[PSUBS-MAILIST] trackdrive

[hank pronk via Personal_Submersibles]

Alan,
The battery draw is a function of both speed and weight you are carrying.   Remember a scooter is 400 lbs with driver.  Also tracks take a lot of power to turn, especially a rubber track, without any weight.  Then think of the power it would take to climb the ramps.  Believe me, I wanted to try this, I was going to borrow tracks off one of my excavators.  It is simply more trouble than benefit. 
Hank 


On Thursday, July 24, 2014 8:27:55 AM, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
  


Hi Hank,
I was thinking of the rubber tracks. Maybe rollers running round the battery pod
with the drive wheel on top. would it be that heavy on the battery if you only spent 10 minutes going from the trailer to the water & back again ? If you think of mobility scooters; they have a 
range of 30 miles on a 55 ah battery.
would be cool to be able to beach launch a sub.
Alan


Sent from my iPad

On 24/07/2014, at 11:51 pm, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:


Alan,
>The fellow that helps me test and dive my subs is a huge fan of tracks on a sub.  We debate this for hrs after a big struggle at a lake trying to launch.  This idea would be the ultimate system.  The problem is, if it were electric, the power consumption would be huge and put a big drain on your batteries.  I figured the only way to do it would be with a gas motor hyd power pack.  Hook up the quick connectors to launch, then disconnect.  The next problem is, tracks, even rubber, are very heavy. The setup could weigh 1,000 lb easily if it is carrying a sub.  Then there is the cost, think big!  :-)    It would be the ultimate though!
>Hank
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