91mm OHO?

[Rich S]

Does Vic make a 91 or 93 mm OHO? Can't seem to find one. The larger size OHO's
are just too large for pocket carry.

Thanks
Rich

[felinevet]

No, sorry. Maybe someone could mod one?

[PTRSAK]

There was some discussion about that a while back. Syph was looking at making some damascas blades and I suggested adding a OHO loop to one as a Trial.
Being a non locking blade brings some problems in shaping the tang to allow easy opening, normal strength open rigidity for a slipjoint blade and enough closed tension to stop the blade creeping out in pocket.
I was going to try some mock-ups in mild steel but haven't got around to it.

I think there was one or two mods done with thumb studs.

[Syph007]

Ya its totally doable, but the only thing Ive done in this area is with a thumbstud.

[Etherealicer]

I know Halloween is over and the dead should rest again.

Has there any progress been made? I don't like the thumbstud but OHO 91mm (similar to the 111mm) would be shiny.

[lowtech]

you might want to check out Wengers Titanium Series - While not the most beatiful SAKs on the Planet to most, they offer OHO and added capapaility like hex wrenches, Bit holder and Titaium scales with a locked blade.

[Syph007]

Well there are other problems with a OHO 91 too.  The backspring is a bit too strong to open easily where the hole would be.  So it would have to be weakened.  Then since its not a lock blade, its not snaped open and held as firmly.  A OHO liner or frame lock 93 would be doable.  Id keep a backspring on it for retention when closed, and have a nice lock on open.  Oh boy.  Someday.

[Etherealicer]

you might want to check out Wengers Titanium Series - While not the most beatiful SAKs on the Planet to most, they offer OHO and added capapaility like hex wrenches, Bit holder and Titaium scales with a locked blade.

I have seen them, though the limited choice of tools is what keeps me from them so far.

[Etherealicer]

Well there are other problems with a OHO 91 too.  The backspring is a bit too strong to open easily where the hole would be.  So it would have to be weakened.  Then since its not a lock blade, its not snaped open and held as firmly.  A OHO liner or frame lock 93 would be doable.  Id keep a backspring on it for retention when closed, and have a nice lock on open.  Oh boy.  Someday.

Thanks for the info, would sending you some Swiss Chocolate help? Not for you, but for your significant other, so you can spend more time in your workshop 

Wait, I'm not sure I understand. Could you do a OHO liner or frame lock for a 93 or is there a 93 that has one and could be fitted into the 91 (If the second, which model would that be)?

[Syph007]

Well there are other problems with a OHO 91 too.  The backspring is a bit too strong to open easily where the hole would be.  So it would have to be weakened.  Then since its not a lock blade, its not snaped open and held as firmly.  A OHO liner or frame lock 93 would be doable.  Id keep a backspring on it for retention when closed, and have a nice lock on open.  Oh boy.  Someday.

Thanks for the info, would sending you some Swiss Chocolate help? Not for you, but for your significant other, so you can spend more time in your workshop 

Wait, I'm not sure I understand. Could you do a OHO liner or frame lock for a 93 or is there a 93 that has one and could be fitted into the 91 (If the second, which model would that be)?

I have plans to make a 93 frame lock.  Its just much easier to work on those compared to the 91s.  The problem I get into is when people ask me to do a mod I rarely turn it down, so I have a long list of customer mods to finish, before I can get time to do new prototyping.  Currently I am fitting an exacto knife holder into a 93mm alox mod.  So far so good.

[Etherealicer]

Well there are other problems with a OHO 91 too.  The backspring is a bit too strong to open easily where the hole would be.  So it would have to be weakened.  Then since its not a lock blade, its not snaped open and held as firmly.  A OHO liner or frame lock 93 would be doable.  Id keep a backspring on it for retention when closed, and have a nice lock on open.  Oh boy.  Someday.

Thanks for the info, would sending you some Swiss Chocolate help? Not for you, but for your significant other, so you can spend more time in your workshop 

Wait, I'm not sure I understand. Could you do a OHO liner or frame lock for a 93 or is there a 93 that has one and could be fitted into the 91 (If the second, which model would that be)?

I have plans to make a 93 frame lock.  Its just much easier to work on those compared to the 91s.  The problem I get into is when people ask me to do a mod I rarely turn it down, so I have a long list of customer mods to finish, before I can get time to do new prototyping.  Currently I am fitting an exacto knife holder into a 93mm alox mod.  So far so good.

But isn't the 93mm frame much more limited when it comes to tool choice, e.g. the inline Philips Screwdriver?

[enki_ck]

Well there are other problems with a OHO 91 too.  The backspring is a bit too strong to open easily where the hole would be.  So it would have to be weakened.  Then since its not a lock blade, its not snaped open and held as firmly.  A OHO liner or frame lock 93 would be doable.  Id keep a backspring on it for retention when closed, and have a nice lock on open.  Oh boy.  Someday.

Thanks for the info, would sending you some Swiss Chocolate help? Not for you, but for your significant other, so you can spend more time in your workshop 

Wait, I'm not sure I understand. Could you do a OHO liner or frame lock for a 93 or is there a 93 that has one and could be fitted into the 91 (If the second, which model would that be)?

I have plans to make a 93 frame lock.  Its just much easier to work on those compared to the 91s.  The problem I get into is when people ask me to do a mod I rarely turn it down, so I have a long list of customer mods to finish, before I can get time to do new prototyping.  Currently I am fitting an exacto knife holder into a 93mm alox mod.  So far so good.

But isn't the 93mm frame much more limited when it comes to tool choice, e.g. the inline Philips Screwdriver?

Check his signature line thread. In line phillips is a standard 93mm option for Syph007.

[Syph007]

Well there are other problems with a OHO 91 too.  The backspring is a bit too strong to open easily where the hole would be.  So it would have to be weakened.  Then since its not a lock blade, its not snaped open and held as firmly.  A OHO liner or frame lock 93 would be doable.  Id keep a backspring on it for retention when closed, and have a nice lock on open.  Oh boy.  Someday.

Thanks for the info, would sending you some Swiss Chocolate help? Not for you, but for your significant other, so you can spend more time in your workshop 

Wait, I'm not sure I understand. Could you do a OHO liner or frame lock for a 93 or is there a 93 that has one and could be fitted into the 91 (If the second, which model would that be)?

I have plans to make a 93 frame lock.  Its just much easier to work on those compared to the 91s.  The problem I get into is when people ask me to do a mod I rarely turn it down, so I have a long list of customer mods to finish, before I can get time to do new prototyping.  Currently I am fitting an exacto knife holder into a 93mm alox mod.  So far so good.

But isn't the 93mm frame much more limited when it comes to tool choice, e.g. the inline Philips Screwdriver?

Ya its exactly the opposite.  The 91mm tools are very specific to the pivot and spring used.  The 93 is almost generic where all pivots are the same shape.  It makes it very easy to mix and match tools.

[PTRSAK]

Well there are other problems with a OHO 91 too.  The backspring is a bit too strong to open easily where the hole would be.  So it would have to be weakened.  Then since its not a lock blade, its not snaped open and held as firmly.

This is the "problem" that I think can be solved by recontouring the closed side of the tang so the closing snap is much reduced. Think of rounding off the inner corner so that as the blade is opened it doesn't have to push the backspring up so much. In fact it could almost be made into a radius around the pivot and rely on friction to hold closed.
This would still allow for the full strength of the spring to hold the blade in the open position.

I was going to play around with some mockups but I guess I could be a geek and do it in Inventor.

[lowtech]

I know, it is a Thumbstud again, but I like the execution of this mod.
The picture is from the Interwebs, probably from SOSAK or SAKWiki, but I can´t remember who posted it.

[ducttapetech]

Looks like a Scibeer mod. I am not sure. It was on Sosak.

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