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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › Starter Battery Cradle
07-23-2006 11:32 PM  14 years ago
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AirFlex

rrApprentice

Danbury, CT

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Starter Battery Cradle
Guys,

What parts do i need to make the starter so that it connect to the 2 RC car batteries. It's a cradle of some kind, anybody have part number for this??

Also what size pack should i use with it..i'm starting a OS50 Hyper with a Torquemaster 90 and have no plans for bigger bird anytime soon.

I see that 1500mah pack are much cheaper than 3000mah..will the starter work on 2 6 cell 1500mah packs in series?

Whats the max discharge rates of these packs?? I seem that with my 12v 7A field battery i barely get enough torque to start the OS50.

I know bigger pack are better..but if i am going to have to spend $100 on this modification i'd rather just stick with the cable to the field battery.
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07-23-2006 11:43 PM  14 years ago
tchavei

rrProfessor

Portugal

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K&S has a battery holder if I'm not mistaken.

About the starter itself... I used to have a Carson 90 something... would only barely turn over my OS50. I got a Goldee 120 and boy... that thing turns over my 50, 70 and even my YS91 like butter. Same 12V Lead gel battery with 7A. Sometimes its really the starter and not the supply voltage


Tony

--------------------
"Perfection and patience usually walk side by side..."
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07-24-2006 12:51 AM  14 years ago
chopperman1

rrKey Veteran

Huntsville, AL

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Go to your LHS, and ask them for the parts to hook it up. My LHS has them which just screws into the bottom of the starter.
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07-24-2006 01:52 AM  14 years ago
AirFlex

rrApprentice

Danbury, CT

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KSJ454 - BATTERY PACK HOLDER seems to be what i would be needing..

would this work as well:
[url=http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXLMS9&P=7]

Then Ricks' shows a 1500mah 7 cell and a 2000mah 6 cell as related batteries.

Having 2 7cells in series would give 16.8V. Will this fry the starter (suppsedly rated for 12v, but your typical 12V leadcell gives about 14 volt or so if i'm not mistaking) or just give me a nice bit of torque??

My LHS is pretty far away and i don't want them trying to talk me into more expensive batteries than i need.

Any advice greatly appreciated.

tchavie:
Your comments on the quality of the 90 started noted...I should have gotten something stronger to start with, but at the point of purchase I didn't know any better. I'm gonna try and use this if i can, i can always replace it later if it does work out.

After the first start of the day she usually fires right up, almost scary how well she starts, like a .25 second burst of the started and she's humming away. I love that Hyper50
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07-24-2006 01:59 AM  14 years ago
ESWLFSE

rrElite Veteran

Liberty Hill, TX

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16V for a few seconds at a time won't hurt a thing. 1500 mA should last all day easily. You can make a simple plate/angle aluminum battery mount bracket and velcro strap the batteries onto that with some foam tape under them. Get batteries from an electric car racer. They toss them after 10 races and they will still work in a starter for years.
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07-24-2006 02:45 AM  14 years ago
Furious Predator

rrProfessor

Kitchener, Ontario, Canada

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http://www.ronlund.com/Merchant2/me...uct_Code=KSJ454
Shawn
Team Leisure-Tech
Team HelixRC
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