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Old 07-14-2013, 10:01 PM   #2491
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Originally Posted by Rampokker View Post
Here you go:



We run 21.5 motors in 4wd stock. The fan is just extra protection.
Your wiring is so clean I almost thought your car was wireless!!!!
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Old 07-15-2013, 01:32 AM   #2492
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Your wiring is so clean I almost thought your car was wireless!!!!
Thanks!
It did take me some time to get it right. It's not quite perfect, but I'm happy with it.
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Old 07-16-2013, 03:13 AM   #2493
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Here's my wiring





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Old 07-16-2013, 06:06 PM   #2494
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Here's my wiring





Another sweet job!!
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Old 07-16-2013, 07:02 PM   #2495
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what are carpet/astro turf guys running for diff oil?
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Old 07-16-2013, 09:06 PM   #2496
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Here's my wiring






what aluminum steering rack is that ...
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Old 07-17-2013, 12:00 AM   #2497
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Hi Fast Guys,

A few new XB4 upgrades are in stock. Choice of black or Xray orange.

If these do well I'll be sure to launch many more

http://www.exotekracing.com/

Thanks!



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Old 07-17-2013, 12:23 AM   #2498
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what aluminum steering rack is that ...
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Old 07-17-2013, 01:38 AM   #2499
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Hi Fast Guys,

A few new XB4 upgrades are in stock. Choice of black or Xray orange.

If these do well I'll be sure to launch many more

http://www.exotekracing.com/

Thanks!



Nice, I'm glad they do black so it won't clash with the red theme on my XB4
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Old 07-20-2013, 12:19 PM   #2500
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Hello is this buggy worth taking a look at?
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Old 07-20-2013, 12:36 PM   #2501
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Congrats to Martin on the winning the euros This morning he drove awesome and kept the all the big dogs behind him and the xb4 looked pretty planted to the ground.
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Old 07-22-2013, 11:41 AM   #2502
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We keep stripping the bevel gear and if not noticed (heard) in time the differential gear. The front seems to have the most problems. I set the slipper accordingly the supplemental sheets and it slips as it should (I have it's set at around 6.2mm). Motor wise i use a 5.5t motor with a 17t pinion. Mesh is setup properly and minimal.

Don't know exactly when is happens, but I think after hitting the brakes very hard, after a verry long straight.

I'm certainly not the only one, I know at least 4 or 5 people with the same problem. I also know that shimming is not the way, but as support from XRay don't answer my thread on their own forum I have no other option.

The car drives like crazy, but this keeps the fun away! I'll start with a shim behind the bevel gear (0.1mm) en on the outgoing bearings (0.1mm). This makes the mesh smaller but stil there is some play.

What are your opinions about this?
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Old 07-22-2013, 02:33 PM   #2503
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Too much brake power ?

Indeed I've seen several braking bevel gears but they still be able to finish their run and this is a very tough car overall.
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Old 07-22-2013, 05:02 PM   #2504
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Originally Posted by gdw1963 View Post
Motor wise i use a 5.5t motor with a 17t pinion. Mesh is setup properly and minimal.

Don't know exactly when is happens, but I think after hitting the brakes very hard, after a verry long straight.
I think you'll find that with the 5.5 motor you are doing speeds higher than a lot of us will ever see and braking hard from such high speed is going to cause issues. What sort of surface are you racing on?

You have a couple of options I think. The slipper is going to give the gears the best chance of surviving. Have you tried loosening it half or one turn? This might give the slip needed under brakes. The supplement was 6.2 to 6.7 from memory.

A shim will prolong the life of the gears a little as long as there is some freeplay as you mentioned.

Probably the next best thing would be to go with a 6.5T motor and a 19 or 20 tooth pinion and see if the softer drive is easier on the gears.
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Old 07-22-2013, 05:45 PM   #2505
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Quote:
Originally Posted by gdw1963 View Post
We keep stripping the bevel gear and if not noticed (heard) in time the differential gear. The front seems to have the most problems. I set the slipper accordingly the supplemental sheets and it slips as it should (I have it's set at around 6.2mm). Motor wise i use a 5.5t motor with a 17t pinion. Mesh is setup properly and minimal.

Don't know exactly when is happens, but I think after hitting the brakes very hard, after a verry long straight.

I'm certainly not the only one, I know at least 4 or 5 people with the same problem. I also know that shimming is not the way, but as support from XRay don't answer my thread on their own forum I have no other option.

The car drives like crazy, but this keeps the fun away! I'll start with a shim behind the bevel gear (0.1mm) en on the outgoing bearings (0.1mm). This makes the mesh smaller but stil there is some play.

What are your opinions about this?
I've had the same thing happen once or twice. I think it's the internal diff gears and not the ring and pinion but I'm not sure. It's only happened a few times and my gears all seem fine. I'm using a 6.5t motor, and it's only on one track we have here in Florida where it's a super long straight with a ton of traction where it dumps into a tight turn so you go from the fastest it's ever been on a track to full breaking with a lot of traction.
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