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singling question


GlennWest

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I have found a 630 with a 230 wheelbase. If I get it I intent to single to front axle location. I am aware the driveshaft yoke has to be changed. Is the length good? I hear of new driveshafts being made. Why if just yoke need changing?

2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1

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W/o the power divider, shaft needs to be LONGER. Note that is a Metric tube, too. If you move the rear axle fwd, you "should" have it aligned. There are shims on the nose of the springs. Do you feel lucky?

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If you haven't watched the video from Greg Shields about moving an axle and the things that should be done to the drive shaft, you should. RV Haulers Videos.

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Yes, it's rather strait forward. We once did this this with our race cars. Didn't have a lathe but ours always turned out good. Been welding all my life and making joints straight. And with a tig rig if it comes out with run out I can draw it back straight.

2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1

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Thanks but I know how to align a axle. The springs are the same, front and rear, on an 05, right?

No they are not. On the Gen I's they are the same but early Gen II's (starting '04) they are different. Do not use the rear Z springs when moving that axle forward. Using the rear springs in the power divider position will cause the pinion angle to be >10 degrees up.

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post-12482-0-42944700-1441160418_thumb.jpg

300.JPG.c2a50e50210ede7534c4c440c7f9aa80.JPG

Randy, Nancy and Oscar

"The Great White" - 2004 Volvo VNL670, D12, 10-speed, converted to single axle pulling a Keystone Cambridge 5th wheel, 40', 4 slides and about 19,000# with empty tanks.

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Can't seem to get this right tonight. Posting doesn't want to work with above attachment or thumbnail. Anyway, IMHO, the most important part is having a pro shop build the drive shaft and balance it as well. The attachment (above, I think) is the bill for the drive shaft.

300.JPG.c2a50e50210ede7534c4c440c7f9aa80.JPG

Randy, Nancy and Oscar

"The Great White" - 2004 Volvo VNL670, D12, 10-speed, converted to single axle pulling a Keystone Cambridge 5th wheel, 40', 4 slides and about 19,000# with empty tanks.

ARS - WB4BZX, Electrical Engineer, Master Electrician, D.Ed., Professor Emeritus - Happily Retired!

 

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I will have to do driveshaft myself. I may scrap it and pay someone later but I weld for a living and always making straight joints. Can't see paying for this.

Be careful, Glenn. The deal is not just the welding - trueness can only be accomplished on a lathe. Balancing is important. Imbalance can ruin bearings in diff and u-joint costing much more later.

300.JPG.c2a50e50210ede7534c4c440c7f9aa80.JPG

Randy, Nancy and Oscar

"The Great White" - 2004 Volvo VNL670, D12, 10-speed, converted to single axle pulling a Keystone Cambridge 5th wheel, 40', 4 slides and about 19,000# with empty tanks.

ARS - WB4BZX, Electrical Engineer, Master Electrician, D.Ed., Professor Emeritus - Happily Retired!

 

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Not sure about the stock driveline you have but often to the naked eye it looks like the u-joint eyes are indexed zero-zero but often they are indexed slightly offset so that the joints do not toggle high or low at the exact moment during a rotation cycle.

 

Once in a while our local balance shop is called in to balance a straight zero-zero index driveline and it can't be balanced because it is a joint-toggle condition not a balance problem.

 

Drive lines can be simple.......and.......not so simple.......

 

In my abused childhood we had too many drive lines on too many log trucks and washboard roads would hammer the slip-sleeves hard so we had to install new slip-sleeves fairly often so it is important to look hard at the original drive line configuration before waking it apart........once you cobble one together wrong it gets ugly fast........(don't ask......I won't tell)......... Truck drive lines have high mass and they can be a pain when they are........a pain.......

 

Drive on..........(Drive line.......smooth....)

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trueness can only be accomplished on a lathe

You can with a pair if "V" blocks and dial indicators, but for the reasonable cost and balancing, I think it would make sense to farm this one out, even at the low RPM HDT engines turn, the diameter squares the out of balance forces.

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Glenn,

I have a 2004 630 singled to the front position. My WB is now 218". I left the frame the original length so I have a pretty big bed and lots of storage under it. I had it done in Canada before I brought it home so I do not know what they did for sure. What axle is on the truck. I carry a Smart on mine but I have the 14.6K axle so I have no weight problems.

 

Brad

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Hadn't found one with a 14k front axle. If I don't soon get some time off it will be sold though. Thought I would be off now but got rof Sunday and got call Tuesday to go to work.

2003 Teton Grand Freedom towed with 2006 Freightliner Century 120 across the beautiful USA welding pipe.https://photos.app.goo.gl/O32ZjgzSzgK7LAyt1

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Thanks. Most of the old posts on singling is gone. Maybe a sticky in order?

Stickies won't protect a pruning of older posts. That is why pertinent information is moved into the resource guide.

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Mark & Dale
Joey - 2016 Bounder 33C Tige - 2006 40' Travel Supreme
Sparky III - 2021 Mustang Mach-e, off the the Road since 2019
Useful HDT Truck, Trailer, and Full-timing Info at
www.dmbruss.com

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Thanks. Most of the old posts on singling is gone. Maybe a sticky in order?

Just a few HDT Singling posts:

Post 1

Post 2

Post 3

Post 4

Post 5

Post 6

Post 7

Post 8

Post 9

Post 10

Post 11

Post 12

Post 13

Please click for Emails instead of PM
Mark & Dale
Joey - 2016 Bounder 33C Tige - 2006 40' Travel Supreme
Sparky III - 2021 Mustang Mach-e, off the the Road since 2019
Useful HDT Truck, Trailer, and Full-timing Info at
www.dmbruss.com

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