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Radio Control Hobbies & Raceway - Waterbury, CT.

Old 01-05-2015, 07:25 PM
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Well, Tessman runs 100k in his HB center diff, as does Alex in his B44.3. I think Jay also runs 100k. That would seem like a good place to start, as I've heard that 60k is too loose.

BTW, Bman's, could you explain why less front droop would reduce front tire wear? Less front droop would basically limit lateral (during cornering) and longitudinal (during acceleration) chassis roll, which I expect would keep more of the front tire in contact with the surface and contribute to greater front tire wear. Unless the expectation is that more contacting front tire would even the wear out across the tire?
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Old 01-06-2015, 03:16 AM
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Originally Posted by stickboy007
Well, Tessman runs 100k in his HB center diff, as does Alex in his B44.3. I think Jay also runs 100k. That would seem like a good place to start, as I've heard that 60k is too loose.

BTW, Bman's, could you explain why less front droop would reduce front tire wear? Less front droop would basically limit lateral (during cornering) and longitudinal (during acceleration) chassis roll, which I expect would keep more of the front tire in contact with the surface and contribute to greater front tire wear. Unless the expectation is that more contacting front tire would even the wear out across the tire?

I would say 100k to start. 80 if you need less drive and 125 if you need more. I have been running 125 lately.


As for the front droop, not only will it help with on power steering but will help limit the rear weight transfer. If you have to much droop the front of the chassis will lift taking weight off the front tires. You'll have better rear traction of course but the front will just spin because of lack of pressure. Not saying that is the problem but merely something to look at.
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Old 01-06-2015, 07:29 AM
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Both Xray and Xray team drivers are recommending 500,000 in the center diff for med/high bite tracks. Seems very high to me but what do I know.

The XB forum is having this discussion right now.
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Old 01-06-2015, 08:20 AM
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Originally Posted by Bman's 3XNT
I would say 100k to start. 80 if you need less drive and 125 if you need more. I have been running 125 lately.


As for the front droop, not only will it help with on power steering but will help limit the rear weight transfer. If you have to much droop the front of the chassis will lift taking weight off the front tires. You'll have better rear traction of course but the front will just spin because of lack of pressure. Not saying that is the problem but merely something to look at.
I see. So you're saying the front tire wear could be coming from excessive spinning of the front tires. Makes sense, but of course one would have to see how that trades off with more pressure on the front tires (less droop) leading to more wear. There's probably a window in there somewhere for optimal wear.

If you're going to run 500k in the center diff, you might as well make it a locked slipper...
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Old 01-06-2015, 08:48 AM
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I would think 500k would be to much as well, unless it's carpet. I noticed a big difference just between 100-125k.


When I first started my center diff design I played with oils ranging from 5-125k. Of course starting low at 5k and working up. Everything under 50 was useless. Talk about smoking front tires!! As I went up tire wear got better. Went from both fronts to the most inside front. Once I settled on the middle I fine tuned front/rear oils. Right now I'm 7/125/5......
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Old 01-06-2015, 01:12 PM
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Willy B Can I put a AE T5m on pre-order?
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Old 01-06-2015, 02:08 PM
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I'm gonna run 100,000 in the center to start with and keep 8000 in the rear. In the front I'm gonna go up 1000 in the front to help with the tire wear. So 9000/100,000/8000. Then as time goes on and I get more familiar with the gear diffs I will make more adjustments.
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Old 01-06-2015, 02:11 PM
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T5 looks sweet. But I'm glad I went with the Xray
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Old 01-06-2015, 02:13 PM
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http://www.redrc.net/2015/01/yokomo-...it/#more-90981

Still wanna try this out one day.
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Old 01-06-2015, 04:15 PM
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Originally Posted by blwaz23
I'm gonna run 100,000 in the center to start with and keep 8000 in the rear. In the front I'm gonna go up 1000 in the front to help with the tire wear. So 9000/100,000/8000. Then as time goes on and I get more familiar with the gear diffs I will make more adjustments.
If you have to buy oil I would just buy 10k. Going up 1k is not that big of a difference. 10/100/8....
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Old 01-06-2015, 05:53 PM
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Originally Posted by Bman's 3XNT
If you have to buy oil I would just buy 10k. Going up 1k is not that big of a difference. 10/100/8....
Sounds good.

Last edited by blwaz23; 01-06-2015 at 07:41 PM.
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Old 01-07-2015, 12:09 PM
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Getting things ready to head up racing tonight! See you all up there!
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Old 01-07-2015, 09:10 PM
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Had a great time tonight. Thanx to Will, Jay, And Jeff. Rob and Larry had a great time in the bmain for 2wd buggy. My face hurts from the smile I had during the race. Awesome time. See you guys on sat.
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Old 01-08-2015, 07:16 AM
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Had a blast last night! Was having way too much fun in the Main. Tony, I'm coming for you next time!!! Be ready
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Old 01-08-2015, 07:23 AM
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good racing last night. Good to race 4wd buggy again. Blake, you are really fast with that xray, especially considering you just got it. I'll make some adjustments and hit more 12 second laps next time I race you and Big Lux
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