Reversible Bumpers

[ProgramLuke]

My team is looking at using reversible bumpers instead of a red/blue set system, has anyone had any issues with reversible bumpers such as http://www.chiefdelphi.com/forums/sh...0&postcount=1?

[Taylor]

We used 2809 K-Botics' tutorial to great success, and highly recommend it. We also endorse JVN's idea of using silver sharpies for the numbers (be prepared to go through about a dozen markers though).

[Alpha Beta]

We used a very similar reversible bumper design this season, and loved it. Robot is pictured here: http://www.chiefdelphi.com/media/photos/36489

You can see the indent where the flap splits, and the extra velcro strip used to secure the flap when the bumper is flipped to blue in the picture.

[treffk]

Team 1802 does not use reversible bumpers. Although our bumpers are red(I think) and we have a blue bumper cover that goes over it. This system has worked very well for our team for the past few years. PM me if you want more info my mom made them.

[Red2486]

Originally Posted by treffk

Team 1802 does not use reversible bumpers. Although our bumpers are red(I think) and we have a blue bumper cover that goes over it. This system has worked very well for our team for the past few years. PM me if you want more info my mom made them.

My team did this as well this year. The blue bumper cover kept getting us in trouble with the inspectors at competition because the cover had been made too large and would break the plane of the robot and it was a saftey hazard because it was sagging a little too close to our wheels and the inspectors were afraid it would get caught in them. So, the moral of the story is that it works if you make sure the cover is tight and fits the bumbers well.

[Peter Matteson]

We have done this the last 2 years and frankly we won't do it again next year.

The Positive:
The ability to have both color bumpers on at the same time is great and it's one less thing to transport or manage in your pit.

The negative:
This takes SIGNIFCANTLY longer to make than two single color sets.
No matter how much velcro you use they never quite look right.
The biggest negative we found was they caught on the bumpers of teams defending us more that the smooth single color style would.

[Al Skierkiewicz]

Luke,
What ever style you choose, please be advised that rules change from year to year. It is unlikely that the bumpers will be dropped anytime in the foreseeable future, however, the design criteria do change. It is best to wait until the rules are released.

[Brandon Holley]

125 used the reversible bumpers for the 2010 season, and standard swap out bumpers for this past season.

In 2010, we really liked the idea of being able to swap the color so easily. Luckily enough, one of our students is a very talented seamstress and volunteered to make the bumpers. As time went on we realized how much more difficult this was than we initially thought. I believe in the end, our student spent over 20 hours sewing the things to get them right.

Even after they were sewed properly, they still didn't look quite as clean as they could be (mainly at the corners where 2 bumpers met). They functioned quite well for the season as a whole, but it was a much larger undertaking than initially thought. That is what led us to change to regular bumpers for 2011.

Hope it helps.

-Brando

[Aren Siekmeier]

Interesting stuff in this thread.

We've done two full sets of bumpers the last two years, and I've often thought about maybe going to a cover or reversible fabric, but from the anecdotes here I'm kind of happy with where we are. We use pins that pop in and out to quickly replace the bumpers, and the solid fabric fastening does make it more durable and gives us more options for numbers if we want.

[pfreivald]

Our bumper skirt was problematic and, at the end of the day, looked sloppy. We'll probably be making two sets of bumpers for 2012...

...although I really wish they'd just go back to flags or lights to indicate alliance color. It was a lot less wasteful.

[Jon Stratis]

We used reversible bumpers this year, and will never go back (assuming the rules don't force us to, of course). We had some amazing parent help in doing it - one of the senior's parents came in and worked with a couple of students to pretty much do all of the cutting and sewing in one evening. Assembled them and had no problems the entire season with them.