Road Ranger model #

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Road Ranger model #

Postby SallysMan » Mon Jan 14, 2013 12:59 pm

I am looking for the model of a RoadRanger that would be 10speed over drive (lever to the Dash in high gear) and a deep 5 reduction. Any ideas? The Crispell 761 (now Ed Eminson's) had one in it but it's across the globe..
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Re: Road Ranger model #

Postby Huskiedrive361 » Mon Jan 14, 2013 1:05 pm

A ten speed with a deep reduction 5 is a 15 speed tranny. You want an RTO-915, RTO-9515, or RTO-12515. I have a 12515 in my Black 361 and it is a perfect combination. Good road speed, easy shifting (ten pattern) and 5 off road gears for heavy load.
Stan Augustine

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Re: Road Ranger model #

Postby 75N761TLL » Mon Jan 14, 2013 2:17 pm

The only difference in these are the torque ratings.... the last 2 digits 15 for 15 spd.....
the 9 in 915 is for 900 lbs/torque ..... 9515 for 950 lbs/torque.... and 12515 for 1250 lbs/torque
In case you were wondering the difference..



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Re: Road Ranger model #

Postby quadbox » Mon Jan 14, 2013 3:47 pm

As others said you are talking about a RTO 915to RTO 15715. With the direct trans deep reduction is 15.40 and high gear is 1.00. With the Overdrive model deep reduction is 12.10 and high gear overdrive is 0.79. First gear in direct drive trans is 9.96 and first gear in overdrive trans is 7.83.The deep reduction in the overdrive models is comparable to RTO 13 speed with a first gear of 12.56. Joe D.
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Re: Road Ranger model #

Postby SallysMan » Tue Jan 15, 2013 7:53 am

Thanks for the info, Joe if I read your post, a 913, 9513 etc, would give me the same ratio 1st gear as the 9515? I am putting a dumping flat together and the truck is now very low geared 53 mph.. it's a former fire truck with 9509 and low speed single axle. i would like 65mph and also low off road speed for getting to the woods and fields.
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Re: Road Ranger model #

Postby quadbox » Tue Jan 15, 2013 11:09 am

Make sure you use a RTO not RT trans. If you want to run 65 mph at 2100 with 20" rubber. I think 4.44 rear ratio would give that approximate speed. I once had a truck with RTO 9513,20" rubber and 4.33 gears. It ran out about 72 mph at 2100 rpm. Maybe my #s are not exact but close.If your truck runs 53 mph at 2100 20" rubber now I would think rear ratio is 4.44-4.56 orclose if trans is direct drive. Joe D.
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Re: Road Ranger model #

Postby Steve B » Tue Jan 15, 2013 1:22 pm

This web site will give you a good idea of what gears give what speed.

http://www.roadranger.com/ecm/groups/pu ... 062746.swf

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Re: Road Ranger model #

Postby SallysMan » Wed Jan 16, 2013 10:23 am

Thanks for the help.. once i get the truck home i will investigate further, and probably be looking for an RTO 9513..
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Re: Road Ranger model #

Postby rumpy122 » Mon Jan 21, 2013 8:18 pm

I have a good used RTO 13 speed,asking 750.00 call me(914)474-7383, my name is Dominick
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