Holy Roller's XR-10 Build

[MattH]

I generally don't read build threads, but I have skimmed quickly through a few of them. This thread, however, is impressive. Decent photos, good details, no bs, solid info, etec, etc. If you ever want to write articles for a magazine, let me know.

[Omikron99]

realy awesome build thread. can't wait to see it getting continued.

[setecastronomy]

Originally Posted by Holy Roller

You will notice that knuckles have an angled king pin. This is to reduce scrub radius. So when installing the out knuckles there is only one way they can be installed.

I cannot easily figure out how it works. Can you be more precise on this ? Is it something similar to camber angle ? Which is the 'scrub radius' ?

Thanks
Filippo

[BENDER]

Looking good Becky!

[Holy Roller]

Originally Posted by setecastronomy

I cannot easily figure out how it works. Can you be more precise on this ? Is it something similar to camber angle ? Which is the 'scrub radius' ?

Thanks
Filippo

Here is a good explanation that, for the most part I pulled from Wikipedia:

The kingpin inclination is to set the scrub radius of the steered wheel. This is the offset between the tire's contact point with the road surface and the projected axis of the steering down through the kingpin. If these points coincide, the scrub radius is zero. Zero scrub radius is possible without an inclined kingpin, but requires a deeply offset wheel so that the kingpin is at the centerline of the wheel. It's much more practical to angle the kingpin and use a less offset wheel, which also gives the self-centering effect.

[ctracy]

very impressive. must have taken almost more time for her to post the pics and write up than it does for the actual build. thanks for taking the time to do this. looking forward to more.

[Holy Roller]

This next section will cover Bags C and D, the assembly of the rear axle.

Here is a photo of the contents in Bag C.



Once again I layed all the parts out that were required for the next couple pages of the instuctions.



Here is the parts layed out in order of assembly for the gear shaft for the rear axle.



You slide the pin into the hole in the gear shaft and slide the drive gear onto the shaft over the pin, then you secure it with the e-clip.



The next step was to install the two flanged bearings into the gear case plate and slide the gear shaft through the forward most bearing.

[bigstu]

Originally Posted by setecastronomy

I cannot easily figure out how it works. Can you be more precise on this ? Is it something similar to camber angle ? Which is the 'scrub radius' ?

Thanks
Filippo

This diagram shows what scrub radius is.
With the pivots straight up and down, as on the AX-10 axle, the scrub radius is huge. This means more steering effort is needed.
Angled pivots decrease scrub radius and steering effort.
Also means wheel selection and hub offset is critical.

http://www.freepatentsonline.com/6532062-0-large.jpg

[Holy Roller]

Next you install the idler gear. NOTE: The idler gear must be installed with that arrow on the idler gear facing the gear case plate.

First you slide the pin through the gear shaft, slide the idler gear on with the arrow facing outward, and secure the idler gear with an e-clip.




The next thing you want to do is to install the gear case plate, with the gear shaft installed, to the front axle case cap. Make sure you install the bearing onto the gear shaft before bolting the gear case plate to the front axle case cap.





Note the bearing installed on the gear shaft and how it seats into the case cap.



Now it is time to install the transfer gear and the third flanged bearing.



Install the stepped gear into the third flanged bearing.



Now install the second idler gear. When installing the second idler gear onto the transfer gear remember to install the pin before seating the idler gear.

[Holy Roller]

Before proceeding with the assembly, now is the time to lube the gears with the gear lube provided in the kit.



Now it is time to install the gearbox housing and gearbox cover over the gears.



First the gearbox housing.



Do not forget to install the M3 Nylon Locking Hex Nut before installing the gearbox cover.





Install the three bearings into the gearbox cover.



Then install the gearbox cover.

[flapjack]

awesome build thread becky i cant wait to see it out at the rocks....tom gonna throw down some evil paint?

[Holy Roller]

It is now time to install the pinion on the motor and the motor into the rear axle gear case. Again I used the 14 tooth pinion that was supplied with the kit.

Make sure that the pinion is installed to where the edge of the pinion is at the edge of the stepped gear.







Install the access cover and your gear case is complete.

[ARC MotorSports]

Stunning post! Keep up the good work - I'm really enjoying following along.

[Holy Roller]

Originally Posted by flapjack

awesome build thread becky i cant wait to see it out at the rocks....tom gonna throw down some evil paint?

Here's the link to Tom's piant job in progress

Holy Rollers Axial Hardline Crawler Body (Paint Process)

[Brandon]

Great job on the build so far Becky

[TEAM DEBEAD]

Originally Posted by MattH

If you ever want to write articles for a magazine, let me know.

Sweet, Becky! Let's see some Rock Candy writing for RCCaraction

Awesome build. With step by step instructions like these, I feel much better about having to build mine. All I've ever had are ARTRs or RTRs. I was a bit nervous about building one from scratch.

Thanks for the confidence boost!

[Holy Roller]

Now is the time to open Bag D.

Here is the contents of Bag D.



Once again I have seperated all my parts in the Bag D to match the steps in the instructional diagrams.



The next step is to install the rear axle gear case assembly to the upper rear axle case.







It is time to assemble the final gear. The final gear consists of a final gear and two bearings. NOTE: The final gear is directional and needs to be installed in a certain direction. Pay attention to the instuctions for the proper installation proceedures.




You will notice the difference from one side to the other.



You will also need to install the rear axle shafts at this time. NOTE: The rear axle shafts are two different lengths. Make sure you install the short shaft to the short side and the long shaft to the long side.



At this time install the rear axle case plug



NOTE: the rear axle case plug is installed with the tappered side on the outside of the case.

[Holy Roller]

Now install the lower axle housing.



I set the parts out according to the instuctions for the final rear axle assembly steps.



I installed the lower rear axle housing with the provided hardware. NOTE: Make sure you take the time to review the instructions carefully. There are a few different length of screws that need to be installed and you will want to make sure you are installing the proper length and size fastener.







Next is to install the rear axle plate. Be sure to install the bushing provided under the most outboard mount screw.





It is now time to install the straight axle adapters.

First thing is to place the bearings onto the the rear axle shafts.



Align and slide the straight axle adapter onto the assembled axle housing. NOTE: Make sure that the screw hole on the adapter is aligned with the hole in the rear axle housing.



Repeat for the other side.



Install the 4 screw provided to hold the straight axle adapters into place.



The rear axle is completed.

[Omikron99]

did you use loctite on all screws or does the manual give advise on where to use some? as for the grease, did you only lube the gears in the gearbox and nothing in the axles?

[Holy Roller]

Originally Posted by Omikron99

did you use loctite on all screws or does the manual give advise on where to use some? as for the grease, did you only lube the gears in the gearbox and nothing in the axles?

Locktite was used on the essential screws. The instructions direct you on were the locktite needs to be placed. Thread lock is provided in the kit as well. As for the grease I installed in on all the gears. The directions do not tell you to grease the final gear but I put grease on them to be sure that all the gears were properly lubed.