Electronics, Lighting, & Gadgets - CREE 8-way light changes modes with being bumped. Is there a fix?

Bought two of these (http://www.dealextreme.com/details.dx/sku.16501)from DX and love the light I get from them. In fact, I bought two, but only run with one on at a time, because they are so powerful (even at 20+mph). Problem is, there are parts of my ride that get a bit bumpy, and on these segments, the light will change modes, cycling through the various flashy patterns, none of which I ever use.

Is there a fix? A workaround? I only ever use the brightest mode, so I'd settle for a way to make these into just single mode lights.

And yes, I know I could've bought cheaper models with fewer modes. I screwed that part up.

Searching the threads, someone suggested putting a piece of aluminum foil between the spring at the battery at the endcap. I'll give that one a shot.

Any other suggestions? Feel free to ridicule me for buying a light with exactly 7 more modes than I need.

I replaced the weak spring in the endcap with a much stronger one from a donor flashlight.

Some have suggested the purchase of a button magnet, often found at craft stores. Fit it between the spring and the battery.

when using a magnet it must be used on the positive end, not the tailcap.. It is best using a rare earth magnet, 5/8 or 1/2 inch size is best.. I have used the 5/8 which is a perfect fit for 18650 batteries..

My 18650 light did the same thing till I added magnetic 18650 extenders to the battery.

http://www.dealextreme.com/details.dx/sku.4248

Perfect fit, used about 5 per battery.

My 18650 light did the same thing till I added magnetic 18650 extenders to the battery.

http://www.dealextreme.com/details.dx/sku.4248

Perfect fit, used about 5 per battery.

Ordered! At $2.36 for a 20-pack, it seemed a reasonable gamble.

Sometimes you can add an o ring in front of the lens, this fixed one of my cheap DX lights.

Also, cells vary in length, despite manufacturing standards. Try another brand of cell.

Finally, add a little tape to sides of cell to reduce movement in flashlight. May need a strong magnet to remove cell from flashlight once you don this - it won't slide out easily once you do this.

Bought these from a US Seller and they fit perfect.. Only need to use 1 or 2 max..

http://search.ebay.com/search/search.dll?sofocus=bs&sbrftog=1&dfsp=32&satitle=5%2F8&sacat=-1%26catref%3DC6&sadis=200&fpos=91786&sabfmts=1&ftrt=1&ftrv=1&saprclo=&saprchi=&seller=1&sass=phoenixtradingcompany&fsop=32%26fsoo%3D2&fgtp=

when using a magnet it must be used on the positive end, not the tailcap..

Why? I've been using it on the tail end with no ill effects so far.

Why? I've been using it on the tail end with no ill effects so far.

the 2 p7 lights I used them on would not work on the negative side, only the positive side..