I can tell you 100% it works, my dad set up every bike I ever owned that way and I have never broken a perch or leaver in 50 years of ridding. I currently have 25 bikes and they all have tape on them.
I have posted this story many times, on my WR450f I had my front wheel taken out from under me by a sheep, when I first lay eyes the sheep I was traveling at about 100kph.
I jumped on the anchors and dodged 4 or 5 of them but the last one got me, this resulted in quite a high speed high side.
My bike tumbled down the dirt road end over end 4 or 5 times coming to rest on the handlebars and seat with the wheels pointing skyward.
It knocked me silly, I could only tell my direction of travel by the gouge marks in the dirt road made by the tumbling bike.
When I got my wind back and the mates I had been racing arrived we stood the bike up, pushed all the switch gear, leavers and mirrors back into position.
The only damage was to the headlight surround, a couple of cable ties and I was on my way again.
No perch should be so tight that it can not move, it will break !!!, leaving them a little loose works but the tape is much better, it allows a smoother movement, if you don't use tape I suggest they be a little looser and Loctite on the bolts so you don't loose them.
The cost of the tape is less than one broken leaver and far less than the damage the original poster suffered, give it a try you will feel what I mean.
Just right is where everything stays in place under normal conditions but can be moved by force, with tape I don't think they could ever be over tight, Teflon creates slip.
When I first set up my V2 I had everything a little too slack, at 210kph both perches flipped back almost simultaneously, it scared the crap out of me, at my next stop I snugged them down a little more.
Of course nothing is guaranteed but the tape will give you a greater chance of winning.
Some of the 19 rides in my shed
2014 V2, Snoopy
2009 Wee, Pumbaa the pig
WR450F, The Blue Postie Bike
YZ250N smoker with rego, Stinky.
Yamaha MT09 (FZ09), The Scud missile.
Club Lead not Club Med.
He with the most toys wins.
Out of my depth in a puddle.
Live life on the edge you will see more that way.
Ridding a motorcycle keeps things in balance.
At the end of each trail and at the end of each day history is made.
Last edited by Rolex; 11-20-2019 at 08:05 PM.