Great job so far, cant wait to see what you have in store.
May I ask, how long did you make your links and what did you make them out of?
11" is right where I would like to get my sons WK so his Monster Mutt body looks more at home.
Again great job.
Jeremy
At first I had the stock links in place with the Crawler King axle mounts. This puts the wheelbase right at 11". The credit goes to JohnnyShore and his Bounty Hunter (now Digger) build. If you buy the crawler mounts, they come with a few other misc pieces, and in that is a longer front steering link. I shortened it slightly to match up with the longer wheelbase. I had to drill a new hole down through it, because the portion I cut off got rid of the hole. I just drilled it slightly undersized so the metal steering rod would cut new threads. As for the top links, you'll need to cut about a 3/8" spacer to put in between the link and the axle mount. You'll also need about a 3x30mm screw to put it back in place.
As for the new 4-links, I wanted something that looked more like a 1:1. Here's what I used.
I used the Traxxas LXHGB7 rod ends.
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXHGB7&P=M
The ball is 3mm just like the WK, and the body takes 4mm threads. I ordered a 3 meter stick of 4mm rod from McMaster, along with 3ft of 1/4" x 0.035 wall aluminum tubing to make the links. The aluminum tubing slides right over the 4mm rod perfect. Here's the dimensions on the links. I wrote all this down because I have to duplicate this for my sons when I get mine ironed out.
Lower links: 4mm rod cut to 3-3/4", aluminum sleeve cut to 2-15/16"
Upper links: 4mm rod cut 3-1/4" (+ another 1/64 or 1/32), aluminum sleeve cut to 2-7/16"
The Traxxas rod ends aren't quite as wide as the stock ones, so I also cut about a 1/16 to 1/8" long piece of the aluminum tubing to take up the extra space.
I found on a crawler forum that the little triangular axle link mounts from a TLT work perfect for the upper 4-link mount. No mods required.
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXGKG9&P=7
This puts the wheelbase right back at 11". There were a few little tricks/hurdles to overcome to make the links work. The bottom crossmemeber where the stock lower links attach has the ball made right into it. I used my Dremel to cut most of ball away so that the crossmember fits back in place snug with the Traxxas rod ends on each side. Then I just put the stock screws back in to hold it in place.
The top links are a little more tricky. There's not a lot of clearance between the new rod ends and the tranny on the front side of truck. I started with 3x16mm screws that I had to shorten to clear the tranny. Then if you do it just right, there's just enough room to push and squeeze a 3mm nylock nut in between the rod end and the tranny. If you use regular 3mm nuts without the nylon insert, they should be a little shorter and allow some clearance. You'll need to Loctite them though. There's more room on the upper back links, so no special cutting is required.
One thing to note though is you need to install some type of thin washer, (like a shim) between the upper rod ends and frame plates. The upper link holes in the frame plate are a little larger than the bottom (due to the way the stock upper link is made), and can allow the shoulder of the Traxxas rod balls to pull in. I had some thin aluminum that I drilled some holes in that would just slip over the 3mm screws, then cut out my own crude washers. This keeps the rod end from trying to pull into the frame plate when you tighten the screw.
Hope this helps.