Electric mini pumps

[Cheng-Hong Li]

Hello all, 

I'm intrigued by these new electric mini pumps, like the Cycplus AS2, to replace my mini hand pumps. Has anyone tried them on brevets? What's your experience? Thanks!

[Paul G. Rozelle]

Got turned onto that pump a few months ago. Love it!

Brevet drawbacks: not waterproof--bag is nice but not reliable, IMO, and what if it's raining when you need to use it?--and only good for two uses on a 25c tire to 110 psi. Recommend carrying a back up pump.

It's brilliant for club rides.

Paul Rozelle

On Sun, May 4, 2025, 09:30 Cheng-Hong Li <chengh...@gmail.com> wrote:

Hello all, 

I'm intrigued by these new electric mini pumps, like the Cycplus AS2, to replace my mini hand pumps. Has anyone tried them on brevets? What's your experience? Thanks!

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[Colin Moy]

It's good for the last 10-20 psi especially when you're tired/cold/wet on brevets. Use a waterproof bag and keep the hand pump.  This will also extend the battery.

colin moy

#11115

Sent from my iPad

On May 4, 2025, at 6:34 AM, Paul G. Rozelle <proz...@gmail.com> wrote:



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[Jim Vajda]

I have the newer CYCPLUS AS2 Pro and am impressed with it. IMO it's better than CO2 and a mini valve (gets really cold, no clue what pressure is in the tire, potential for dangerous mistakes in the dark, and once they are gone, they're gone), and better than a mini hand pump too (no need for 100x pumps including the excruciating last pumps to get it close to normal pressure, just connect it and hit the button). I really like how easy it is, and the integrated pressure measurement means I get the same air in the tire as I would normally, no guessing games.

Downsides are its not waterproof and the display is on the wrong side if you want to attach it with the valve stem pointing down, which is the most comfortable way to do it for me. It's also pretty loud, which may attract unwanted attention in places where you'd rather be more discreet. I got 3x full refills of 28mm tires to 85 psi in my testing, but its USB-C rechargeable (and USB PD friendly) so it can recharge from a battery pack or a wall charger at a stop if needed.

I used to attach a medium length frame pump to by bike for longer brevets but now I don't bother.

Jim Vajda

[Brook Henderson]

Another vote for the CYCPLUS AS2 Pro. I just returned from supporting the overnight control for our 600k. One of the riders used it to check and top off his tire pressure before taking off for the final 200k. 

Pumps like this are great for when you're travelling with your bike packed and you don't have space/weight for a proper floor pump. 

-Brook

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[Sharon Morejon]

Best device I have ever purchased. I have helped so many cyclists. I highly recommend it. 

[ken jessett]

I wonder the need to be constantly  inflating tires anyway. There are many who say inflating at the start of a long 1200 K brevet is sufficient to last the ride. I pump mine up before a weeks riding and at the end it is usually only down 5PSI at he end of the week. There was a discussion here some time ago about lower pressures being just as effective as higher pressures. Maybe the whole 120PSI for tires is overstated anyway? Just a thought.

[Mark Schenkel]

Yet another vote for the CYCPLUS AS2 Pro. I get 3 full refills to 65psi on my 32mm tires. I love all of the previously mentioned advantages: the ease of use, the built-in gauge, the ability to set the desired pressure and it will shut off when reached, etc. As for not being waterproof, I keep it and my other tools in a water bottle type container in my 3rd bottle cage (under the downtube), so that's not an issue.

Like Sharon said, best device I've purchased recently.

Mark

[Sheri Rosenbaum]

If you are looking to buy an ePump, many manufacturers are coming out with a digital ePump. You set the exact PSI and the pump shuts off when it hits that pressure. Eliminating the guess work. 

Some of the brands include Muc-Off, Topeak, and Silca. Unfortunately with the tariffs, Silca has stopped importing the ePump as cost prohibitive. 

Sent from my iPhone

On May 5, 2025, at 7:08 AM, ken jessett <kenje...@gmail.com> wrote:

I wonder the need to be constantly  inflating tires anyway. There are many who say inflating at the start of a long 1200 K brevet is sufficient to last the ride. I pump mine up before a weeks riding and at the end it is usually only down 5PSI at he end of the week. There was a discussion here some time ago about lower pressures being just as effective as higher pressures. Maybe the whole 120PSI for tires is overstated anyway? Just a thought.

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[Kitty Goursolle]

 I bought the CYCPlus AS2Pro. Normally I don't like gadgets but I decided I would spring for this one, about $109, because following a recent wrist fracture, my right hand is still too weak to do any pumping on a hand pump. Also, I like that I won't be wasting CO2 cartridges anymore. I tried it out on both Presta and Schrader tubes. I love the way that it worked, inflating to the designated 72 psi recommended for me at the Silca website. I also tried it on my townie bike with Schrader valves, worked like a charm using the included converter.  I pumped up a total of three tires in all and there is still some power left. See how it works and a review at the Overbiked Randonneur on Youtube: https://youtu.be/JBs6ReNo7I0?si=CWngxxalDB_qoXWU

[Cheng-Hong Li]

Thank you, all! It sounds like Cycplus is highly recommended. I just ordered one, the AS2 Pro, from Amazon ($109). 

I also watched Silca's video that they cannot launch their electric mini pump in the US due to tariffs. I guess Amazon is selling Cycplus electric pumps from their inventory? 

I have been searching for an ideal pumping solution for road-side repair. So far nothing hits all the boxes. I've experienced CO2 inflator failures (almost doomed a 300k ride), valve core unscrewed after 400+ pumping actions (Lezyne's screw-on head is notorious for this flaw), or a damaged valve core (Silca Tactical mini pump). 

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[Emily O'Brien]

I think it’s worth putting in a plug for the Topeak "Morph" series mini pumps. I’ve used the Road Morph for years, and while it isn’t the tiniest out there, it has a hose and basically works like a mini floor pump, and even has a gauge. When I was living overseas as a student years ago, I got by without even having a floor pump at all. It really only takes a little longer than a floor pump would, and the hose means you aren’t going to break off the valve stem or anything. It’s not the smallest mini-pump in the world, but the convenience makes up for it IMO. 

If you need a fast burst of air to seat a tubeless tire, it won’t do that. But otherwise, it’s very easy and reliable and it won’t run out of battery or cartridges. 

Emily 

RUSA 3597

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[Julien]

I got the AS2Pro back in December, and carry it instead of my previous mini pump (silca for example).

I prefer this setup, because it's always been difficult for me pumping on a little mini pump while riding on an event between the stress to fix things up and the delicate junction with the valve that makes it easy to leak more air out than pumping in. With the electric mini-pump, it's super easy to connect and resolve that particular problem.

On reliability, everything fails eventually even regular mini-pump. As it turns out this past weekend, a fellow rider I was teaming with got a puncture. We stopped, and he tried to use his lovely pump which he had a long history with on several epic rides. And then, on the first stroke, the connector disintegrated and pumped out of the valve core in various pieces on the ground. With time, UV exposure, temperature variation, water, any part eventually degrades and breaks down. The electric version is not immune to this, it will also eventually fail, but carrying in a saddle (or any) bag gets a bit less exposure. It is sensitive to water apparently (no issue so far), so probably best to double bag it and use it carefully under rain.

On the topic of battery, yes it can refill a tire multiple times, I used it on several 700*32. The battery is a relatively small capacity. On the plus side, it's not long to charge and it's not uncommon to carry a little (or not) USB battery nowadays (for phone and light potentially).

I found it pairs well with tubeless setup, because when you have a puncture, you'd often would like to have the sealant do its work which requires putting in more air and potentially rotating the wheel slightly to let the sealant go through the hole. That is relatively easy to do with the electric mini-pump.

Comparing to CO2, it is also better: less waste, less chance to get those fingers freeze-burned, and also CO2 doesn't keep the pressure as well as regular air.

There might be new product available by now, I haven't looked recently, but that particular model worked very well so far. Funny, I actually used it on 2 occasions on different rides, but for my teammate, I've only practiced with it at home. I would recommend this product.

[Russ Loomis]

Emily, I use the Topeak mtb series pump and with the Fillmore valve I can set a tubeless 650B x 47 tire bead with my hand pump.

Russ RUSA 38
The not yet ready for prime time cyclist

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[sha...@gmail.com]

Because I live in Seattle and ride in all weather, I’ve discovered that some hand pumps aren’t waterproof either.

 

I’ve had two pumps stop working due to water ingress which presumably caused degradation of seals or metal corrosion: A Topeak Road Morph G, and a Silca Tattico.

 

I’ve seen some all-weather cyclists put them in plastic bags, but I carry my pump in an oversized saddlebag now.

 

• Shaun

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[Kitty Goursolle]

Shaun, Emily and all, I've had the Topeak Morph fill up with water, and stop working. After this happened to me on a ride to my favorie donut shop in San Jose, I asked them for some Crisco. I diassembled the pump, greased the o-rings and etc, and voila, got it wotking again. As always, YMMV. since then, I cover the air outlet with duct tape and a finger cut from a rubber glove to keep water out. 

In a similar vein, at PBP 2011, a moderate rain caused my Edulux light to stop working... oh merde!!. I had a "secondaire" so was still legal to ride. After a rain free interval, the Edelux dried out and worked again...but after that, I cut out a wide bit of discarded inner tube, and put the "rubber band" around the on-off bezel on the light to protect it. Later on, Peter White Cycles replaced the Edelux for me, no charge. 

Just goes to say, randonneuring will break amost anything. So I will still carry my Topeak Road Morph and the new electric mini pump. Belt and suspenders!

[Jesse Marsh]

The Topeak Morph has a few shout-outs here. Has anyone found a source for replacement parts for rebuilding these? The seal in particular wears out eventually.

Jesse

[Jake Kassen]

FWIW, I've had the seal wear out on every mini pump I've ever used after a while. I prefer the Morph but do need to replace it after 5-6 years. That crisco emergency hack is awesome.

The electric pumps seem intriguing but I'd be worried about dead batteries given I normally go months without needing a pump and then get a string of flats in short order.

Jake

> -------Original Message-------
> From: Jesse Marsh <jesse....@gmail.com>
> To: Randonneurs USA <randonn...@googlegroups.com>
> Subject: Re: [RUSA] Electric mini pumps
> Sent: 09 May '25 22:24
>
> The Topeak Morph has a few shout-outs here. Has anyone found a source
> for replacement parts for rebuilding these? The seal in particular
> wears out eventually.
>
> Jesse
>

> On Thursday, May 8, 2025 at 8:28:27?AM UTC-7 Kitty Goursolle wrote:
>
> > Shaun, Emily and all, I've had the Topeak Morph fill up with water,
> > and stop working. After this happened to me on a ride to my favorie
> > donut shop in San Jose, I asked them for some Crisco. I diassembled
> > the pump, greased the o-rings and etc, and voila, got it wotking
> > again. As always, YMMV. since then, I cover the air outlet with duct
> > tape and a finger cut from a rubber glove to keep water out.
> > In a similar vein, at PBP 2011, a moderate rain caused my Edulux
> > light to stop working... oh merde!!. I had a "secondaire" so was
> > still legal to ride. After a rain free interval, the Edelux dried
> > out and worked again...but after that, I cut out a wide bit of
> > discarded inner tube, and put the "rubber band" around the on-off
> > bezel on the light to protect it. Later on, Peter White Cycles
> > replaced the Edelux for me, no charge.
> > Just goes to say, randonneuring will break amost anything. So I will
> > still carry my Topeak Road Morph and the new electric mini pump.
> > Belt and suspenders!
> >

> > On Wednesday, May 7, 2025 at 9:30:19?AM UTC-7 sha...@gmail.com

> > wrote:
> >
> > Because I live in Seattle and ride in all weather, I've discovered
> > that some hand pumps aren't waterproof either.
> >
> > I've had two pumps stop working due to water ingress which
> > presumably caused degradation of seals or metal corrosion: A Topeak
> > Road Morph G, and a Silca Tattico.
> >
> > I've seen some all-weather cyclists put them in plastic bags, but I
> > carry my pump in an oversized saddlebag now.
> >

> > * Shaun
> >
> > FROM: randonn...@googlegroups.com <randonn...@googlegroups.com> ON
> > BEHALF OF Mark Schenkel
> > SENT: Monday, May 5, 2025 9:24 AM
> > TO: Randonneurs USA <randonn...@googlegroups.com>
> > SUBJECT: Re: [RUSA] Electric mini pumps

> https://groups.google.com/d/msgid/randonneurs-usa/041bd589-6db7-4ca6-a6ae-858a02247b2fn%40googlegroups.com.
>

[C. Duque]

Jesse, I got replacement parts for a cheap Blackburn pump I keep on my commute bike, directly from them. I contacted their customer service and they sent me the rebuild kit for free. 

Worth a try with topeak.

Carlos

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