Same reason your RCI steering is knuckle in front of the axle J. The outside tire turns to the max while the inner turns a little less, it doesn't get into your shocks and links as much, and I have heard that it has a tighter turn radius from the steering man himself. "thumbsup"
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(MMM) Mini's Miami Moonbuggy
- Thread starter Mini
- Start date
JeremyH
I wanna be Dave
Well yeah, I realize that the knuckles are not zero ack, but I thought that all you guys ran those bent rods were running them BTA.
Thats what I'm trying to tell you. They did. Then they reversed them for the benefits that I said in the post above. "thumbsup"
JeremyH
I wanna be Dave
It seems like a zero ackermann knuckle would be the best solution to that issue. But what do I know? I am still not sold on these frail little toothpick axles.... :lol:
I thought that also and befor I swap to this setup I tryed it with RCbros knuckles and work great just was not what I was looking for, like 4xford said my turn radius was alot sharper with this setup than with zero ackerman.
TEDROCKZ
I wanna be Dave
Damn Mini! Hit me up at the Turkey Crawl. I'll loan you a few bucks to get some real drink. That stuff will kill ya!:lmao:
Damn Mini! Hit me up at the Turkey Crawl. I'll loan you a few bucks to get some real drink. That stuff will kill ya!:lmao:
View attachment 148812
Thats my Miami Moonshine :lmao::lmao::lmao::lmao:
86jeep
AKA 2G's
Looking good my friend "thumbsup"
Thanks to you sir "thumbsup"
xrra_tj
Rock Crawler
Looks good Mini can't wait to see it in action this weekend"thumbsup"
That makes two of us :ror::ror:.
Thats why am leaveing a day early to get some drive time on it."thumbsup"
Zero Ackerman and 50* of steering with 300's on my rig. Not sure how much you can possibly get 
!! SDS has got 55* lol. Insane! Ackerman in crawles if often looked at the same as a vehicle or off-road/on-road rc car, however crawlers can not be looked at in the same way.
If you have ackerman, either positive or negative, only one wheel will reach max steering angle, the other one will be less, always! With zero ackerman both wheels can go to max steering angle. Whats not taken into account is the addition of traction on the rocks, (AKA Scrub Radius) at zero the crawler steers easier. If your running regular knuckles and your tire with less steering has the most traction your crawler will almost always tend to follow this tire. Take into account a rig not running zero ackerman knuckles and digging up hill in high traction, the knuckle that is not maxxed almost always hops and slaps around causing negative and unpredictable results.
With zero ackerman whichever wheel has the best grip will be at max steering angle and the truck will seem to steer a little better in most situations, but also when digging you no longer have this slapping action which aids in predictable results as well as non broken parts. I first discovered this first hand when I initially built my berg and ran the RC innovations link with regular high steer knuckles. I snapped 2 300 pins from the slapping effect, mostly always on near vertical digs under throttle trying to move the rig left or right to get to a traction spot that I needed to continue the climb or clear a gate. After talking heavily with SDS he highly suggested trying zero ackerman knuckles which he told me would give me better steering and to eliminate this issue. I bought the knuckles and increased the width of the link and it truly was night and day. I got both things I wanted and needed badly.
I'm not trying to bash you or anyone, just trying to help inform. I have sat and watched SDS measure steering all day long to test his 300's in every situation and when it comes to steering I trust everything this man has said, but not only from his words, but it shows on the rocks as well.
On a great note, the rig is looking good, I want that chassis so bad, just don't want to touch my rig as its working so good, but I'm sure soon I'll add it to my arsenal. I too like a soft rig, however to soft and you find yourself in a hole and the rig just binds itself up to no end. Not sure what type of rock your crawling on in your area but we run alot of loose stacked rock and holes are a nightmare! Good to see I'm not the only one running a punk these days lol.
!! SDS has got 55* lol. Insane! Ackerman in crawles if often looked at the same as a vehicle or off-road/on-road rc car, however crawlers can not be looked at in the same way. If you have ackerman, either positive or negative, only one wheel will reach max steering angle, the other one will be less, always! With zero ackerman both wheels can go to max steering angle. Whats not taken into account is the addition of traction on the rocks, (AKA Scrub Radius) at zero the crawler steers easier. If your running regular knuckles and your tire with less steering has the most traction your crawler will almost always tend to follow this tire. Take into account a rig not running zero ackerman knuckles and digging up hill in high traction, the knuckle that is not maxxed almost always hops and slaps around causing negative and unpredictable results.
With zero ackerman whichever wheel has the best grip will be at max steering angle and the truck will seem to steer a little better in most situations, but also when digging you no longer have this slapping action which aids in predictable results as well as non broken parts. I first discovered this first hand when I initially built my berg and ran the RC innovations link with regular high steer knuckles. I snapped 2 300 pins from the slapping effect, mostly always on near vertical digs under throttle trying to move the rig left or right to get to a traction spot that I needed to continue the climb or clear a gate. After talking heavily with SDS he highly suggested trying zero ackerman knuckles which he told me would give me better steering and to eliminate this issue. I bought the knuckles and increased the width of the link and it truly was night and day. I got both things I wanted and needed badly.
I'm not trying to bash you or anyone, just trying to help inform. I have sat and watched SDS measure steering all day long to test his 300's in every situation and when it comes to steering I trust everything this man has said, but not only from his words, but it shows on the rocks as well.
On a great note, the rig is looking good, I want that chassis so bad, just don't want to touch my rig as its working so good, but I'm sure soon I'll add it to my arsenal. I too like a soft rig, however to soft and you find yourself in a hole and the rig just binds itself up to no end. Not sure what type of rock your crawling on in your area but we run alot of loose stacked rock and holes are a nightmare! Good to see I'm not the only one running a punk these days lol.
It's cool Will, like I said it just was not what I was looking for that's all. But your post will be very informative, and I run anything and everything that SDS makes for Bergs no matter the cost cause I know the time and effort he puts into these parts and offcourse he knows what he's talking about lol.
As far as weight and it being to light It came in at almost 5lbs flat I think anything below 5lbs is just way to light for my taste they look cool a$$ hell just nit for me. Oh I don't tune my rig down here I do my tuning at north locations cause there us noigthing down here I can compare to the comps I go to and anyone that knows me I love to travel lol.
Yea this will probably br the last year I run a punk 2 fxr's and a futaba will be my next big upgrade after driving with guys like Andy, Nick, Greg, Mike, Whoodie, Shane, & John to name a few those guys work magic on dual fxr's and a 4pk.
As far as weight and it being to light It came in at almost 5lbs flat I think anything below 5lbs is just way to light for my taste they look cool a$$ hell just nit for me. Oh I don't tune my rig down here I do my tuning at north locations cause there us noigthing down here I can compare to the comps I go to and anyone that knows me I love to travel lol.
Yea this will probably br the last year I run a punk 2 fxr's and a futaba will be my next big upgrade after driving with guys like Andy, Nick, Greg, Mike, Whoodie, Shane, & John to name a few those guys work magic on dual fxr's and a 4pk.
CRSMacgyver
RCC Addict
Looks good Mini. Can't wait to hang out this weekend my brother......
86jeep
AKA 2G's
All good but dont forget to run Zero knuckels you half to run a wider offset which makes you wider. To with Zero knuckels if you dont go wide enough you push the inside tire right into the shock and link at 52 degree's witch stall's the motor or just over works it. There's always a trade off Run Zero ackerman, Have a wider truck 11 to 11 1/4in and have alittle better steering scrub. Run ackerman and have a narrower truck 10 1/2in and have alittle worst steering scrub.Zero Ackerman and 50* of steering with 300's on my rig. Not sure how much you can possibly get
If you have ackerman, either positive or negative, only one wheel will reach max steering angle, the other one will be less, always! With zero ackerman both wheels can go to max steering angle. Whats not taken into account is the addition of traction on the rocks, (AKA Scrub Radius) at zero the crawler steers easier. If your running regular knuckles and your tire with less steering has the most traction your crawler will almost always tend to follow this tire. Take into account a rig not running zero ackerman knuckles and digging up hill in high traction, the knuckle that is not maxxed almost always hops and slaps around causing negative and unpredictable results.
With zero ackerman whichever wheel has the best grip will be at max steering angle and the truck will seem to steer a little better in most situations, but also when digging you no longer have this slapping action which aids in predictable results as well as non broken parts. I first discovered this first hand when I initially built my berg and ran the RC innovations link with regular high steer knuckles. I snapped 2 300 pins from the slapping effect, mostly always on near vertical digs under throttle trying to move the rig left or right to get to a traction spot that I needed to continue the climb or clear a gate. After talking heavily with SDS he highly suggested trying zero ackerman knuckles which he told me would give me better steering and to eliminate this issue. I bought the knuckles and increased the width of the link and it truly was night and day. I got both things I wanted and needed badly.
I'm not trying to bash you or anyone, just trying to help inform. I have sat and watched SDS measure steering all day long to test his 300's in every situation and when it comes to steering I trust everything this man has said, but not only from his words, but it shows on the rocks as well.
On a great note, the rig is looking good, I want that chassis so bad, just don't want to touch my rig as its working so good, but I'm sure soon I'll add it to my arsenal. I too like a soft rig, however to soft and you find yourself in a hole and the rig just binds itself up to no end. Not sure what type of rock your crawling on in your area but we run alot of loose stacked rock and holes are a nightmare! Good to see I'm not the only one running a punk these days lol.
Continuing with the ackerman discussion. Reverse ackerman is definitely the way to go, simply to keep the tires out of the shocks. Those of us running dual ESCs know how important the difference in speed of the axles are since we can adjust on the fly. When your tire hits any part of your suspension, shocks or links, the motor on that axle stalls out and takes a lot more power to spin. What this does is basically a rear dig. Not what you want when you have only fractions of an inch to negotiate a set of gates.
Now one will argue that on flat level ground without digging, a zero ackerman setup will steer tighter. This is true, however I have dig and I like to use it. I also can control the speed of each motor individually and this also helps in that situation.
Fact of the matter is that you have to try it on a well setup rig, once you do you'll go to a reverse ackerman setup too "thumbsup"
Now one will argue that on flat level ground without digging, a zero ackerman setup will steer tighter. This is true, however I have dig and I like to use it. I also can control the speed of each motor individually and this also helps in that situation.
Fact of the matter is that you have to try it on a well setup rig, once you do you'll go to a reverse ackerman setup too "thumbsup"
Well said and very true. I first noticed Andy's setup at Nationals and I was intrigued. I played around with the idea and I actually ran a toe-in setup at Crawlapalooza this year. The setup did surprisingly well but the toe-in was a little difficult to handle on side hills. Greg's rev ackerman tierod is even better with it creating that same steering but without affecting the toe. This new setup just kills.
Your rig is looking good, Mini!
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