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Dave Catron (Cruiser112)
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Username: Cruiser112

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Registered: 1-2008
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Posted on Sunday, January 20, 2008 - 10:36 pm:   

I have realized my dream of owning a scenicruiser, now to start to convert it. I want to lower the pass. side floor. The AC and heat lines are no problem, but I keep hearing that the plywood floor is structural to the bus. I can't see how lowering the floor can hurt the unibody. Can anyone fill me in on the potential problems and solutions to floor lowering. Thanks
Jeffrey Smith (Greenhornet)
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Post Number: 100
Registered: 12-2006
Posted From: 198.136.32.74

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Posted on Tuesday, January 22, 2008 - 8:11 am:   

Welcome aboard. I am WAY jealous, congrats on yer scenic! Sure someone will pipe up soon with more detailed info, but it seems the wood flooring will add some stability to the structure once it is fastened in place. Pulling it up should not be a problem. I would weld in the lower floor supports where I want them before cuttin gthe old ones out, to prevent any chance of sagging or twisting. We need pictures ya know?!
Kyle Brandt (Kyle4501)
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Username: Kyle4501

Post Number: 391
Registered: 9-2004
Posted From: 65.23.106.193

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Posted on Monday, January 28, 2008 - 1:09 pm:   

you can't lower the floor
you can't raise the roof
you can't find parts


LOL, now that that's been said . . . .
You may as well admit defeat & give her to me. :-)

No? Good, nice to have friends as interested in these as I am.

Study the structure & make your modifications in keeping with the original structure.

The plywood is structural in shear, so be sure to secure it accordingly.
FAST FRED (Fast_fred)
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Posted From: 66.90.229.135

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Posted on Tuesday, January 29, 2008 - 6:28 am:   

I want to lower the pass. side floor.

Would be only a bit longer and lowering BOTH sides may have a more useful result.

Only time I saw it done right,was on a unit owned by the master chief instructor at Great Lakes, took almost a year!! with AV tin knocker students as cheapo (but highly skilled)labor .

It is a very long and complex modification with MAJOR structural elements.
FF
Kyle Brandt (Kyle4501)
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Post Number: 392
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Posted on Tuesday, January 29, 2008 - 11:32 am:   

If lowering the drive side, you will need to deal with the shifter linkage - just one more PITA (And there is the corresponding loss of bay space.)

IF you are just looking for a wider aisle, then that shouldn't be too big of an impact on the overall structure if you do it in keeping with what's there.
john w. roan (Chessie4905)
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Username: Chessie4905

Post Number: 856
Registered: 10-2003
Posted From: 71.58.48.5

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Posted on Tuesday, January 29, 2008 - 5:39 pm:   

Would it be easier to modify a 4905 to look like a scenic cruiser:-) As rare as Scenics are getting, if you attempt this PLEASE finish it. Many times people attempt major changes, lose interest halfway through the job because they didn't realize how much work it was, run out of money, job change, etc and the otherwise good coach ends up getting scrapped. If you do attempt this, evenly support the body in several places along each side and completely level supported body to avoid any kind of structual deformation issues during the process. Remember that some supports may settle over time if support surface is soil, sand or macaddam.You can check and correct occasionally if needed.Provide a wide surface under each support. Concrete floor would be desireable, but most of us don't have that luxury.This could be setting for quite a while till you get it done. It should be really nice if you accomplish it. Fred is right, do both sides if you attempt this. You'll want to replace the flooring with premium quality marine plywood with multiply. I believe that it could be more than an inch thick.They use a special wide, thin headed bolt on many coaches to attach the flooring to the body; you'll probably have to burn the old ones out with a torch if they are rusted bad. Fred can probably help you with sources of this plywood. Someone else here probably knows where you can obtain those bolts, if that is what is used.Good Luck
john w. roan (Chessie4905)
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Username: Chessie4905

Post Number: 857
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Posted on Tuesday, January 29, 2008 - 5:40 pm:   

Would it be easier to modify a 4905 to look like a scenic cruiser:-) As rare as Scenics are getting, if you attempt this PLEASE finish it. Many times people attempt major changes, lose interest halfway through the job because they didn't realize how much work it was, run out of money, job change, etc and the otherwise good coach ends up getting scrapped. If you do attempt this, evenly support the body in several places along each side and completely level supported body to avoid any kind of structual deformation issues during the process. Remember that some supports may settle over time if support surface is soil, sand or macaddam.Provide a wide surface under each support. Concrete floor would be desireable, but most of us don't have that luxury.This could be setting for quite a while till you get it done. It should be really nice if you accomplish it. Fred is right, do both sides if you attempt this. You'll want to replace the flooring with premium quality marine plywood with multiply. I believe that it may be more than an inch thick. Fred can probably help you with sources of this plywood.Good Luck
JR Lynch (Njt5047)
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Post Number: 217
Registered: 7-2006
Posted From: 69.132.233.230

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Posted on Tuesday, January 29, 2008 - 10:41 pm:   

I don't know Bo about a Scenic Cruiser, but, you can get around the shift linkage interference by going to an automatic transmission.
That would make a much nicer RV. Could even go with a DDEC 8V92 and have a really upscale power train. Would be almost bolt-in change.
Kyle can explain how this could be done!?
BTW, why lower only one side? Seems as though that would tend to 'rack' the bus when stresses are induced. Odd dynamics at the least.
While we're doing Scenics, who owns the stretched red scenic that visits Arcadia?
Dave, you definitely should see that one!
Gary probably has pix posted on his 'converter 101' album site.
JR
Kyle Brandt (Kyle4501)
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Username: Kyle4501

Post Number: 393
Registered: 9-2004
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Posted on Tuesday, January 29, 2008 - 11:38 pm:   

The Red one is Pat McNeil's. He basically built a whole new frame when he stretched & raised the roof. The lower siding is polished stainless.

The reason to lower one side only goes back to needs based on desired floor plan.

Why limit yourself to the 8v92? Almost any 4-stroke will fit & it is a T-drive with a long driveshaft & ~12 inches from the crankshaft pulley to the bumper! Tons of room back there :-)

Oh, the turn radius is 42 ft.
So they easily fit in the driveway.
john w. roan (Chessie4905)
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Posted on Wednesday, January 30, 2008 - 6:20 pm:   

Why limit yourself to an 8-92......why not put in a 12V92? Screw the wimpy 4 strokes! :-)
Jeffrey Smith (Greenhornet)
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Posted on Wednesday, January 30, 2008 - 8:58 pm:   

"Oh, the turn radius is 42 ft.
So they easily fit in the driveway."
Kyle

Yeah! Mine!
You have too many!
Kyle Brandt (Kyle4501)
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Username: Kyle4501

Post Number: 394
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Posted on Friday, February 01, 2008 - 12:55 pm:   

There ain't no such thing as too many Scenicruisers. I'm currently working on getting the 5th one home.

If 'Jay' will ever follow up & call the guy he told me about, AND IF it works out, I'll drive #6 home.

Then there is another without an engine that may pose possibilities . . .

So far, so good. Now if only I can get one that actually runs. . . .

If you're not picky, it is easy to own one. It just takes time & $$$.
john w. roan (Chessie4905)
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Posted on Friday, February 01, 2008 - 4:00 pm:   

Hey! let's get that grass mowed. We don't want to have to turn you into the county weed control Police.
Kyle Brandt (Kyle4501)
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Username: Kyle4501

Post Number: 394
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Posted on Saturday, February 09, 2008 - 9:34 pm:   

That's already been done. Thanks to a Hoyt Axton fan that works for the county, I have a little more understanding concerning code violations. :-)
john w. roan (Chessie4905)
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Posted on Saturday, February 09, 2008 - 9:55 pm:   

On a very quiet day, can you here them talking? What do they say?..... Hey! you just cut me off! #@**%#@ or Man! I hate those Eagles when we get behind them on a hill and can't pass. or MCI???? they call that a bus? Bwahahaha!
Kyle Brandt (Kyle4501)
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Post Number: 395
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Posted on Saturday, February 09, 2008 - 10:54 pm:   

Man, retirement is great! nothing to do & all day to do it!

& on top of that, we're still loved & the objects of desire.
George M. Todd (George_mc6)
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Posted on Sunday, February 10, 2008 - 11:44 am:   

Kyle,
If you're serious, I know where there are two more. In the high desert, so no rust, and from a 1/4 mi away, they look pretty complete.
George
sylverstone (Sylverstone_pd4501864)
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Posted From: 208.64.243.73

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Posted on Monday, March 10, 2008 - 1:55 pm:   

if anyone has any useful pictures of scenics with lowered floors, i'd love to see how other people have done this.

on most scenic conversions, the floor is left alone because it is part of what keeps the bus square.

on the scenic, the floor that isn't the center aisle is too high for me to comfortably just raise the center aisle, so i need to drop the floor, or live with the center aisle. (not out of the question, it's not that big of a deal unless you absolutely have to have a side aisle coach, which i do not)

if a floor drop is done, it's usually only the passenger side, because doing the drivers side requires moving air tanks and the shift linkage, which, if you are keeping the original engine and transmission, is a huge pain.

as many of you know, i'm in the design stages on mine, and the goal is a series 60 with a 9/10/13 speed eaton autoshift.

at the moment, i'm seriously considering making the bus mid engine and tandem drive like a crown. (in essence, shoving the entire drivetrain from a modern class 8 truck under it)

this would of course give me the original engine compartment as a garage for a small car, among other things.

dry sump parts for a series 60 are definitely a "build it yourself" kind of thing :-)

-dd
Tom Caffrey (Pvcces)
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Posted on Monday, March 10, 2008 - 9:47 pm:   

-dd, I've seen several successful 4106 roof raises, but the only case that I know of of somebody lowering the floors in a 4501 was a failure of the upper cabin.

The skin split in several places; the owner doubled the skin to stop it from spreading. The coach hasn't moved in some time.

I would think that it would be a bit safer to raise the roof than lower the floor.

For what it's worth.

Tom Caffrey PD4106-2576
Suncatcher
Ketchikan, Alaska
sylverstone (Sylverstone_pd4501864)
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Posted on Monday, March 10, 2008 - 11:55 pm:   

but it looks so ugly... :/
(sorry, pat's cruiser is sweet, but the lines aren't to my tastes)
... unless you have a suggestion on that?
-dd
Kyle Brandt (Kyle4501)
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Posted on Tuesday, March 11, 2008 - 12:31 pm:   

Raising the roof will ruin the lines of a 4501. If you're gonna go to that kind of trouble, you might be better off starting with a Crown :-)

I've seen the floors lowered both ways - right & wrong. If you have a good sense for how the structure works & can understand monoque structures why GM did it the way they did, then you should be able to lower the floor with no major problems.

HOWEVER, if you don't have that sense, you will probably make a huge mess of the bus.

I saw one where the owner was so proud of the fact he removed all the 'un-necessary' structure when he converted his. The interior was as nice as you will ever find, but, man oh man, did that bus ever squeak & rattle!

On 011, someone started lowering the floors in the WRONG way, it is a mess.

I believe Pat McNeil lowered his floors, raised the roof & stretched the length to 45feet! & it ain't broke in half yet.

Bill Dumas lowered the floor in his ~15 years ago, Frank Mooney has it now & as far as I know, it is running strong with no problems.

So it can be done sucessfully, problem is that it is easier to do it wrong :-(
sylverstone (Sylverstone_pd4501864)
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Posted on Wednesday, March 12, 2008 - 12:41 am:   

does anyone have any pictures of this kind of work?
both the right way and the wrong way?

i'm trying to compile a lot of this information before it's lost, ya know?
-dd
Kyle Brandt (Kyle4501)
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Post Number: 399
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Posted on Wednesday, March 12, 2008 - 8:08 am:   

Bus Conversion Magazine February 1999 has an article on the 4501 Bill Dumas converted

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