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  • KyleWickman
    replied
    Video tape it.

    Leave a comment:


  • dano8696
    replied
    anyone have any updates what the outcome of the town meeting was?

    Leave a comment:


  • osh599
    replied
    ALF Problems

    We purchased an ALF 75' Telesqurt in 2003. It has a 1500 Waterous mid-ship pump. Soon after taking delivery, we started to notice a "bounce" in the front end of the truck.

    We had the driveline replaced since it was thought that it was out of balance - that didn't cure the problem.

    Next idea was that a rim on one of the steer tires was bent - nope that wasn't the problem either.

    Next was to have the transmission and engine checked while driving - these two test didn't reveal anything substantial.

    Around 20 - 40 mph, the front end starts to "bounce" and while I was out with the local Detroit Diesel tech, we had it "bouncing" so bad that I swear the front end jumped off the ground.

    ALF states that there is no problem with the truck - typical response from a factory.

    Our longtime Pierce sales rep who has been repairing fire trucks for the past 20 yrs stated that the problem is "frame flexing". Our chassis has no reinforcements due to the length of the truck (220" WB). We have a 1994 Pierce Dash with a 198" WB and the frame is doubled back to the duals and we don't experience this "bounce".

    Seems as though we can not convince the good people at ALF that this is or could be the problem. If this is the problem, I'm not sure what they would do to correct the problem or do anything at all for that matter.

    http://www.americanlafrance.com/inte...=21&nd=1&x=380
    If the above link worked, you will see our truck.

    Leave a comment:


  • ctxffman
    replied
    >"And they are doing this only after the stories showed up on the local news, newspapers, here and other internet forums."

    and they don't want it replaced with a Pierce.

    But the damage has been done to ALF.

    Good Luck!!!

    Leave a comment:


  • tomwnh
    replied
    Not the throttle bounce theory

    I know anyone from ALF would love to make this a driver issue but this is very much not a throttle problem. This truck has been driven by many people and it does it not matter how you have the seat positioned, full up or full down, foot plasted to the side of the dog house and the throttle looked at over and over. If it was just driver error then ALF would not be sending a flat bed to take it back to the factory to see if they can find out what is wrong with it. And they are doing this only after the stories showed up on the local news, newspapers, here and other internet forums. The Chief has been trying for over a year to get them to address this issue.

    Leave a comment:


  • canuck1
    replied
    throttle

    I'm down with the Throttle bounce theory.
    I wonder if the department or dealer has investigated that possibility. If it is throttle bounce, Lifting your foot off the throttle for a split second will make it all go away. The combination of a rough road, an air ride driver's seat, and not having the heel of your boot on the floor can result in the "bounce" - leave your foot on the throttle after sensing the bounce - and go for a bumpy ride.

    That's my guess.

    Leave a comment:


  • donethat
    replied
    Flex-e-Flier

    It looks like a way too flexible frame and a harmonic being set up by a combination of the road surface frequency, the spring rate of the tires, front and rear suspension spring rate and the shock dampening. Maybe some throttle bounce thrown in.

    Years ago we had a snorkle aerial that would bounce you out of the drivers seat if you kept the speed constant at about 35 mile an hour. The chassis manufactuer, Hendrickson (now gone) changed the front tires from a Goodyear cement mixer type front tire to a Michelin Pilote type tire and about 90% of it went away. By changing to a different type of tire it changed the spring rate of the front suspension system and changed the frequency of the harmonics.

    Leave a comment:


  • MurphysFireKC
    replied
    Originally posted by IronsMan53 View Post
    Do any of you guys think that the pulsations from throttle harmonics could be causing this chassis flexing? From the video the rig doesn't look like it is going all that fast. I've experienced it around 30 MPH. And once the throttle harmonics set in the pulsations do get pretty rough until you let off of the throttle. I know from experience. I wonder if someone could tell us if the engine is pulsing while the rig is flexing?

    That's a great observation. I have had that happen many times to me in our E One 1000 gal pumper tanker, it's a long wheel base I believe Hurricane chassis. It responds like that.
    Last edited by MurphysFireKC; 01-17-2007, 10:29 AM.

    Leave a comment:


  • IronsMan53
    replied
    Do any of you guys think that the pulsations from throttle harmonics could be causing this chassis flexing? From the video the rig doesn't look like it is going all that fast. I've experienced it around 30 MPH. And once the throttle harmonics set in the pulsations do get pretty rough until you let off of the throttle. I know from experience. I wonder if someone could tell us if the engine is pulsing while the rig is flexing?

    Leave a comment:


  • Rescue101
    replied
    Basing on my knowledge of HEAVY chassis,this rig acts the same as our medium wheelbase heavy wrecker only exaggerated.With a heavy load on the underlift you'll get a light "hammering"with ours at just about 35mph,goes away either side of that.You can also get this condition with a dump truck when the chassis is too short or the centerpoint of the rears is too far ahead.The underlift shifts a lot of weight to the rear and unloads the front. Not knowing what this ladder has for suspension or centerpoint I can't speculate further.However,ten years of wrenching in heavy truck would lead me to believe this problem is deeper than just springs and shocks.Waaay too much flexing going on.Be interesting to see if anyone ever figures it out.Looks like Valleybreeze is looking for a key change.Fixes all known automotive problems.Either way it's not a vehicle I could put a lot of faith in,given that it's a new EMERGENCY vehicle. T.C.

    Leave a comment:


  • PureAdrenalin
    replied
    Originally posted by Rescue101 View Post
    Tomcat,by chance you know who's suspension is under the rear? And the issue with this rig goes beyond springing/damper valving.Watch the video carefully and see the cab/to rear body movement.That's a lot more than just a suspension issue.Something(like maybe wheelbase)is bad wrong here.Glad it's not mine. T.C.
    Well, going on video evidence only, it screams suspension problem. I've spent a fair amount of time in suspension setups, albeit, in a smaller and lighter vehicle.

    Leave a comment:


  • skipatrol8
    replied
    The video

    It can be found here (atleast partially) by scrolling down a little bit. You do not need to register. valleybreeze.com

    Also--more info from another forum:

    QUOTE/ Post # 1: Albion Rhode Island Fire Departments 2002 ALF Eagle Ladder Truck "Shake, Rattle and Roll" issue has forced its Department to look into taking legal action against American LaFrance as it pertains to Ladder 20. The issues, which according to the Cheif of the Albion RI Fire District, has been looked into by officials and engineers of American LaFrance on at least 2 separate times, without relief. Apparently the rig Shakes and Rattles once the apparatus reaches speeds between 25 and 45 MPH. The Fire District is now looking into purchasing a New Pierce Arrow Ladder Truck and Pierce is willing to take the ALF Rig in as a trade in. Go the following Web Site and then click on where it says "Albion Fire Truck Video" to see for yourselfs what their complaint is all about. http://www.valleybreeze.com/
    NOTICE
    Albion Fire District
    Special Taxpayers Meeting
    Monday, January 22, 2007 at 6:00 pm
    The meeting will be held in the apparatus bay
    Albion Fire Station
    38 School Street
    Albion Rhode Island

    The purpose of the meeting is to discuss and vote to replace Ladder 20 as well as a vote to take legal action against the American LaFrance Corporation. Registered voters in the Town of Lincoln residing in the District of Albion are invited to attend. Christine A. Morrissette
    District Clerk
    District Financial Officer

    Post # 4: Sounds like a drivetrain issue. Probably an unbalanced drive shaft. I should read more into it , and wonder if the unit has a pump , and if it does what make and model the pump is. That to me sounds too simple, but with the speed being a factor they have already rebalanced the tires and checked the rims. (I hope) The driveshafts would be the next to check , but can remain a problem if the correct shafts are not used in conjuction with the correct pump. The next area to look into would be the rear. Other than not driving it that would be my angle of approach, but I also question the axle weights and overall truck length and wheelbase. Too light a rear and trying to compensate with a heavy front will give you "rock and roll" . Like I said , I have not looked into it any further than the original post. Has anyone tried to seperate road speed and RPM of the drivetrain?

    Post #5: Just saw the video. The truck is short, high and is fighting itself. I would love to see a spec on the unit , but watching the video( and the clarity is not that great) I have to go back to the part of my post that stated the axles are too light in the rear and they tried to compensate with a heavy front axle. The rears are throwing the weight to the front axle and the front is throwing it back to the rears.

    Re: Albion Rhode Island Ladder Truck Issue
    « Reply #1 on: January 12, 2007, 07:22:57 AM »

    I saw the video and man that is a major problem. It looks like a combination of a chassis and suspension problem. Going down the road, that chassis looks like its bending, I wonder if it could be torque issues with the transmission. Definately need to see all the specs on this one so Albion didn't over look something hopefully and I really think they got hosed. When we went to bid on our truck we looked at ALF since we had a 1981 Century, which. It was a really good and reliable truck for us. We had nothing bu problems with the dealer (who will remain nameless) with them giving us specs totally wrong or not what we want and we had to chase them where they should have been chasing us. Their attitude was we have an ALF so were gonna get another, NOPE!

    Hopefully Albion will get this issue resolve, no manufacturer should let a truck acting like that out of their shops!


    Re: Albion Rhode Island Ladder Truck Issue
    « Reply #2 on: January 12, 2007, 01:56:39 PM »

    This truck is sitting in our station 4. I looked it over a couple weeks when I was working OT there. From what I've heard the front frame rails are single channel not tripled up as is the norm in a ladder. This would explain the torsional shake seen in the video. It's too bad, apart from the cheesy plastic interior in the cab, it looks like a pretty well laid out truck. /QUOTE

    This is only excerpt--the rest was some brand bickering.

    Leave a comment:


  • NewJerseyFFII
    replied
    Frame Rails ?

    Any one know what type of frame rails are on the ALF aerial ladder. single,double ?

    Leave a comment:


  • Steeda83
    replied
    Originally posted by fire0099881 View Post
    does anyone know if this just started happening? wonder how long the truck sit's before being moved, with it being a 2002 and only almost 12,000 miles on it, a couple of our trucks get a bounce in them but not near as bad as that, from sitting for a while without being drove, b/c the get a flat spot on the tire where it was sitting, but it you take it out and drive it for a little bit and get the tires warmed up, it goes away. but I wouldn't of wanted to be the one driving that truck anywere with a bounce like that, can only imagine the stress it's putting on the frame.
    good idea, matter of fact it's what a fair amount of people thought at the beginning however i heard that was checked out and wasnt the case, an engineer who specializes in this sort of the thing when through the truck head to toe, the hydraulics are severely deteriorated and alot of cracks were found in the body of the truck when they went to repaint it b/c of a paint defect

    Leave a comment:


  • Steeda83
    replied
    from what i've been told(now don't quote me b/c im not too familiar with the particulars on the truck since it's not a truck i drive) but what i hear from some of the guys is that the frame is greatly reduced as it goes under the cab of the truck and even more so where ALF cut into it to fit the engine down lower to fit in with the low profile cab which makes the front a hell of alot weaker which causes the shake, rattle and roll

    Leave a comment:

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