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Midnight Metal Works T Case.

my favorite thing I have ever heard is that you can only have 2 out of the 3 options I’m about to list

Cheap
Strong
Light

I’ve got strong heavy shit....and everytime I start to consider weight savings like lightweight brakes or a billet case, and the list can go on forever on how to save weight but I swear it’s $800 to shave 30-40 lbs. I’m too cheap to spend 5k to save a few hundred lbs on a big dumb recreational wheeler.

Absolutely agree.

I don't think they are out of line on price. That's a lot of time to carve that thing out of a solid block of aluminum. But when you see the price, it makes you realize that the 205 iron case is fine :laughing:

The only way you're going to see anything but negligible wieght savings is body part removal. :flipoff2: glass and sheet metal are heavy.
 
If I was starting a build now, I would have looked hard at this over my Atlas. A bit smaller of a tcase would have made packaging easier. The weight savings wouldn't hurt.
 
All talk of weights but what about gear engagement strength. If I'm not mistaking Guys break 300 cases because the gears are constantly trying to separate from each other. So how long can a billet case take this stress and/or how much power can it take before it pops. I like the 300 but I feel it belongs more in a lightweight crawler than anything else. The only guys breaking tcases I wheel with have been all 300's, and since then one of them has upgraded to an atlas and hasn't had a hiccup.

Also, How much are you guys swapping cases that going from passenger drop to driver drop is that big of a deal...
 
I have Atlas and Dana300 gears on the shelf and they aren't the same size. Atlas ones are bigger, no doubt.
I'm not talking about D300 gears. I'm talking about the gears in the Metal Works D300. Click link in first post. Look at the pictures. The gears are clearly of the same size.

Actually, this is why I was questioning the weight savings previously; how is it possible to cram Atlas size gears into a D300 size billet Aluminum case while reducing weight and not compromising strength?
 
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I'm not talking about D300 gears. I'm talking about the gears in the Metal Works D300. Click link in first post. Look at the pictures. The gears are clearly of the same size.
I'm aware about the gear size being similar but doesn't the style of gear cut in a 300 case allow for the gears to want to separate. I feel like I read that somewhere. Unless you're saying that the jb gears do not have that cut on them and do not have that problem. I could be wrong here but I swear I read the design of the gears wanting to separate under load is what causes the case splitting.
 
I'm aware about the gear size being similar but doesn't the style of gear cut in a 300 case allow for the gears to want to separate. I feel like I read that somewhere. Unless you're saying that the jb gears do not have that cut on them and do not have that problem. I could be wrong here but I swear I read the design of the gears wanting to separate under load is what causes the case splitting.
Separating under load is the nature of all gears. That's why gear driven cases need beefy cases; to keep from exploding. Chain-drive cases don't have this problem because the chain is in tension which holds the case together.

The Lomax gears appear to be either pure spur gear or have smaller helix angle compared to the Atlas gears. This would make the Atlas gears smoother and quieter but not as strong.
 
All gear cases are in tension per day. Nothing unique about the D300 that I'm aware off. They break because it's a 45 year old case that was never designed to have 4:1 reduction in it.

A billet case should be many times stronger than the old iron case. The replace a case has been around a while and was pretty proven.
 
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I'm not talking about D300 gears. I'm talking about the gears in the Metal Works D300. Click link in first post. Look at the pictures. The gears are clearly of the same size.

The gears in the Metalworks are absolutely D300 gears. The whole point of it is you can buy an empty case and swap all the guts from your stock 300 into it.

The gears shown are a Lomax 4:1, but you can put those in any D300.
 
The gears in the Metalworks are absolutely D300 gears. The whole point of it is you can buy an empty case and swap all the guts from your stock 300 into it.

The gears shown are a Lomax 4:1, but you can put those in any D300.
Not what I took away from the pictures and video. Yes, you can buy a bare case and swap stock D300 internals. (Which seems stupid). But the Rockbox they are hyping now comes with the Lomax gears via partnership with JB Conversions.
 
Not what I took away from the pictures and video. Yes, you can buy a bare case and swap stock D300 internals. (Which seems stupid). But the Rockbox they are hyping now comes with the Lomax gears via partnership with JB Conversions.

Here's some more info on them and more comparison pictures:


Yes they're stronger than stock D300 gears, but all I'm saying is that they're not proprietary to the Rockbox, JB's been making those gears for over a decade. The design constraints off the stock 300 haven't changed as far as tooth width and centerline distance.

I have the Lomax 4:1 set in my Stak billet 300 and I will be swapping those out for stock gears before race season starts :laughing:
 
Yes they're stronger than stock D300 gears, but all I'm saying is that they're not proprietary to the Rockbox, JB's been making those gears for over a decade. The design constraints off the stock 300 haven't changed as far as
Yes, I understand that. Have plenty of friends running Lomax gears in D300 . . . at least until they got tired of breaking and upgraded to an Atlas.

The only thing I find confusing is how gears that fit in an Atlas can also fit in a D300.
 
Who mentioned anything about swapping atlas and d300 gears :confused:
JFC. How dense are you? Nobody said anything about swapping Atlas and D300 gears. Click the link in the first post. Look at the fawking pictures.
No discernable difference in size. Yes, the cut is different but if anything the Lomax gears would be stronger than Atlas gears (at the expense of being more noisy).
 
JFC. How dense are you? Nobody said anything about swapping Atlas and D300 gears. Click the link in the first post. Look at the fawking pictures.
No discernable difference in size. Yes, the cut is different but if anything the Lomax gears would be stronger than Atlas gears (at the expense of being more noisy).

Clearly youre confused about what's going on here.

D300 and Atlas gears are not the same size.

The midnight case is nothing more than every D300 part available sold to the consumer as a ready to run transfercase.
 
Clearly youre confused about what's going on here.

D300 and Atlas gears are not the same size.

The midnight case is nothing more than every D300 part available sold to the consumer as a ready to run transfercase.
OMG. You clearly have not looked at the fawking pictures. Click the link. Look at the fawking pictures. This discussion has NOTHING to do with stock D300 gears. NOTHING. Metal Works has a D300 replacement case that will accept stock D300 internals. They are also selling the "Rock Box" which is based on the same D300 replacement case but with upgraded Lomax gears. The Lomax gears are the same size as Atlas gears. Its clear from the pictures. Why else would they be comparing Lomax gears and Atlas gears in the same fawking picture.

EDIT. Here's on of the the pictures. Clear?

Atlasvslomax_900x.jpg
 
The Lomax gears are the same size as Atlas gears. Its clear from the pictures. Why else would they be comparing Lomax gears and Atlas gears in the same fawking picture.

EDIT. Here's on of the the pictures. Clear?

Lomax gears are 4:1 D300 gears. Pics are for marketing purposes, they're probably 15 y/o pics.

 
OMG. You clearly have not looked at the fawking pictures. Click the link. Look at the fawking pictures. This discussion has NOTHING to do with stock D300 gears. NOTHING. Metal Works has a D300 replacement case that will accept stock D300 internals. They are also selling the "Rock Box" which is based on the same D300 replacement case but with upgraded Lomax gears. The Lomax gears are the same size as Atlas gears. Its clear from the pictures. Why else would they be comparing Lomax gears and Atlas gears in the same fawking picture.

EDIT. Here's on of the the pictures. Clear?

Atlasvslomax_900x.jpg
the question then becomes what ratio is that atlas gear in the pic?

i doubt a 5.0 atlas gear can fit in a d300
 
I feel that way about the Dana 300 in general, unless you already bought the gears, outputs and just need to upgrade your case, I don't see that point. Starting from scratch a Dana 300 wouldn't even be on my short list for that price point especially considering the competition it puts into play. Atlas, Hero, NWF, np205 kits, and a Dana 300, why?

Maybe low powered lightweight crawler for space savings or comp rigs.

I once had a billet case in my zuk that turned 39's on yotas for 4 years with no real issues, doesn't mean it was a good idea and neither did the 39's on yotas, one motor swap and now I'm starting from scratch and the Dana 300 isn't even in the cards, won't make $$$$ mistakes like that anymore.:homer::lmao:
 
Exactly. Even then you would often need a doubler. I don't understand why they are trying to position this as an alternative to an Atlas.
Because it could be passenger drop or driver drop without taking it apart :lmao:. Awesome, sure, as long as 4:1 works around every setup you have.
 
Seems like every so often companies come out with products that lets one think their issue is solved and they jump right back down the rabbit hole.

I put the 300 with yota axles and the dana 30 front. Tons of aftermarket support but just because you could doesn't mean you should.
 
I'm at an interesting cross road. I am building at the moment... LS>SM465>D300. LS may be warmed over a bit (I have no idea I bought a rebuilt never fired engine without paperwork).

I have a 1980 Short D300 and this is being packaged in a flat fender with D44s and 35" rubber. The case is original and to my knowledge not rebuilt.

Rather than upgrading outputs etc. I would be interested in this product (loaded) because the Atlas if I'm not mistaken is about 1.5"-2" longer? Making my short driveshaft already shorter. I likely won't find another 1980 short case... I stumbled upon it by mistake.

Market price for a as-is used D300 is $250-300CAD here.

$750 USD 4:1 Gears
$450 USD rear output
$275 USD front output

After $ conversions etc. let's say this will cost me $2200 CAD on the cheap side to add all that junk or $4400 for a complete unit that is brand spanking new... to me that isn't horrible? Maybe I'm off my rocker but if I bust my case I'm still up creek without a paddle.

I just checked Atlas pricing to build something similar for $2728?! Ok maybe I'm off my rocker
 
I’m interested in this. Not for myself but just to see the success of it.

It seems the Dana 300 had so many weak links it wasn’t a path to go down. First it was outputs, you upgrade them to 32 spline, then it was gears, so then you upgrade to the JB lowmax gears. It seemed that solved it for most but some would crack the case. This solves that.

Sub’d for future abuse testing if anyone on here buys one!
Soooo, basically the same as an atlas…
 
There is nothing magic about "billet". In this application stiffness is just as important, if not more important, than strength. Remember, "strength" = how much load before the material physically fails and "stiffness" = how much the part deforms under load. When dealing with gear boxes, the tolerances are generally tight and thus stiffness is important. Once the housing deforms enough to cause binding of internal components then its game over. Sure, billet (and forged) may have a higher yield strength than cast but all have about the same elastic modulus (~10^6 psi for aluminum). This means that for a given geometry all will have the same stiffness, and will deform the same amount, up until the material reaches its yield stress. If the elastic deformation is enough to cause binding inside a cast housing then switching to a billet housing will change nothing. The only variable available to increase stiffness is geometry, i.e. thickness, etc. The Atlas is big and bulky in order to make it stiff and its made from cast because its cheaper to manufacture. I'd say the primary benefit of billet in this application is the bling effect. :smokin:
 
Just cause it doesn't work for you doesn't mean it doesn't for someone else or 5 other people.

Atlas pro case $3,248.28 is what I priced.

$2,562.82 for the same conf in the standard trail series.

Seems inline to me, the case is stronger, gears seem similar. Hero and Atlas have other options but they are more $$. Of the many twisted rigs and crawlers around here the gear ratio is pretty standard. it has some options that Atlas doesn't offer.

Obviously the trail case is cheaper but it's also a cast case vs a billet case.
 
I'm at an interesting cross road. I am building at the moment... LS>SM465>D300. LS may be warmed over a bit (I have no idea I bought a rebuilt never fired engine without paperwork).

I have a 1980 Short D300 and this is being packaged in a flat fender with D44s and 35" rubber. The case is original and to my knowledge not rebuilt.

Rather than upgrading outputs etc. I would be interested in this product (loaded) because the Atlas if I'm not mistaken is about 1.5"-2" longer? Making my short driveshaft already shorter. I likely won't find another 1980 short case... I stumbled upon it by mistake.

Market price for a as-is used D300 is $250-300CAD here.

$750 USD 4:1 Gears
$450 USD rear output
$275 USD front output

After $ conversions etc. let's say this will cost me $2200 CAD on the cheap side to add all that junk or $4400 for a complete unit that is brand spanking new... to me that isn't horrible? Maybe I'm off my rocker but if I bust my case I'm still up creek without a paddle.

I just checked Atlas pricing to build something similar for $2728?! Ok maybe I'm off my rocker


Ive been running my Scout 300 (short output) stock gears, no work on it done since new in 1980 other than a reseal and oil change, small wear parts like shift fork sliders. I ran it pretty hard the last 2 years on a 5k lb (35" Maxxis Razrs 15x10 alloys) scout II withb1310's at both ends. Only issues I had were the case coming loose at the trans output (Texas pattern) and the rear output nut loosening off a bit. Tightened both back up and kept on truckin.

Never even wore out a u joint (did wear out a centering ball on the rear CV.)

Now this year pitting the same set up against 1 tons and 40s! Hmmm!

Something is going to break. And when it does I go to NWF titan and a 205.
 
I just checked Atlas pricing to build something similar for $2728?! Ok maybe I'm off my rocker
Since you already answered your own question I'll move on to save you even more money, don't put 44's under something with an LS. Even on 35's I'd be weary depending on how heavy your foot could get.
Soooo, basically the same as an atlas…
Well sort of, you get one 4:1 ratio to chose from :laughing:
There is nothing magic about "billet". In this application stiffness is just as important, if not more important, than strength. Remember, "strength" = how much load before the material physically fails and "stiffness" = how much the part deforms under load. When dealing with gear boxes, the tolerances are generally tight and thus stiffness is important. Once the housing deforms enough to cause binding of internal components then its game over. Sure, billet (and forged) may have a higher yield strength than cast but all have about the same elastic modulus (~10^6 psi for aluminum). This means that for a given geometry all will have the same stiffness, and will deform the same amount, up until the material reaches its yield stress. If the elastic deformation is enough to cause binding inside a cast housing then switching to a billet housing will change nothing. The only variable available to increase stiffness is geometry, i.e. thickness, etc. The Atlas is big and bulky in order to make it stiff and its made from cast because its cheaper to manufacture. I'd say the primary benefit of billet in this application is the bling effect. :smokin:
Exactly, give me back my 30lbs in aluminum back onto the case and I'll save that 30 pounds by only bring 1 six pack instead of a case if need be.
 
There is nothing magic about "billet". In this application stiffness is just as important, if not more important, than strength. Remember, "strength" = how much load before the material physically fails and "stiffness" = how much the part deforms under load. When dealing with gear boxes, the tolerances are generally tight and thus stiffness is important. Once the housing deforms enough to cause binding of internal components then its game over. Sure, billet (and forged) may have a higher yield strength than cast but all have about the same elastic modulus (~10^6 psi for aluminum). This means that for a given geometry all will have the same stiffness, and will deform the same amount, up until the material reaches its yield stress. If the elastic deformation is enough to cause binding inside a cast housing then switching to a billet housing will change nothing. The only variable available to increase stiffness is geometry, i.e. thickness, etc. The Atlas is big and bulky in order to make it stiff and its made from cast because its cheaper to manufacture. I'd say the primary benefit of billet in this application is the bling effect. :smokin:
except the cast Atlas trail case have split before, the newer 'Pro' cases don't seem to have this issue. The stiffness is the same but the yield strength diff does affect how much a material will move for a given load. Otherwise thickness wouldn't matter either. That's why you can use cast and go thicker but lower yield. Or Billet and higher yield but less thickness and get the same strength.
 
By no means I'm I saying this doesn't have a place. The OP posted as a option for a ground up build and I don't feel this is the best option for that and only a handful of.guys should chose this case in that scenario, comp buggies, small buggies, etc. BUT that's my 2¢.
 
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