RPM a cautionary tale

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That Tack looks same as Wes's 71 and both my 72s. Best looking of the clock styles to me. Can ya even imagine bouncing the needle off back side of zero peg and then even more, ugh. Cryogenic tempering of whole engine down to fasterens may of saved total destruction. I later found out 1000 mile later it was cam chain w/o tensioner that though timing off so ran out of spunk at 5000 rpm. I only discovered that when Peel eventually sezied while easing home into garage, but turned out only to be a belt pulley side plate loctited screw shook loose and snagged in case wall but put back and carried on another 1000 miles up 110 mph, as that's as fast as she'd go afterwards with the huge winter wind screen on.

The strangest part was Peels crank half self healed the excessive bending of 1/16" DS and half that on TS and may of continued to correct like there was metal memory at work destressing back to the frozen pattern?
 
L.A.B. said:
Rohan said:
All early Commandos had no red line marked on the tacho.

Only the earliest Commando tachos had no red line (RSM3003/10).
The RSM3003/12 tacho with red line was fitted from around early-mid '69.
RPM a cautionary tale

Wierd, that one doesn't have it at 8K, either...
 
Not sure my mates exploding engine was running on super blends...when did they come out?
worntorn said:
I take my mk3to the redline quite often and have always done so, never worried about it Didn't think they were that fragile? Maybe I am on the cusp of total destruction. Norton did beef up the crank a bit along the way and added Superblends, not without reason. And then there was the Combat, known for bottom end failures. Were these exploding bikes Combats?

Glen
 
john robert bould said:
Not sure my mates exploding engine was running on super blends...when did they come out?

Sometime around August 1972.
 
L.A.B. said:
Rohan said:
All early Commandos had no red line marked on the tacho.

Only the earliest Commando tachos had no red line (RSM3003/10).
The RSM3003/12 tacho with red line was fitted from around early-mid '69.
RPM a cautionary tale
So if I can just get past 9000rpm, I'll be in the green?
 
Yep mid green globe is ~10 grand and back of 0 peg ~11,000, then scale folds back on itself beyond that.
 
pvisseriii said:
So if I can just get past 9000rpm, I'll be in the green?

Yep - the red zone is to warn you that you are about to hit the green zone, where it explodes into action ?!!?

???
 
Duh matt there's a zero peg to prevent spinning around so needle just bounces off it back wards. I tell you what though there are very few things more exciting G wise than running around in lower gears in and out of the red zone on a Commando. A Combat after 6800 should become a roll on wheelie monster but only to float front good to leap forward harsher not just fly up like a stupid modern w/o wheelie control does, as long as not a clutch drop near red zone on standing starts. I have been a bad bad boy to my mine time to time. Still makes my gut hit my soles reflecting on the missed shift that launched this emotion filled thread. Someday hope to have a big twin screamer hitting its rev limiter. Oh yeah with needle on back side of peg it begins to sound like an extra loud powerful inline 4 : )
 
Five-four-three-two-------one! Wheres Gerry and sylvia when we need them :lol: Hobit, you take thunderbird two! Spinning the rear thruster into hypa rev's :lol: not to pull your strings to hard.
 
Oh John, i'm an innocent victim starting with the P!! that these buzz saw H2's would pull up on at my legal speed then rev like a chain shain jerking ahead a bit to tempt me until they'd get a couple 3 gears down into their best power band to leap forward but by then I'd snick one lower and would flat walk away from em keepping some care not to cross the 9k mark before a shift up for another interval of front floating. Our power didn't equalize untill about 110 mph then it'd be neck and neck for another 20-25 mph before they ran out of rpm power and thank goodness as the vibration was injurious by then. I think the only thing that prevented tearing up the tranny was I and bike were so light on mere street tire instead of 4" wide drag slick. I didn't know how to service the oil stuck up clutch so to break free required a roll start jump on and NAIL it with clutch in till it let go for excessive sudden engine release like a WOT missed shift. When I caught up with the 1%'s gang on hwy going over the ton that impressed em enough to invite me into their fold which was my introduction to purified white agricultural powders not sold in stores. I had given up my first sample unsampled to swing the deal that got me the P!! in first place I'll spare ya Peel's rpm tales but the Cocaine song is Peel theme song, When ya done with your day and ya want to get down, down on the Ground >>> Ms Peel. So tell your grand kids all your safe and sound adventure tales.
 
hobot said:
A Combat after 6800 should become a roll on wheelie monster but only to float front good to leap forward harsher not just fly up like a stupid modern w/o wheelie control does, as long as not a clutch drop near red zone on standing starts...

So far, there are more reports of explosions following the above behavior on Commandos, than there are reports of wheelies.

(hence the title of this thread)
 
I'll have to ask my cousin if his 1500 mile 1 month old Combat wheelied as the crankshaft parts exited the crankcase at somewhere around that rpm.

Glen
 
Grand kids
will be spared oily legs. and alloy fragments!
My MK 3 as the lazy 4000 rev changes..no point pressing the old girl into submission. No one today gets impressed ..only with detail.


hobot said:
Oh John, i'm an innocent victim starting with the P!! that these buzz saw H2's would pull up on at my legal speed then rev like a chain shain jerking ahead a bit to tempt me until they'd get a couple 3 gears down into their best power band to leap forward but by then I'd snick one lower and would flat walk away from em keepping some care not to cross the 9k mark before a shift up for another interval of front floating. Our power didn't equalize untill about 110 mph then it'd be neck and neck for another 20-25 mph before they ran out of rpm power and thank goodness as the vibration was injurious by then. I think the only thing that prevented tearing up the tranny was I and bike were so light on mere street tire instead of 4" wide drag slick. I didn't know how to service the oil stuck up clutch so to break free required a roll start jump on and NAIL it with clutch in till it let go for excessive sudden engine release like a WOT missed shift. When I caught up with the 1%'s gang on hwy going over the ton that impressed em enough to invite me into their fold which was my introduction to purified white agricultural powders not sold in stores. I had given up my first sample unsampled to swing the deal that got me the P!! in first place I'll spare ya Peel's rpm tales but the Cocaine song is Peel theme song, When ya done with your day and ya want to get down, down on the Ground >>> Ms Peel. So tell your grand kids all your safe and sound adventure tales.
 
Alas not all of us are in full control of their fates so nothing against slow and steady but there is just no rational sense to being a motorcycler so any and every way to ride em makes as much sane sense as any. My bud Wes now and then refuses a few hours ride invitation saying ya know if ya ride they just wear out faster, ugh.

I flash back now and then on some the rides Wes and I had that stoned us so good we stop and just look around then at each other then around again just to let it sink in while it lasts. But I've also lied to Wes I was too tired to continue so we split off - just so I could Peel around with the hot shots by spiking into red zone for dozens of miles a go > which tends to be more appropriate and interesting to share here and relive myself.

I keep mentioning this is a real man's hobby horse, not so much of how tough and skilled a rider but mature enough not to give in to the chases and live within Cdo reasonable-ness. I am still an aspiring failure but getting older better at it. Our original poster did not intend to over rev but that was his bad luck of the draw eh. I've got an errand to run and trying to work up nerve as Trixie and me are both in good shape finally.
 
Short shifting at 4000 rpm isn't slow Steve, infact around town i consider it Brisk!
Plus it sounds grunty, must be from my heavy haulage days....335 cummins ...let her LUG :D



hobot said:
Alas not all of us are in full control of their fates so nothing against slow and steady but there is just no rational sense to being a motorcycler so any and every way to ride em makes as much sane sense as any. My bud Wes now and then refuses a few hours ride invitation saying ya know if ya ride they just wear out faster, ugh.

I flash back now and then on some the rides Wes and I had that stoned us so good we stop and just look around then at each other then around again just to let it sink in while it lasts. But I've also lied to Wes I was too tired to continue so we split off - just so I could Peel around with the hot shots by spiking into red zone for dozens of miles a go > which tends to be more appropriate and interesting to share here and relive myself.

I keep mentioning this is a real man's hobby horse, not so much of how tough and skilled a rider but mature enough not to give in to the chases and live within Cdo reasonable-ness. I am still an aspiring failure but getting older better at it. Our original poster did not intend to over rev but that was his bad luck of the draw eh. I've got an errand to run and trying to work up nerve as Trixie and me are both in good shape finally.
 
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