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-   -   Bumper Material Poll (http://www.chiefdelphi.com/forums/showthread.php?t=143148)

Alex Cormier 23-02-2016 01:01
Re: Bumper Material Poll
 
Quote:
Originally Posted by RoboChair (Post 1535526)
How does this stuff differ from rip stop nylon?

Mike Marandola 23-02-2016 01:11
Re: Bumper Material Poll
 
Quote:
Originally Posted by Alex Cormier (Post 1544825)
How does this stuff differ from rip stop nylon?
Ballistic nylon is thicker, not as slick, and more similar to 1000D Cordura nylon. We ran CoF tests on about 16 different fabrics, including the ballistic nylon from Rockywoods, and found that it was slicker than Cordura nylon, but not as slick as ripstop.

Alex Cormier 23-02-2016 01:13
Re: Bumper Material Poll
 
Quote:
Originally Posted by Mike Marandola (Post 1544829)
Ballistic nylon is thicker, not as slick, and more similar to 1000D Cordura nylon. We ran CoF tests on about 16 different fabrics, including the ballistic nylon from Rockywoods, and found that it was slicker than Cordura nylon, but not as much as ripstop.
I wrapped the bumpers in ripstop this year. We were replacing the front bumpers with regular cordura due to the nylon taking a beating at our pre scrimmage yesterday.

Mike Marandola 23-02-2016 01:17
Re: Bumper Material Poll
 
Quote:
Originally Posted by Alex Cormier (Post 1544832)
I wrapped the bumpers in ripstop this year. We were replacing the front bumpers with regular cordura due to the nylon taking a beating at our pre scrimmage yesterday.
What ripstop did you try?

Alex Cormier 23-02-2016 01:19
Re: Bumper Material Poll
 
Quote:
Originally Posted by Mike Marandola (Post 1544835)
What ripstop did you try?
http://www.joann.com/rip-stop-nylon/...+nylon&start=1

Mike Marandola 23-02-2016 01:24
Re: Bumper Material Poll
 
Quote:
Originally Posted by Alex Cormier (Post 1544836)
We tested that one and it's a lot thinner than some other ripstops we have. I'll try to snap an up close picture of the Joann ripstop next to ballistic nylon at our meeting tomorrow for comparison.

Alex Cormier 23-02-2016 01:29
Re: Bumper Material Poll
 
Quote:
Originally Posted by Mike Marandola (Post 1544839)
We tested that one and it's a lot thinner than some other ripstops we have. I'll try to snap an up close picture of the Joann ripstop next to ballistic nylon at our meeting tomorrow for comparison.
Thanks, We had no issues on the sides or back bumpers. The front were hit a lot against wood yesterday.

Mike Marandola 23-02-2016 15:41
Re: Bumper Material Poll
 
http://imgur.com/a/uoZpL

From left to right: Joann ripstop - ballistic nylon - Cordura nylon

hectorcastillo 23-02-2016 16:07
Re: Bumper Material Poll
 
Chainmail

Bob Steele 23-02-2016 16:09
Re: Bumper Material Poll
 
Quote:
Originally Posted by Richard Wallace (Post 1535274)
We are going with the slick fabric from RoboPromo.
ditto

GeeTwo 23-02-2016 17:15
Re: Bumper Material Poll
 
Quote:
Originally Posted by hectorcastillo (Post 1545282)
Chainmail
:yikes: Even if you made a triangular robot, getting each corner's bumpers down to under 7# must have been a challenge. Did you source it from Stark Industries, make it yourself, or find another source?:p

Edit: Hmmm.. would chainmail on the robot be considered armor or barding?

Alex Cormier 23-02-2016 17:21
Re: Bumper Material Poll
 
Quote:
Originally Posted by Mike Marandola (Post 1545245)
http://imgur.com/a/uoZpL

From left to right: Joann ripstop - ballistic nylon - Cordura nylon
Which you like the most and what's the cost difference?

Mike Marandola 23-02-2016 18:41
Re: Bumper Material Poll
 
Quote:
Originally Posted by Alex Cormier (Post 1545330)
Which you like the most and what's the cost difference?
The ballistic nylon is about $15/yard and Cordura nylon is $12.50/yard. We are using neither but I would choose the ballistic over Cordura and the Joann ripstop.

AllenGregoryIV 24-03-2016 13:13
Re: Bumper Material Poll
 
We use cordura as well.

What have teams found to be the cheapest bumper material? We want to buy a lot of it to give out to teams with illegal bumpers at events.

Mike Marandola 24-03-2016 13:28
Re: Bumper Material Poll
 
Quote:
Originally Posted by AllenGregoryIV (Post 1562571)
We use cordura as well.

What have teams found to be the cheapest bumper material? We want to buy a lot of it to give out to teams with illegal bumpers at events.
The cheapest that's suitable for bumpers that I have seen is duck cloth or a similar canvas. You can find it online and locally for around $4 a yard.


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