Edge Pro Professional Upgrades

Sadden

Sadden

Joined
Dec 19, 2011
Messages
795
Goals:
-Remove Play from EPP
-Add a serviceable brass bushing so it wears instead of the stone arm.
-Decrease Minimum angle to 0 degrees or even negative degrees.

This is going to involve significant modifications/improvements to my EPP. This is a one off deal , these will not be produced commercially.

If there is significant interest we may develop an Aluminum version of the guide for the stone arm. But for now there are no plans. Mine is being made from Titanium.

Progress is well underway. Here are some teasers.

Starting piece of Titanium






And the brass bushing


 
Interested to see your design for angle reduction to ~0 degrees. I can envision a few interesting methods, but I'm not sure it would even be an "edge pro" anymore with them. I have a feeling this will be pretty sweet :)
 
Its gonna be tough , If I don't get it this go around I will plan out future modifications to push things further. I already have version 2.0 half planned in my head.

I am lucky to be working with my friend who is a skilled machinist , the tolerances on this already are ridiculously tight.
 
I've had my EPP for about 10 years and used it rather heavily for the first 5 or 6 years. No discernible arm wear -- or none that is of any consequence. Not trying to be critical. Crap, some of the mods and tweaks can be fun to do -- even if in the end some of them don't do much for the final product (that being a sharp edge, of course).

I made an aluminum wedge to polish flats at 0 degrees. Bolts on in place of the knife guide.

IMAG0011.jpg


Mark
 
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This is amazing stuff; we built dragsters in the 60's and 70's and it involved very tight tolerance machining just as you are doing here. I liked building the front axle assemblies, they were quite challenging. That EPP looks like it could fly itself if it had some wheels on it.

I'll be following this thread, Fred
 
Hello everyone , just a brief update. Things are going well. We have almost all the pieces roughed out. So here is a mock assembly showing everything.







The mast is 2 pieces threaded together. The overall length is a couple inches longer than the stock mast , and when it gets low and hangs down too much I will be able to just thread the bottom portion off to continue to go lower and lower and lower.

We have a couple more bushings to build , and have to true everything up and bring it down to final spec.
 
This looks fantastic. :thumbup:

I have the EP Apex 4 and have been toying with the idea of reworking the entire thing to eliminate flex etc and other weak points... Maybe even create some add-on's to give it more versatility.
 
And some more work done tonight.

Softened the corners of the bottom of the horseshoe to allow the device to take steeper angles , also squared up the inside of the horseshoe , and ground the bushing flush.

Still have to put 2 bushings in between the horseshoe and either side of the guide block , then drill out the bottom of the horseshoe to accept a bushing for the mast. Then prep the mast for snap rings etc. Then obviously it needs a more permanent fixture to attach the guide block to the horseshoe.



 
Excellent questions. Those modifications are not done yet. And we will be taking some height off the horseshoe once its prepped for a bushing.
 
Hello everyone , we worked late at the shop last night bringing this project to fruition.

On top of everything else we have done , we added a bushing where the mast passes through the horseshoe , and done a whole laundry list of other things. Hidden snap rings and all kinds of fun stuff. So without further ado , I present the edge pro professional upgraded version 1.0.





Hidden Snap Ring


So how low was I able to achieve without any modifications to my blade table?
3.9x degrees. Add a stone like the Pro 30k , and I get 4.35 degrees.

This is a serious upgrade with very little play , I might change one of the bushings as I feel it was bored out slightly too much and there is a little play , but the upgrade overall has significantly less play than the original plastic piece. We wound up not taking as much off the bottom of the horseshoe as I would have liked , just to keep the stability where it needed to be , but we are already working on Other modifications that will allow me to achieve 0 degrees. Stay Tuned for a video update later on today.
 
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Interesting upgrade.

One thing I noticed is your upgrade moves the stone arm over so it's no longer centered in relation to the blade table. Shouldn't matter on the straight portion of a blade, but on the curved portion, if you use the side of the table as a guide to where you position it, the two sides of the blade will be off. (In other words, if you set the blade so the belly was just off the edge on one side, then flipped the blade around and did the same, it would be off a bit.). Hope that makes sense.

Might be something you can account for in a future update. I'm also curious if you're going to come up with anything in more accurately positioning the blade, to take advantage of your upgrades?
 
cbwx34 said:
Interesting upgrade.

One thing I noticed is your upgrade moves the stone arm over so it's no longer centered in relation to the blade table. Shouldn't matter on the straight portion of a blade, but on the curved portion, if you use the side of the table as a guide to where you position it, the two sides of the blade will be off. (In other words, if you set the blade so the belly was just off the edge on one side, then flipped the blade around and did the same, it would be off a bit.). Hope that makes sense.

Might be something you can account for in a future update. I'm also curious if you're going to come up with anything in more accurately positioning the blade, to take advantage of your upgrades?
Click to expand...

Very interesting point. I strongly suspect that you are right. I will investigate and discuss more in the video. It has an easy fix though.
Thanks :)
 
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