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Old 06-08-2007, 09:23 AM   #511
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Originally Posted by RFrancis View Post
In my 4.5, I had to remove the nylon washer with the ceramic bearings...

With the washer the motor didn't run as he should, and the temperature was higher than before with the standart bearings.
My 4.5 is so loud maybe one of those bearings went bad.
BTW my 4.5 is sintered no Kevlar wrapping!!!
Anyhow www.nexusracing.net has the new Comp TC available now.
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Old 06-08-2007, 09:27 AM   #512
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If it is making a grinding noise, the bearing need to be replaced ...
I used rear axle bearing`s from Ae .....

Worked great .....
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Old 06-08-2007, 11:25 AM   #513
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Quote:
Originally Posted by RFrancis View Post
In my 4.5, I had to remove the nylon washer with the ceramic bearings...

With the washer the motor didn't run as he should, and the temperature was higher than before with the standart bearings.
Ummm, interesting point of view. I remove the nylon washer, too, but when i put a ceramic bearings, i put the washer again. Tomorrow i probe this at track.

Thank you, very much, for all inputs. Guys, your are the best. ;-)
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Old 06-08-2007, 07:51 PM   #514
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Quote:
Originally Posted by AlanLim View Post
My 4.5 is so loud maybe one of those bearings went bad.
BTW my 4.5 is sintered no Kevlar wrapping!!!
Anyhow www.nexusracing.net has the new Comp TC available now.
speedtechrc has them too but there 10 bucks more than the ones at nexus racing
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Old 06-09-2007, 06:40 AM   #515
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Default Tc Spec.

Hi Guys,
I run a B4 off road and want to get a TC Spec Sphere because it has a higher BEC (5.8v). I want to know will I have profile problems as its designed for touring cars? Also is the TC Spec's heatsink taped on, or a metal/mechanical attachment?
Thanks.
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Old 06-09-2007, 02:44 PM   #516
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Hello again, This morning i go to the track for some testing, include the weird phenomenon with my motor. The day is sunny, 30C and the track are 58C, is hot, my old Sorex 36 are rip ...
I retire the nylon washer, in the back lid, my first pack run 6:30 minutes, in the morning the track are at 43C, the motor not fade at any moment, but finish at 78C, and ESC 70C.
In the second pack, not fade, and temperature raise to 84 motor, 76 ESC.
In the third pack, not fade again, the temperature are dangerously high, 86C motor, 82 ESC, only 8 flashes to cut, at internal check temp. i feel, a soft motor at 4:30 minutes.
In the next pack, i put a dissipator in motor and fan in ESC, the temp low to 60C in ESC and 80C in motor, with not sintom of fade, and 7 minutes run.

I run a 6 packs in total, and not sintom of fade at any moment, the motor are fast in all packs, the back lid are deformed and i change for a new one.
I dont know is the problem are the Washer, the lid or the temperature, but when the problem happens the batteries run 5 minutes right and now 6-7 minutes.
I take a temperature with a Exergen 301, is a infrared termomether used for nitro motors.
Well, i continued probed and next will compare with the 4.0

Greetings.
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Old 06-15-2007, 01:13 AM   #517
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Hey Burito,
do we need to remove the washer on the plastic cap when we replace the regular bearing to ceremic bearing? thanks
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Old 06-15-2007, 05:48 PM   #518
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Default Cap lead length

Burito

Will extending the length of the capacitor lead by about 1 inch have any detrimental effects on the TC edition sphere? I have heard that on some other brand speed controls that lengthening the lead can cause issues.
Also what grade are the ceramic bearings LRP offered for the X-11 series motors?
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Old 06-16-2007, 02:54 AM   #519
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@Guo Chean: no, the ceramic bearing is the exact same dimension as the regular bearing. Also there is not a lot of play required, but if you feel there is too little (or none) with either of the bearings then you can simply install the plastic washer on the other side of the bearing, so you get more play.

@CountryHick: lengthening the cap leads shouldn't be an issue, as long as you don't extend it too far (I'd say don't go over 1"/25mm increase). Obviously you need to use the same wire diameter as well.
As for the ceramic grade, I'm actually not sure but I think it's the highest grade you can get without buying "spacecraft grade"... I never had a ceramic one go bad so far, so they're pretty good.
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Old 06-16-2007, 03:15 AM   #520
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thanks a lot
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Old 06-16-2007, 03:30 AM   #521
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As always, excelent ideas, Burito. The bearings are very good, after a hard competition and more packs, in some diferents conditions, i dont have an issue with them, very smooth and minimum maintenance.

Well, i have some capacitors with a low inductance, i like to probe a 10000uf instead of 2200 that it comes with esc. That can happen?, any one probe it.
Is bad for a esc?, Is possible that less is warmed up?, like in the Esc for BS.
Now, are a new solid capacitors,less prone to warm up itself and they obtain more stable voltages, It is possible to obtain better yields, changing the normal one by these?, or it can that the gain is insignificant?.

Greetings, xluis.
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Old 06-16-2007, 07:21 AM   #522
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Thankyou.
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Old 06-16-2007, 10:43 AM   #523
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Burito

How come ceramic bearing`s from Lrp are not available in the USA ?
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Old 06-16-2007, 10:30 PM   #524
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nexus has them.

Quote:
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Burito

How come ceramic bearing`s from Lrp are not available in the USA ?
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Old 06-17-2007, 08:30 AM   #525
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Do I need to change the bearings?
I would have thought I would get at least 2-300 runs and by that time isn't the rotor cooked?
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