Jeremy's Sporty

[JeremyH]

All ya need is little guy with chops & wearin plaid shorts lickin the windows :mrgreen:

Best of luck next weekend brutha. You runnin all classes to shoot for that overall?

You find one and I'll put it in there! "thumbsup"

You know I am running all classes.....I maximize my fun! :lol:

What's this rig weigh now, and where's it's balance point?

It's right at 4lb 12oz...balance point is about 1/4" in front of the front lower link mounts.

 

[ROWDY RACING]

It's right at 4lb 12oz...balance point is about 1/4" in front of the front lower link mounts.

Yeah mine likes to be a little extra front heavy too.

 

[Stax]

I think im going to build a sportsman rig to run at local meets!!

 

[TheKeltz]

NICE!!

Sent from my HTC One X using Tapatalk 2

 

[helhedded]

Hey JermJerm,

I'm about to perform the XR10 mod on my Shafty axles and under current plan I'll be using Wraith knuckles just like you are. Are there any pros or cons that I need to know about with this setup? I am a noob to the XR10/Wraith stuff.

 

[JeremyH]

Well, the wraith knuckles will give you more clearance and allow for more steering angle. If you are planning to run the tie rod like I did, install everything FIRST before you set the caster.....you need to make sure the tie rod will clear. "thumbsup"

The cons....the stock XR shafts will start to loosen up after a while and get slack in them....:evil:

 

[helhedded]

Well, the wraith knuckles will give you more clearance and allow for more steering angle. If you are planning to run the tie rod like I did, install everything FIRST before you set the caster.....you need to make sure the tie rod will clear. "thumbsup"

The cons....the stock XR shafts will start to loosen up after a while and get slack in them....:evil:

That's ok, I just want to widen out the truck and I'll worry about inner axle longevity later.

I figured that I could stuff a little more wheel around the wraith stuff. thanks, Jabroski hammer-Hank Hill-Dracula lookin' ass-mofo "thumbsup"

 

[JeremyH]

It's not really the shafts that are a problem, it's the u-joint/cross in the center. It's starts to get loose after a while. If you take a bit of time and make sure it is centered to begin with, you can stave off that problem....for a bit.

 

[runs_wscissors]

Your steering set-up looks great. Just to confirm your front axle assembly includes;

CreationFab Delrin Wide Splined Tubes
Vanquish Wraith Knuckles w/standard steer arms
Vanquish Wraith Chubs
XR drive shafts
XR length Tie Rod - do you have a recommended brand/source?

You also mentioned setting the caster on the tubes with the tie rod in place so you can check the clearances in turn. Are you shooting for a particular caster setting as well?

I did notice in one of the pics a small shim under the steer arm, which I assume was to address a close condition somewhere.

In the earlier days you had a set of Vanquish SLW V4 rims mounted up. I would like to try a set of those wheels and was wondering what hub spacing you used? Any issues running this wheel? I really like the looks of them all mounted up.

One final question, do those Sedonas come in various compounds? If so which do you recommend.

Thanks for your help, I'm just trying to grasp all the details before I make any part orders. I really appreciate your build thread as it has been very helpful.

 

[JeremyH]

Your steering set-up looks great. Just to confirm your front axle assembly includes;

CreationFab Delrin Wide Splined Tubes
Vanquish Wraith Knuckles w/standard steer arms
Vanquish Wraith Chubs
XR drive shafts
XR length Tie Rod - do you have a recommended brand/source?

Yep, that looks correct. However, if you can spare the extra $$, I'd recommend at least the VP shafts. The stock XR shafts will get sloppy pretty quickly. I just got my VP shafts in and should have them installed soon.
Also, the tie rod I used is the Chaotic Crawlers XR bent tie rod for the VP setup.

You also mentioned setting the caster on the tubes with the tie rod in place so you can check the clearances in turn. Are you shooting for a particular caster setting as well?

Well, I actually set the caster first, then added the steering, but I just got lucky. Others have messaged me about the setup saying that the tie rod wont work and I think it is because of their caster setting.

I did notice in one of the pics a small shim under the steer arm, which I assume was to address a close condition somewhere.

Yeah, that is just one of those Traxxas Revo Pushrod Spacers...they are like 2.5mm or so.

In the earlier days you had a set of Vanquish SLW V4 rims mounted up. I would like to try a set of those wheels and was wondering what hub spacing you used? Any issues running this wheel? I really like the looks of them all mounted up.

I cant remember which hub, but I am betting it was the smallest and IIRC, I used a half size spacer.

One final question, do those Sedonas come in various compounds? If so which do you recommend.

They only come in white...and they work well. "thumbsup"

Thanks for your help, I'm just trying to grasp all the details before I make any part orders. I really appreciate your build thread as it has been very helpful.

No problem. Good luck with your build. "thumbsup"

 

[HARDKNOCKZ]

I'm sure you done did answerfy diss already but are you runnin Tomy's Nordic Crawler knucky weights on this thang? I know you had the blinged out fender washers befo but do believe I see some brass behind dem thar wheels.

 

[JeremyH]

I'm sure you done did answerfy diss already but are you runnin Tomy's Nordic Crawler knucky weights on this thang? I know you had the blinged out fender washers befo but do believe I see some brass behind dem thar wheels.

Yep."thumbsup"

 

[JeremyH]

A few pics of the rebuilt front end:

Steering seems to be the same as what I had before:

These VP CVDs are quite nice. They use the same bearings as the XR shafts and the same hub nut...

 

[rangercat23]

Oh yea vp!!!

 

[JeremyH]

We'll see how they do. I plan to put a few packs through this truck today after work..."thumbsup"

 

[runs_wscissors]

A few pics of the rebuilt front end:
Steering seems to be the same as what I had before:
These VP CVDs are quite nice. They use the same bearings as the XR shafts and the same hub nut...

Thanks for posting the steering pictures. I am still trying to understand the differences in the XR and Wraith VP knuckles. Other "XR mod" threads use the XR knuckles, with the double rear steer arms, and connect them together with a BTA tie rod and then drive the front of one knuckle with the servo. Did you consider this option or was there something compelling about the high front steer of the Wraith knuckles? Some posts say the Wraith versions have more steer, but it is not clear why. The BTA route seems like you might get into the susp. links, drive components or shocks unless you have everything spot on.

I'm gathering that knuckle weights are being developed for the Wraith knuckles now that they are out. It seems like there are a number of options for the XRs already. I'm assuming finding weights would not be a problem either way.

With the XR shafts from VP did you have to cut and grind the long side or are they both the same length? I'd hate to screw up a $50 universal and would rather order two short sides if they are indeed different.

I'm sure this will all become much clearer when I have some parts in hand, but given the price of the VP components, they are not something that you just pick up extras of to play with. I am half tempted to get the axial plastic versions for layout purposes. Either way, thanks for posting your updates and info, it is much appreciated.

 

[JeremyH]

Did you consider this option or was there something compelling about the high front steer of the Wraith knuckles?

Yes, but I absolutely HATE having the tie rod down low. I dont like it on my XR and it's even worse on the sporty because it would need to sit below the driveshaft. Removing those double shear arms (like on the wraith knucks), gives the setup more steering as they would limit on the opposite sides. Also, the drag link mount on the wraith knucks sits up a bit higher.

I'm gathering that knuckle weights are being developed for the Wraith knuckles now that they are out.

Yep, the Nordic Crawlers weights are quite nice and will work with either XR or Wraith knuckles."thumbsup"

With the XR shafts from VP did you have to cut and grind the long side or are they both the same length?

Nope, they are a drop in fit. Took me about 10 minutes to install them. "thumbsup"

Either way, thanks for posting your updates and info, it is much appreciated.

Not a problem. Let me know if you have any more questions..."thumbsup"

 

[runs_wscissors]

Not a problem. Let me know if you have any more questions..."thumbsup"

Wow, super fast reply. This is like having my own help desk! This forum is an amazing resouce.

Ok, you convinced me to order the VP wraith chubs, knuckles, and universals (XR length). The delrin axle tubes to get me to the XR width are on the way.

With this collection of parts, what actually limits the steering? Do you have a hard stop somewhere on each knuckle(possibly the knuckle weight) so as to not over travel the universal? You only have to limit it in one direction I assume, since the wheels are connected through the tie rod.

Is the goal to maximize each wheel angle rather than trying to get some percentage of ackerman?

How does the scrub radius (distance from kingpin axis to wheel center in front view) at the wheel end change things? Your only option to tune this is with hub offset I gather, but it seems most people are looking for a particular track width (measured at outside to outside) or space for the knuckle weights. With modern car designs the scrub and hub offset are minimized to reduce the loads into the steering, of course these things are nothing like real cars.

 

[JeremyH]

Actually, the nut that attaches my steering rods to the knuckle arm contacts the c-hub which is my limiter (you can see where it hits the passenger side c-hub...there is a little white mark on the c-hub).

The scrub is minimal with this setup. This setup is nice when turning. Same reasons on these to reduce scrub....help to properly apply the torque from the servo and keeping the tire from sliding during a turn instead of pivoting about the center of the tread.

For some good reading on steering for these trucks, I started a discussion a while back that contains some excellent information and input from some intelligent and experienced people on this board.:
http://www.rccrawler.com/forum/general-crawlers/366295-rc-crawler-steering.html

 

[runs_wscissors]

For some good reading on steering for these trucks, I started a discussion a while back that contains some excellent information and input from some intelligent and experienced people on this board.:
http://www.rccrawler.com/forum/general-crawlers/366295-rc-crawler-steering.html

Given all of your help I decided to contribute to the steering thread. "thumbsup"