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Old 01-05-2016, 12:13 AM   #9886
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Originally Posted by MikeR View Post
Hi All!

There seems to be A LOT of consternation the past few weeks regarding 12mm hexes and width so for more clarity I went and measured the stock XB4 12mm hex wheels vs standard 12mm hex wheels (Associated, Losi, Hot Bodies).

If you recall we were the first to release 12mm hexes for the original XB4 and so established our hex width for the available wheels of the time (Associated/ Kyosho). Later, more front wheel options came out via the D413 and 22-4. The Associated/Losi/Hot Bodies/Kyosho seem to have industry standard off set in the rear (makes it easy for handout rear tires for Reedy Race etc!) so we have based our newer hex widths for these wheels.

The confusion comes from the fact that the Xray wheel is a different off set than the other brands listed. The Xray wheels makes the width 1mm wider at each wheel. So if you go by that then please use this list to give you a measurement.

1456 makes the rear wheel width about 243mm wide with AE/HB/KYO style wheels. XRAY 12mm wheel width is about 245mm wide.
1408 makes the rear wheel width about 247mm wide with AE/HB/KYO style wheels.
1409 makes the front wheel width about 247mm wide with Kysosho 4wd front wheels.
1409 makes the rear wheel width about 243mm wide with AE/HB/KYO style wheels. XRAY 12mm wheel width is about 245mm wide
1410 makes the front wheel width about 243mm wide with B44.2 4wd front wheels.

So if you want 245mm width then you simply need Exotek 1456 rear hex set and 1409 front hex set along with Xray wheels.

I'm happy to use Associated style wheels though- makes life easy when you are at the track and wish to borrow a set of tires from a friend and it will be much easier on the wallet. And please remember- the difference between 243mm and 245mm is ONLY 0.08%!. Really not worth stressing over.

Hope that helps!

Best
That last statement is absolutely wrong

The different width wheel hexes are used as a tuning option to add or remove both steering and traction from the front or rear of the car.

Going wider or narrower by just 0.75mm pr. side for a 1.5mm change of total track width makes a very noticeable and significant difference in how the car react and feels.

I know you are in the business of selling aftermarket parts but your statement that a difference in overall track width of 2mm is not worth stressing about is very poor advice unfortunately.

Other than that the Exotek parts are considered high quality parts

Bent
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Old 01-05-2016, 03:53 AM   #9887
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I have the 5,5T motor and 550 size sensored. (Reedy Sonic).

Since there is no a specific track in my town, i just want to know if the 550 size will fit and if 5,5T can be matched with some pinion. Just for startup.

By the way this thread has the best feedback support in rctech.net because of Bent and the rest team.

Last edited by djbxp; 01-05-2016 at 04:18 AM.
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Old 01-05-2016, 04:19 AM   #9888
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hi bent. what pistons and oils do you recommend for a bumpy dusty low traction track?
if i run a slipper is 5k front and 3k rear a good start for diff oils on this type of track?
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1. All normal motors for 1/10 buggy are sensored (ORCA, Tekin, Orion, LRP, Hobbywing +++++) and are measured in Turns that stem from the old brushed days.
For 4WD modified go for a 6.5T. This will be good for both indoors and outdoors.
Regarding brands of motor and ESC you will get as many suggestions as there are drivers
What is your budget ?

2. For a 6.5T you will ned a 21 pinion for 540 size motor. They are 48P.

3. XB4 '16 only accepts a shorty battery. Choose a 4600mAh or larger capacity to give you some run time.

4. Any normal standard servo aimed at 1/10 buggy will do. Pick your favorite.

5. No. What surface do you run on ? For dirt and using the center diff go 5 / 500.000 / 3 as a start.

6. If using the standard 14mm wheels that come with the kit. None. Use the standard hexes. They will get you a long way.

7. The usual; paint, tires, radio gear and oils for diffs (8000cst is included in kit)

If running on low to medium traction dirt or clay we recommend to use these parts:

#361265 Medium side guards (hard is standard)
#361295 Medium rear chassis brace (hard is standard)
#361294 Medium front chassis brace (hard is standard)
#368284 1 dot rear springs
#368183 1 dot front springs

This transforms the car in terms of flex and mechanical grip and takes out the twitchiness it will have if you run the hard parts and stock springs on lower grip tracks.

Bent
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Old 01-05-2016, 04:25 AM   #9889
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Originally Posted by djbxp View Post
I have the 5,5T motor and 550 size sensored. (Reedy Sonic).

Since there is no a specific track in my town, i just want to know if the 550 size will fit and if 5,5T can be matched with some pinion. Just for startup.
As long as you have 3mm mounting points for the motor bracket is should fit as the 550 size motor is only longer than a 540 size.

But I highly recommend not using a 550 size motor in the XB4.

550 size motor is used for the much heavier and beefier Short Course trucks for a reason.

Bent
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Old 01-05-2016, 04:30 AM   #9890
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hi bent. what pistons and oils do you recommend for a bumpy dusty low traction track?
if i run a slipper is 5k front and 3k rear a good start for diff oils on this type of track?
We either run 2 x 1.6 and 2 x 1.7 front and rear or for very bumpy tracks we drill the pistons to the popular 4 hole configuration; Front: 2 x 1.1 + 2 x 1.5 and Rear: 2 x 1.1 + 2 x 1.6

We usually run 500-550 cst oil in the front and 450-500 cst in the rear with Xray 1 dot springs front and rear.

5' and 3' in the diffs is a very good starting point for low traction

Bent
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Old 01-05-2016, 05:16 AM   #9891
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Thankyou i will try that :-) QUOTE=BentKa;14334622]We either run 2 x 1.6 and 2 x 1.7 front and rear or for very bumpy tracks we drill the pistons to the popular 4 hole configuration; Front: 2 x 1.1 + 2 x 1.5 and Rear: 2 x 1.1 + 2 x 1.6

We usually run 500-550 cst oil in the front and 450-500 cst in the rear with Xray 1 dot springs front and rear.

5' and 3' in the diffs is a very good starting point for low traction

Bent[/QUOTE]
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Old 01-05-2016, 06:34 AM   #9892
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Quote:
Originally Posted by BentKa View Post
As long as you have 3mm mounting points for the motor bracket is should fit as the 550 size motor is only longer than a 540 size.

But I highly recommend not using a 550 size motor in the XB4.

550 size motor is used for the much heavier and beefier Short Course trucks for a reason.

Bent
What will be the bad thing ? Higher consumption on batteries? less torque?
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Old 01-05-2016, 07:11 AM   #9893
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Originally Posted by djbxp View Post
What will be the bad thing ? Higher consumption on batteries? less torque?
A 550 size motor weighs 90-100 grams more than a 540 size motor.

This will put A LOT of stress on the motor mount which is not constructed to support a much heavier motor.

And the torque of the 550 motor will also put a lot of extra strain on the drivetrain.

Again the XB4 is constructed for 540 size electronics.

But by all means it's your buggy

Bent
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Old 01-05-2016, 07:27 AM   #9894
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Originally Posted by crusty View Post
hi bent. what pistons and oils do you recommend for a bumpy dusty low traction track?
if i run a slipper is 5k front and 3k rear a good start for diff oils on this type of track?
if you don't have the right drill bites like most out there you can buy avids 2+2 pistons and I am pretty sure schelle makes the 1.1x1.5 and 1.1x1.6 pistons aswell. I used the avids on my 15 and now on my 16spec but with 32.5f and 30r wt.
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Old 01-05-2016, 07:51 AM   #9895
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Originally Posted by STLNLST View Post
Ran a 2016 today and OMG is all I can say. It was WAAAAYYYYY better than my D413. Even with the kit included hard parts on our low bite track it felt pretty good. The car is really easy to drive. I can't wait to get mine and get it ready for upcoming big races.
I made some changes to the car and it would blow your mind how much better it is now compared to when you drove it. This car is like cheating.

I went to 3 hole pistons, took the front top deck off, went to 2 dot front springs, gear diffs with 7k/3k, and moved shocks out on arms. It's like a slot car now. Car is amazing.
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Old 01-05-2016, 08:36 AM   #9896
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Corner weights with receiver behind motor, and 15g in corner behind receiver.
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Old 01-05-2016, 08:38 AM   #9897
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Good to see Clint getting with Xray now. The xb2 will soon follow I'm sure. Kp your due for one also! Haha
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Old 01-05-2016, 10:21 AM   #9898
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Good to see Clint getting with Xray now. The xb2 will soon follow I'm sure. Kp your due for one also! Haha
I just ordered a 22 3.0, but Kyle Turner is getting the xray. I'll let him be the guinea pig and then sell the losi and get the xray.
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Old 01-05-2016, 10:38 AM   #9899
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Corner weights with receiver behind motor, and 15g in corner behind receiver.

Super helpful info here. I need to invest in those corner scales.

By chance could you post a pic of your entire chassis? I'd like to approximate your electronics / placement with my new build.
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Old 01-05-2016, 01:27 PM   #9900
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Just build my '16.
The rear link didn't fit on the front side of the hub, is this an error in the manual?
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