Kickstands

General Discussion about electric bicycles.
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E-HP   1 MW

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Kickstands

Post by E-HP » Jan 02 2021 2:50pm

My kickstand finally gave up and snapped in half. It's the chainstay mounted type that I prefer, since it doesn't interfere with the pedals when deployed. The weak point is that it's a two piece design meant to be adjustable, which introduces points of failure that wouldn't be an issue with a single piece design.

I see two designs among the limited choices, the first being what I've been using:
https://www.amazon.com/dp/B08LS482TN/re ... s9dHJ1ZQ==

And the other having an additional support arm, but seemingly thinner stand. It's still two piece, but possibly less prone to braking. I ordered one, not anticipating that it will be durable, but just to I have something.
https://www.amazon.com/dp/B07WDT7P4N/re ... NrPXRydWU=

I checked the build thread pics and based on that, it looks like only 20% or so of the bikes has kickstands. Sort of makes sense, since very few full suspension bikes accept one, but even the hard tails seem to be missing them. Anyway, curious to see if these are the only games in town for a chainstay mounted stand. Not looking for the centerstand type.

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Chalo   100 GW

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Re: Kickstands

Post by Chalo » Jan 02 2021 3:01pm

E-HP wrote:
Jan 02 2021 2:50pm
Not looking for the centerstand type.
You say that, but using a sidestand on a bike that's much heavier than intended was what caused it to break. If you stand the bike straight up, the stand is much more capable of taking the weight.

https://www.ebay.com/itm/26-Bike-Bicycl ... 3229035290
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MadRhino   100 GW

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Re: Kickstands

Post by MadRhino » Jan 02 2021 3:56pm

A bike does stand fine when it is upside down, if it has a wide handlebar especially. That is what I do with mine, when I don’t just lay it down. It does draw a lot of attention but go figure, bike thieves seem to have absolutely no interest for a bike that is upside down, even if it is unlocked and has a helmet and gloves on the crank. :mrgreen:

If you find this too weird for you, look for Motocross or Enduro kickstands. I remember one that was clamping on the swing arm, that you should be able to adapt.
Make it fool-proof, and I will make a better fool.
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markz   100 GW

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Re: Kickstands

Post by markz » Jan 02 2021 6:28pm

With a bike upside down on its seat/handlebars I find with a read hub motor that it can be a hassle because there is no weight up front to hold the bike down and the bike tends to lift from the handle bars more easily. Easy to fix in the garage because you can shove a handle bar under a tire, or place something on the handle bar.

I've never been able to find a good kick stand. The BB style of kickstand: I've seen the 2 leg style (one to the left one to the right) but when riding both legs go to one side. Then theres the 2 leg style that stays on either side. I've had good luck with chain stay AND BB kickstand for top heavy ebikes with battery ontop of rear rack.

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Chalo   100 GW

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Re: Kickstands

Post by Chalo » Jan 02 2021 6:32pm

markz wrote:
Jan 02 2021 6:28pm
I've never been able to find a good kick stand. The BB style of kickstand: I've seen the 2 leg style (one to the left one to the right) but when riding both legs go to one side.
Ursus Jumbo is the best two-leg, center mounted kickstand around. It's rated for something like 175 pounds, and it opens to about 18 inches across.
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Re: Kickstands

Post by MadRhino » Jan 02 2021 6:44pm

markz wrote:
Jan 02 2021 6:28pm
With a bike upside down on its seat/handlebars I find with a read hub motor that it can be a hassle because there is no weight up front to hold the bike down and the bike tends to lift from the handle bars more easily...
That is how you know the weight distribution/geometry of your bike is wrong. Fit batteries more forward, and/or more batteries, to compensate the weight of the hub. Stretch the wheelbase, slacken the head angle, shorten the front suspension travel, tune your cockpit to the front...
There are many ways that can be used and combined to achieve proper balance, and it will make your bike a better ride.
Make it fool-proof, and I will make a better fool.
Current bikes
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Trek Session 10 mod. Variable geometry. 70mph
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E-HP   1 MW

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Re: Kickstands

Post by E-HP » Jan 02 2021 9:09pm

Well at least shipping was fast. Even though this design looks less sturdy, the leg is actually one piece cast aluminum (or mystery metal), with no obvious points of failure. Cheap enough that if it fails, it's easy and fast to replace.

https://www.amazon.com/dp/B07WDT7P4N/re ... NrPXRydWU=

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Chalo   100 GW

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Re: Kickstands

Post by Chalo » Jan 02 2021 9:28pm

E-HP wrote:
Jan 02 2021 9:09pm
Well at least shipping was fast. Even though this design looks less sturdy, the leg is actually one piece cast aluminum (or mystery metal), with no obvious points of failure.
I failed to notice how janky your original kickstand was.

This is the industry standard rear kickstand in the USA, by Greenfield:
Image

It costs about 20 clams and like other Greenfield stands, it just works.
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Re: Kickstands

Post by amberwolf » Jan 02 2021 9:51pm

If it's helpful, some years back I was given one that looked almost identical to those to use for DayGlo Avenger at one point...the bottom "adjustable" piece is plastic that fairly loosely fits over the cast "alloy" leg, and it wiggled a lot even when I first handled it, later breaking and having to be glued on to not just fall off while riding. The farther out it must be adjusted to, the more load is taken by the hollow plastic part and the sooner it breaks.


The cast mounting bracket that the leg pivots from has a metal (possibly steel) pin or screw (can't remember) that acts as the hinge pivot, but the stress isnt' placed directly thru the line of the pivot, it's kind of a twisting force and eventually broke one side off of the bracket, in a line with and thru the hole for the pin/screw.

The frame clamps never held properly, so I'd have to retighten it jsut about every ride.


I had a few similar types, including one like the one Chalo posted, which also broke at the pivot on the bracket, and none of them were very good or useful on anything other than regular lightweight pedal-only bikes (and not ones used with any kind of cargo).


The only one I ever got (that I didn't make myself) that worked and didnt' break was a two-leg like an upside-down U with little feet/bars sticking out from the bottom of the U legs. (though likely most of the fixed two-leg types would've worked ok)

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E-HP   1 MW

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Re: Kickstands

Post by E-HP » Jan 03 2021 8:44pm

amberwolf wrote:
Jan 02 2021 9:51pm
If it's helpful, some years back I was given one that looked almost identical to those to use for DayGlo Avenger at one point...the bottom "adjustable" piece is plastic that fairly loosely fits over the cast "alloy" leg, and it wiggled a lot even when I first handled it, later breaking and having to be glued on to not just fall off while riding. The farther out it must be adjusted to, the more load is taken by the hollow plastic part and the sooner it breaks.
Yup, I can see the plastic foot as being the weak(est) point. I may have some tubing lying around that I can use to make a permanent foot from. I can epoxy it in place or use set screws, or both. As it is, the chainstay seems low enough that the plastic foot doesn't need to be extended much, and have the bike pretty upright (a lot more upright that the old kickstand). The extension/support arms appears to work, compared to the old one that only relied on clamping to the chainstay. I think if I locktite the bolts it might hold them. I'll do that for now, and use the plastic foot until it fails.

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Re: Kickstands

Post by markz » Jan 03 2021 10:08pm

Welding would be ideal but not many home gamers have a personal welder to use, maybe ask your friends, or hit up one of those DIY mechanic garages as they always have welders to use.

I don't think epoxy would work well alone.

I would try to think of something that can wrap around the metal part stub of the kickstand but yet still give you the length you need, almost like any sort of pipe. Hit up your Homeless Despot store and see whats available in the aisles. Pack that metal epoxy in there and throw on some fasteners.

Galvanized Pipe would be heavy but strong. 1/2" seems all they have in shorter ID sizes, might be to big for the stub.
https://www.homedepot.com/b/Plumbing-Pi ... 1vZ1z18i31

Well looky look, I see Homeless Despot's got 1/4" galvanized. Thats the ticket, if it fits!
https://www.homedepot.com/s/1%252F4%252 ... ipe?NCNI-5

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Re: Kickstands

Post by donn » Jan 04 2021 11:04am

markz wrote:
Jan 03 2021 10:08pm
I would try to think of something that can wrap around the metal part stub of the kickstand but yet still give you the length you need, almost like any sort of pipe.
I lengthened a kickstand leg with a left over scrap of copper water supply pipe. Its inside diameter was a good fit with the leg's tapered outside diameter.

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Re: Kickstands

Post by PRW » Jan 05 2021 2:10am

i have been using one of these https://www.ebay.com/p/8002995864 on each of my heavier bikes - they have been very reliable. One I had to cut down to fit...
viewtopic.php?f=6&t=71666&p=1376785&hil ... d#p1376785

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