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Thread: Elu 172 Belt Vibrating/Flapping
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19th January 2016, 07:43 AM #1New Member
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Elu 172 Belt Vibrating/Flapping
(My first posting so I hope I'm in the right spot.)
I have a Elu 172 flip saw and the belt, in a no-load situation, flaps enough to hit the sides of the cover. It's quite noisy and I don't want to have the (expensive) belt fail prematurely.
I just replaced the old belt that recently broke and it also flapped and I was hoping the new one would solve the issue. There is no means of adjusting the tension on the belt which would seem the logical first step.
Does anyone else have the same issue with their Elu? Any suggestions on a fix? or is it a case of "Just live with it." Everything else on it seems fairly well designed.
Edit- Additional info:
To save some searching and a lot of pain if you are looking for a replacement belt!... the replacement belt is a 240 XL 100, not a metric belt as you would assume. The metric specs are Pitch 5.08mm Length 609.6mm Teeth 120, Width 25.4mm.
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19th January 2016 07:43 AM # ADSGoogle Adsense Advertisement
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19th January 2016, 10:29 AM #2
G'day PK and welcome to the Forum
The TGS 172 is a great saw!!! I bought mine about 30 years ago second hand and it still runs well.
You are right about saying that there is no adjustment for the belt. It is a long time ago that I had to change the belt. Mine had snapped, hence the change. How did you replace the belt? Did you wind out the saw spindle pulley so you could mount the belt on it the screw the pulley back on while sliding the belt onto the motor pulley? Its hard to describe so I hope its clear what I mean. OR....did you stretch the belt over the two pulleys and get it on with "brute force"?Just do it!
Kind regards Rod
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19th January 2016, 11:00 AM #3New Member
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The change was easy.
I locked the blade spindle with a piece of pine wedged in the blade. The bolt that holds the cogged pulley on the blade spindle is a right hand thread. After removing the bolt and using the pine again, the cogged pulley was loosened in a left hand direction using a "boa constrictor strap wrench" on the cog. Cogged pulley removed, I put the belt on it and motor pulley, lined up the blade pulley with the spindle and screwed it back on. Easy and no brute force. (I must have read a previous posting here of how to get it on without stretching/breaking it
I'm just confused that the old belt and new belt vibrates/flaps. I would expect that an old belt would stretch and be a problem...not a new one. There is no play in the bearings to make me think they would be the cause either.
I could modify it and add in a tensioner, but if others have the same "problem" without any ill effect, I would just live with it and save some time and trouble.
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19th January 2016, 11:26 AM #4
Well you have done everything right....the only thing I can think of is that the belt may be just a tad long, but that doesn't stack up against the fact that the belt went on using the "screwing the pulley on" method. Could the belt be not right in its manufacture? By that, is the belt uneven somewhere in its manufacture? I know I have changed Vee belts only to find they had a lump in them creation vibration.
Let us know how you get on
Right here and now its Tuesday 19 at 11.24am. The day is getting hotter 24° expected with no sign of rain. What is your situation?Just do it!
Kind regards Rod
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19th January 2016, 12:35 PM #5New Member
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We had a slow and mild start to the winter but tonight is expected to be -19°C overnight, loads of snow and windy tomorrow! We've seen reports of the fires in parts of AU. Hopefully you'll get the rain you need... Then you can enjoy that 24°weather.
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19th January 2016, 10:28 PM #6
Normally when this type of belt is used they are a very tight fit with no looseness in the straight sections of the belt to flap around. Are the pulleys in good condition?
Welcome to the forum.
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23rd January 2016, 03:36 AM #7New Member
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There is some wear on the pulleys:
Drive pulley dia. 57.7 mm (should be approximately 57.77 mm)
Driven pulley dia. 60.85 mm (should be 61.06 mm)
Probably enough wear to warrant replacement. While I'm in there, it makes sense to do the bearings.
So not the cheapest fix @$125 CDN for pulleys and shipping from the UK + another $40 for bearings locally sourced, but still much cheaper than new saws.
I'll update when done and hopefully it takes care of the flapping.
Thanks very much for the help so far!
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3rd May 2018, 11:15 PM #8New Member
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How did the pulley and bearing repair work? I have the same problem!
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4th September 2019, 06:53 AM #9New Member
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I have a 1982 model. Its belt was very quiet and tight, but perished and broke. The first supplier's belt flapped like hell. The second supplier, having a different make of belt, fitted tightly and is quiet. Both belts were of the same specs. I bought a spare belt just in case I cannot get one in future, although I think I am optimistic. The belt will probably outlive me by many years since the broken one lasted some 37 years. I am in South Africa. The belt cost me the equivalent of 7.83 Aus dollars.
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