Tire inflators/compressors and max Amp draw


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WingNoob
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Tire inflators/compressors and max Amp draw

Post by WingNoob »



Hey all,

I'm looking to add a portable tire inflator/compressor to my tool kit. Most of the units marketed to motorcycle riders are either very expensive (Bestrest Cyclepump) or of really dubious quality (Slime pumps). Looking at portable compressors that are used more by the 4x4 community (such as Viair compressors), the performance and reliability is much improved, but maximum current draw is often well over 20 amps.

Any issues with running a compressor with a peak draw of say, 25 amps?

I do have an aftermarket upgraded alternator (not sure if Compufire or LActrical off the top of my head). I'd also run dedicated wires to the battery with SAE terminals, probably 10 or 12ga wire.

And before anyone points it out, yes, I am aware that the bike has an on-board compressor. I don't want to rely on a 25 year old undersized compressor that, if it fails, will cost an arm and a leg to replace. I use the on-board to adjust the suspension as required and that's all.

Cheers


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MikeB
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Re: Tire inflators/compressors and max Amp draw

Post by MikeB »

In my opinion, the Slime compressors and similar are more that adequate for the task. They are compact and usually draw less than 15 amps.

I have two inexpensive compressors I bought from Walmart several years ago. They were in a plastic case. I removed them from the case and put them small digital camera bags. I got the idea from a Motorcycle Consumer News article in October of 2002. They have both been used at least twice and are still in excellent condition today.

And you are correct, the compressor on the GL1500 is best suited for suspension adjustments. The motorcycle electrical system and the compressors not suited for adding air to tires, especially flat tires.
MikeB
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gford
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Re: Tire inflators/compressors and max Amp draw

Post by gford »

I carry this one with me. Fills tires fast and is not that big.

https://www.amazon.ca/gp/product/B078LY ... UTF8&psc=1
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WingNoob
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Re: Tire inflators/compressors and max Amp draw

Post by WingNoob »

Thank you both for the input.

I've been doing some more research and I've decided to go with a 10-15 amp unit like a Slime or the one gford posted, rather than a larger compressor. Now the only question is whether I go cheap and hope that it doesn't crap out when I need it, or pry open my wallet to get a quality unit with a lifetime warranty, like a CyclePump...
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Rambozo
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Re: Tire inflators/compressors and max Amp draw

Post by Rambozo »

I've had cheap ones and good ones, and taken both kinds apart. The only real difference is the cheap ones are not meant to last. Plain bushings instead of bearings, small or no cooling fans, etc. If you plan to use it often like for camping or other air needs get a good one. If it's just for emergency use, a cheap one is fine. It won't go bad riding around in your saddlebag until the rubber parts break down after years. Maybe spin it over once a year or so to keep the grease alive.
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Andy Cote
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Re: Tire inflators/compressors and max Amp draw

Post by Andy Cote »

Another option. If all you want is an emergency inflation, you can get the CO2 cartridge kits.
2015 Goldwing, basic black

Previously: GL1200 standard, GL1200 Interstate, GL1500 Goldwing, GL1500 Valkyrie Standard, 2000 Valkyrie Interstate, many other Hondas
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kwthom
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Re: Tire inflators/compressors and max Amp draw

Post by kwthom »

Rambozo wrote: Tue May 04, 2021 8:18 pm <...>It won't go bad riding around in your saddlebag until the rubber parts break down after years. Maybe spin it over once a year or so to keep the grease alive.
My Slime pump is 10+ years only, and only used on occasion. The rubber parts started to break down, as you mentioned.

I wrote to Slime, explained the situation, and was willing to pay a nominal amount for replacements. Instead they mailed to me for free a complete set of accessories. :D
• "If I can't fix it, I'll fix it so nobody can!" ● Wait...I no longer have to fix it - I'm retired! :lol: ● Ken (IBA#50030) ● "Get busy living, or get busy dying." -Andy Dufresne, The Shawshank Redemption 1994 ● My blog
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Re: Tire inflators/compressors and max Amp draw

Post by WingAdmin »

If it's just for emergency use, get it with battery clamps, and just clamp it right to the battery terminals. You don't have to worry about fuse ratings of accessory circuits or anything like that, then.
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Re: Tire inflators/compressors and max Amp draw

Post by Solo So Long »

You have three worries with a high-amp load on a motorcycle.

First, the battery. Can it handle the load, for long enough to do the job? Even if the motor is running and charging the battery, this is still a consideration.

Second, the wiring capacity. If you're doing a direct connection, this isn't a factor, but if you use existing wires, you can easily over load and get a fire. They use the cheapest, thinnest wire they can when building a motorcycle.

Third, the rest of the electrical system. What happens is you put that much load on the battery at the heart of everything?

Myself, I wouldn't put on a big compressor.


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