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To: tjustice@th*.ne*
From: sirving@ne*.co* (Irving, Steve)
Subject: tekna's
Cc: techdiver@terra.net
Date: Sat, 17 Feb 1996 06:54:56 -0500
 Terrence Justice  asks:
1. Is there enough similarity between the old Tekna and the new Oceanic DPV
   to allow for a retrofit of the Tekna?  In other words, could the 
   Oceanic removable cowling be SAFELY installed on the Tekna somehow?
   (It appears that the mold and the attachment screw form factors are
   the same.)  Has anyone tried to do this or contacted Oceanic about it?

The lower section of the DV-3X and the DV-100(Tekna)/Mako (Oceanic) are
identical and can be switched.  The inner bulkhead, which in the 3X is just
a plastic rib that separates the motor compartment from the batteries,  is
not transferable to the Mako.  The Mako utilizes a new bulkhead, which is
also the spacer that gives the Mako a longer overall length.  It is this
length that also gives the Mako superior buoyancy characteristics.
Continuing with the differences we find that the 3 supporting ribs that
encircle the batteries, the battery holding assembly, and the top cover or
cowling, are all different than that found on the 3X.  If Oceanic will sell
you the parts necessary to change it over, you will have a better scooter.
Depending on the amount of money you spent on the 3X, it may not seem a
reasonable option.

2. Is it practical to simply remove the cowling on the Tekna each time
   you want to charge it?  (Doesn't seem like it, but I thought I'd ask.)

If you have not already done so, you will find 1 large O ring separating the
main body. 6 smaller O rings on the screws that will need to be removed.
And another 6 O rings that sit a top the last rib, and compress when the
screws are tightened.  That's 13 O rings total that will have to be
maintained each time the scooter is disassembled.  Not practical.  Not to
mention that many 3X's will develop stress cracks along the 6 holes from
over tightening.  

3. Are there certain conditions or procedures that lead to the possible
   explosion that can be avoided?  Are these things safe to use and charge
   as originally designed?  (IOW, is it BS that they blow up?!)

Tough question.  I've never had one blow on me, but I may have just been
lucky.  When charging the scooter make sure you give it time to vent after
discharging.  Leave the port plug off for a while.  Don't ask me how long.
Always plug the charger into the scooter first.  Never plug the charger into
the wall, have it turned on, and then plug into the scooter. After charging
the scooter, give it time to vent. How long?  Who knows.  After charging,
never hit the trigger until the scooter has a good time to vent. 

4. Are there retrofits or third-party vendors that will upgrade, update, 
   or sell the required parts to do so?

Not to my knowledge, but  Barry Miller can do all the work if you get him
the parts.  He can be reached at bmiller@fr*.fs*.ed*
Good luck

~~
Steve

"Giving money and power to government is like giving whiskey and car keys
 to teen age boys." --   P. J. O'Rourke
                                    
                                                                            
                                

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