1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
  2. PLEASE: Read the FORUM RULES BEFORE registering!

    Dismiss Notice

M head rattling after rebuild

Discussion in 'BRIDGEPORT MACHINES INC. & B'PORT CLONES' started by seanb, Feb 4, 2017.

  1. seanb

    seanb United States Active Member Active Member

    Likes Received:
    12
    Trophy Points:
    8
    City:
    st. louis
    State:
    Missouri

    -Return to Top-

    Its me again with another m head problem

    I replaced all the bearings in the head because of noise only to discover that the noise is worse.

    When I cut I get a loud rattling sound. I have narrowed it down to the female spline shaft that goes through the step pulley that drives the spindle.

    Does anyone know how to take the rattle out or where to get new drive spline shaft.
     
  2. chips&more

    chips&more United States Active User Active Member

    Likes Received:
    1,179
    Trophy Points:
    113
    City:
    Danville
    State:
    California

    -Return to Top-

    I can understand your frustration and on top of that the time and money that went into it. Have you thought about getting a J head and selling the M to recoup some of your $. I know it’s hard to give up any toys that are acquired (believe me I know!), but the J head is sooooooo much better…Dave.
     
  3. seanb

    seanb United States Active Member Active Member

    Likes Received:
    12
    Trophy Points:
    8
    City:
    st. louis
    State:
    Missouri

    -Return to Top-

    I have thought about it

    I got the m for $750

    Put about $400 in it

    How much do you think I could sell it for?

    I would keep the new motor $150

    It's all pretty now with all the parts there
     
  4. Bob Korves

    Bob Korves H-M Supporter - Premium Content H-M Supporter-Premium

    Likes Received:
    3,379
    Trophy Points:
    113
    Location:
    USA
    City:
    Sacramento
    State:
    California

    -Return to Top-

    You might try putting some fairly heavy grease like NLGI 2 on the spindle splines where they go through the pulley, and see if that helps to quiet it down...
     
    ch2co likes this.
  5. Timpmandan

    Timpmandan United States Iron Registered Member

    Likes Received:
    1
    Trophy Points:
    3
    City:
    Greenville
    State:
    South Carolina

    -Return to Top-

    Did you try anything or have any luck with this? I'm about to deal with this same issue. One idea I have is to use some thin "teflon tape" that timpanist use on their drums on the bearing edge where the head (skin) meets the copper bowl. It removes friction and sound when the head is tightened. I have some that is thin enough I think if I ran it vertically up a few of the splines it may help. It may need to be replaced every once in a while... (If it works, I'll report back here.)
    For those of you interested, this is teflon tape (not the plumbing kind) -
    http://www.lonestarpercussion.com/C...1839/Yamaha-W6692000-Timpani-Teflon-Tape.html
     
  6. Technical Ted

    Technical Ted United States Active Member Active Member

    Likes Received:
    84
    Trophy Points:
    18
    City:
    Dansville
    State:
    New York

    -Return to Top-

    Interesting thread. I have a M head that I mounted on my Brown & Sharpe 2B horizontal mill and it makes the same backlash noise in the spline. I've gotten used to it and just tolerate it, but if I could come up with a simple/cheap way of eliminating it I most likely would! Flustered

    Ted
     
  7. Technical Ted

    Technical Ted United States Active Member Active Member

    Likes Received:
    84
    Trophy Points:
    18
    City:
    Dansville
    State:
    New York

    -Return to Top-

  8. Timpmandan

    Timpmandan United States Iron Registered Member

    Likes Received:
    1
    Trophy Points:
    3
    City:
    Greenville
    State:
    South Carolina

    -Return to Top-

    Very interesting idea. If my teflon tape idea doesn't work you can bet I'll try that spring trick!
     
  9. AGCB97

    AGCB97 United States H-M Supporter - Premium Content H-M Supporter-Premium

    Likes Received:
    105
    Trophy Points:
    43
    City:
    Iron Mountain
    State:
    Michigan

    -Return to Top-

    When I bought my Bridgeport I knew there were parts missing for the power quill feed and thought I probably would not need it ever anyway. A few boring jobs on the mill and it was sorely missed.

    So I decided to look into getting it working. A little disassembly to see exactly what was needed and looking up those parts on machinery sites or EBAY, I quickly determined that the cost was well over what I was willing to pay. But while I was on EBAY I came across a quill housing complete that was removed from a "tracer unit". It looked like it had everything I needed by the pictures so I decided to spend the $295 and take a chance. I did not realize the truck shipping (150#) would be $120. So now I had over $400 into it.

    To my surprise that unit contained EVERYTHING I needed to make my mill 100%

    The spindle that was in it looked as though it had new bearings on it and was a Ericson QC30 in good condition. I put it on EBAY for $350 and excepted an offer of $290, I paid $22 shipping. My total expenditure now down to $132.

    Put the whole back on EBAY as a "for parts, not working" and sold a variety of lever handles etc. for about $32. Total expenditure now down to $100

    Back on EBAY and sold the rest for $100 PLUS shipping I now have all my money back and a complete mill in my shop!

    I usually don't do very well as a 'wheeler dealer' but this time it worked

    Aaron
     
  10. Timpmandan

    Timpmandan United States Iron Registered Member

    Likes Received:
    1
    Trophy Points:
    3
    City:
    Greenville
    State:
    South Carolina

    -Return to Top-

    FYI two 6" strips of the teflon tape placed 120 degrees from each other over both a raised and lowered spline made a huge difference! I tried three pieces initially but it was too tight to even get the guard housing back on to the head. I don't know about longevity yet, but I have plenty of this tape from maintaining timpani... I'll report back in a while. If anybody else is interested in doing this, I'd recommend contacting a teflon PTFE adhesive maker and ask for a thin sample. As it is a roll of tape in my form, I can't send people just small pieces. I'm sure different machines will have differing amounts of wear, so more or less tape may be needed. I can measure the thickness of the stuff I used (thinnest I had) if anybody needs that info.
     

Share This Page