SCROLLECTOMY Posted January 7, 2016 Report Share Posted January 7, 2016 I have had an Excalibur ex-21 for around a year. At first it was really nice and smooth running . It has now developed quite a loud vibration, especially when increasing speed it gets really bad. I have tried online to find a solution. Checked forward backward movement and it seems to be fine. Have checked a bolt at the back of the saw behind the inspection plate, which someone suggested I tighten, but cannot budge it at all it is already so tight. Desperate to fix the problem so any help would be gratefully accepted. I looked in the forum to see if this problem has come up before but could not find anything, so if I missed it I apologise.... Quote Link to comment Share on other sites More sharing options...
DWSUDEKUM Posted January 7, 2016 Report Share Posted January 7, 2016 You might wish to look into this: Running rough from Kip Scrollin' with an Ex-21 http://tidewater-creations.com In recent months it has slowly but surely started running rough. Not really a vibration like before but seems to be in the upper arm. If I lift up on the arm the sound and vibration stop. I didn't realize how bad it had gotten until today when the speed control knob started clanging and I tightened set screw to fix it. Took note stock of the situation and realized how bad things are.An update...decided to wait till after the holidays to phone Ray @ Seyco as I was sure this was going to be a long process that involved taking the machine apart and tracking down various potential issues.Well of course I was wrong and it took all of 1 minute for Ray to diagnose...LOLDid have to modify a wrench but all is wellMy problem developed over time and it's best described as running rough with sounds and vibration getting much worse as speed is increased. At full speed the quick release lever would pop open. The repair was simple: remove cover from back of saw opposite motor and tighten screw in cut out area. If screw continues to turn you must apply a modified 8mmwrench to the back side and hold bolt. Tighten firmly.As shown you must add a "bend" in the wrench. You can heat it and bend it in a vise or take a hammer and beat the tar out of it. I fully recommend the later as it works great and is a stress reliever as well I have added pics in case this wasn't clear. DW Lucky2, amazingkevin, Scrolling Steve and 3 others 5 1 Quote Link to comment Share on other sites More sharing options...
Scrolling Steve Posted January 7, 2016 Report Share Posted January 7, 2016 This good info to have going forward!....Thanks DW! Quote Link to comment Share on other sites More sharing options...
amazingkevin Posted January 7, 2016 Report Share Posted January 7, 2016 You might wish to look into this: Running rough from Kip Scrollin' with an Ex-21 http://tidewater-creations.com In recent months it has slowly but surely started running rough. Not really a vibration like before but seems to be in the upper arm. If I lift up on the arm the sound and vibration stop. I didn't realize how bad it had gotten until today when the speed control knob started clanging and I tightened set screw to fix it. Took note stock of the situation and realized how bad things are. An update...decided to wait till after the holidays to phone Ray @ Seyco as I was sure this was going to be a long process that involved taking the machine apart and tracking down various potential issues. Well of course I was wrong and it took all of 1 minute for Ray to diagnose...LOL Did have to modify a wrench but all is well My problem developed over time and it's best described as running rough with sounds and vibration getting much worse as speed is increased. At full speed the quick release lever would pop open. The repair was simple: remove cover from back of saw opposite motor and tighten screw in cut out area. If screw continues to turn you must apply a modified 8mmwrench to the back side and hold bolt. Tighten firmly. As shown you must add a "bend" in the wrench. You can heat it and bend it in a vise or take a hammer and beat the tar out of it. I fully recommend the later as it works great and is a stress reliever as well I have added pics in case this wasn't clear. DW Thank you so much ,as far as i know the Excaliber and the dw788 are basically the same workings.So it should apply to both machines for this problem Quote Link to comment Share on other sites More sharing options...
SCROLLECTOMY Posted January 7, 2016 Author Report Share Posted January 7, 2016 Thanks so much for the info. I tried tightening this bolt on my machine, altered an 8mm wrench and found that the bolt was already really tight as I could not tighten it any further. So still have the vibration unfortunately. Will have to go back to the company I purchased it from and see if they can solve it. Thanks Quote Link to comment Share on other sites More sharing options...
Scrolling Steve Posted January 7, 2016 Report Share Posted January 7, 2016 Good luck Sam!.......Do let us know what the problem and the solution were! Quote Link to comment Share on other sites More sharing options...
Young_Scroller Posted January 8, 2016 Report Share Posted January 8, 2016 hey sam if I read DWs reply right he said just hold the bolt not to actually tighten the bolt but the screw, and if the screw keeps turning the hold the bolt with the wrench and continue to tighten the screw Quote Link to comment Share on other sites More sharing options...
heppnerguy Posted January 8, 2016 Report Share Posted January 8, 2016 That is what I got from the post too. It looks to me that the screw DW is referring to, is the one that has the allen wrench in it. I did not even notice the allen wrench until I looked at the third photo. Dick heppnerguy Quote Link to comment Share on other sites More sharing options...
woodknots Posted January 9, 2016 Report Share Posted January 9, 2016 I would give Ray a call at Seyco and see what he suggest. Their number is 1-800-462-3353 not sure they're open on the weekend. you may also give Patrick Margo a call if you Ray can't help you he is the guy that is over the Excalibur line for General International. His number is 1-905-822-4832 if he doesn't answer leave a message he will return your call. Try Ray first. I hope this helps Jeff Quote Link to comment Share on other sites More sharing options...
SCROLLECTOMY Posted January 10, 2016 Author Report Share Posted January 10, 2016 Thanks guys I will let you know how it all works out. Thats the exact screw I tried to tighten (As in the photo's) If I do not hold the nut at the back with the wrench the screw will turn freely. But when I hold the nut at the back with the wrench I cannot move the screw at all. It seems to be locked tight. Have a guy gonna look at it tomorrow, fingers crossed Quote Link to comment Share on other sites More sharing options...
Lucky2 Posted January 11, 2016 Report Share Posted January 11, 2016 I'm very curious as to what your problem might be, please keep us informed. Len Quote Link to comment Share on other sites More sharing options...
Thumper Posted January 15, 2016 Report Share Posted January 15, 2016 Hi. Any update on your problem SCROLLECTOMY? I have been having the same type of problem. My General/Excalibur EX-21 is only one year old as well. Took it back to Carbatec last week. One of the guy's there that does Scroll saw work had a look and said it was no right. It should run like butter. Well, it runs like lumpy butter. Got it back yesterday. Was told that they changed a linkage. Everything else was running ok. Got it home and started it up. No better, may even be worse! It will be going back. If you have any report, it may help with mine as well. Thanks Quote Link to comment Share on other sites More sharing options...
trackman Posted January 16, 2016 Report Share Posted January 16, 2016 I had this trouble with mine. It was the small arm that attaches to the motor and runs the control linkage. The bearing was bad in the arm. I could push the arm in with a piece of wood an the noise would go away. Ray is a big help even if you didn't buy from him. Quote Link to comment Share on other sites More sharing options...
Thumper Posted January 16, 2016 Report Share Posted January 16, 2016 Very interesting. Just went and tried this, and the rattly noise does stop. Still a lot of vibration, but no noise. Will tell them about this when I take it back on Tuesday. Thanks. Quote Link to comment Share on other sites More sharing options...
SCROLLECTOMY Posted January 17, 2016 Author Report Share Posted January 17, 2016 Hi Guys Update ...... The Guy that looked at my machine, has had the same machine for several years and has this problem of vibration every so often. The way he fixes it (and fixed mine) is to loosen off the bolts holding the motor, marks the position of the motor with a sharpie, then rotates the motor back and forth with the machine running on the lowest speed, and then returns it to its original position and retightens the bolts. He did this procedure on mine and it has reduced the vibration greatly. Will let you know how it progresses in use. Hope I explained it okay Quote Link to comment Share on other sites More sharing options...
Thumper Posted January 17, 2016 Report Share Posted January 17, 2016 Did he tell you what was wrong with it? Quote Link to comment Share on other sites More sharing options...
Scrappile Posted January 17, 2016 Report Share Posted January 17, 2016 Be interesting to know what that does to correct the problem. I know you move the motor to adjust the forward/back movement of the blade. It talk about that in the owner's manual. But it doesn't describe returning the motor to the original position. Anyway it is an easy enough thing to try and if it helps, great. I think I will give it a try. Quote Link to comment Share on other sites More sharing options...
Thumper Posted January 19, 2016 Report Share Posted January 19, 2016 Just dropped the saw off. Will let you know what happens when I get it back. Quote Link to comment Share on other sites More sharing options...
hotshot Posted January 19, 2016 Report Share Posted January 19, 2016 It doesn't make sense to me that rotating the motor and putting it back would have any result. Rotating the motor to find the point that minimizes blade travel would make more sense. I hope this does work for you, but the logic behind the fix eludes me. -------Randy oldhudson 1 Quote Link to comment Share on other sites More sharing options...
rdatelle Posted January 20, 2016 Report Share Posted January 20, 2016 Well we have a lot of good ideas here. I just bought a new Excalibur 21 inch a few weeks ago. Hope I don't have that problem and if I do, I'll have an idea on how to fix it. I also got this from Seyco so I wrote down Rays # Quote Link to comment Share on other sites More sharing options...
SCROLLECTOMY Posted January 21, 2016 Author Report Share Posted January 21, 2016 Yes I agree rotating the motor addresses the forward backward movement of the blade, but at this juncture I was willing to try anything to try and cure the problem. I belong to a local scrollsaw club and many of the members have the same machine. Several have tried going back to Carbatec (here in Aus) but unfortunately they do not seem to have any more expertise with this machine (probably less) than the guys at my club. There seems to be a dire need for a representative of General International to chip in and offer some solution to what would seem to be a recurring problem. So as yet I do not think that I have come across a definitive solution, but will keep trying Quote Link to comment Share on other sites More sharing options...
SCROLLECTOMY Posted January 21, 2016 Author Report Share Posted January 21, 2016 Hi Thumper Very interested in what happens with your machine and Carbatec. Some of the guys at the local scroll saw club have also tried Carbatec unsuccessfully. Its getting the expertise in Australia to fix this particular machine :-( Quote Link to comment Share on other sites More sharing options...
Scrappile Posted January 26, 2016 Report Share Posted January 26, 2016 Hi Thumper Very interested in what happens with your machine and Carbatec. Some of the guys at the local scroll saw club have also tried Carbatec unsuccessfully. Its getting the expertise in Australia to fix this particular machine :-( Seyco has a free number: 1-800-462-3353 Will that work from Australia? They are good and most time can diagnose by listening over the phone. Quote Link to comment Share on other sites More sharing options...
Thumper Posted February 2, 2016 Report Share Posted February 2, 2016 Saw still at the shop. Will keep you all up to date when I get any info. Quote Link to comment Share on other sites More sharing options...
Thumper Posted February 8, 2016 Report Share Posted February 8, 2016 Hi all. Got my saw back today. Has had the complete upper and lower drive link assembly replaced. This was not done because it was the problem, but as a "try and see" job. No problem could really be found! Seyco were contacted, as was the Australian supplier. Neither had any helpful info. It seems to be running a bit smoother, so I will see how it goes. Will let you know what happens after a bit of use. Quote Link to comment Share on other sites More sharing options...
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