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A different truck would be interesting but there are steeper cost issues associated with that route when comparing apples to apples. The cost for the same thing is quite a bit more than for a military truck. Each time I have seen a heavy duty (at least 2 tons highway rated) all wheel drive diesel civvy truck with a lift gate, rugged body not the plastic motorhome crap, generator, etc. it is alwas starting around $60K and that is for a beater with 350K miles on it, the price goes up from there. $120K is about right and that is a bit much. Whomever suggests the use of a civvy truck, please suggest a suitable one that does not cost as much as a yuppie dwelling.
I have owned two former bread trucks and I liked them for the most part. With a V8 and a 3.73 hypoid, the better one was a 1-ton and had no problem doing 65MPH all day. It was low deck and the ATV fit right in with the dirt bikes, etc. However, there was no external place to mount a generator so it ended up inside and was noisy and nasty, vehicle was not diesel, had 75000 miles, and the roll-up door in the back just sucked dirt in constantly. It had no a/c, but niether does this one yet. The other one had doors too narrow to get an ATV in. They were low to the ground and could get stuck. It was not all wheel drive either.
If anyone has a civvy truck to trade me that has an enclosed body 7x12 ft of walk-around space, mounted generator, lift gate if the deck is high, and other rugged amenities, or anything close, let's see it! It's got to fit my driveway so <25FT is best.
Sure I could get a trailer and pull it with a pickup truck but where's the fun in that? Then I got to store the low-clearance thing as it can't be backed into the yard.
For truck-suitability-for-purpose reasons I'm willing to consider working on the M818 in order to cruise 12% faster (60). It's already been explained why cruising reliably at 60 means a 65-70MPH redline.
In the order of preference as of today (not considering cost) -indeed the order of preference could change.
1.) ~4.88 differential gears all around
2.) better trans. and move the transfer back a little to accommodate
- which trans? Most seem to have an 0.78 OD, no difference. *
3.) aux. trans behind the transfer, depends on length. 8031C** Brownie (28"?) speed's right, the unit is 'large'. might work.
- What is the length of the 818 rear main drive shaft, will that even fit?
- disengage front when in OD
4.) change rear axles to tractor trailer type with better gears and have gear made for front
5.) just do 50MPH and the heck with it. but what does that gain?
* Spicer CM60 series 6253B = OD of 0.69, 2100RPM @ 60MPH & 1927 RPM @ 55MPH. Unknown length.
* Spicer Easy-Shift ESO66-7B = OD of 0.74, not too useful. 32.87" L
** Spicer 8031C OD= 0.75 according to No.2diesel
** Spicer 8431 also has an OD, unknown what ratio R8341-C, D, E, F, G ratios. unit AKA AM0610-4L.
** Spicer 7041 OD=0.83, L=25 3/16"
** Spicer 5000/58xx series, too light on torque, 580 FT Lbs.
Regarding the Spicer 6400 series, of which the 6453 is used in the M818, the 1.79:1 "hole" everyone hates is really no better in the 6453B which is slightly smaller at 1.89:1
What is the length of the Spicer 6453 transmission?
Attached is a nice cutaway of it fromthe parts manual as well as a Spicer model ID document from the www.
I'll be researching more transmissions as time goes on but it doesn't look that great. If anyone has data for a suitable transmission with a decent OD better than 0.69, that would be interesting. I can sure use the help for any unanswered questions and more technical information will make the topic better.
In parallel, I an going to research some of this other stuff (axles, gears). Nothing happens in a day.
I have owned two former bread trucks and I liked them for the most part. With a V8 and a 3.73 hypoid, the better one was a 1-ton and had no problem doing 65MPH all day. It was low deck and the ATV fit right in with the dirt bikes, etc. However, there was no external place to mount a generator so it ended up inside and was noisy and nasty, vehicle was not diesel, had 75000 miles, and the roll-up door in the back just sucked dirt in constantly. It had no a/c, but niether does this one yet. The other one had doors too narrow to get an ATV in. They were low to the ground and could get stuck. It was not all wheel drive either.
If anyone has a civvy truck to trade me that has an enclosed body 7x12 ft of walk-around space, mounted generator, lift gate if the deck is high, and other rugged amenities, or anything close, let's see it! It's got to fit my driveway so <25FT is best.
Sure I could get a trailer and pull it with a pickup truck but where's the fun in that? Then I got to store the low-clearance thing as it can't be backed into the yard.
For truck-suitability-for-purpose reasons I'm willing to consider working on the M818 in order to cruise 12% faster (60). It's already been explained why cruising reliably at 60 means a 65-70MPH redline.
In the order of preference as of today (not considering cost) -indeed the order of preference could change.
1.) ~4.88 differential gears all around
2.) better trans. and move the transfer back a little to accommodate
- which trans? Most seem to have an 0.78 OD, no difference. *
3.) aux. trans behind the transfer, depends on length. 8031C** Brownie (28"?) speed's right, the unit is 'large'. might work.
- What is the length of the 818 rear main drive shaft, will that even fit?
- disengage front when in OD
4.) change rear axles to tractor trailer type with better gears and have gear made for front
5.) just do 50MPH and the heck with it. but what does that gain?
* Spicer CM60 series 6253B = OD of 0.69, 2100RPM @ 60MPH & 1927 RPM @ 55MPH. Unknown length.
* Spicer Easy-Shift ESO66-7B = OD of 0.74, not too useful. 32.87" L
** Spicer 8031C OD= 0.75 according to No.2diesel
** Spicer 8431 also has an OD, unknown what ratio R8341-C, D, E, F, G ratios. unit AKA AM0610-4L.
** Spicer 7041 OD=0.83, L=25 3/16"
** Spicer 5000/58xx series, too light on torque, 580 FT Lbs.
Regarding the Spicer 6400 series, of which the 6453 is used in the M818, the 1.79:1 "hole" everyone hates is really no better in the 6453B which is slightly smaller at 1.89:1
What is the length of the Spicer 6453 transmission?
Attached is a nice cutaway of it fromthe parts manual as well as a Spicer model ID document from the www.
I'll be researching more transmissions as time goes on but it doesn't look that great. If anyone has data for a suitable transmission with a decent OD better than 0.69, that would be interesting. I can sure use the help for any unanswered questions and more technical information will make the topic better.
In parallel, I an going to research some of this other stuff (axles, gears). Nothing happens in a day.
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