Lower gears for NP205???

[RoverMan]

does ANYBODY make these???? i would use a doubler but the combined length would be too long for my wheelbase. any leads appreciated...

[scoobydann]

ive been told the case it too close to the gears to make the gears any bigger, steve watson from www.OffroadDesign.com can go into more detail

[KrustyKruiser]

In a word, no. Nada. Zip. Zilch. Negatory, etc. Well, you get the picture. Nobody makes lower gears. You can go with a Dana 300 (stock 2.6 low ratio) which is not quite as strong, and convert to a Terra Lo kit (4:1 low range) for about $800. Or go Atlas for about $2000, which is stronger than the 205, and has a 4.3 low range.

[RoverMan]

The D300 wouldnt be a bad idea, but there is the slight problem that i need something to withstand 500 ft lbs of torque from a 454... heheh the atlas would be great, but too expensive at this point. i was hoping to get some low gearing for under 1k in my NP205... i guess ill have to work out a way to fit that doubler in there after all <IMG SRC="smilies/pissed.gif" border="0">

[BIGRIG]

The doubler has been redone .....gen2 so now the whole kit and kaboodle is the same length as the 203 transfer.

[RoverMan]

reading ORD's site, it is 6" longer than the standard 203. ill have to run a few more measurements.

[RoverMan]

reading ORD's site, it is 6" longer than the standard 203. ill have to run a few more measurements.

[RocnWilly]

i'm using the Klune-V crawler box with the 2.72 gears. it is slightly more than $1k but less than the Atlas. list price is $1895 but i've found it for as low as $1600. the Klune-V/205 combo adds ony 7.5" length. it does give you three low gear ratios that the doubler and the Atlas do not. you will have a 2-1, 2.72-1, and 5.1-1 low gear ratios. the 2.72 david is rated for 1350 ft/lb of input torque so no problems with big blocks. the 4-1 box is good for 550 ft/lb of torque and that would give you even lower gears 2-1, 4-1, and 8-1 low ranges.
for the money and the gearing advantages and minimal driveshaft problems i think this is the way to go.
just my 2 cents worth

[Grim Reaper]

Originally posted by Junk Collector:
<STRONG>reading ORD's site, it is 6" longer than the standard 203. ill have to run a few more measurements.</STRONG>

Call and talk to Stephen at ORD. He hasn't updated the site for the new version of the doubler. He can tell you off the top of his head what the lengths will be. Last time I talked to him he said the new doubler with the TH400 205 was able to run the stock 203 rear shaft with no modification. The front shaft would need to be lengthend.

[1BDYJ]

run a heavy duty output shaft in the 300 at about $650.00 its the same output shaft as the Atlas and you still get 2.6:1 ratio of the 300 vs 1.9 of the 205.

[reddwarf]

That is incredibly harsh. <IMG SRC="smilies/eek.gif" border="0">

[reddwarf]

Aw fawk! I can't read! They got me too!

Now I remember why I don't come here anymore.

And where the hell is the Flipoff2 smilie?

This site is really going downhill.
Well, how 'bout a regular ol <IMG SRC="smilies/flipoff.gif" border="0">

[onetoncv]

i hear in the wind that a company has put up 50,000$ to make a set of gears for the 205 case 3.7 to 1 ratio- and there going to do it- time will tell- Jess

[mj]

hey Jesse,
give those guys my email address
I WANT EM!
lets see doubler x 2, low 205s x 3.7, both in low x 7.44
would be just as cool to me if they built low gearset for the 203 range box to get 3 distinct low ranges

[onetoncv]

the guy i heard this from is in canada - he has connections - i'm sure it will take them a while to get the first proto types out - but when or if they do- look out i'm sure all 500,000 205-case users will want them- i hope i'm along the first few to have it- man my 1.96-1 sucks - thinking of nos for those mud trips- Jess

[mj]

N2O
use a full throttle activation switch and an rpm window switch to trip the relays and it would be idiot proof

[Ken Bernstein]

With ova 500 ft/lbs of torque I say get it awn with the 205 fuck it

[Boss]

Originally posted by KrustyKruiser
Or go Atlas for about $2000, which is stronger than the 205, and has a 4.3 low range.

Stronger than a 205?? Yeah right
That's why they're not recommended for fullsizes right

[Abba]

Im whith the BOSS.

[Stephen]

Doubler kit overall is the same length as a 203, and 6" longer than a 205 by itself. The 205 has a couple hundred ft-lb more torque capacity than an atlas, basically NO durability problems with a Doubler kit.
I'm interested in seeing deeper 205 gears, not sure how to fit them in the case. I've heard several guys making noise about building them, but not sure it's going to happen till I hold them in my hand.
Cost will probably be a big issue, if you have to replace all the gears in the case, including the input (with 6 variations) it's going to be pretty pricey.

[1TONTJ]

We got the np205 in. Now the engineer's got to look at it to see if it can be done. If it can be done, then it will be done.

I'll keep you updated.

Phil
Canadian with Connections

[HDDAVE]

if it can be done, I WANT THE FIRST SET

[onetoncv]

nice to see phil chime in - Jess

[KrustyKruiser]

Originally posted by Boss


Stronger than a 205?? Yeah right
That's why they're not recommended for fullsizes right

Originally posted by Abba

[B]

Im whith the BOSS.

[B]

Sorry folks - statement retracted - I must have been thinking about the extra beefy outputs that are now available for the AtlasII.

[Donovan]

Originally posted by pjensen
We got the np205 in. Now the engineer's got to look at it to see if it can be done. If it can be done, then it will be done.

I'll keep you updated.

Phil
Canadian with Connections

I have looked at putting lower gears into a 205 and I just can't see how it can be done unless you cut the case to put the gears in. If someone can do it I will buy them a case of there favorite beer. First off let see how the 205 are made. The input gear is 25 teeth and the output gear is 35 teeth. Now on the idler gears they are 35 and 25 teeth. So 35 times 35 is 1225. Divide 1225 by 25 teeth and then by 25 teeth again you will get 1.96 to 1 gear ratio. So now that is out of the way. To get a lower gear you will have to increase the teeth on the large gear. The OD of the large gear now is 6.170" and the hole that you stick the gear thru in the 205 case is 6.25". So you only have enough room to make the gear .080" larger. That is not enough to get one larger tooth in there. But for argument sake you made it one tooth larger, then you get 36 times 36 and then divided by 24 teeth and then again buy 24 teeth you will get only 2.25 to 1 low range. So if we are look at 3.44 to 1 gear ratio then we will need a gear about 6.875 in diameter. There is not enough room to to machine the case larger. So I just don't see how you can do it. You can change the tooth pitch from 6 pitch to maybe a 10 pitch and get around 2.8 to 1 but the is not enough. Also a 10 pitch gear is a pretty small teeth. Sorry to bore you all but I want to tell Phil now what I have found out and maybe help them out a little.