[PSUBS-MAILIST] Bunk Trailer

Sun Mar 25 15:41:45 EDT 2018

 Jon, I agree, if your alone especially, accurate loading in wind etc might be tough.  You could do like I did and have upright posts to guide the sub on.  Most boats use that system.  I would defiantly cut that span down with a cross member.  An additional cross member will also distribute the load better to the main trailer frame.  Our subs are short and heavy compared to a boat that may be as heavy but much longer.Hank
    On Sunday, March 25, 2018, 1:35:33 PM MDT, Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

 The 600 has rollers lengthwise along the bottom of the battery pod, about 54 inches worth I believe.  I could go the channel route, but no, I am hoping the bunks will cradle the hull and be high enough to allow the batter pods to dangle underneath.  So essentially, I'm saying the submarine will be supported by the bunks and the battery pods will not carry any weight.  My calculations show the two 3x12 bunks should easily support the weight of a dive ready 600, about 4500 pounds.  Bunk span is 8 feet as is, however I could add a crossbeam to support the bunks in the middle and have only 4 foot span between supports.
I really have no preference and could easily attach some 4 inch channel to the crossbeams so the battery pods could hold the weight of the sub, but I have a suspicion that the bunks would allow easier loading because with the channel the sub pods would have to be guided pretty accurately over them to sit correctly.
Jon

      From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
 To: Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> 
 Sent: Sunday, March 25, 2018 3:22 PM
 Subject: Re: [PSUBS-MAILIST] Bunk Trailer

 Jon,Your 26 foot trailer is perfect given your light truck.  I removed the bunks, because Gamma sits on the flat battery box that protrudes under the hull.  I had to add an extra crossmember to the trailer to support the weight.  I have a 2 by 12 plank on the cross members for Gamma to sit on.  Wood is good so the sub doesn't slide as easy and I needed the 1.5 inch lift to get the sub above the axels.  I assume you will weld some brackets and channel to the trailer frame for your rollers under the battery pods.  Do  you have rollers under?  If not, I would put two at the front end of the pods, I put one at the front and it is a dream.  The sub comes onto the trailer sitting level, while the trailer is on an angle.  There is no need for rollers at the back, and the front rollers don't need to be below the pods because of the angle of attack, then they don't interfere with the sub sitting on the floor.Hank
    On Sunday, March 25, 2018, 12:38:19 PM MDT, Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

Already got it and it's a 26 footer as well, I will have to learn to drive slower.  I've got a Toyota Tacoma and the 6000 GVW will be at the Tacoma's max pulling limit so I am sure I will not forget it will be behind me.  :) :)
I looked at Gamma on your trailer but noticed it's not cradled by bunks, I don't think.  You have removed the bunks and it sits on some...I don't know...channels?  Did you try cradling the hull by wooden bunks?
Jon

      From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
 To: Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> 
 Sent: Sunday, March 25, 2018 11:04 AM
 Subject: Re: [PSUBS-MAILIST] Bunk Trailer

 Jon,Gamma rides on a 26 foot bunk style boat railer.  That style of trailer is the lowest for shallow launches .  Also buy the longest trailer you can handle, not just for easy launching but for safe towing.  Gamma is 6,000 lbs and I tow it and forget it is behind me.   Nothing worse than the trailer whipping around because it is to short.  Well okay hitting your  shin on your trailer hitch might be worse ;-)Hank
    On Sunday, March 25, 2018, 7:21:25 AM MDT, Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> wrote:  

Anybody tried a bunk style boat trailer with a K-SUB?   Seems most everyone is using a flat-bed style trailer but it seems like bunks could be positioned to have the sub come up quite nicely.  I'm curious about drag though it doesn't seem like the bunks on epoxy painted metal would be any worse than a fiberglas hull.
Jon
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