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Old 03-14-2015, 12:27 AM   #1 (permalink)
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Stupid rookie questions...

Hi all,

I've been interested in electric vehicles for some time and have build an electric motorcycle and several electric bicycles. I have since been looking into getting into EVs of the four wheeled variety and have an Open Revolt Controller kit.

Undoubtedly, I've made a few rookie mistakes some of them unquestioningly stupid. If anybody has put together one of these things before, I understand that they are of rather exceptional quality but I could use some direction.

Those capacitors are SERIOUSLY STUBBORN to solder in. The three large ceramic capacitors I actually used a butane torch to get on. I was as careful as I could be to keep the flame only on the work and not the capacitor itself. They had long legs and I didn't see much of a problem.

...but those 16 capacitors near the end... man are they hard to solder in. What kind of wattage do I actually need here? I have a heavy duty weller 200w soldering iron and it's not even close to getting the job done.

Any opinions? Thanks for any help.

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Old 03-14-2015, 12:46 AM   #2 (permalink)
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I don't have any insight into your problem. But I do want to say, there are no stupid questions here. We love to help! Welcome to our community.
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Old 03-14-2015, 12:52 AM   #3 (permalink)
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Thank you!

I am a "tinkerer" and I do not like the use of fossil fuels so ecomodding is a very logical step for me.

I am building a 1994 Ford Ranger EV and I am looking forward to being able to look proudly at my vehicle and saying "I built that."
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Old 03-14-2015, 11:00 AM   #4 (permalink)
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I used a radio shack 250 watt gun. I would hold the trigger till the business end got red hot. Then I would make contact with the area to be soldered. My thinking was that maybe I would not over heat the parts that might get hurt by it.

The controller has been working since September 09. Heating the soldering gun like that was hard on the gun. My conversion is an 87 Ranger.

Good luck
Alvin
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Old 03-14-2015, 11:36 AM   #5 (permalink)
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Quote:
Originally Posted by apowers View Post
I used a radio shack 250 watt gun. I would hold the trigger till the business end got red hot. Then I would make contact with the area to be soldered. My thinking was that maybe I would not over heat the parts that might get hurt by it.

The controller has been working since September 09. Heating the soldering gun like that was hard on the gun. My conversion is an 87 Ranger.

Good luck
Alvin
Hey Alvin! I remember picking up some ideas from you on the other forum. Our builds are very similar.

I've got one of these little irons right here: (Weller D550, I can't post images)


It's supposed to be 200-260w... but it just doesn't get the job done. I butane torched in the 3 ceramic capacitors and that was probably a reckless mistake and a lesson not to work when angry and frustrated. I think I got away from that without a hitch, but these 16 black capacitors... that just sounds like a really, really bad idea.

I am REALLY thinking about this one: (300w amazon iron, I can't post images).

but I have the same concern you have... I don't want to fry the capacitor. I'd have to be careful to keep the head on the work. It could be precarious.
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Old 03-14-2015, 11:57 AM   #6 (permalink)
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Yes that is why I preheated the iron so much just so I would not spend so much time on the work area. I also did the mosfets and diodes like that.

The 300 watt gun might be better.
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Old 03-14-2015, 10:42 PM   #7 (permalink)
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Quote:
Originally Posted by apowers View Post
Yes that is why I preheated the iron so much just so I would not spend so much time on the work area. I also did the mosfets and diodes like that.

The 300 watt gun might be better.
Done. This is me slamming the gable down and saying "it is so ordered."

It only cost $24 from Amazon. I can deal with that.

Thanks for the advice.
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Old 03-15-2015, 04:40 PM   #8 (permalink)
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I really cant see how anybody does stuff anymore. I have my tins of nokorrode amonia chloride and when they are empty i'll have to stop soldering.

My guess is you might want to really clean then pre-tin the leads and go to a proper electronics supllier to get decent but expensive flux. The crud they sell otherwise isn't worth the money
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Old 03-29-2015, 11:17 AM   #9 (permalink)
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The 300w did the trick!

All finished... it works!!
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Old 03-29-2015, 11:18 AM   #10 (permalink)
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