Help with cobracrane dolly with multiple pvc pipes at DVinfo.net

Go Back   DV Info Net > The Tools of DV and HD Production > Support Your Local Camera > Dolly / Track / Cable


Reply
 
Thread Tools Search this Thread
Old June 28th, 2011, 08:30 PM   #1
Regular Crew
 
Join Date: Jun 2010
Location: Fresno, CA
Posts: 28
Help with cobracrane dolly with multiple pvc pipes

I got a cobracrane dolly and I have about 30 feet (60 feet all together, 30 feet on each side) of PVC pipe, I've found a way to connect them all, I put smaller pipes inside the ends of the pipes with duct tape to keep them held in, and it works decently enough but it doesnt make for the straightest dolly track or the smoothest track, what is the best solution for putting together PVC pipes while having a straight and level track?
Eduardo Romero is offline   Reply With Quote
Old June 28th, 2011, 09:33 PM   #2
Trustee
 
Join Date: Oct 2009
Location: Mesa, AZ
Posts: 1,384
Re: Help with cobracrane dolly with multiple pvc pipes

If you're looking for straight, think of it like a train track. Use pieces of wood every few feet to lock the two PVC rails at a fixed distance from eachother. To attach to the wood, drill a hole in the top of the PVC and run a screw into the boards. Where the PVC tubes join, use a wider piece of wood so both ends of the PVC can be held together. If you cant get them to join perfectly, use packing tape instead of duct tape.
A lot of work but you'd end up with a very strong straight track that would be super smooth.
__________________
A7RII, C100, 1Dx, 5Dmk3, 70D, Kessler goodies, Adobe, Pro Tools and more!
Robert Turchick is offline   Reply With Quote
Old September 2nd, 2011, 11:19 AM   #3
Regular Crew
 
Join Date: Apr 2010
Location: Canton, MI
Posts: 95
Re: Help with cobracrane dolly with multiple pvc pipes

I had the same issues with my PVC pipe dolly when trying to join 10' sections of PVC pipe together. I use 2.250" OD pipe (schedule 40) and found a black plastic, thin wall pipe (at Home Depot) that fit the ID of the PVC with a perfect tight press fit. The black plastic pipe, I'm guessing, is for underground lawn sprinkler water supply. It's about 2" OD and Home Depot sells it in three foot sections.

I cut 12" long sections that I pressed into one end of the PVC pipes, 6" depth, and pined it in position (no glue). The pin I also found at Home Depot, just a 1/4" diameter x 3" long with a clip on both ends. I drilled through both the PVC and black plastic pipe on the center. When installed at the set location the pin is always horzontal to the ground so the dolly wheels miss it. I only had to pin one end of the black incert because you need two people push the PVC sections together and pull them appart. Some slight twisting helps this process but if the black incert moved on you the joint will fail.

Once the two lengths of PVC are pushed together the joint is seamless and the dolly wheels roll over it like glass.

Hope this helps,
Kevin O'Connor is offline   Reply With Quote
Old January 26th, 2015, 05:42 PM   #4
Major Player
 
Join Date: Dec 2009
Location: Sacramento, California
Posts: 560
Re: Help with cobracrane dolly with multiple pvc pipes

I am trying to make a seamless pvc pipe track for my dolly. I have 1.25" PVC - how do I get the right inside pipe to fit inside to keep the pipe together and the whole thing perfectly seamless?
Silas Barker is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > The Tools of DV and HD Production > Support Your Local Camera > Dolly / Track / Cable

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 03:11 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network