Winch

[edomus]

Has anyone thought about how to winch themselves up to the bar. I was thinking about taking apart a boat trailoring winch and using cable. Any ideas?

[Meredith Rice]

Originally Posted by edomus

Has anyone thought about how to winch themselves up to the bar. I was thinking about taking apart a boat trailoring winch and using cable. Any ideas?

Yep. Looks like this is a popular idea. I know we have been considering it. Here is a thread with a discussion about how winches work and some opinions of them.

http://www.chiefdelphi.com/forums/sh...ighlight=winch

[Tytus Gerrish]

ive desinged a winch
its a Plug&Play winch that reals 15" Per second with a max lift load of 486 Lbs

[Jeremy_Mc]

I don't want to thrash, insult, or even knock the idea of a winch (trust me we would be using one...), but given the 10ft/s rule, how do you plan to address the case of missing the bar with your winch (I'm assuming you're throwing it or somethng of that nature)?

[Arefin Bari]

the winch looks nice tytus... seems like you are suggesting to use chiphua motor which is also known as atwood. there are lot of teams out there who would use the chiphua for drive train... a lot of team out there had drill and chiphua using for drive train last year, and they might do it again. what would you suggest using some other motor such as window or globe... its probably gonna take a while for the winch to move... but there is going to be a lot of torque...

[Tytus Gerrish]

were talking about winches not about how your getting the cable up on the bar Save that for elsewhere

[SarahB]

Originally Posted by expiredzbyte

the winch looks nice tytus... seems like you are suggesting to use chiphua motor which is also known as atwood. there are lot of teams out there who would use the chiphua for drive train... a lot of team out there had drill and chiphua using for drive train last year, and they might do it again. what would you suggest using some other motor such as window or globe... its probably gonna take a while for the winch to move... but there is going to be a lot of torque...

Actually I think he's using the van door motor. Notice the gearbox at the end. This is better than using the CIM because the van door motor uses a worm gear, which means it cannot be backdriven(at least theoretically) so you don't have to worry too much about it falling after power is cut at the end of the match.

[Jay TenBrink]

Originally Posted by Tytus Gerrish

ive desinged a winch
its a Plug&Play winch that reals 15" Per second with a max lift load of 486 Lbs

Nice looking winch. Thanks for posting it, we might use it.

Have you considered cutting a helical groove in the drum to keep the cables from crossing and tangling? This is common for many automotive applications (window lift mechanisms, power sunroofs, etc.)

How will you anchor the ends of the cable into the drum?

Looks like the power van door motor in your design which is a non-backdriveable worm gear, meaning it requires no brake to keep you hangin. An appropriate application.

[Tytus Gerrish]

its just a hole in the drum
If you have more questions about my winch Im me or e-mail me. Keep the back and fourth klutter off the forums.

[Arefin Bari]

Originally Posted by SarahB

Actually I think he's using the van door motor. Notice the gearbox at the end. This is better than using the CIM because the van door motor uses a worm gear, which means it cannot be backdriven(at least theoretically) so you don't have to worry too much about it falling after power is cut at the end of the match.

i apologize.. i was about to edit the whole post when you replied back... i didnt really pay a lot of attention to the whole post from tytus... and i looked at the winch mechanism from the bottom view... and i am pretty sure that anybody will make that mistake thinking its a atwood... if they have just seen it from the bottom view.... once again... i apologize...

[mightywombat]

As an offshoot of the winch idea and as a way to save weight I would suggest researching lightweight stronger than anything rope. Particularly the type used on sailboats that is designed to hold incredible loads. Check it out:
http://www.layline.com/llf/llpages/h...riga/page2.htm

Just an example:
1/8" diameter
.6 lbs/100 feet
2200 lbs break load

[edomus]

Originally Posted by mightywombat

As an offshoot of the winch idea and as a way to save weight I would suggest researching lightweight stronger than anything rope. Particularly the type used on sailboats that is designed to hold incredible loads. Check it out:
http://www.layline.com/llf/llpages/h...riga/page2.htm

Just an example:
1/8" diameter
.6 lbs/100 feet
2200 lbs break load

I was thinking the same thing. Infact, I have been researching boat trailor winches that are designed for rope. I figure I would strip them down.

[edomus]

Originally Posted by Jeremy_Mc

I don't want to thrash, insult, or even knock the idea of a winch (trust me we would be using one...), but given the 10ft/s rule, how do you plan to address the case of missing the bar with your winch (I'm assuming you're throwing it or somethng of that nature)?

Use some other mechanism, such as a arm to put the hook up

[deltacoder1020]

a great big old helium balloon!

[Gary Dillard]

Originally Posted by Jay TenBrink

Looks like the power van door motor in your design which is a non-backdriveable worm gear, meaning it requires no brake to keep you hangin. An appropriate application.

You would think so, but unfortunately I believe that's not the case with this particular worm drive gear; I seem to remember using it for a lift one time, only to find out it would backdrive when the power was cut - it had an oddball pitch angle so that it could be backdriven (a safety feature since it's used for closing van doors). I know they've changed the particular van door motor we get in the kit since a few years back - can anybody confirm if this motor can be backdriven?