steve s. Posted October 4, 2016 Share Posted October 4, 2016 For sale: Rear bogie setup from low mileage 1966 B 61S. SWD573 axle housings with CRDP 92 & CRD 93 carriers. 7.49 ratio, 40,000 lb capacity. Includes cross member, trunion, camleback springs. Asking $500.00 or trade for winch . Located in NE PA call Steve at five70-2 two 2-44 seven 8. Not sure why people use the letters and numbers like that. Quote Link to comment https://www.bigmacktrucks.com/topic/47142-b-model-tandem-rears-for-sale/ Share on other sites More sharing options...
Maddog13407 Posted October 5, 2016 Share Posted October 5, 2016 tryin to figure out why a B61 would have a 7.49, that would make it go about 35 mph. 7.49 is a gas job ratio commonly found in B42's Quote Link to comment https://www.bigmacktrucks.com/topic/47142-b-model-tandem-rears-for-sale/#findComment-347873 Share on other sites More sharing options...
mrsmackpaul Posted October 5, 2016 Share Posted October 5, 2016 1 hour ago, Maddog13407 said: tryin to figure out why a B61 would have a 7.49, that would make it go about 35 mph. 7.49 is a gas job ratio commonly found in B42's heavy haulage 1 Quote Link to comment https://www.bigmacktrucks.com/topic/47142-b-model-tandem-rears-for-sale/#findComment-347887 Share on other sites More sharing options...
steve s. Posted October 5, 2016 Author Share Posted October 5, 2016 The rears are out of a concrete mixer truck. With 22" tires and a double overdrive 7220 quad box, it would run about 52 mph. This was a very common ratio for mixers and dump trucks. Quote Link to comment https://www.bigmacktrucks.com/topic/47142-b-model-tandem-rears-for-sale/#findComment-347907 Share on other sites More sharing options...
Vladislav Posted October 13, 2016 Share Posted October 13, 2016 On 05.10.2016 at 4:16 PM, steve s. said: The rears are out of a concrete mixer truck. With 22" tires and a double overdrive 7220 quad box, it would run about 52 mph. This was a very common ratio for mixers and dump trucks. I agree on that. Might be interested knowing exact number of teeth in the upper gear set(s) Although for the best I'm looking for something faster. Nearly 6.5. Already looking for a while though. Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment https://www.bigmacktrucks.com/topic/47142-b-model-tandem-rears-for-sale/#findComment-348634 Share on other sites More sharing options...
steve s. Posted October 18, 2016 Author Share Posted October 18, 2016 Vlad, I don't have any way of knowing what the upper set of gears are without taking it apart. The Mack TS 442 manual has that information for front mounted single axle carriers, but it does not list that information for top loaded tandem carriers. Maybe someone else has better information. Steve 1 Quote Link to comment https://www.bigmacktrucks.com/topic/47142-b-model-tandem-rears-for-sale/#findComment-349149 Share on other sites More sharing options...
Vladislav Posted October 19, 2016 Share Posted October 19, 2016 On 18.10.2016 at 6:48 PM, steve s. said: Vlad, I don't have any way of knowing what the upper set of gears are without taking it apart. The Mack TS 442 manual has that information for front mounted single axle carriers, but it does not list that information for top loaded tandem carriers. Maybe someone else has better information. Steve Steve, I suppose it's not too easy to find a chat on B-model's carriers with teeth counts on every gear setup. Seems to me much easier to remove the big side cover on the carrier. It allows to cont both bevel wheel and pinion. In my case I have 9.02's and will have to use my original lower sets due to the design. So the upper ones is the only game to play. In very theory your lower sets might be slower than mines. If so I would achive something faster than 7.49 you have now and it seems good. Although IF you will be so eager to spend time removing the covers and count teeth, and IF the cound is good, I will want you to take the diffs apart and send me the gear sets only. So I'm afraid I'm too cantankerous buyer in this case Vlad Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment https://www.bigmacktrucks.com/topic/47142-b-model-tandem-rears-for-sale/#findComment-349246 Share on other sites More sharing options...
steve s. Posted November 17, 2016 Author Share Posted November 17, 2016 The rears have been sold. Thanks for looking. Quote Link to comment https://www.bigmacktrucks.com/topic/47142-b-model-tandem-rears-for-sale/#findComment-352223 Share on other sites More sharing options...
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