Jump to content
JRammit

Anyone make trolling divers?

Recommended Posts

Just took our new boat out for the 2nd time today:).. Still getting use to having the entire lake within my reach, and targeting new species... sand bass (aka white bass) and hybrids (white bass + striped bass), these fish are no strangers to deep water and are right at home in open water,  where i am not

Trolling is something I've done verry little of in the past, but will be doing alot more of going forward.... So im gonna take on an interesting project, one i havnt seen here before... trolling divers

For anyone not farmiliar, a diver is basically a crank bait that doesnt swim, its only job is to get your bait, which trails behind it, down to a specified depth.... the most popular commercial diver is probably the 'Jet Diver', which ill attatch a picture of... but there are a few other types on the market.... and via internet search, ive found vague descriptions of a homebrew type of diver made from PVC pipe

I suppose i could just try to copy the jet diver, or pittle around with pipe until i get it right.. but first i thought id tap into the vast knowlege and ambition this site is known for

 

 

20190902_155150.jpg

Share this post


Link to post
Share on other sites

This looks like a fairly easy design to emulate... i like how it has a built in trip capability, in that the tow point slides down the sloped wire when weight from a fish on the trailing end levels out the diving surface... then you're fighting the fish, not the diver

I think this is where I'll start... with a sheet of lexan, a clothes hanger and a barrel wight, i should be able to get close

20190903_075213.jpg

Share this post


Link to post
Share on other sites

I like the tube idea, I think it would work without adding weight. Very easy to make too. There would be optimum dimensions for maximum dive, so trial and error would be required.

Dave

Edited by Vodkaman

Share this post


Link to post
Share on other sites

I was hoping to get your opinion Dave:rolleyes:

So this is the only illustration i could find in my searching... i had imagined something longer and of smaller diameter

One down side to the tube may be lack of a "trip" device (explained above).. although it may be possible to incorporate in the tube design

20190903_094622.jpg

Share this post


Link to post
Share on other sites

Maybe the looping line at the tow point works as a trip mechanism.. unsure, wasn't alot in the way of the description 

Share this post


Link to post
Share on other sites

This is what I had in my mind for the PVC tube. Of course I must add a disclaimer as this is pure theory.

The idea is to scoop up water and drive it upwards, providing a jet effect to drive the tube downwards.

There will still be vortex shedding, so a low pressure will exist underneath the tube, drawing the tube down.

The lip(s) trimmed half way around the pipe should soften the vortex effect and subsequent movement.

The top/rear lip protects the jet from the vortices formed around the pipe. Also, balances the pressure on the front lip and thus controls the dive angle.

Adjustments - this is basically eyeballed, so the geometry; body length, front lip length, rear lip length, eye positions may have to be moved around for optimum.

Ballast eye - I don't think a ballast leader will be necessary, but I have included it in case of unforeseen stability problems.

The pipe I have in my hand is 21.5mm OD with 2mm wall thickness. I have designed the length 75mm with lips 25mm.

Any thoughts?

Dave335641845_ISO1text.thumb.jpg.2f8794855525d0cc44280893779cde51.jpg

Edited by Vodkaman
  • Like 1

Share this post


Link to post
Share on other sites

I like that.. 21.5 mm is less than 1", might could be upsized to 1".... then for an experiment,  i could run one with only the front end cut against one with both ends like yours

Only thing missing is a trip device.. maybe i could just mimic the towing wire from the other design above and mount it to the pipe

Share this post


Link to post
Share on other sites

I don't know about the trip thing, but the tow point will be a critical factor in the dive function.

I will model something up in 25mm (1") and see how it looks.

Dave

Share this post


Link to post
Share on other sites

I also wonder if the tow point will need to be farther down the cut part, similar to a deep diving crankbait having tow point on the lip instead of the body.... good thing about PVC, its cheap, so expiriments will not be costly

Share this post


Link to post
Share on other sites

I would say not, but like you say, the materials are cheap and this is a very simple part to make. I would certainly go to the water's edge with several configs, including your idea.

DaveSIDE.thumb.JPG.6cd470a84a57f1f97238fd2097921cb2.JPG

  • Like 1

Share this post


Link to post
Share on other sites

I would say make at least two more with lip lengths 25mm and 20mm plus what ever you want to try, and give me some feedback. Try with and without a ballast weight.

We all have a 'feel' for the power of the lip on a crank, but there is no 'feel' precedence for something like this.

Dave

Edited by Vodkaman

Share this post


Link to post
Share on other sites

Definitely be making several designs... i also want to try a lexan oval shape in the design i posted above... tomorrow is my friday, then ill have a couple days in the shop for building, but testing unfortunately will have to wait a week

Share this post


Link to post
Share on other sites

Heres my first go at it

2 1/4" long x 2" wide, 1/8" thick lexan, 3/4 oz sinker

Pool test went well.... tried 4 different tow points and ended up using the hole 1" from the front edge, any further back and the contraption wiggles like a crankbait, i figure thats wasted energy that would take away from the max diving depth.... only have a few feet of water in the pool since we're getting it ready for winter, so to test the diver i cast it across the pool, let it sink to the bottom,  and then see if i can lift it off the bottom by lifting the rod instead of reeling..... no dice... the thing hugs the bottom and comes back to me no matter how hard i tug at it

The real test will be my next trip to the lake... not sure when that'll be, sooner than later if i can help it

20191014_170601.jpg

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

×
×
  • Create New...
Top