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I am not clear on the question. You are right with your statement ""vapor bubble" is both created and destroyed at the liner itself and not the result of being moved about by the circulation of the coolant." As I explained the bubble is formed due to static pressure (vacuum) drops below the vapor pressure of the coolant. Coolant will start bubbling up due to this and will collapse as soon as vacuum/static pressure exceeds the vapor pressure of the coolant. This occurs in couple of milli seconds and is not caused by the circulation of the coolant. Cavitation can also occur in the water pump itself but the cylinder liner cavitation is much more severe.
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Take good care of these! When you read about the electronics in anything new, the only winners will be the mice who enjoy snacking on wiring😎
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Makes me wonder, how many drivers outside of vocational uses have ever driven a truck OTR with spring ride? Good spring is better than bad air!
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Ahhh I gotcha. Yeah I remember that one. That didn't seem like a very good design from the start. The Mack TD i believe it was called.
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Not yet, the 5th is off the frame, and I am going to paint where I blasted the rust off with a scaler, then re assemble and sell. To be fair it is going to need some work, and I don't know how many would be willing to put in the work.
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That was that one with those Y shaped trailing arms (?) I think they referred to the arms as " blades " wherever the special place they went, I think this overcomplicated huckfest is headed.
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Right! Thats what im say.....did they put enough of them in there holy crap.
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The beauty of air ride is you can add lift axles and have the equalize simply, something that can't easily be done with spring suspensions. Company I worked for had ARD's on their heavy haul trucks. Can't say it did better or worse than the IHC (HAS) I had on mine. I had a Neway lift axle and it would equalize after a fashion with the IHC when loaded.
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🤢 What the huck
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Did you ever end up selling the Marmon?
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Look at the Maxilite and count the bushings, 4 per axle, then look at the 8 bag and count the pivot points and bushings.
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Yeah the ARD is a totally different beast, nothing crosses between those and the ARDAB. I actually bought a nice lightly used walking beam cut off to replace the ARDAB with. Never got around to doing the swap, and it will now be up to the next owner what they want to put under it.
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Wow. It wouldn't suprise me tho....I wonder if thats the MaxAir suspension? They referred to it as the "twisted sister" suspension, i thought was kinda weird. I believe that was a hendrickson suspension as well.
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@Geoff Weeks as far as Neway, i think its the best there is withe the EXCEPTION of that ARDAB you're speaking of. Thats a really rare suspension. Ive only ever seen maybe 2 or 3 of them in person. Neway messed up on that design and Ive heard nobody really liked that model. The ARD heavy Neway and the more modern ADZ were both great suspensions. The weak link on the ARD were the equalizer bar bushings, and the weak link on the ADZ were the top tri-link bushings up top. We have both where I work and thats been the only issues. They are expensive as an option and to get parts for....but they are good suspensions.
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I seem to remember a guy on here a little while back that had some scarce, weird Mack air ride suspension on a 2010s or teens pinnacle highway tractor that he said the parts were no longer available.
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Yeah. Alot going on with that suspension in the pictures. To many moving parts....but i bet it rides well.I have AG460 8 bag on my KW and I like mine, but its hard on top bushing at the axle housing location .It has the big 1" air lines to the air bags and it helps the air move around and equalize and that is why it rides good. The older series KW 8 bags (AG100) I dont like, as they do ride rough due to the small air lines and bushing design. At the end, I agree.....the new Mack 8 bag looks like it could be a maintenance nightmare?
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1988 RD690ST project
67RModel replied to JoeH's topic in Antique and Classic Mack Trucks General Discussion
R-Model Rocker Panel (Right) I know it says out of stock but maybe it isn't. Call Watts Mack and see if they have any other leads. -
I just see a million wear points when compared to the Maxilite (HAS). There is a reason Camelback and Hendrickson walking beam have such a long track life. Hendrickson was designed in the 30's IIRC. The HAS design has been around since at least the 70's. Both are proven and parts are easily obtained. I am the unfortunate owner of a Neway ARDAB suspension, and if I knew then what I know now, would not have bought the truck. New isn't always better, simple is always better than complex, fewer bushings/wearable joints is better than more. On the other hand, are these new trucks still going to be on the road 15 years on? There may be more to worry about then finding obsolete suspension parts.
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Friend sent me these. The new 8 bag looks heavy duty in person and probably rides well, but it has alot of parts to it and its pretty sophisticated looking in its design. Also, it has a TON of bolts, fasteners and brackets. That might be bad for the guys in the rust belt later down the road with salt and rust hiding in around and under all those parts and pieces.....just my opinion there.
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