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Author Topic:   metric over rail cars
washeduptoo
Dirt Maniac

Total posts: 174
posted December 16, 2005 08:31 PM  
I've been searching thru chassis builders web sites and it appears there are alot of metric overslung cars being built in Ill,WV,Ky., etc. I live in Louisiana and there are few if any metric over rail cars being built or driven in my area, Tx, Ak.,La. etc. It is the off season for racing and I was just wondering why that is. Is it the type of tracks or is the metric over rail is the wave of the future and we haven't caught up to it yet. Thanks for any one who might have any thoughts on why that is.

[This message has been edited by washeduptoo (edited December 16, 2005).]

racer17j
Dirt Forum Champ
Total posts: 5499
posted December 16, 2005 11:08 PM  
Yes, I guess I should have said non-underslung or overslung cars, I've changed it in the message. Thanks

[This message has been edited by washeduptoo (edited December 16, 2005).]

Kromulous
Dirt Forum Champ
Total posts: 848
posted December 17, 2005 09:51 AM  
I'll speak for Ohio and Ky a litte, but in general everything is dry slick here. I believe thats the reason, more flex for more grip.

Krom.

chickenlittle
Dirt Full Roller

Total posts: 71
posted December 17, 2005 10:17 AM  
One reason for the overslung tail is that it allows for unlimited travel on the LR. You can run a suspension with as much axle thrust as you wish which will enhance forward bite. It will make a chassis flex a lot more too. This will compensate for an unballance chassis set up. It realy is a crutch for set up problems, but makes a car pretty forgiving. One problem with them is that you will get more stress fractures at the welds due to the twisting of the chassis. It also leaves your fuel cell more exposed. The under slung chassis will last longer and is probably safer IMO.

Kromulous
Dirt Forum Champ
Total posts: 848
posted December 17, 2005 10:42 AM  
Another thing i wanted to say is, i was talking to one chassis MFG's and they told me that Hooser Mod tire is faster with alot more body roll and suspension travel than an IMCA tire.

This could be what your seeing, IL, IND, KY and OH are all UMP heavy, track wise.

Krom.

racer17j
Dirt Forum Champ
Total posts: 5499
posted December 17, 2005 10:55 AM  
Thanks for the input and I was wondering if had something to do with UMP tire,track etc, because from the outside thats what it looked like. How are they on tacky tracks?

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