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M4E9 tracks and driving train??
The AFV ASSOCIATION was formed in 1964 to support the thoughts and research of all those interested in Armored Fighting Vehicles and related topics, such as AFV drawings. The emphasis has always been on sharing information and communicating with other members of similar interests; e.g. German armor, Japanese AFVs, or whatever.
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the_shadock
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Joined: May 26, 2006
Posts: 2865
Location: Normandy, France
PostPosted: Tue Dec 30, 2008 3:32 pm
Post subject: M4E9 tracks and driving train??

Hello,

I discovered today the curious tracks and duckbills that can ben seen on M4E9 tanks. The duckbills are on both sides of the track :

They%20are%20very%20different%20to%20the%20normal%20tracks,%20they%20seem%20to%20me%20to%20be%20narrower%20than%20the%20normal%20tracks%20with%20duckbills%20on%20one%20single%20side%20:

Can anyone tell me more about the tracks, sprockets, roadwheels and driving train? It seems that the roadwheels on the M4E9s
are farther to the hull than the roadwheels on the normal M4s.
The sprockets also seem to be narrower (because the track is not as large as on the normal tanks), are they different on M4E9s?

thanks

Pierre-Olivier

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TrevorLarkum
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Posts: 1596
Location: Northampton, England
PostPosted: Tue Dec 30, 2008 4:51 pm
Post subject: Re: M4E9 tracks and driving train??

I thought the track width was the same in both cases (to match the roadwheels), but spacers were fitted on the inside to allow the inner grousers to be fitted.

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Kurt_Laughlin
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Joined: Jan 23, 2006
Posts: 572

PostPosted: Tue Dec 30, 2008 7:20 pm
Post subject: Re: M4E9 tracks and driving train??

As Trevor noted, the "E9" suspension modification kit added 4-1/2 inch spacers between the bogie brackets and the hull; a similar spacer under the idler bracket (which also lowered the wheels position somewhat); and an extension to the sprockect hub to move it out. Except for the EECs, the tracks and running gear were the standard types.

If you look at these tanks you can readily see the spacers. Also, in photos, if you can see several of the bolts holding the final drives in place you are looking at an E9 tank. On standard suspension the bolts are almost completely blocked from view, except from the very front.

See:

www.toadmanstankpictur...105_02.jpg

www.toadmanstankpictur...105_01.jpg

www.toadmanstankpictur...lee_33.jpg

www.toadmanstankpictur...ant_03.jpg

www.toadmanstankpictur...4a1_03.jpg

www.toadmanstankpictur...ino_01.jpg

compared to similar views in the original message.

KL
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tanker2010
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Joined: Aug 19, 2006
Posts: 264
Location: Kansas City, Mo.
PostPosted: Wed Dec 31, 2008 3:09 am
Post subject: Re: M4E9 tracks and driving train??

Drive sprocket on E9:

[img]http://kcamps.org/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=8205[/img] Idler%20mount%20on%20E9: [img]http://kcamps.org/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=8208[/img] Spacers%20for%20suspension%20units%20on%20E9: [img]http://kcamps.org/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=8220[/img]

Ther's nothing different about the track, other than EECs on both sides. The suspension is moved out.
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TrevorLarkum
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Posts: 1596
Location: Northampton, England
PostPosted: Wed Dec 31, 2008 4:11 am
Post subject: Re: M4E9 tracks and driving train??

Nice reference pics, guys.

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Maple_Leaf_Eh
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Joined: Jan 23, 2006
Posts: 517

PostPosted: Wed Dec 31, 2008 3:04 pm
Post subject: Re: M4E9 tracks and driving train??

Nice engineering too. Simple and effective.
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