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Unread 06-18-2011, 04:22 PM   #11
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Default Re: 95 C.C. rewired to 4ga

I would think the resistor would cool down when the solenoid is energized all the load goes through the contacts.
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Unread 06-18-2011, 04:27 PM   #12
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Default Re: 95 C.C. rewired to 4ga

ok. all I do is hook up the leads to the batt and the resistor gets hot immediately. Sw is off,no pedal pressure, just hooking up the batt!
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Unread 06-18-2011, 04:53 PM   #13
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Default Re: 95 C.C. rewired to 4ga

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Originally Posted by jack condon View Post
ok. all I do is hook up the leads to the batt and the resistor gets hot immediately. Sw is off,no pedal pressure, just hooking up the batt!
Sounds like the resister is either faulty or the value is too low. Try fitting a 470 ohm 10watt wirewound resistor. (recommended by Alltrax)
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Unread 06-18-2011, 04:59 PM   #14
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Default Re: 95 C.C. rewired to 4ga

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Originally Posted by gaminde View Post
I would think the resistor would cool down when the solenoid is energized all the load goes through the contacts.
Sounds right, but if say the solenoid terminals were carboned up or pitted and could not handle the amp demand would the current not then also try passing thru the resistor.?
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Unread 06-18-2011, 05:08 PM   #15
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Default Re: 95 C.C. rewired to 4ga

HI, I hooked up 2 resisters in series, that seemed to handle the heat problem, I will get the 470 and hook it up and see!! thanks again jack
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Unread 06-18-2011, 05:11 PM   #16
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Default Re: 95 C.C. rewired to 4ga

true about the solonoid, but its a new one. I tapped it with a hammer a few. It the solonoid got too hot it could stick on,(weld) is it true?
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Unread 06-18-2011, 06:05 PM   #17
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Default Re: 95 C.C. rewired to 4ga

Ok did some figuring

470 ohm = 4.9 watts
4700 ohm = .49 watts
10 k ohm = .23 watts

I have looked at the pictures of some of the solenoids and the resistor looks to be .5 to 1 watt range (good guess here) so the 4.7k or the 10k looks to fit the size I'm seeing. I would hate to be drawing 5 watts just sitting there but again this is a Guess
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Unread 06-18-2011, 06:30 PM   #18
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Default Re: 95 C.C. rewired to 4ga

ok think we may haveit now. will use the 470, and figure out the diode direction and hopefully on our way, thanks soooo much,jack
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Unread 06-18-2011, 07:54 PM   #19
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Default Re: 95 C.C. rewired to 4ga

Quote:
Originally Posted by gaminde View Post
Ok did some figuring

470 ohm = 4.9 watts
4700 ohm = .49 watts
10 k ohm = .23 watts

I have looked at the pictures of some of the solenoids and the resistor looks to be .5 to 1 watt range (good guess here) so the 4.7k or the 10k looks to fit the size I'm seeing. I would hate to be drawing 5 watts just sitting there but again this is a Guess
the resistor is wired in series for pre-charging the capacitors in the controller. to pull 5W on its own, it would need to be in parallel with the battery output. the quiescent power consumption is whatever the controller pulls through the resistor at idle. could be 5 watts... im not sure. anywho, my point is its the controller sucking the juice through the resistor.
-sj
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Unread 06-18-2011, 08:10 PM   #20
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Default Re: 95 C.C. rewired to 4ga

Ok same thing, if the caps are pre_charged then less arching at the relay and high ohm would be fine just to keep the caps loaded. No reason to use all your juice on a resistor doing no work.

do you know what the resistance and wattage of a stock resistor is ???
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