Does your Cougar TQS need a brake job?
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I had don a post with a fix for this with no need to buy anything. Hmm where can it be?
Dunno but would be helpful if you found it…
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Thanks jetlag that’s the one.
I was so tired I slept while searching for it.And as a matter of fact I must replace them after so many years as it became butter again.
Στάλθηκε από το MI 5 μου χρησιμοποιώντας Tapatalk
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Copper Grease…roger
https://www.canadiantire.ca/en/pdp/permatex-copper-anti-seize-0383776p.htmlThat’s the right stuff Mower, a 227g can should keep you going for at least til 2035 if not more
Do you have a cycle repair shop in town? Stop in past and see if you can “borrow” a tablespoon’s worth, that would be plenty for the Cougar.
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Or maybe a brother can mail me a glob…?
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Since I haven’t seen it mentioned in this thread…
I cleaned mine up with rubbing alcohol and greased liberally with nyogel 767a. I also performed the washer mod on the brake lever adjustment screw. Between the two, I have buttery smooth action with zero stiction.
I do wish the clearances in the bearings were much tighter, and that the friction brake was on the end of the axis rather than pushing from the side. Wider, tighter tolerance bearings would provide even more friction from the nyogel, requiring less force from the friction brake, which is a fairly poor design.
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Since I haven’t seen it mentioned in this thread…
I cleaned mine up with rubbing alcohol and greased liberally with nyogel 767a. I also performed the washer mod on the brake lever adjustment screw. Between the two, I have buttery smooth action with zero stiction.
I do wish the clearances in the bearings were much tighter, and that the friction brake was on the end of the axis rather than pushing from the side. Wider, tighter tolerance bearings would provide even more friction from the nyogel, requiring less force from the friction brake, which is a fairly poor design.
I’ve always been tempted to see if I can’t find a way to incorporate standard, actual bearings into the throttle assembly. Might take it apart one night and see what I can think of.
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Anybody know how the alleviate the stickiness of the TQS, make its motion smooth?
I answered your question on 72nd forum but in case you didn’t see it:
The best remedy is to apply UHMW tape to the barrel where the brake pad is positioned which alleviates the stiction and use Nyogel 767 A grease to make sure throttle doesn’t get sloppy (it grips more than other greases and does not have stiction). Make sure grease is not petroleum based as it will eat away at the plastic. Lithium grease is a cheap alternative and is totally safe, but might make the throttle sloppy.
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Since I haven’t seen it mentioned in this thread…
I cleaned mine up with rubbing alcohol and greased liberally with nyogel 767a. I also performed the washer mod on the brake lever adjustment screw. Between the two, I have buttery smooth action with zero stiction.
I do wish the clearances in the bearings were much tighter, and that the friction brake was on the end of the axis rather than pushing from the side. Wider, tighter tolerance bearings would provide even more friction from the nyogel, requiring less force from the friction brake, which is a fairly poor design.
I did washer mod too. I forgot I did that. Yes mine works perfectly now.
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I did washer mod too. I forgot I did that. Yes mine works perfectly now.
What’s this “washer” mod please?
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stick a washer under the friction brake adjustment wheel or between the arm and the wheel.
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I’ve always been tempted to see if I can’t find a way to incorporate standard, actual bearings into the throttle assembly. Might take it apart one night and see what I can think of.
Honestly, I don’t think it would be terribly beneficial. Friction bearings with good grease get the job done quite well, and are much quieter than anti-friction bearings with a light oil.
If you could 3D print and machine new bearings with tighter tolerances, you’d be in really good shape.
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machine…bearings with tighter tolerances,
Which is what TM should have done in manufacturing to begin with. A good reason for my love-hate relationship with my Cougar
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I wonder if one could 3D print a strong enough arm and guide rail to make the throttle have the RL range of motion?
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Which is what TM should have done in manufacturing to begin with. A good reason for my love-hate relationship with my Cougar
Having only owned my cougar for a few months, I have to wonder if the tolerance was tighter, but has since increased due to the particular plastic shrinking.
It appears this is what happened with the friction brake, as it’s almost useless without the washer mod. And the friction brake and inner bearing materials seem to be the same. So it would seem to me that the different plastic just shrank a bit, causing a lot of the slop we see now.
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I wonder if one could 3D print a strong enough arm and guide rail to make the throttle have the RL range of motion?
It’s certainly been tried. Over on VP there was once someone named Penny printing replicas of the real arm, an a few folks have modeled the real arm for printing. Makerbot now offers a new “Tough PLA” that would certainly work for this purpose - we use it at work for prototyping…VERY tough stuff - machinable, threadable…durable. In fact, it’s tough enough to wear the print head - when you buy a roll of it you get a new print head, so it’s not exactly cheap compared to standard PLA.
I happen to have a real F-16 throttle arm/friction assembly, and an adapter for a Cougar grip. Now to get a real throttle grip…