up it. Quote 2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1 Link to comment Share on other sites More sharing options...
rickeieio Posted May 15, 2021 Author Report Share Posted May 15, 2021 Without moving the leveling valve, I'd need to extend the frame well over a foot. I agree, the four inches doesn't bother me, other than it will make a little more work finishing out the rear of the bed. Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
Av8r3400 Posted May 15, 2021 Report Share Posted May 15, 2021 (edited) Jack moved my hitch back to install the bed on our truck, I believe having it cantilever out of the frame a small amount. Going to pick her up this week... Edited May 15, 2021 by Av8r3400 Quote Av8r34002012 Volvo VNL 730 D13 iShift & 2021 Grand Design Momentum 397TH I'd rather die trying to live - Than live trying not to die. -Leonard Perry Link to comment Share on other sites More sharing options...
noteven Posted May 15, 2021 Report Share Posted May 15, 2021 Rick I'm pretty sure you can mount the levelling valve however you need to as long as the arm has travel clearance to deflate the suspension. On the hitch frame could be fine. A new rod can be invented. Provide service access to it so it will never ever fail... Quote "Are we there yet?" asked no motorcycle rider, ever. Link to comment Share on other sites More sharing options...
rickeieio Posted May 16, 2021 Author Report Share Posted May 16, 2021 (edited) So, here's what I have to work with: [https://i.imgur.com/KJKSnjml.jpg The hitch is 34" long, so will extend 5" farther than the frame. I'll need to drill a new mounting hole in the supplied angle on each side. Edited May 16, 2021 by rickeieio Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
rickeieio Posted May 16, 2021 Author Report Share Posted May 16, 2021 [IMG]https://i.imgur.com/83qlWCEl.jpg[/IMG] Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
GeorgiaHybrid Posted May 16, 2021 Report Share Posted May 16, 2021 Rick, Shouldn't be a problem to rotate the valve 90 degrees and bolt it to the front frame on the hitch. The bottom plate on the hitch plus the hitch stiffening the bottom plate will more than make up for the removal of the two cross members. That plate acts like a diaphragm bracing plate. if you locate everything Correctly, you might not need to even modify the rod. Quote 2017 Kenworth T6802015 DRV 38RSSA Elite Suites2016 Smart Prime Link to comment Share on other sites More sharing options...
rickeieio Posted May 16, 2021 Author Report Share Posted May 16, 2021 (edited) On 5/16/2021 at 3:02 PM, GeorgiaHybrid said: if you locate everything Correctly, you might not need to even modify the rod. Got everything else up to the shock towers removed today. After much head scratching, I decided to fab up a simple bracket to relocate the valve independent of the hitch, just in case I might someday need to remove the hitch and still drive the truck. I did heat the link rod and give it a 90 degree twist. I really wanted to get it in place and a picture of it, but the paint wasn't dry. Some preliminary measuring leads me to believe one hole on each side of the frame will be nearly perfect for the support angles. Can I be so lucky? Edited May 18, 2021 by rickeieio Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
rickeieio Posted May 18, 2021 Author Report Share Posted May 18, 2021 (edited) Relocated leveling valve. https://i.imgur.com/s7cBHCql.jpg This picture posting thing is very inconsistent. I do EXACTLY the same thing and it works about 1 time out of 4. New support does double duty to replace the cross member I removed......or not. Edited May 18, 2021 by rickeieio Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
Darryl&Rita Posted May 18, 2021 Report Share Posted May 18, 2021 Just now, rickeieio said: Relocated leveling valve. Wrong link, Rick Quote I have been wrong before, I'll probably be wrong again. 2000 Kenworth T 2000 w/N-14 and 10 speed Gen1 Autoshift, deck built by Star Fabrication 2006 smart fourtwo cdi cabriolet 2007 32.5' Fleetwood QuantumPlease e-mail us here. Link to comment Share on other sites More sharing options...
rickeieio Posted May 18, 2021 Author Report Share Posted May 18, 2021 (edited) Edited May 18, 2021 by rickeieio Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
Brad NSW Posted May 18, 2021 Report Share Posted May 18, 2021 Rick, I cantilevered my hitch 4" past the frame. Still got all the bolts in the frame. I added a 4x4 piece of steel angle and bolted that to the overhanging part of the hitch. Welding would have been better but I don't weld, so bolts snugged the overhanging tail up and gave me extra piece of mind. Don't have any photos handy but can snap/send some, if you want. Quote 2010 Freightliner, DD15 Eaton Ultrashift, 2015 New Horizons 5th Wheel. Occupants - Dena/Brad/Hershey BLOG LINK Link to comment Share on other sites More sharing options...
rickeieio Posted May 19, 2021 Author Report Share Posted May 19, 2021 There's always something that crops up that will case you to stop and wonder if you've done something wrong, of if someone else has...... Out with the cross member and ET is ready to go in. But wait, the cross member is this wide: And the ET is this wide: So it seems there's 3/4" gap between the frame rails and the hitch. The holes in the hitch are very tight, no room for wiggle. So after consulting our resident metals guy (GeorgiaHybrid) and calling PopUp hitches, I need to cut out two 3/8" plates roughly the same size as the support angle to shim it out. Of course I have no 3/8" plate so I'll fetch some in the morning. Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
noteven Posted May 19, 2021 Report Share Posted May 19, 2021 Rick - a KW will have 16mm frame bolts in 17mm holes to allow the frame to have the flexibilities. The frame is drilled on mm dimensions. Quote "Are we there yet?" asked no motorcycle rider, ever. Link to comment Share on other sites More sharing options...
rickeieio Posted May 19, 2021 Author Report Share Posted May 19, 2021 8 hours ago, noteven said: Rick - a KW will have 16mm frame bolts in 17mm holes to allow the frame to have the flexibilities. The frame is drilled on mm dimensions. Yes, I've long wondered why truck manufacturers allow for this while the hitch builder made a point of making very precise holes so no movement. But, I'm not an engineer. Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
noteven Posted May 19, 2021 Report Share Posted May 19, 2021 10 minutes ago, rickeieio said: Yes, I've long wondered why truck manufacturers allow for this while the hitch builder made a point of making very precise holes so no movement. But, I'm not an engineer. 8 hours ago, noteven said: Rick - a KW will have 16mm frame bolts in 17mm holes to allow the frame to have the flexibilities. The frame is drilled on mm dimensions. I wasn't clear Rick - the frame holes are laid out in mm on center, as well as being drilled in mm dimensions. If you want to extend your frame with a couple chunks to support the hitch the Kenworth Body Builder Manual on the KW website has the correct procedure for preparing the splice and welding. It is 120,000psi heat treated material in whatever dimensions you measure. You can sometimes find frame pieces at up fitters - customers often buy a stock straight trucks and the up fitter cuts off frame to suit the body. Those 3 piece cross members are appreciated if you have to change one where you can't just slide it out the back... but they aren't "the cheapest" way to build Quote "Are we there yet?" asked no motorcycle rider, ever. Link to comment Share on other sites More sharing options...
rickeieio Posted May 19, 2021 Author Report Share Posted May 19, 2021 Understood. I don't need to extend the frame. The hitch will stick out the back by 4", so I will need to relocate the rear most hole. Now I need to decide whether to rent a mag drill. DW pointed out that drilling a bunch of 3/4" holes is hard work, in difficult positions. $60 to rent the drill v. a couple visits to the chiropractor......... Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
Darryl&Rita Posted May 19, 2021 Report Share Posted May 19, 2021 Mag drill, mag drill, mag drill. Louder for the kids in the back! MAG DRILL, MAG DRILL, MAG DRILL! The mag drill is a help, but the real magic is in the annular bits they use. Like butta. Quote I have been wrong before, I'll probably be wrong again. 2000 Kenworth T 2000 w/N-14 and 10 speed Gen1 Autoshift, deck built by Star Fabrication 2006 smart fourtwo cdi cabriolet 2007 32.5' Fleetwood QuantumPlease e-mail us here. Link to comment Share on other sites More sharing options...
noteven Posted May 19, 2021 Report Share Posted May 19, 2021 What Darryl said ^ Quote "Are we there yet?" asked no motorcycle rider, ever. Link to comment Share on other sites More sharing options...
rickeieio Posted May 19, 2021 Author Report Share Posted May 19, 2021 I just found out my brother, who lives in the old farm house at my shop, has an old Milwaukee mag drill, with a chuck. I'm hoping it will work........I don't know for sure, but I think it's a 1" chuck. Fingers crossed. Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
Steve from SoCal Posted May 19, 2021 Report Share Posted May 19, 2021 If it is like my Milwaukee mag drill it will weigh about 70 pounds. I use my crane to position the drill, if you have an engine hoist USE IT. My drill has a 3/4" Jacobs chuck, it will hold annular cutters. They are kind fragile, I use hole saws for most holes. I spot the holes with a 1/8~1/4 drill deep enough to register the pilot or bigger drill. 5/8 holes are at the min size range for either hole saw or annular cutter, a good cobalt twist drill is just fine for frame rails. Steve Quote 2005 Peterbilt 387-112 Baby Cat 9 speed U-shift 1996/2016 remod Teton Royal Atlanta 1996 Kentucky 48 single drop stacker garage project Pulls like a train, sounds like a plane....faster than a Cheetah sniffin cocaine. Link to comment Share on other sites More sharing options...
GeorgiaHybrid Posted May 21, 2021 Report Share Posted May 21, 2021 Also use plenty of oil or those annular cutters aren't going to last long and they will be slower cutting the holes. Quote 2017 Kenworth T6802015 DRV 38RSSA Elite Suites2016 Smart Prime Link to comment Share on other sites More sharing options...
Lance A Lott Posted May 21, 2021 Report Share Posted May 21, 2021 I mounted my gooseneck hitch with 5/8 bolts and I drilled them all with a regular drill motor I didn't realy notice and problems, but I did start at 1/8th and work my way up to 5/8ths. But I would have used a mag3 drillmif Imhad one. Quote Link to comment Share on other sites More sharing options...
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