What is the single sprocket spacer made of?

[gr81_833]

The part FRC-2005-112-010 is not included in our robotics kit. It specifies that the part needs to be manufactured. There are schematics included but they don't say what material is to be used. Please help...

Thanks, Team 434

[HPA_Robotics_13]

My team is having a hard time understanding the schematics for this part from the IFI Robotics website. Anyone with any further documentation or advice on this subject would be a big help!

[dez250]

From the FIRST Q&A System:


ID: 1062 Section: 1.1 Status: Answered Date Answered: 1/11/2005

Q: We seemed to get conflicting information, Are the tetras made from sched. 40 PVC or 80 PVC?

A: The tetras are made from Schedule 40 PVC. The 3/4 in. Schedule 80 PVC listed on the Advance Purchase List is for fabrication of spacers used in the drive train assembly.

[edit] here is another Q&A post about the spacers:
ID: 1084 Section: 5.1.2 Status: Answered Date Answered: 1/11/2005

Q: We did not receive this "special collar" used to separate the chain sprocket and the transmission box as showed in the video. It is not listed in the parts list. Would you please let me know how to get it?

A: The collar is item 4 on the Advance Purchase List sent to all teams. (6 in. of 3/4 in Schedule 80 PVC tubing or a 3/4 in Schedule 80 PVC pipe nipple.
[/edit]

Maybe Paul of John can give an offical answer if it is the SCH80 PVC that is used for this spacer needed.

[Paul Copioli]

I will also post the answer on the IFIrobotics forums page regarding this issue. Look on the ifirobotics web page for a zip file, which will be located at http://www.ifirobotics.com/kitbot.shtml very shortly. The zip file contains the actual drawings (in PDF format) that were used to make the parts.

The spacer is, indeed, modified schedule 80 pipe. However, you can make it from any material you like.

-Paul

P.S. - I am supposed to put all of my answers on the ifirobotics forum, but this is my one and only deviation from that.