issolating differential

feel the need to change or modify your mutt? This is the place to discuss it.

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SV2IPW
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issolating differential

Unread post by SV2IPW » December 24th, 2009, 10:27 am

As i know, the most of us, we have noise problem from the rear differential block.
the reason for than noise it may be from the weel construction of the diff and the vibration that transfered to the main body of the jeep.
i would like to know if anybody has issolate the rear diff from the main body and what kind of silent block has used for that.
Thanks in advance.
M-SERIES LOVER
M151A2 American Motors General 1977
(Hurricane L-142, 2320cc)
keep them rolling
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raymond
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Re: issolating differential

Unread post by raymond » December 24th, 2009, 10:42 am

I used squares of rubber cut from a tractor tire inner tube. I stacked them about 4 layers thick.
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ltsimp
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Re: issolating differential

Unread post by ltsimp » December 25th, 2009, 9:19 am

I have had good luck cutting squares out of conveyor belt. Probably 1/4 to 5/16 inch thick. Somewhere around you there should be an industrial center with lots of conveyor belts. Just ask the management about having a section of the stuff they are throwing away.

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svramselaar
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Re: issolating differential

Unread post by svramselaar » December 25th, 2009, 1:24 pm

this how i have it for years now

front side diff
Image

rear side diff
Image

george

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Re: issolating differential

Unread post by SV2IPW » December 25th, 2009, 2:20 pm

Very interesting modiffication svramselaar, have you see any difference at the noise level of the rear diff??
Do you have any dimensions of this metall construction with the silent block???
M-SERIES LOVER
M151A2 American Motors General 1977
(Hurricane L-142, 2320cc)
keep them rolling
T-99 16650

(O)IIII(O)
KEEP THEM ROLLING

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Re: issolating differential

Unread post by toptiger » December 26th, 2009, 2:00 am

I also like your M274 Mule. Lots of nice mods. What did you put on the bed? I didn't know there were any Mules in Europe
Here is mine, an A-5. It is original with like 20 hours on the engine, but the alternator and electric start may have been added. The Army did the modification but not sure if mine was after that or not. The rubber cover just lays on the bed for protection.
Image
Image
Image
We had one in VN to take us from Ops shack to the flight line, and also load all the rockets and ammo and M-60s. This is August 1968, Bien Hoa with me siting up front next to the driver.
Image

AND RICK, NO COMMENTS ABOUT ME NOT SMILING! I WAS ONE SCARED PUPPY FOR THOSE FIRST MISSIONS
Author M-151 MUTT, The Vietnam Jeep
Paper edition http://www.blurb.com/books/1646321
IOS ebook iBookstore: http://itunes.apple.com/us/book/id598605516
2 M151A2s, M416 trailer, M274A5 Mule,
Former Army Aviator, Bien Hoa, VN 1968-69
Mustang Gunship Platoon Commander
68th Assault Helicopter Company 'Top Tigers'
Central Florida and France

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svramselaar
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Re: issolating differential

Unread post by svramselaar » December 26th, 2009, 6:47 am

hello

first of my mule i have made it myself from scratch i only had picture`s and the size
everything you see i made myself

it has a 13 hp honda engine and automatic gears it runs 45 km/h about 30 m/h
it is road legal in holland thads why it has lights and the plate at the rear
i had to make it a two seater for the lights
the bed it garden wood

for the diff
this is all to it the rubbers are from a ford front lower arm the small one`s of a ford fiesta (i dont know if know them over there )
ImageImage

sorry tad one picture is upside down

aboud the sugga this is now mine it has stil the englisch lisence plates
Image


george

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Re: issolating differential

Unread post by SV2IPW » December 26th, 2009, 7:47 am

How about the noise level now George?? Did you see any difference with this modiffication?
M-SERIES LOVER
M151A2 American Motors General 1977
(Hurricane L-142, 2320cc)
keep them rolling
T-99 16650

(O)IIII(O)
KEEP THEM ROLLING

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svramselaar
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Re: issolating differential

Unread post by svramselaar » December 26th, 2009, 8:35 am

hello

yes the noise is lower
ken has driven my mutt maybe he can tel it
there is no metallic contact diff to chassis
on top of the springs i have also 5mm rubber rings (so as every car)

george

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Re: issolating differential

Unread post by toptiger » December 26th, 2009, 11:34 am

george, re: your 'Mule' incredible job.
Author M-151 MUTT, The Vietnam Jeep
Paper edition http://www.blurb.com/books/1646321
IOS ebook iBookstore: http://itunes.apple.com/us/book/id598605516
2 M151A2s, M416 trailer, M274A5 Mule,
Former Army Aviator, Bien Hoa, VN 1968-69
Mustang Gunship Platoon Commander
68th Assault Helicopter Company 'Top Tigers'
Central Florida and France

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Re: issolating differential

Unread post by Floyd » December 26th, 2009, 12:22 pm

George: Fantastic job on the Mule. Congrats on the new Sugga, you need to post some pics.

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Re: issolating differential

Unread post by toptiger » December 26th, 2009, 12:56 pm

george, your album also has pic of the famous Barstow Mutts. Hadn't seen that one before
http://www.surfacezero.com/g503/showpho ... ts&cat=500
Last edited by toptiger on September 1st, 2010, 8:45 am, edited 1 time in total.
Author M-151 MUTT, The Vietnam Jeep
Paper edition http://www.blurb.com/books/1646321
IOS ebook iBookstore: http://itunes.apple.com/us/book/id598605516
2 M151A2s, M416 trailer, M274A5 Mule,
Former Army Aviator, Bien Hoa, VN 1968-69
Mustang Gunship Platoon Commander
68th Assault Helicopter Company 'Top Tigers'
Central Florida and France

ohiomgman
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Re: issolating differential

Unread post by ohiomgman » September 1st, 2010, 6:19 am

I purchased a small 5/8" sheet (a drop from a local supply house) and cut then drilled my own rear diff isolation mounts from "Delrin." A "Nylon-like" polymer. There is a noticeable improvement in the (lack of) harmonics from the rear diff.
NRA Life Member. Class 7 FFL/ SOT
1964, M151-A1
1950, US M-38 Jeep. Serial # 36.
1952,US M-38 Jeep
1965, Willys M-274 Mule
1945, CCKW, closed cab, 353
416 Trailer
M100 Trailer
US Army 5 year RA. RSVN 1968-1970

199th mp
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Re: issolating differential

Unread post by 199th mp » September 1st, 2010, 8:14 pm

ohio mg man--do you think i could achieve a similar improvement with lexan, or perhaps the heavy rubber setting blocks we use in the commercial glazing industry? the blocks come in a variety of thicknesses, and are 1" X 3 " in length. they are very difficult to compress, as they are designed to support large glass units that weigh in excess of 400 lbs.

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Re: issolating differential

Unread post by ohiomgman » September 16th, 2010, 2:08 pm

199th mp wrote:ohio mg man--do you think i could achieve a similar improvement with lexan, or perhaps the heavy rubber setting blocks we use in the commercial glazing industry? the blocks come in a variety of thicknesses, and are 1" X 3 " in length. they are very difficult to compress, as they are designed to support large glass units that weigh in excess of 400 lbs.

Lexan would seem a bit "stiff" for that. A polymer like polyethelene seems to work out just fine. Rubber seems like it compresses too much. I dunno. You can find conveyer belting with nylon cording in it for sale. It is a bitch to cut. Thick rubber is a bitch to cut no matter what. I liked the Delrin because it had SOME give and I could mill the holes on my Bridgeport and cut them to size with a bandsaw. It was not that expensive to buy..look for a place that has something in "small scraps."
NRA Life Member. Class 7 FFL/ SOT
1964, M151-A1
1950, US M-38 Jeep. Serial # 36.
1952,US M-38 Jeep
1965, Willys M-274 Mule
1945, CCKW, closed cab, 353
416 Trailer
M100 Trailer
US Army 5 year RA. RSVN 1968-1970

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