XB4 2016

[jonathan may]

I have a shock coller missing in my kit luckly someone at the track had a spare

[andoiwebb]

If anyone is missing any parts from the kit, let Xray & RCDisco know straight away and they will send you the parts. No point telling a forum, nobody on here will send you anything.

[BentKa]

Originally Posted by simonrhart

Interesting how you are running the sway bar front and rear also and quite thick at 1.8mm. Does the lack of top deck take away the steering on the '16? Some people have said the XB4 is very twitchy - I have to say I love it with loads of steering.

I also noticed diff oil is quite thick for increased grip too. I am running kit setup 8000 front and rear and run mostly on high-grip astro tracks.

Flex is different on the '16 with the harder side pods, longer chassis braces and lack of top decks.

This gives more overall grip in the car.

Altering of the shock positions, a-arms and moving the motor forward gives more steering.

We also run just the front steering brace and not the 2mm X top deck to gain more steering.

Running a slightly stiffer sway bar allows the shocks to be softer and more forgiving when hitting curbs and landing jumps.

Running the heavier front diff oil helps smooth out that added steering and puts down more power when pushing hard.

Outdoors on high grip astro we usually run 1.6-1.8mm sway bars and 10K for the diffs.

Bent

[Matt Butcher]

Bent

Wondering if you can help? For a really bumpy astroturf track what shock settings would you run on an XB416?

Thanks

[BentKa]

Originally Posted by Matt Butcher

Bent

Wondering if you can help? For a really bumpy astroturf track what shock settings would you run on an XB416?

Thanks

For bumpy tracks we've run the stock Xray pistons drilled:

F: 3 dot spring / 600-700cst oil / 2x1.5+2x1.1 pistons / 1.6-1.8mm swaybar / 2mm added droop

R: 2 dot spring / 450cst oil / 2x1.6+2x1.1 pistons / 1.4-1.6mm swaybar / 2mm added droop

Bent

[andoiwebb]

I ran mine for the first time outdoors today. Even with the standard motor forwards position it showed excellent traction from the rear on damp & sandy AstroTurf. I really do think it's the best 4wd on the market for performance & durability. Even concrete track markers couldn't stop it! Not that I hit any ��

[dMITIj]

what will ppl recommend for a pinion for a 13.5T?

[leestokey]

Hi all who's made the jump from the 15 to the 16 and how have you found it, is it any better my 15 has 3mm chassis and centre diff how's the new slipper

[andoiwebb]

I've run mine a couple of times now (indoor and outdoor) and it's been impressive on both outings. Time will tell, but I'm confident it's an improvement on the old car as it's had lots of development by Xray.

[steve_haskins]

Used the 16 once so far, awesome bit of kit, theres lots of little changes to the 15, the car just feels so easy to drive

[jonathan may]

what sort of oil and pistion are people going for for astro tried the 1.6 and 1.7 pistion feels to soft and If I want to use other brand of wheels with 12mm hex are different offset hexs needed

[andoiwebb]

I'd strongly recommend running the Xray wheels to get the correct offset, as all the aftermarket 12mm hexes seem to give the wrong offset. Xray now do 12mm hexes & wheels, they are also good quality wheels that acetone lots of times without deteriorating. Personally I don't like the 2x1.6 & 2x1.7 pistons for the uk as they give too much pack for our bumpy tracks. Kit 3 hole rear and kit 2 hole fronts work pretty well.

[jonathan may]

too much pack mine feels like non there at all

[andoiwebb]

What oils & shock positions? I'll be starting with about 500cst front and 350cst rear with the above pistons at Telford this Sunday.

[jonathan may]

think I put in 500 and 400 but have just orded trhe avid 4 holes pistions

[BentKa]

For astro with 2x1.6 and 2x1.7 pistons we use 750 front and 550 rear.

Swaybars front 1.6 to 1.8 and rear 1.4 to 1.8 depending on grip and how bumpy it is.

Bent

[jonathan may]

ok thanks whats the best option the 1.6 and 1.7mm pistion or the 4 hole option from the past post
F: 3 dot spring / 600-700cst oil / 2x1.5+2x1.1 pistons / 1.6-1.8mm swaybar / 2mm added droop

R: 2 dot spring / 450cst oil / 2x1.6+2x1.1 pistons / 1.4-1.6mm swaybar / 2mm added droop

[BentKa]

Originally Posted by jonathan may

ok thanks whats the best option the 1.6 and 1.7mm pistion or the 4 hole option from the past post
F: 3 dot spring / 600-700cst oil / 2x1.5+2x1.1 pistons / 1.6-1.8mm swaybar / 2mm added droop

R: 2 dot spring / 450cst oil / 2x1.6+2x1.1 pistons / 1.4-1.6mm swaybar / 2mm added droop

As noted in my earlier post we run those settings on bumpy tracks.

For an all round outdoor setup Malin prefers the Xray pistons drilled to 2x1.5+2x1.1 and 2x1.6+2x1.1 as the majority of the tracks we race on outdoors are bumpy

Indoors and on smooth tracks we run the 2x16 and 2x1.7 pistons.

Bent

[jonathan may]

thanks I have the avid pistions coming today that are the same holes as the ones you drilled

1.7 and 1.6 2x holes pistons with 750 and 550 oil for carpet ?

[OneKiwi]

Wheres Bayers setup from the Worlds?