Josh's 2013 sporty build

[Joshie]

So i have decided to build a sportsman rig for 2013 from parts i have laying around, also using some bits that were pinched from my scaler jeep which doesn't get used enough to justify itself.

first off here is a look at the parts i already have

gatekeeper chassis and link kit

holmes hobby brxl
scx10 diffs with o/d front & u/d rear
scx transmission with rrp internals and vp dig which has been removed
HH 45T torquemaster

first on the todo list was to lose the dig and add some m3 brass inserts to the trans housing and rebuild the transmission with Al screws left over from my xr agent build


Then to eliminate the slipper clutch i drilled through the existing bolts holding the spur gear in place and tapped the slipped assembly to end up with this


Also added a bwd motor sav'r i had laying around and this completed the transmission.

The rear axle out of my scale jeep had the post cut off, luckily i had a spare housing that was unmolested, swapped the u/d r & p into the new housing added all Al screws and also drilled the posts and added m3 brass inserts aswell


Rear axle is now bolted upto the links,

shocks will be scx10 with creation fab spring retainers jeepindoug cups and mini t springs.
Front diff will rock VP xr10 knuckles creation fab premium wide delrin tubes o/d gears and the monster 7990 out of the scaler which will need new servo posts made for.

Thats as far as i can go until my creationfab order turns up.
Also i am on the look out for some gunnar mounts if anyone knows of any

Josh

[BLACKWIDOWAX10]

looks great

[Joshie]

Small update:

Nordic knuckle weights as on with 3 half rings per side
Creation fab beef toobs are in
Vp wraith chubs & knuckles
Vvds and vp locker
Waiting on my body and rear axle.
Electronics will be hitec 7990, brxl (decased shrinked) cc Bec set at 7.4

A few pics of the roller



Josh

[Joshie]

So I took this truck out for its first run yesterday all indications point to a competitive rig once tuned.
The truck is running around 60-70 mm skid height.
I am now sporting a d mount rear upper link mount

After driving it yesterday I found it lacked castor so I rotated the c hubs back one spline, I am also waiting on a set of 7075 steer arms from cw crawlers





Hoping get it tuned before the first competitive round of cANZ & also our local groups first comp

[filotr14lsdude]

Looks good man, mines nearly ready. Chassis will be here very soon

[Joshie]

Small update:
I have been enjoying driving this rig more than my pro rig lately.
I got some LCC rodends to lengthen the shocks if needed but for now I will be it at 68mm skid height until I have driven a comp with it.


I have made a couple of changes.

The short arms supplied with the vp wraith knuckles were hitting the axle housing limiting steering,
My solution to this problem is a set of CWcrawlers 7075 steering arms.



Which brings my steering to this:



Also after browsing a few threads on here i decided to give making cf tube links ago

First I made a jig using an old steel rule

Then cut the cf tube to length with a dremel and roughed up the ends with some emery paper

These links are 5mm od so the rodends where drilled out and then ca glued them to the tubes


These are the rear upper links, I will be epoxying and pinning the rodends also aswell as making a set out of 4mm od cf tube (misplaced my 4mm drill bit to drill the rodends)

I also figured its a new comp season so new tyres all round I have snipped two sets of boss claws for both this rig and my pro rig I just need to shave the sidewalls and mount them up.

[Nik6189]

Looking good joshie, sporty should be good this year!
Nik

[Joshie]

So I've been doing alittle more work with the cf links.
I have made 4mm links for both front and rear uppers, with the 4mm links I decided to go with epoxy as the adhesive.
This is the one I used

The front links are pinned and the rears soon to be also using 1mm nails

1150 pins for $3 is good value in my books
I made my front uppers shorter so I could get them on top of the link plate to gain some more separation at the axle.
This a a standard front upper link from the gatekeeper kit

And this is both front upper links made from 4mm cf tube

This puts the rtr weight at 1826g with my smaller 450 4s batteries.



Josh

[brazwewn]

Can you show a pic of the links pinned. In case I missed it where did you pick up the CF tube? I there a part number?

Wes

[Nik6189]

RTR without the rear wheels
Nik

[brazwewn]

Originally Posted by Nik6189

RTR without the rear wheels
Nik

Look closer, it is sitting on the rear wheels.

Wes

[Nik6189]

Damn I was trying to catch him out, you sure theres a motor under that shell..
Nik

[brazwewn]

Originally Posted by Nik6189

Damn I was trying to catch him out, you sure theres a motor under that shell..
Nik

I would go more with a calibration error myself. He probebaly adjusted the scale calibration and then set his truck up there.

Wes

[Nik6189]

sneaky idea, come on joshie..
Cant wait to check out how the links hold up.
Nik

[Joshie]

i will get a better photo of the pinned rod ends tonight.
i picked up the cf tube from an online shop in australia to cut shipping costs, it cost around $40au for 3 metres of 4mm & 5mm posted

josh

Originally Posted by brazwewn

Can you show a pic of the links pinned. In case I missed it where did you pick up the CF tube? I there a part number?

Wes

[Dowlo]

Joshie, Ive a nube question....why do u need to remove the dig. Can u have one on the rig but simply not use it in comps?

[EverettY]

Originally Posted by Dowlo

Joshie, Ive a nube question....why do u need to remove the dig. Can u have one on the rig but simply not use it in comps?

That adds more weight up high were you don't want it... So if you aren't going to use it at comps anyways there's no point in having it there which will make you have a higher COG

[Johnnysplits]

Where did you get the threaded brass inserts that you have in the trans and axle housings? What size are they? That's a great fix for stripped out holes!!

[Dowlo]

Originally Posted by EverettY

That adds more weight up high were you don't want it... So if you aren't going to use it at comps anyways there's no point in having it there which will make you have a higher COG

Ah yes. ....I keep forgetting about the COG, thanks mate.

[Joshie]

Originally Posted by Dowlo

Joshie, Ive a nube question....why do u need to remove the dig. Can u have one on the rig but simply not use it in comps?

the main reason i removed the dig is because this truck is sportsman class and dig isnt used, it could have been left in but the extra weight is a pain and i sold it to buy other parts.


josh