All you guys that have anything constructive to say about building or using a wristed arm add it here. Pictures write-up's anything at all tech related to wristed arms.

After I get back from the Hammers I'll edit the bullshit I know will get posted and turn it into a sticky.

Good idea Matt.

Take what ever you want from mine
http://www.wt4wheeling.com/tech/wristfront.htm

Quinn's
http://web3.foxinternet.net/venom9/radius.html

Lee's
http://www.lonestar-ebc.com/content/tech/fabrication/wristed_radius_arm/lee_n_wristed_arm.htm

WOW 51 views no one has to add any more info? :D, Come awn!
Ohh i know

I want to make the Locking Bolt a 5/8 so you can use a standard trailer hictch pin, the 3/4 and larger ones from the hardware store were made really cheesy
So a 5/8 locking pin and a 3/4 or 7/8 piviot bolt

I forgot about this guy's site, he is a little strange but likes goats so he is ok in my book :D

http://greatnorthern.net/~fearme/tech/page2.html

http://members.aol.com/stknrdr/FAQ.html

There has to be more out there.

:zzz: wake up fawkers:flipoff2:

Great information posted so far, but I saw no mention on Mark's site to Coby Hughey, who , along with Donovan ?, are the inventors of this concept. I think his website is:
http://www.vintagebronco.com/coby/twisterarm/

Just think if a faq is going to be put together, then credit needs to go to the original inventors.

a twister arm and a wristed arm are 2 different animals, i have a little thing about coby's i plan on adding to mine, just don't have the time

Originally posted by ARokCrwlr
Great information posted so far, but I saw no mention on Mark's site to Coby Hughey, who , along with Donovan ?, are the inventors of this concept. I think his website is:
http://www.vintagebronco.com/coby/twisterarm/

Just think if a faq is going to be put together, then credit needs to go to the original inventors.

I came up with the wristed arm about 6 years ago. At the time I worked at a CAT dealer and I assembled a ton of D9 dozer blades. So my buddy owned a Bronco and he was trying to get it to flex better. So we got to talking about the bronco radius arms and then I thought it was just like the CAT dozer blade arms which will articulate from side to side. So I looked at how it worked and applied that to the Bronco arms. It was a very simple concept and it works really well. That is the story on how the wristed arm came about. I am know working on putting the wristed arm principal onto my blazer because it works so well and you can pin it and have less body roll on the street.

Dual wristed arms?
I know on street this could be a very bad thing, as you'd loose most braking control? But at low speed rock crawling, would this be a good thing, Maybe pinning one for steep descents? Would it be more of a hassle then a good thing?

I realize they're different (mostly in name), but the concept is the same. They're all wristed arms-it's the concept that they brought forth to the wheeling community. That's all I'm saying.

Originally posted by big78bronco
Dual wristed arms?
I know on street this could be a very bad thing, as you'd loose most braking control? But at low speed rock crawling, would this be a good thing, Maybe pinning one for steep descents? Would it be more of a hassle then a good thing?

You dont need to wrist both because just one provides tons of flex. Besides wristing both would cause problems with caster, steering, and not being able to control the axle. People have added tons of flex by going to a wristed version of the radius arm.

Originally posted by Donovan


I came up with the wristed arm about 6 years ago. At the time I worked at a CAT dealer and I assembled a ton of D9 dozer blades. So my buddy owned a Bronco and he was trying to get it to flex better. So we got to talking about the bronco radius arms and then I thought it was just like the CAT dozer blade arms which will articulate from side to side. So I looked at how it worked and applied that to the Bronco arms. It was a very simple concept and it works really well. That is the story on how the wristed arm came about. I am know working on putting the wristed arm principal onto my blazer because it works so well and you can pin it and have less body roll on the street.

If you're the grand daddy of wristed arms, does that mean we should call you grandpa?

When it comes to the history of the wristed arm, I've heard your name and a few others thrown around. You're the first one that's actually stepped up and claimed responsibility for this madness though. Sounds legit to me. Thanks Donovan.

Hard to believe it took so long for the idea to come about.

I'm actually going to try and write up something constuctive for this thread, but I've haven't managed to sit down and do it. I might try to make webpage for the Bible or something with as much info that I can dig up. This thread is a good place to compile all the info though, since I'm clueless when comes to this tech stuff.

I have really enjoyed the articulation since the installation of my wristed arm. A friend of mine was nice enough to sell me his prototype which uses a tractor spherical bearing for the hinge part. I can pin it and it drives tight in the turns, and un-pinned makes the Bronco sway alot more, but awesome articulation for stock Bronco suspension. With the wristed arm, 5.5 WH coils,5.5 rear leafs, 9014 RS9000 with hoops, it goes up any ramp at least 1000.

This is a pic of Mike's truck. He is the one that built mine:
http://www.emotoman.com/axlealley/axle_kea14.jpg

This is a pic of my Bronco:
http://www.emotoman.com/axlealley/AxleAlleyTD_12.jpg

With a fork lift we lifted the front, then the back and both heights were identical. Makes for a very balanced suspension. I think anymore flex would cause me more problems in other areas.

Here's a pic of Mike's arm just before install. It's been on my rig for over two years now.
http://broncosport.alloffroad.com/cgi-bin/i/Suspension/P6160004.JPG

If you need more information, just hollar. Thanks for the awesome idea Donovan!

I agree with Motoman. The articulation from this mod is amazing. I have one of the few arms that Tom Boyd built and also one of Coby's Twister arms. Sometimes there's too much articulation (like while off camber), but in general it is a great mod. I too thank Donovan for a great idea and Coby for pushing the concept to the early bronco community.

Having said all that, what kind of information do you guys want in the faq. All of the designs seem to work well - spherical bearing, through bolt, etc...

speaking of twister arms, I contacted BCbroncos about purchasing some about 6 months ago, and they said that they are not available at this time. It still says that on their site. What gives?

They are going through machine shops, the one that he was using saud go #$# self bascily, rumor said he got another one to mass produce them so they should be out agani soon

cool. I can't wait. I showed a pic of them to one of my buddies and he said that htey look like tinker toys on steroids.:eek:

Originally posted by ARokCrwlr
I agree with Motoman. The articulation from this mod is amazing. I have one of the few arms that Tom Boyd built and also one of Coby's Twister arms. Sometimes there's too much articulation (like while off camber), but in general it is a great mod. I too thank Donovan for a great idea and Coby for pushing the concept to the early bronco community.

Having said all that, what kind of information do you guys want in the faq. All of the designs seem to work well - spherical bearing, through bolt, etc...

I've been the one building them for Chuck and I haven't produced any in a long time. I'm going to turn over production to BC Broncos; they'll make them even better than I did and I'll maintain design control. It's a good setup, but it deserves someone with more time to produce them than I've been able to give them. It isn't BC Broncos fault that that haven't been available, it's been mine.

HMm guess i got my info wrong, i though BC was already farming them out to people