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Re: Helicopters C

Posted: January 10th, 2018, 6:25 pm
by JojoCho
parikhy wrote:This is going to sound crazy, but any advice on hand cranking? Anyone have any tips or know how to build a winder? I don't think I will have one by the time regionals comes around, although I am doing my best to try and get my hands on one.
Worst case scenario you could always borrow a winder from someone at the tournament. But if you really want to make one, you could get like some sort of block, drill a hole through it, stick a dowel through the hole (make sure it can rotate freely), attach a sort of hook to the end of the dowel (holds the rubber band), and have a sort of handle on the other side of the dowel which you will use to turn. So it's like
7-----[ ]--o
7 is the rubber band hook, ---- is the dowel, [ ] is the block thing (use this to hold on while winding, basically the yellow block thing you see on Dave's winders), o is the turning handle

Really ratchet design but if you're short on time this might work

Re: Helicopters C

Posted: January 10th, 2018, 9:00 pm
by DoctaDave
parikhy wrote:This is going to sound crazy, but any advice on hand cranking? Anyone have any tips or know how to build a winder? I don't think I will have one by the time regionals comes around, although I am doing my best to try and get my hands on one.
You can make one out of lego gears and brackets. I believe I've seen a picture of one floating around the forums somewhere, but I can't find it. :(

Re: Helicopters C

Posted: January 10th, 2018, 9:56 pm
by DaPlug
What are the highest raw times people have seen at competitions lately for chinooks?

Re: Helicopters C

Posted: January 11th, 2018, 5:26 am
by eli9778
Is it legal to 3D-print your helicopter's propellers?

Re: Helicopters C

Posted: January 11th, 2018, 5:48 am
by Unome
DaPlug wrote:What are the highest raw times people have seen at competitions lately for chinooks?
I've yet to hear of anything higher than about 2:15 raw time.

Re: Helicopters C

Posted: January 11th, 2018, 7:20 am
by MGoGolf
Can someone post a picture of a working Chinook? New coach, tried numerous designs but not getting close.

Re: Helicopters C

Posted: January 11th, 2018, 7:21 am
by Rêveur
DaPlug wrote:What are the highest raw times people have seen at competitions lately for chinooks?
What Mira Loma's tournament just a couple days ago? What were the best time then? Who were the best teams?

Re: Helicopters C

Posted: January 11th, 2018, 7:46 am
by Unome
MGoGolf wrote:Can someone post a picture of a working Chinook? New coach, tried numerous designs but not getting close.
An approximation of Dave's design

Re: Helicopters C

Posted: January 11th, 2018, 9:34 am
by MGoGolf
Unome wrote:
MGoGolf wrote:Can someone post a picture of a working Chinook? New coach, tried numerous designs but not getting close.
An approximation of Dave's design
Thank you! Assuming two motors are used, it would seem difficult to have a team of 2 wind up two motors, attach, and set off at the same time.

Re: Helicopters C

Posted: January 11th, 2018, 10:00 am
by ScottMaurer19
MGoGolf wrote:
Unome wrote:
MGoGolf wrote:Can someone post a picture of a working Chinook? New coach, tried numerous designs but not getting close.
An approximation of Dave's design
Thank you! Assuming two motors are used, it would seem difficult to have a team of 2 wind up two motors, attach, and set off at the same time.
Make one of the stooges shown in the back of the FFM kit instructions