All this talk about doublers got me thinking

[RockRanger]

How serious are you guys about buying one real soon. I could be talked into maybe spear heading a "group buy" on some but I would need some help on it. I would need someone to help with the CAD drawings and getting the measurements all figured out. I am sure I could find a place in San Diego to get the parts made. Who would be interested in this?

How much would you be willing to pay for one?

What rear Transfer Case would you want to use?

I already have a doubler and it is one of the best mods I have ever done to my truck. Just want to help others get this mod done. Plus I want to get some more people that will be willing to go wheel the hammers with me. I am getting Sick of Truckhaven.

 

[IZwack]

The biggest problem it seems (and the weakest point in the doubler) is the main shaft. So if you can find someone to custom cut a main shaft (from a blank, not from the original) thats stronger, then that would be golden!

 

[DB_1]

The price point would have to be in line with what the Toy guys pay or any plate you can get from Advance Adapters...$300-$400?

And then I would only consider it if you could get the shaft as well, like a package deal thing. With that said, I can't consider anything that involves money right now

As for T-cases, the 300 can be twin sticked and geared 4:1, or NP231 can also be geared to 4:1 and a 2Lo kit is available.

 

[RockRanger]

Only way to do it would be to make a new shaft and have it heat treated and all that fun stuff. That is part of the reason you need to make more then one to help offset the cost. I am thinking somewhere around 5-10 to make it work out right. This is just a guess on my part as far as numbers.

Not really sure if you can come in at the Toyota price point. They have cast adapters and probably have them made 100 or more at a time. Plus with the way there cases assemble it makes them easier to make then how a Ford one has to be made. Not sure if the market is there to make 100 at a time for the Fords.


What about $500-$550? (plates new shaft) shifter not included.

 

[cybergasm]

Interested

Like DB1 said 300-400 price range would be good.

guess 1350/54 but then again i'd be happy with any doubler combo that the majority comes up with.

kinda digging the NP231 with 4:1 kit

EDIT i can live with 500-550

 

[IZwack]

I think that 4:1 kit would be overkill with a doubler already in front of it. If you want to run the NP-231 with a 4:1 gear set, you probably dont need a doubler. In other words, you probably just need an adapter to go directly from the RBV transmission's tailshaft to the NP-231.

 

[Tbars4]

...Broke, interested, and subscribing...

 

[cybergasm]

I think that 4:1 kit would be overkill with a doubler already in front of it. If you want to run the NP-231 with a 4:1 gear set, you probably dont need a doubler. In other words, you probably just need an adapter to go directly from the RBV transmission's tailshaft to the NP-231.

So how did Brain get the NP231 in his Explorer? or is he running a 700r4 conversion too ? :scratch:

 

[IZwack]

So how did Brain get the NP231 in his Explorer? or is he running a 700r4 conversion too ? :scratch:

Brian as in BKennedy? If so, then yeah he has a 700R4.

 

[DB_1]

Seems like an adapter to (pick your fav t-case) would be the easiest route for the majority of people. Just bolt it up and your done.

Unless the 1350/1354 came ready to bolt in i.e. block off plate welded in and replacement main shaft in hand then most people might not be as interested.

 

[IZwack]

Seems like an adapter to (pick your fav t-case) would be the easiest route for the majority of people. Just bolt it up and your done.

I agree and I'm not trying to be the party pooper here but here are some speed bumps on the adapter route:

• VSS - speed sensors required for transmission shifts (97 and below Explorers)
• Output flanges / yoke differences

 

[cybergasm]

Brian as in BKennedy? If so, then yeah he has a 700R4.

yup your buddy

 

[DB_1]

I agree and I'm not trying to be the party pooper here but here are some speed bumps on the adapter route:

• VSS - speed sensors required for transmission shifts (97 and below Explorers)
• Output flanges / yoke differences

I'm sure the VSS could be figured out like using a speed sensor externally to read a reluctor ring mounted to the output somehow.

As for the flange/yoke differences, I guess you'd just have to pony up and get your rear d-shaft modded to work with the case. It may or may not have to be shortened because of the adapter anyways.

 

[RockRanger]

I think that 4:1 kit would be overkill with a doubler already in front of it. If you want to run the NP-231 with a 4:1 gear set, you probably dont need a doubler. In other words, you probably just need an adapter to go directly from the RBV transmission's tailshaft to the NP-231.

I disagree I have 3.4 x 2.48 x 2.48 x 4.88 = 102 to 1

With a 4:1 in the rear case: 3.4 x 2.48 x 4.0 x 4.88 = 165 to 1

When at the hammers there were a few times I would have liked more gearing. Also having the 4.0 gears to split the difference would be nice. There are times that being a bit lower then stock would be nice but with the doubler it is to low.