Hey Fred, my 'puter isn't working right with this forum so I couldn't quote the bits I wanted to, but please explain a bit more about the doubler. Is that similar to a Klune doubler? Or is it a re-make of what's in the NP231/ or d300 (couldn't figure out which or if it's part of both) to add a doubler. For me 1:1 is great for sand, 2.72(stock NP231) is great for most trails, but I'd really like 4:1 or lower for some of the crawling if I could do it w/ only 1" taken from the drive shaft length. I can't handle much more angle in the drive line w/ out rebuilding it again to accommodate.
Thanks,
- C
Yeah it's pretty much the same as a Klune-V doubler as it uses a 231 Planetary to offer the reduction but doesn't have the heafty $1500 price tag <img src="/forums/images/graemlins/scared.gif" alt="" /> it runs about $500 for the kit and whatever other costs associate with a D300 rebuild (probably needed on a 25-30 year old t-case) and other misc costs like shifters for the D300 and what not. Below is a link with a basic explanation of a 231 Doubler, there are two kits on the market that I know of but the link below is for the more complete kit. A 231/D300 doubler is within about an inch or so as the stock length of a 231 being that the D300 is significantly shorter than the 231. You could do a 231/231 doubler but that's really not as appealing because that combo would add around 7 inches to the overall assembly plus you would be putting DOUBLE the reduction on the second 231 and the fact that it's a chain driven t-case it probably wouldn't last that long. Let me know if you have any other questions but the link below is pretty self explanatory, hope this helps <img src="/forums/images/graemlins/cheers.gif" alt="" />
231 DOUBLERFred R.