Ok I bought it but can't attach it. KakBritva Wide Central Clamp Adapter for Hapstone R2

Question

NYCJay

Ok I bought it but can't attach it. KakBritva Wide Central Clamp Adapter for Hapstone R2

It came with 2 shorter thicker bolts (each with 1 large washer) and 2 half-threaded longer thinner bolts (each with 2 smaller washers and 1 nut). Only the thinner bolts will fit through the slot in the R2 clamp holder bar so I assume you have to use those and have no clue why there are 2 shorter thicker bolts as there are only 2 holes you can use on the Kakbritva wide clamp and the gearconnect adaptor.Ok so when you use the longer bolts that actually fit in the R2 clamp holder slot, they don't poke through at all for the nut to secure the setup. If I don't use any washers at all (which looks like the bolt head would damage the back of R2 clamp slot), then the bolt comes through enough to thread the nut on by maybe 1 thread.Now if I were to take the Kakbritva clamp bar off and just use the two gearconnect bolts to hold everything together, I would probably be able to use the washers but then it would be 5/8th inch shorter than the R2 universal angled clamps.There aren't any instructions or pictures in the box and I couldn't find anything about it online.Unless I'm just thinking about this wrong, there is no way to use this adapter with the R2 stock clamps.Any ideas? I have pictures but can't see any way of uploading them here.

Question ID: 4741270 Status: Open Dec 06, 2023 - 06:41 AM

Comments (0) | New Comment

Do you have the same question? Follow this Question

Answer this question

1answer

Answer

⚙️Leading Edge

Dec 06, 2023 - 10:15 AM

You only need to use the thinner bolts and their respective washers and nuts. The thicker bolts and large washers are normally supplied by default together with the KakBritva Central Wide Split clamp and are only used if you were to install it on a KakBritva sharpener. I assume the thicker bolts were supplied together with your KakBritva Central Wide Slit clamp?

Just to confirm, this adapter is designed to be used with the clamp listed below-

https://www.gritomatic.com/products/w...

If you have the correct clamp (as listed above), and it still wont work with the bolts supplied, then Gritomatic might have sent you the wrong length bolts.

0

Comments (14) | New Comment

By

NYCJay

on 12/6/2023 11:35:53 AM | Like (0)

Yes that's the clamp, though I got mine in the WSPA upgrade kit a few years ago. The thicker bolts came with the gearconnect adapter along with the thinner bolts, but I think you're right that they are probably another set of the original bolts. I guess they sent me the wrong bolts that are around 1/4 inch too short. I'll try sending them an email, but I haven't had much luck getting responses from gritomatic.

By

NYCJay

on 12/12/2023 7:35:58 PM | Like (0)

Well, no response to my email or follow up email after a week. I included pictures showing that out can't work with the supplied bolts. I even tried again today to make sure but no joy. With no customer support response there's no choice but to request a return before my return window closes. That's too bad. I would have liked to repurpose that wide central clamp.

By

⚙️Leading Edge

on 12/12/2023 7:51:10 PM | Like (0)

See if you can get hold of them via phone, they might be very busy with the Christmas season approaching fast.

+1 470-227-7960

By

NYCJay

on 12/12/2023 8:58:58 PM | Like (0)

Now that I'm looking at the product page picture again I can see that my great connect adapter doesn't have the recessed slot for the Kakbritva clamp bar to fit in to. Mine is totally flat on the clamp side. Maybe they changed the adaptor design without compensating with longer bolts.

By

⚙️Leading Edge

on 12/12/2023 10:39:59 PM | Like (0)

What's the length of your bolts, as a matter of interest?

By

NYCJay

on 12/13/2023 3:59:04 AM | Like (0)

The bolt is 49.8mm long. The adaptor is 20mm with recessed section that the R2 clamp bar sits in, 22mm full thickness. The bolt needs to be at least 55mm long to work.

By

⚙️Leading Edge

on 12/13/2023 8:55:55 AM | Like (0)

I just assembled and checked my R2 bar with my adapter and Kakbritva wide central clamp and mine works perfectly fine with the same length bolts as yours. I'm fact, I even tried a 45mm bolt and it still works just fine. My Gearconnect adapter measures exactly the same as yours. For reference, my R2 bar is 6mm thick and the block that is attached to my Kakbritva wide central clamp is 15.4mm wide. Is your R2 bar or your Kakbritva block the same thickness?

By

NYCJay

on 12/13/2023 9:16:07 AM | Like (0)

Kakbritva clamp block is 15.5mm and my R2 slotted clamp bar is 8.2

By

NYCJay

on 12/13/2023 9:24:27 AM | Like (0)

My bolt measurements were total length by the way. I guess it would be more informative to give the bolt shaft length without the head which is 44.85mm

By

⚙️Leading Edge

on 12/13/2023 9:37:47 AM | Like (0)

Ah, that makes sense now. Seems like they made the R2 bar a little thicker so you will need bolts that are 5mm longer.

Did you try using the thicker bolts that Gritomatic supplied with your new generation R2 bar? I think they might have taken that into consideration and maybe they work with the new bar and your adapter?

By

NYCJay

on 12/13/2023 9:40:48 AM | Like (0)

So 8.2+20+15.5 is 43.7mm total thickness of components which leaves 1.15mm worth of protruding threads for the nut IF I leave both washers off. I've tried it but the nut gets less than 1 turn. I think it would strip the bolt in no time flat.

By

NYCJay

on 12/13/2023 9:46:56 AM | Like (0)

"Did you try using the thicker bolts that Gritomatic supplied with your new generation R2 bar? I think they might have taken that into consideration and maybe they work with the new bar and your adapter?"

Yeah I tried. They are too thick to fit through the R2 clamp slot. I even tried threading them through but it was crushing the threads and scratching up the R2.

By

⚙️Leading Edge

on 12/13/2023 10:01:49 AM | Like (0)

It clearly seems like Hapstone has a new bar design, so your only option will be slightly longer bolts. I'm guessing that Gritomatic was never informed about the new bar design by Hapstone, and they likely do not know about it.

I would visit the local hardware store if I were you and just get 2 compatible bolts, nuts and washers. That's probably going to be the quickest and easiest solution. Take the bar and adapter along with you to see what works. It should be pretty cheap and easy fix.

By

NYCJay

on 12/13/2023 11:38:36 AM | Like (0)

Yeah, but I live in Queens NYC where most people don't own cars and the nearest Home Depot is a 30 minute walk or half the price of the adapter in bus fair. I'll try calling them and see what they'll do about it I guess, but I doubt they have bolts just laying around. We'll see.

Add New Comment

Answer this question

View More Product Details

KakBritva Wide Central Clamp Adapter for Hapstone R2

The product page is in development. Stay tuned.Attention! GearConnect adapters use 4 mm hex sockets, no tools included. All adapters are sold in singles, never in pairs. GEARCONNECT is the family of clamp adapters to build "cross-platform" sharpening systems. An adapter connects the clamp ... See More

View Details

View all KakBritva Wide Central Clamp Adapter for Hapstone R2 Questions & Answers

Share Your Own Experience & Expertise

We look to ensure that every question is answered by the best people with relevant expertise and experience, the best answers include multiple perspectives. Do you have relevant expertise or experience to contribute your answer to any of these commonly asked questions?

Yes that's the clamp, though I got mine in the WSPA upgrade kit a few years ago. The thicker bolts came with the gearconnect adapter along with the thinner bolts, but I think you're right that they are probably another set of the original bolts. I guess they sent me the wrong bolts that are around 1/4 inch too short. I'll try sending them an email, but I haven't had much luck getting responses from gritomatic.
Well, no response to my email or follow up email after a week. I included pictures showing that out can't work with the supplied bolts. I even tried again today to make sure but no joy. With no customer support response there's no choice but to request a return before my return window closes. That's too bad. I would have liked to repurpose that wide central clamp.
See if you can get hold of them via phone, they might be very busy with the Christmas season approaching fast.

+1 470-227-7960
Now that I'm looking at the product page picture again I can see that my great connect adapter doesn't have the recessed slot for the Kakbritva clamp bar to fit in to. Mine is totally flat on the clamp side. Maybe they changed the adaptor design without compensating with longer bolts.
The bolt is 49.8mm long. The adaptor is 20mm with recessed section that the R2 clamp bar sits in, 22mm full thickness. The bolt needs to be at least 55mm long to work.
I just assembled and checked my R2 bar with my adapter and Kakbritva wide central clamp and mine works perfectly fine with the same length bolts as yours. I'm fact, I even tried a 45mm bolt and it still works just fine. My Gearconnect adapter measures exactly the same as yours. For reference, my R2 bar is 6mm thick and the block that is attached to my Kakbritva wide central clamp is 15.4mm wide. Is your R2 bar or your Kakbritva block the same thickness?
Kakbritva clamp block is 15.5mm and my R2 slotted clamp bar is 8.2
My bolt measurements were total length by the way. I guess it would be more informative to give the bolt shaft length without the head which is 44.85mm
Ah, that makes sense now. Seems like they made the R2 bar a little thicker so you will need bolts that are 5mm longer.

Did you try using the thicker bolts that Gritomatic supplied with your new generation R2 bar? I think they might have taken that into consideration and maybe they work with the new bar and your adapter?
So 8.2+20+15.5 is 43.7mm total thickness of components which leaves 1.15mm worth of protruding threads for the nut IF I leave both washers off. I've tried it but the nut gets less than 1 turn. I think it would strip the bolt in no time flat.
"Did you try using the thicker bolts that Gritomatic supplied with your new generation R2 bar? I think they might have taken that into consideration and maybe they work with the new bar and your adapter?"

Yeah I tried. They are too thick to fit through the R2 clamp slot. I even tried threading them through but it was crushing the threads and scratching up the R2.
It clearly seems like Hapstone has a new bar design, so your only option will be slightly longer bolts. I'm guessing that Gritomatic was never informed about the new bar design by Hapstone, and they likely do not know about it.

I would visit the local hardware store if I were you and just get 2 compatible bolts, nuts and washers. That's probably going to be the quickest and easiest solution. Take the bar and adapter along with you to see what works. It should be pretty cheap and easy fix.
Yeah, but I live in Queens NYC where most people don't own cars and the nearest Home Depot is a 30 minute walk or half the price of the adapter in bus fair. I'll try calling them and see what they'll do about it I guess, but I doubt they have bolts just laying around. We'll see.

Ok I bought it but can't attach it. KakBritva Wide Central Clamp Adapter for Hapstone R2

1answer

Answer

View More Product Details

Share Your Own Experience & Expertise

Related Product

Browse by Product

Browse by Topic

Recently Active Members

Tools