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Post by woodie on Oct 3, 2013 11:05:20 GMT -5
I thought I would start a separate thread on this so it would be easier to find and discuss. I recently sold my TS75 with the intent of buying an MT55cc. I'll admit, I was a bit hesitant after seeing the video posted about the variable speed issue. Well I ordered one anyway and got it yesterday. Of course the first thing I did was test the saw on slower speeds. I guess I secretly hoped this was an isolated problem. It appears it isn't... although mine acts a little different, making me think this may be an actual product defect. My saw runs smoothly at speed 1 then surges between 2 and 4, smoothing out again at 5 and 6. I tested my KSS80 thinking that it might be an issue with Mafell's speed controller and 120 volt tools. Well my KSS80 (120V) runs smoothly at all speeds. I haven't tried the MT55 under load at speeds 2-5, perhaps it smooths out? Has anyone tried contacting Mafell directly on this yet?
MT55
KSS80Ec
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Post by woodie on Oct 3, 2013 11:28:52 GMT -5
Ha! I just noticed how much the KSS80 jumped when starting at speed 1. That thing is a beast, such a cool saw!
Jalvis, I know you said you got a new motor control for your MT55 a while back. Does your saw do this at all now?
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Post by GhostFist on Oct 3, 2013 13:13:52 GMT -5
I just sent a little blurb to Mafell via their UK site, I'll post back if and when I get a response.
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Post by woodie on Oct 3, 2013 13:44:25 GMT -5
Thanks GhostFist. I sent an email to mafell.de with a link to the videos as well.
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Post by GhostFist on Oct 3, 2013 14:34:18 GMT -5
Soo....what have you built with that KSS 80 so far?
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Post by woodie on Oct 3, 2013 16:22:20 GMT -5
Sadly I haven't used it much yet. I had an issue with the cross-cut rail that had to get sorted out. That got squared away yesterday as well.
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Post by GhostFist on Oct 3, 2013 16:41:00 GMT -5
what was the issue?
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Post by woodie on Oct 3, 2013 23:49:09 GMT -5
The detent wasn't set correctly to cut at 90°. There's no play to the detent so you can't fudge it one way or the other either. Mafell did a great job handling it, they just wanted to make sure I wasn't crazy... apparently it's the first time they've ever had a rail that was off. Some poor guy at Mafell isn't going to get his Christmas bonus now because of me  . On the plus side I found out what their tolerance is for setting the angle detents on the KSS rails, 0.1mm over the length of the rail. Thats pretty good. |
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Post by woodie on Oct 4, 2013 0:06:02 GMT -5
Another interesting discovery tonight with the MT55. I wanted to see how the saw would respond under load on the lower speeds. So I plugged the saw into my dust extractor and hooked the hose up to the saw. I did a few cuts in a 4/4 board of cedar I had and started at speed 4. Then I went to speed 3 and speed 2. There was no surging... the saw maintained a constant speed through the cut. I decided to try the saw again without cutting. It maintained a constant speed? I disconnected the saw and plugged it directly into the wall outlet and the surging returned, huh? Plugged it into the dust extractor again and the surging went away... has anyone else noticed this?
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Post by 7 on Oct 4, 2013 0:22:41 GMT -5
I think mine was hooked to an extractor and still surged on the low speeds. I can't be positive so I will check tomorrow and post again after repeating your process. I know for sure that I did try it under a cutting load and without and it still surged. Not positive about the extractor part though.
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Post by woodie on Oct 4, 2013 9:06:49 GMT -5
Never mind, I tried it again this morning and it still surges on speeds 3 and 2 when connected to my CT26. It is less noticeable, and on speed 3 it stabilizes as soon as the blade comes under load. I did it on and off the extractor several times last night and I know it worked. I guess it was just a fluke.
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Post by jalvis on Oct 4, 2013 9:52:39 GMT -5
Ha! I just noticed how much the KSS80 jumped when starting at speed 1. That thing is a beast, such a cool saw! Jalvis, I know you said you got a new motor control for your MT55 a while back. Does your saw do this at all now?I contacted a guy at Mafell about the problem when I got my saw. My saw was the first to have this issue and it has something to do with the 120v USA power in relation to the control module. Apparently none of the Euro saws or 220v had any issues. I talked with Denis Lacroix from Mafell Germany. They did something with the Module and sent me a new one. |
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Post by jalvis on Oct 4, 2013 9:58:50 GMT -5
After watching the videos posted it seems like the Module allows the saw to run at far to low of a speed. Like I said before I don't think theres a material that would benefit from those low speeds. I know my original module would get the speed so low I could count the teeth while spinning. My new module seems to bring the lower speeds up.
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Post by woodie on Oct 4, 2013 14:14:24 GMT -5
After watching the videos posted it seems like the Module allows the saw to run at far to low of a speed. Like I said before I don't think theres a material that would benefit from those low speeds. I know my original module would get the speed so low I could count the teeth while spinning. My new module seems to bring the lower speeds up. I think you might be right regarding the speed being too low... I'm curious now. As Ghostfist mentioned, paying the premium we do for quality tools, it's more the point of the tool working the way it was designed and marketed. Although I admit I rarely adjusted the speed on my TS75, knowing I could was a plus. I've got an upcoming project with some acrylic panels that need to be cut, but according to this guy you don't need no stinking speed control  |
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Post by 7 on Oct 4, 2013 21:27:12 GMT -5
Mine pulses just as I thought on or off the vac. That old timer cutting acrylic video is great. I'm sure that is the very best way to cut a circle out of acrylic haha.
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