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Old 09-16-2009, 08:37 PM   #16
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I had a Lipo pack in my first starter box, I forgot it at the track and thought it was gone for good so bought a new box. I had some A123 batteries from a Dewalt 18 volt pack so put 4 of them in the starter box. Every bit as much power and a higher discharge rating I think if i remember a 40 amp discharge rate. I think the A123 put out like 3.7 volts per cell. I really like this setup.
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Old 09-16-2009, 09:38 PM   #17
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Ofna Truggy Box w/ 12v gel = end of thread (The one with two 775 motors in it.)

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Old 09-17-2009, 05:09 AM   #18
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I fitted upgraded motors in my $5 a piece and works well with the 12v Gell battery
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Old 09-17-2009, 05:24 AM   #19
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mabuchi makes every motor that goes into the starter boxes, rtr vehicles, and all the cheap stuff. the traxxas calls their 775 motor the titan, but mabuchi makes it. some companies change a few things on the motor but its still a mabuchi motor.

the 775 mabuchi motor can handle up to 18 volts dc. plain and simple.so the 4s is actually short of the full potential for the motor.
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Old 09-17-2009, 05:27 AM   #20
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i bought a cheapie 4s lipo and it works dam good. i have burned out 2 775 motors. the reason they burn out is not the voltage, its the load or lack of the flywheel turning.

my flywheel was stuck once and i tried to start and the battery smoked. and the motor burned out.


turns out, the battery was still ok and accepted a charge and i still use it.

the motor was replaced. remember, heavy load or rotor not turning and it should be will kill the motor.
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Old 09-17-2009, 05:33 AM   #21
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I just got a HK $19 4S lipo for a starter box for my truggy and it's the same pack as the $80 Reedy pack I got in my buggy box
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Old 09-17-2009, 05:58 AM   #22
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I have a muchmore platinum silent charger... I guess would need to get a balancer ? I'm new to the whole lipo gig. I'm willing to try one of those hobbyking packs
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Old 09-17-2009, 06:08 AM   #23
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I have the OFNA box shown a few posts back with 2 nimh stick packs. Its light and powerful enough and usually lasts multiple weekends without charging. The guy I asked to pit for me last weekend picked it up and asked me if it had a lipo in it because its not heavy at all.

I thought a lot about going lipo as I have already in everything else but decided against it for one reason. If I run my nimh packs dead I can just recharge them if I ran a lipo dead I would need a new one.
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Old 09-17-2009, 03:21 PM   #24
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This is what I am running in my ofna starter box

Ballistic Batteries 4S Li-Poly 15C Battery Pack (14.8V/2300mAh) (Starter Box)
[BAL1IP2300SB]


This is a Ballistic Batteries 4S, 2300mAh, Li-Poly 15C Starter Box Battery Pack. These 14.8 volt 4 cell 2300mAh Lipoly packs are hand assembled in house by the Ballistic Batteries crew. Ballistic uses only the best materials and supplies for their assembly and the 2300mAh 15C current rating makes these packs one of the best choices for a LiPo starter box battery. This starter box battery is 1/3 the weight of two 6 cell battery packs and features triple shrink wrap, foam padding, 14Ga wire and a balancing lead to keep the pack balanced, all to help handle the abuse a LiPo battery can be put through when used in starter box applications.
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Old 09-17-2009, 03:30 PM   #25
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Quote:
Originally Posted by AndrewClaycomb View Post
Ofna Truggy Box w/ 4S 5000MAH ZIPPY LIPO = end of thread (The one with two 775 motors in it.)

Fixed it for ya.
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Old 09-17-2009, 04:13 PM   #26
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100$ for a 4S 2300 15C....No thx...ill take my 4S 3000 35C 40$ ebay lipos over a name brand lipo any day of the week.
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Old 09-17-2009, 04:23 PM   #27
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Same here we use the ofna blue box with 4s 2200mHa HT battery works great and has not let us down in 18 months of racing great set up.

While on the subject any one know a good online shop that sell parts for the blue box, wouldn't mind getting a new wheel.
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Old 09-17-2009, 04:48 PM   #28
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Quote:
Originally Posted by blade954 View Post

While on the subject any one know a good online shop that sell parts for the blue box, wouldn't mind getting a new wheel.
Try:http://www.nitrohouse.com/catalog/

They are the Ofna people and should have whatever you need.
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Old 09-17-2009, 04:49 PM   #29
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When going lipo with a starter box the 'C' rating is important.

A starter box trying to turn a tight engine creates a lot of amp load on the motor and battery. The C rating of a lipo is how many amps the battery can handle without damage/heating up.

The C rating works like this:

A 2200mah lipo = 2.2 amps.

2.2 amps x 20c = 44 amps so a 2200mah 20c lipo can withstand 44 amps without voltage-sag/damage/puffing/frying.

More examples:

2200mah 40c - 2.2 x 40c = 88 amps that this battery can handle.

5000mah 20c - 5 x 20c = 100 amps that this battery can handle.

A higher C battery will provide more torque to the motor as well because there is less voltage drop as the amperage gets higher.

This rule applies to any lipo whether 3s, 4s, etc.

Get either the biggest mah or highest C you can afford. Or both.

EDIT: After reading through the Losi starter box thread, it's become evident that the motors provided are capable of withstanding only a low amperage. I don't know how many amps these motors are rated for but to be safe, I would stick with a lipo of the same or only slightly higher specs than the one Losi makes for thier box (2200mah 20c.) The higher the mah or C rating of a battery, the more amps it will feed the motor when asked (bogging, stopping on a tight pinch, etc.)
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Last edited by WingWrecker; 09-17-2009 at 05:33 PM.
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Old 09-17-2009, 05:12 PM   #30
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Quote:
Originally Posted by WingWrecker View Post
When going lipo with a starter box the 'C' rating is important.

A starter box trying to turn a tight engine creates a lot of amp load on the motor and battery. The C rating of a lipo is how many amps the battery can handle without damage/heating up.

The C rating works like this:

A 2200mah lipo = 2.2 amps.

2.2 amps x 20c = 44 amps so a 2200mah 20c lipo can withstand 44 amps without voltage-sag/damage/puffing/frying.

More examples:

2200mah 40c - 2.2 x 40c = 88 amps that this battery can handle.

5000mah 20c - 5 x 20c = 100 amps that this battery can handle.

A higher C battery will provide more torque to the motor as well because there is less voltage drop as the amperage gets higher.

This rule applies to any lipo whether 3s, 4s, etc.

Get either the biggest mah or highest C you can afford. Or both.

EDIT: After reading through the Losi starter box thread, it's become evident that the motors provided are capable of withstanding only a low amperage. I don't know how many amps these motors are rated for but to be safe, I would stick with a lipo of the same or only slightly higher specs than the one Losi makes for thier box (2200mah 20c.) The higher the mah or C rating of a battery, the more amps it will feed the motor when asked (bogging, stopping on a tight pinch, etc.)


Very Nice explanation.
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Last edited by Integra; 09-18-2009 at 06:37 AM.
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