Replies to This Discussion

Permalink Reply by Bryan OShaughnessy on January 4, 2016 at 23:03

I haven't heard of the Paragon mod.  Can you fill me in?

Permalink Reply by greg weber on January 5, 2016 at 16:19

cold stell makes a knife that is quite large and sturdy that looks like butterfly knife, only it isn't, it has to be opened like any slip joint knife, if you take the knife apart and round off the corners of the blade at the bottom of the knife, when put back together it will operate like a balisong, with no handle lock,

if you google cold steel paragon mod you can see some you tube videos. i've tried to do the mod with hand files and i need to either buy a grinder or get someone else to do it.

greg

In MemoriamPermalink Reply by D ale on January 5, 2016 at 17:26

Can you post a pic, Greg .. of the current state of affairs.

Permalink Reply by greg weber on January 7, 2016 at 22:55

this is a picture of the knife all apart, (because i can't get put back together) partly incompetence, partly arthritis.

In MemoriamPermalink Reply by D ale on January 8, 2016 at 4:30

OK .. so all the parts are there .. right ?!?

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Reason I ask .. I could possibly help.

Just .. would NOT take it on if too bungled.

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No disrespect meant ..just.. could not / would not take it on if bungled badly & parts missing.

Wouldn't be best for either of us.

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PM me w/ EXACTLY what you're looking for.

As far as references go ... take a look around this group at a few of the Mods I've done.

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D ale

Permalink Reply by greg weber on January 8, 2016 at 23:04

yep, all the parts are there and i did some file work to start rounding the edges and quit when i realized i probably would mess it up. i did send you a request for a pm

In MemoriamPermalink Reply by D ale on January 9, 2016 at 3:53

Sounds good , Greg.

Let's see what we can do here.

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NOTE: I have zero knowledge of your desired modification. That will require a little research on my end. Perhaps .. you could point me toward an appropriate description.

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I have , however, built 2 balisong or butterfly knives for my son .. he likes 'em.

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As long as all parts are present ..AND.. I get a decent idea of exactly what the desired mod is .. .. .. .. We'll see.

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At the very least .. I can certainly get it back together for you.

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Dale

In MemoriamPermalink Reply by D ale on January 9, 2016 at 4:37

Ok .. so I'm reviewing this one .. youtube video .
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It appears .. the original unmodified unit is already a "sorta kinda" balisong ........just........ fabricated such that opening & closing is inhibited by both ... A). built in backsprings in each handle half ..and.. B). an eccentric cam built into the blade itself.

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From what I've seen thus far .. the eccentric cam is modified (lift reduced) such that opening requires less effort .. result being .. action more like a std balisong.

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If you've a better video or explanation than the link I provided .. please clue me in .. i.e. post a link here.

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Thanks,

Dale

In MemoriamPermalink Reply by D ale on January 26, 2016 at 18:42

I've agreed to help Greg.

After some initial PMing back & forth .. Greg shipped and I have received the dis-assembled knife.

At a bare minimum .. I will re-assemble.

More likely .. I will perform the desired modification ..then.. re-assemble & return to Greg.

This is simply a public acknowledgement that I've agreed to do this & that the package has been received.

Thanks, Greg .. for packaging as I suggested. That being.. like parts individually bagged ..& then.. all of that bagged in a single larger bag. I am confident everything you packed successfully made it. I'll start tonight by simply laying everything out .. possibly assembling .. getting an idea of what needs to be accomplished. The bulk of the work will be this week-end.

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Thank you .. for trusting me with this. I'll shoot for as quick a turn around time as "life" allows. I'll try to post some pics along the way. Will most certainly post a pic of the assembled unit before returning it.

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Dale.

Permalink Reply by Jan Carter on January 26, 2016 at 20:43

I am very interested to see how this works out for both of you.  Not only Greg getting his knife back and all together but the Challenge of doing the mod for Dale!  I have no doubts everyone is going to have some fun and end up with a great knife!

Permalink Reply by greg weber on January 26, 2016 at 22:25

I'm always amazed when I go through my desk drawer and shoe boxes of stuff, what I find, my knife working abilities are limited to changing what direction the clip goes on a tactical knife, and I've even screwed that up a time or to, so my hat's of to anyone more mechanically able than me.

i used to tow a trailer behind my trike just to carry tons of tools, when i stopped to help someone i always told them help themselves to the tools but don't let me touch anything or they end up towing both our bikes. actually bought a 'spot' satellite rescue device so i could get towed when i broke down out in the desert or up in the rockies. best "tool" i ever bought.

In MemoriamPermalink Reply by D ale on January 26, 2016 at 22:55

Greg .. there exists a cam action that currently retains the knife blade in either the open or closed position. The cam lobe is part of the blade itself. The back spring performs as the cam follower.

Note: I've identified one of the cam lobes .. 2 identical cam lobes exist .. one on either side of the blade. The same is true for the cam follower. I've only identified the one ..but.. 2 exist i.e. the 2 backsprings.

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Parts ID .. so we're both on the same page.

In the closed position .. the lift of the cam lobe must be overcome before the blade will open.

As the blade is opened .. the "lift .or. rise" of the cam lobe must act against the force applied by the cam follower ..backspring.. to facilitate opening. This simultaneously increases the force which the cam follower applies to the cam itself .. as the cam follower is forced further from the center of rotation.

As the blade further opens.. the cam follower is forced even further away from the center of rotation .. causing an even larger force to be applied to the cam from the cam follower.

As the blade is even further opened .. the cam lobe continues to have the cam follower forced away from the center of rotation. This .. in effect .. maintains an increased force applied by the cam follower to the cam itself.

In the fully opened position .. the cam follower s allowed closer to the center of rotation. While the actual force applied by the cam follower is now lower .. there still exists enough to hold the blade in the open position.

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The key to your desired modification is to reduce both the lift of the cam and the rate of lift of the cam .. while still retaining enough force to hold the blade in either the open .or. closed position. The initial rate of lift is dramatic .. keeping the blade securely closed. i.e. a significant force must be applied by the user to overcome this dramatic "rate of lift" to open the blade. Once opened past the 3/4 open position .. the cam lift is on its way down ..&.. I would expect the knife to almost snap into the open position. Both the remaining pressure applied by the cam follower ..&.. the user grasping & holding the 2 halves of the handle together keep the blade open.

Adjusting (reducing) the dramatic "rate of lift" at the opening side of the cam will reduce the force required open the blade. However .. enough lift will still need to be retained to safely keep the blade closed.

I will adjust the reduce the abrupt & dramatic "rate of lift" on the opening side of the cam lobe to achieve the desired modification. Of course .. I will then polish the resultant cam surface & the mating area of the cam follower (backspring) to assure smooth operation.

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Dale

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