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Thread: Mini Air Compressor

  1. #1
    Senior Member sponge's Avatar
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    Mini Air Compressor

    I suspect that someone has done this already. But I didn't see one in a search so here goes.
    I like being able to air down tires off road but don't like riding back home on squishy tires. This is the cheapest solution I could come up with.
    Started with a $10 12volt compressor from Harbor Freight. ($8 with the 20% coupon)
    compressor.jpgdigitalsavings_02.png
    I then took it out of its plastic case, removed and plugged the pressure gauge hole. I also removed the lighter plug and replaced it with a 2 prong connector that I bought at NAPA for $3. That way it will plug into the Battery tender plug I already have in the bike.
    0907151831.jpg0907151821.jpg
    As you can see in the pics I taped the cord unto the motor, then folded it back and taped it again, to prevent it from getting yanked from the terminals. I also placed a big glob of Goop shoe glue on each terminal to prevent shorting and stress breaks.
    To test it I let air out of the tire until it was at 0 PSI and the rim was almost on the ground. Got out my stopwatch (phone actually) and let it run for 2 minutes. Tire was up to 8 PSI. Let it run an additional 2 minutes and it was up to 14 PSI.
    Wrapped up it will fit in the extra space in the battery box since I switched to the lithium battery.
    Total price $11 and I have an extra 2 prong plug.
    Fred, VintageGW, TW-Brian and 4 others like this.
    Chris Vogel
    Current Rides
    2014 Zuma 50, 2004 TW200, 1992 R100GS, 1987 TW200
    Current Projects
    1982 550 Vision, 1986 XL600R

  2. #2
    Senior Member Borneo's Avatar
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    Good idea, and a nice modification for an inexpensive pump. However, when it's cold, wet and raining, and you have a flat hundreds of miles from nowhere, I suggest this. It's not cheap, but it's the best.

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  3. #3
    Senior Member SHAG's Avatar
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    That's a great idea Sponge. I also carry the CyclePump, on my GS. Still carry a Slime inflator sealer on everything.
    Smitty Blackstone likes this.
    Go like hell, You'll get there quicker!

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  5. #4
    Senior Member Fred's Avatar
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    Sponge, nice job minimizing and opening up pump body for better cooling. That it fits in the space freed up by the Shorie is pure icing. I have been trying to decide how best to use this space other than with foam. Perhaps I'll uncage my similar pump and follow your inspiration, see if mine can shrink enough to fit in battery box. My battery tender leads are way too long anyways, will shorten them too. And if I bust my dusty old $10 pump giving it the "bobber" treatment I can always buy Borneo's $100 CyclePump.
    Last edited by Fred; 09-08-2015 at 07:55 PM.
    2003 TW200 "Betty Boop"
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  6. #5
    Senior Member Smitty Blackstone's Avatar
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    +1 on the Cyclepump.

    Good product.

    I keep a slime inflator in the BMW and the Fatboy.

    In the Ultra and the TW, there is a Cyclepump.

  7. #6
    Senior Member jb882's Avatar
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    Ill put another vote out there for the cyclepump. I use mine all the time for airing up after going off road. I have killed other cheaper pumps in no time, the cyclepump has never let me down. I have done everything form airing up a low pressure tire back to street to seating a bead with it.

    For me any tools that are designed to get you out of a bind bust be reliable, the cyclepump is just that.
    Pair of 2006 TW's modded to the hilt and a Ducati Multistrada.

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  8. #7
    Senior Member RockyTFS's Avatar
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    Yep....CyclePump is a one time, lifetime purchase.....how many years do YOU figure on riding?
    Rocky
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  9. #8
    Senior Member sponge's Avatar
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    I noticed that as it was running it was flinging a bit of oil off the connecting rod. since there was no way to replace that oil inside its plastic case I have to assume it was not going to be a long life product. As it is now i can put a drop or two on the bottom of the piston and connecting rod every time I use it. I would hope this gives it a bit more life.
    Chris Vogel
    Current Rides
    2014 Zuma 50, 2004 TW200, 1992 R100GS, 1987 TW200
    Current Projects
    1982 550 Vision, 1986 XL600R

  10. #9
    Senior Member sponge's Avatar
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    Quote Originally Posted by Fred View Post
    Sponge, nice job minimizing and opening up pump body for better cooling. That it fits in the space freed up by the Shorie is pure icing. I have been trying to decide how best to use this space other than with foam. Perhaps I'll uncage my similar pump and follow your inspiration, see if mine can shrink enough to fit in battery box. My battery tender leads are way too long anyways, will shorten them too. And if I bust my dusty old $10 pump giving it the "bobber" treatment I can always buy Borneo's $100 CyclePump.
    occurs to me that I never posted a pic of the modified pump in the battery box
    1003150917.jpg
    I've used it a couple of times seems ok so far
    Chris Vogel
    Current Rides
    2014 Zuma 50, 2004 TW200, 1992 R100GS, 1987 TW200
    Current Projects
    1982 550 Vision, 1986 XL600R

  11. #10
    Senior Member Fred's Avatar
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    I am tempted to forgo pneumatics all together.. Just need to remember to keep weight over the forks...images-4.jpeg
    Mel and Gerry like this.
    2003 TW200 "Betty Boop"
    2006 TW200 "Nibbler", a.k.a. “Mr.Gizmo"
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