Author Topic: BNM Bolt Probe Problems? (Read 22366 times))

ACZan · « **Reply #40 on:** May 02, 2018, 07:26:34 PM »

Bob,

I think you summed it up perfectly. Thanks again for splitting this topic out from my chamber-leade topic. Both are hot items, I see. Both have appeared to have gotten a couple thousand views in a few days.

I am a consumer advocate and will confront merchants and manufacturers on their failure to deliver. Certainly have some interesting stories to tell. This is an important perspective on things like this. Very few people will want to waste their time to address issues with a business. Those businesses greedy to make money on their half-arse work, hope you never contact them. Unfortunately, I have wasted hundreds hours fighting with big corporations such as HP and TWC/Spectrum trying to correct stupid mistakes they make and their outright defiance of laws to make the almighty dollar. Most other people just don't care enough to confront them. So, I am at odds with this philosophy being a man of principle to do things right for myself and others. Enough said on that.

But, Bob is right. And here is why. I did a little bit of searching on the web for additional information on two topics, this being one and another. Would you know, one or two words was enough to bring those topics up near the top of a Google search results page. This is almost the equivalent of boycotting a company.

If Sergio makes parts for the aerospace industry, then maybe I need to know in what planes/jets those parts are used. Sorry, but that is the first thing I saw when I looked at the word "aerospace" in the web site address.

I will attempt to do things the right way and have a new bolt made. Glad Pecor included the quote mentioning the handle. Might have that replaced too, while I am at it. Handle isn't a big deal to replace.

ACZan · « **Reply #41 on:** May 02, 2018, 07:36:22 PM »

Are we all in an agreement that this issue has affected side and rear bolt versions of that breech?

Checked my inbox, still don't see any thing from BNM Custom. Guess I have to use that contact from Pecor. I could call from where I work (US Air Force base). Might freak him out if I only start the conversation with 'defective parts' and he sees USAF on caller ID. Sorry, guys. Couldn't help the humorous imagery there.

But, whewee!!! Lothar-Walther in GA is quick. They already have new barrel blank on its way to me.

pecor · « **Reply #42 on:** May 02, 2018, 07:39:29 PM »

Watch the news Airplane motors are self destructing on a regular basis Window are being blow out or as of today Just failing in flight, And we wonder Why!! Companies like His are to Blame!!

rsterne · « **Reply #43 on:** May 02, 2018, 07:41:20 PM »

Jay, we are not supposed to bash people or companies on the GTA.... Making people aware of a problem is one thing, but I would be careful with your comments or the Mods will be all over you.... JMO....

Bob

miksatx · « **Reply #44 on:** May 02, 2018, 07:53:27 PM »

Quote from: pecor on May 02, 2018, 06:19:11 PM

Sorry Boss but you have it wrong, All Lw barrels are stamped at the Breech Not the Muzzle, So your barrel is in fact Not choked at the muzzle as it should be!! Push a pellet through where is your choke, I Bet it's not at the Muzzle like it should be. Unless you sent them a crosman LW barrel witch are Not marked.

Wouldn't want to take your money. I checked for the choke when I got the breech and barrel back from Sergio the second time. Not going to assembly a rifle if things aren't right.

pecor · « **Reply #45 on:** May 02, 2018, 08:03:00 PM »

Quote from: rsterne on May 02, 2018, 07:41:20 PM

Jay, we are not supposed to bash people or companies on the GTA.... Making people aware of a problem is one thing, but I would be careful with your comments or the Mods will be all over you.... JMO....

Bob

I understand Bob but this Gentleman's Company {BNM Custom} IS Not A Forum Sponsor! And Buyers have a right To Know, Before plopping down their Hard Earned cash, And I would think a Moderator would Agree

ACZan · « **Reply #46 on:** May 02, 2018, 08:08:26 PM »

Sorry, Guys.

I kind of provoked Pecor on that one. I need to take some blame for that.

However, I understand his frustration from a number of posts ago. He is right we should be enjoying the fruits of our custom modifications. I'm biting my fingers and doing my best to state facts.

I just sent a message to him from his MNB Aerospace website. It should get his attention if not alarm him. Just Pecor mentioning his alternate contact is enough to set a fire under a business. Searches with certain key words can have tremendous impact.

miksatx · « **Reply #47 on:** May 02, 2018, 08:25:56 PM »

Ok looks like I got the fact about the C wrong. I just pulled the barrel indeed the breech end has a C and 4.5 But that don't change the fact it was backwards the first time lol. He fixed it so no problem. Now the probe problem l brought it to his attention with pics. I thought maybe he might fix the problem. I just recently bought the silver breech in the pics and found it has the same problem.

Mudbugmitch · « **Reply #48 on:** May 02, 2018, 09:04:15 PM »

Well, &^^&....Just got mine in today. Installed it on my Maximus, looks great, but lost 50 fps. I am not taking it apart just yet. I will be watching this topic to see where it goes. If I had only waited a week or two..... Figures!

pecor · « **Reply #49 on:** May 02, 2018, 09:30:47 PM »

ACZan Your all Good, I went Rounds with this BNM Custom's, Fellow 2 years ago with another problem of poor parts fit. PayPal sided with Me

I However Sent his Items back Anyway! With a Nasty Letter about his Machining Practices and Tolerances, And Now we have More Problems again!! Sergio Just don't get IT!!

Kmaz · « **Reply #50 on:** May 02, 2018, 09:49:41 PM »

We definitely haven't confirmed it is affecting both rear and side bolt models. When I first saw the posted photos I was seriously concerned. At first glance, everything in the photos (breech wise) looked identical to mine. I ended up removing it and cycled a pellet (crosman premier) and it completely clears the tp. Yours is definitely unacceptable. You deserve to have yours made right. For the moment, I will defend the company. I will state this again because I can only go by what I have before me and what it's mounted on. Crosman 22xx with a crosman factory lothar walther barrel.
Kris

Kmaz · « **Reply #51 on:** May 02, 2018, 09:53:13 PM »

Quote from: Mudbugmitch on May 02, 2018, 09:04:15 PM

Well, &^^&....Just got mine in today. Installed it on my Maximus, looks great, but lost 50 fps. I am not taking it apart just yet. I will be watching this topic to see where it goes. If I had only waited a week or two..... Figures!

Mine was down on fps as well. I found that the bnm transfer port while nicely machined, wasn't long enough. Used the ice maker tubing trick.
Kris

Kmaz · « **Reply #52 on:** May 02, 2018, 10:25:08 PM »

Quote from: pecor on May 02, 2018, 09:30:47 PM

ACZan Your all Good, I went Rounds with this BNM Custom's, Fellow 2 years ago with another problem of poor parts fit. PayPal sided with Me I However Sent his Items back Anyway! With a Nasty Letter about his Machining Practices and Tolerances, And Now we have More Problems again!! Sergio Just don't get IT!!

Just out of curiosity... what were your "rounds" with bnm? I did a lot of research before I ordered my breech. I wasn't even sure if they were still in business because they didn't get many mentions in the past couple years.
Kris

ACZan · « **Reply #53 on:** May 02, 2018, 10:27:43 PM »

Kmaz,

Did you say yours was a rear bolt? Just to be sure everyone sees this again, this is what I have found.

I did manage to measure both the bolt lengths on both the Breeches(BMDSHSH3001 and BMDSHSH3002) (both side bolts) I received from BNM Custom. Both of them basically come out to 3.3000 inches on my micrometer.

There is a good possibility that the TP sleeve not actually seating up against the TP hole of the barrel could explain some air leak issues. If you look at my drawing of the TP assembly there are concerns to be seen there. I am going have to redesign something to straighten that assembly out. Knife' was fairly convinced the tubing option took care of the fps loss. The question is this. Is the tubing seating directly on the barrel. BNM Custom's TP sleeve does not at all.

Dealing with each issue at time is the only way to identify the cause. If there several improvements along the way, then the design had multiple flaws contributing to the fps loss.

ACZan · « **Reply #54 on:** May 02, 2018, 10:46:41 PM »

Okay, Guys.

I thought it wouldn't take very long after I sent the same message to BNM Custom as I did to MNB Aerospace that I would get a response. Especially after the way I worded it. Below is what I just received seconds ago.

Hello Chris

Could you send the breech back to us it seems like the block has some issues the barrel should go all the way in that is why doesn't clear the pellet Let me know thank you !!!!!!!

---
BNM products and services Inc

John

Kmaz · « **Reply #55 on:** May 02, 2018, 10:53:25 PM »

I have a rear bolt. I was getting a lot of leakage with the supplied aluminum tp. The tubing worked perfect. But since the tube isn't turned down at the end ( like the factory tp) I did enlarge the seat on the barrel.
I wouldn't think it would be the bolt because you can only lengthen it so much before you have issues inserting or removing mag. I think mine could be 3/32" longer without interfering with the mag.
I'd be curious if we measured from front of breech to the front of the magazine throat , to the rear of mag throat, to the rear of the breech if our measurements would match.
Kris

Kmaz · « **Reply #56 on:** May 02, 2018, 10:57:41 PM »

Quote from: ACZan on May 02, 2018, 10:46:41 PM

Okay, Guys.

I thought it wouldn't take very long after I sent the same message to BNM Custom as I did to MNB Aerospace that I would get a response. Especially after the way I worded it. Below is what I just received seconds ago.

Hello Chris

Could you send the breech back to us it seems like the block has some issues the barrel should go all the way in that is why doesn't clear the pellet Let me know thank you !!!!!!!

---
BNM products and services Inc

John

Ha!... I was posting when you posted that. Like I said above , it's like it was possibly indexed wrong in the mill.
Kris

ACZan · « **Reply #57 on:** May 02, 2018, 11:08:06 PM »

Gotta remember if you move one thing, many other relationships in and amongst the parts have to change, too. There is enough room to lengthen the probe and still have it fully retract from the magazine. Lengthening the probe will not change those relationships.

Pecor, what do you call that being you have in depth knowledge in that area?

Also, If the block is bored deeper to shift the barrel back will not allow any Crosman barrel to work with that breech. The TP holes all be out of whack. Anyway, there isn't much more room to bore deeper to shift that barrel back.

I mentioned this early on in the topic. There might be references over in the chamber-leade topic from which this topic was spawned.

What we have determined on the side bolt is that the incorrect length is 3.3000 inches. What is the length of a properly working side bolt.

Kmaz · « **Reply #58 on:** May 02, 2018, 11:13:32 PM »

Quote from: ACZan on May 02, 2018, 11:08:06 PM

Gotta remember if you move one thing, many other relationships in and amongst the parts have to change, too. There is enough room to lengthen the probe and still have it fully retract from the magazine. I mentioned this early on in the topic. There might be references over in the chamber-leade topic from which this topic was spawned.

How much longer can your bolt probe be made? Like I stated above mine can only be maybe another 3/32"

pecor · « **Reply #59 on:** May 02, 2018, 11:17:34 PM »

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BNM Bolt Probe Problems?

Author Topic: BNM Bolt Probe Problems? (Read 22366 times))