Hold Back Mass

[DY Robotics]

How much Hold Back Mass is legal? By hold back i mean any parts that can be worked on or added on after the robotic is completed and not put in the bag.

[Ty Tremblay]

http://www.chiefdelphi.com/forums/showthread.php?threadid=125921

[Calvin Hartley]

According to the FRC Manual (http://frc-manual.usfirst.org/viewItem/705):

R18
At an Event, Teams may have access to a static set of FABRICATED ITEMS that shall not exceed 30 lbs to be used to repair and/or upgrade their ROBOT. Items made at an Event do not count towards this weight limit.

For Teams attending 2-Day Events, these FABRICATED ITEMS may be used during the Robot Access Period and/or brought to the Event, but the total weight may not exceed 30 lbs. FABRICATED ITEMS constructed during the Robot Access Period and bagged with the ROBOT are exempt from this limit.

Items exempt from this limit are:

the OPERATOR CONSOLE,
BUMPERS, and
any ROBOT battery assemblies (as described in R5-A).

HOWEVER, Frank recently posted in the FRC Blog (http://www3.usfirst.org/roboticsprograms/frc/blog-weather-weather) that the weight limit will be upped to 45 pounds.

[DY Robotics]

Thanks alot

[DonRotolo]

Actually it is 45 pounds weight, not mass.

[Nate Laverdure]

Actually it is 45 pounds weight, not mass.
No, I heard it was £45.

[BBray_T1296]

Actually it is 45 pounds weight, not mass.

So we can bring 6x more to the Lunar Regional than all other regionals? no fair to those not going!

[Chris is me]

The hold back mass this year is, as of yesterday, ~1.399 slugs.

[tStano]

So we can bring 6x more to the Lunar Regional than all other regionals? no fair to those not going!

Seriously though, teams at the Colorado regional get an extra like half pound with witholding at 45 pounds when compared to sea level. Also, their robot can then be like a 1.4 pounds more massive.

g at sea level is 9.80665 m/s^2.
g in Denver is 9.796 m/s^2. I just converted pounds to kg and back again. I didn't want to go screwing around in imperial units.

*I am not actually saying this is an issue.

EDIT: *******Wait, I definitely did that wrong. SORRY GUYS!
its only a half newton difference on a 120lb robot. so like a tenth of a pound at sea level.