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Old 03-26-2007, 02:01 AM   #286
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.... edit

found the answer to my question already . sorry...
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Old 03-26-2007, 12:17 PM   #287
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I have a question for Sphere 2007 users. I've tried two 13.5 motors with the new Sphere 2007 and both make a lot of noise at low throttle. Hold your car up in the air, or remove the pinion, and then hold slow throttle. Does it sound bad to you? Mine sounds bad. The motor sounds great at half to full throttle, and the lap times are fine, but whew! Motor sounds like it's stuttering or something.
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Old 03-27-2007, 09:03 PM   #288
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Default Reason for larger capacitor?

Does anyone know the effects of changing out the capacitor supplied with the Sphere Competition with a larger rated capacitor. The Feb. issue of Car Action has Lemieux's Xray where he has done this to his Sphere Competition.
Just wondering what the effects/advantages of doing this would be?
Thanks
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Old 03-27-2007, 09:44 PM   #289
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Quote:
Originally Posted by burito
@simi: go for the X11 4.5t (#50691), very good allround motor for 5- and 6-cell use.
burito: the #50691 is a 4.5 sintered motor right? just making sure as i am having one purchased for me in HK and dont want to end up with a 4.5 bonded motor.

also, i checked the LRP site and the was a combo pack for a TC Spec + X11 4.5t (#08599) but its seems this one comes with a 4.5 bonded motor. if so, is there a combo pack that comes with a sintered 4.5? will it come out cheaper than purchasing the speedo and motor seprately?

Thanks.
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Old 03-27-2007, 09:47 PM   #290
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Hey burito, question, dont take this the wrong way, I love my sphere esc's but I have a 3star motor and never have gotten to use it. I cannot get it soldered in properly. The way the tabs are made it is impossible to get a class 2 or 3 solder connection made. It isnt a true through hole design. I have a brand new motor that is burnt up on the lands from trying to get a 75% solder fill to the primary side. Any plans on changing this design to a flat terminal or something else, same type of connection seen on the esc. I would classify these as at least class 2 electronics.
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Old 03-28-2007, 05:07 AM   #291
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@Roborat: no worries, all our 4.5t motors are supplied with the sintered rotor. None has a bonded rotor (only 5.5, 6.5, 7,5t use bonded).

@loopedout: I know what you mean! You're talking about the first brushless motor we released (dark can) which we internally call the "X9", this was replaced by the new motor mid of last year which is called "X11". You can identify the new one easily by the silver can.
-> the X11 has a new PCB which solves the problem you describe entirely.
-> obviously more changes also, but this is what you where interested in for now I guess...
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Old 03-28-2007, 01:39 PM   #292
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Hey Burito,
do you know what profile of the TC spec that Surikarn runing in TITC since he runing orion brushless combination with TC spec?
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Old 03-28-2007, 02:55 PM   #293
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Hi

I have searched the thread but can't find the answer - so apologies if this question has been asked before.

What is the difference between the bonded magnet in the 5.5, 6.6, 7.5 and the sintered magnet in the 4.5. Therefore what difference in performance?

Many thanks
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Old 03-28-2007, 03:13 PM   #294
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Quote:
Originally Posted by simini80
Hi

I have searched the thread but can't find the answer - so apologies if this question has been asked before.

What is the difference between the bonded magnet in the 5.5, 6.6, 7.5 and the sintered magnet in the 4.5. Therefore what difference in performance?

Many thanks
Simini
There are a few major diffrences:

1. The sintered magnet is WAY stronger magnetically so the motors overall power output is higher. They also have a much higher tolerance for heat so they retain their strength indefinatly.

2. The sintered magnet is WAY stronger physically so there are no issues with shattering rotors at high rpm.

3. The sintered magnet motors require lower gear ratios that are easier to accomplish in current low internal drive ratio sedans.

4. You run much less drag brake with the sintered rotor since the cogging is much stronger. This keep your speedo cooler.

5. The brakes are insanely strong so you have to reduce your radio's brake endpoint to limit the ultimate braking force. This also keep your speedo cooler.

There are cetainly applications where the bonded magnet is better like 1/12th and Off Road. The load in those applications are lower and smooth power delivery is very important.
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Old 03-28-2007, 03:18 PM   #295
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Reto!!!!!
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Old 03-28-2007, 05:14 PM   #296
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does anyone know when the next shippment will be they are still on backorder?
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Old 03-28-2007, 06:49 PM   #297
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Quote:
There are a few major diffrences:

1. The sintered magnet is WAY stronger magnetically so the motors overall power output is higher. They also have a much higher tolerance for heat so they retain their strength indefinatly.

2. The sintered magnet is WAY stronger physically so there are no issues with shattering rotors at high rpm.

3. The sintered magnet motors require lower gear ratios that are easier to accomplish in current low internal drive ratio sedans.

4. You run much less drag brake with the sintered rotor since the cogging is much stronger. This keep your speedo cooler.

5. The brakes are insanely strong so you have to reduce your radio's brake endpoint to limit the ultimate braking force. This also keep your speedo cooler.

There are cetainly applications where the bonded magnet is better like 1/12th and Off Road. The load in those applications are lower and smooth power delivery is very important.
Thanks Adrian - more questions tho......

I am no Hara or Moore - and don't like a car too quick in mod (sounds crazy) but want to be smooth and consistent. I also want to last with plenty to spare using 5cell.

Just trying to understand these numbers. Does 4.5 mean it is quicker than 5.5 and 6.5 etc, or just a different application? I note that LRP state the 4.5 (sintered magnet) has a lower RPM than the 5.5 (bonded magnet).

With brushed ut was easy 5 turn quicker than 7 etc, but greater stress on car and batteries and tyres etc.

Therefore will different brushless motor manufacturers numbers mean different things?

Sorry to sound dumb.

Thanks
Simini
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Old 03-28-2007, 08:04 PM   #298
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Quote:
Originally Posted by CNC Racing
Does anyone know the effects of changing out the capacitor supplied with the Sphere Competition with a larger rated capacitor. The Feb. issue of Car Action has Lemieux's Xray where he has done this to his Sphere Competition.
Just wondering what the effects/advantages of doing this would be?
Thanks
I am interested in the answer to this too. Anyone?
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Old 03-28-2007, 08:16 PM   #299
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I just recently bought a 2nd hand TC Spec/3.5T combo. Is there anyway that I can slow the motor down to use on a small-med sized track by using gearing, transmitter settings or esc settings? Thanks.
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Old 03-28-2007, 09:15 PM   #300
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Burito, is there anyway I could get the solder lands replaced or changed out under warranty? kinda sucks i have a brand new motor that I cant run.

Kenneth I just turn my epa on my throttle down when Im running the 3.5 motor and use the profiles in the sphere comp to control the aggressiveness of the throttle input, you cant gear it to high or it will thermal.
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