Mine loves about 30 mph. At 40 to 45 it's way too loud and shakes. Though when I have to drive like that it's ear plug time.
Maybe the drive line does need balancing.
Driving speeds?
Moderators: Cal_Gary, T. Highway, Monkey Man, robi
Re: Driving speeds?
-John
Member of Dixie Division MVC
1953 USAF M37 wow, restored
1962 M151 Ford Production, on the rotisserie now
1953 USMC M37 w/w -in storage
1942 M6 Bomb Service Truck (sold to UK collector)
1967 M116A1 Pioneer Trailer
1968 M101A1 Trailer
S-89 Comm box
Member of Dixie Division MVC
1953 USAF M37 wow, restored
1962 M151 Ford Production, on the rotisserie now
1953 USMC M37 w/w -in storage
1942 M6 Bomb Service Truck (sold to UK collector)
1967 M116A1 Pioneer Trailer
1968 M101A1 Trailer
S-89 Comm box
Re: Driving speeds?
For what it's worth, the gentleman at the driveline shop told me that any vibration at lower speeds is more than likely not an out of balance driveshaft. He says that because the driveshaft is turning at such a slower rate than engine rpm at low speeds, any out of balance issue would not be felt. More characteristically he said an out of balance shaft would be noticed at higher speeds and feel / sound more like a harmonic thing. He then said that the u-joints were the most probable culprit and that mine were bad and needed to be replaced. Now that I have new u-joints in the intermediate and rear shafts (front shaft removed for the time being), I'll take her out as soon as our winter weather warms up next week and see if in fact he was right. Will keep you posted...
Dennis
Dennis
Investig8
1953 M-37
1952 M-38
1953 M-37
1952 M-38
Re: Driving speeds?
Today was a beautiful, sunny Texas afternoon so I fired Fiona up and went for a short drive. She now will do 40 mph without feeling like she's coming apart at the seams. However, 35 still seems to be the sweet spot! After replacing u-joints on the intermediate and rear shafts and then removing the front shaft, she drives SO much smoother!! Thanks, guys, for all your input. This site is perfectly synergistic, as it is so much better as a whole than any one of our knowledge areas!
Have a great week!
Dennis
Have a great week!
Dennis
Investig8
1953 M-37
1952 M-38
1953 M-37
1952 M-38
Re: Driving speeds?
Where's the "thumbs up" button?
LOL, great news.
LOL, great news.
-John
Member of Dixie Division MVC
1953 USAF M37 wow, restored
1962 M151 Ford Production, on the rotisserie now
1953 USMC M37 w/w -in storage
1942 M6 Bomb Service Truck (sold to UK collector)
1967 M116A1 Pioneer Trailer
1968 M101A1 Trailer
S-89 Comm box
Member of Dixie Division MVC
1953 USAF M37 wow, restored
1962 M151 Ford Production, on the rotisserie now
1953 USMC M37 w/w -in storage
1942 M6 Bomb Service Truck (sold to UK collector)
1967 M116A1 Pioneer Trailer
1968 M101A1 Trailer
S-89 Comm box
Re: Driving speeds?
The reproduction 4.89:1 ratio gearsets are your only option today, pricey and hard to source.
Originally, they were an option on the WM300 and similar Power Wagons.
The truck will pick up a bit of road speed, limited by available horsepower and will still be slow on hills.
Offroad, they are more limited in performance in tight situations.
PoW
Originally, they were an option on the WM300 and similar Power Wagons.
The truck will pick up a bit of road speed, limited by available horsepower and will still be slow on hills.
Offroad, they are more limited in performance in tight situations.
PoW
Re: Driving speeds?
I had considered the gear swap a few years ago since my truck is AF and we all know they don't offroad, just putt around the airfield and parades.
But decided against it as mine was running as is. I'm a firm believer of don't fix it if it's not broken.
But decided against it as mine was running as is. I'm a firm believer of don't fix it if it's not broken.
-John
Member of Dixie Division MVC
1953 USAF M37 wow, restored
1962 M151 Ford Production, on the rotisserie now
1953 USMC M37 w/w -in storage
1942 M6 Bomb Service Truck (sold to UK collector)
1967 M116A1 Pioneer Trailer
1968 M101A1 Trailer
S-89 Comm box
Member of Dixie Division MVC
1953 USAF M37 wow, restored
1962 M151 Ford Production, on the rotisserie now
1953 USMC M37 w/w -in storage
1942 M6 Bomb Service Truck (sold to UK collector)
1967 M116A1 Pioneer Trailer
1968 M101A1 Trailer
S-89 Comm box
Re: Driving speeds?
"Limited in tight situations" - is there some other limit besides the loss of torque due to the change in gearing? I'm sticking with stock in mine, but curious if the 4.89 gears introduce other limitations.PoW wrote: ↑Fri Feb 11, 2022 3:22 am The reproduction 4.89:1 ratio gearsets are your only option today, pricey and hard to source.
Originally, they were an option on the WM300 and similar Power Wagons.
The truck will pick up a bit of road speed, limited by available horsepower and will still be slow on hills.
Offroad, they are more limited in performance in tight situations.
PoW
1951 M37 "Brutus" w/Winch and 251 engine
Re: Driving speeds?
Simply put, they are great for a truck that never leaves the pavement.
PoW
PoW