vibes at 2k

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ok another question regarding my just completed 72/73 commando...at around 2k rpm on the center stand I get quiet a bit of vibration effect at headlight and gas tank...on the road bike is super smooth no vibes..what a revelation compared to my 68 BSA A65!...anyway what does 2k-ish rpm vibes mean regarding the isolastic setting? if anything.. I have new adjustable on rear and excellent condition one on front...thanks again
 
If its only on the centre stand then its no issue, only worry if its on the road. The centre stand is located on the engine plates not the frame and so the weight of the bike is on iso's, you can help stop the iso's taking a set from this by installing the MK3 suspensory device to the head steady, it also lets you fine tune the on road vibes so they are even less.
 
Totally normal . never try and strobe it whilst it is on centre stand , you will end up chasing it round the shed. get a friend to sit on it and thrash it to the 5000 revs ( for boyer)
 
Every Commando I've ridden or observed shook about quite a bit under 2800 rpm then everything goes smooth above that ( or should) right to redline.
In reading Norton literature re new bikes, this is how it has always been.

As you say, on the road it is a revelation in smooth as compared to an old 650 Bonnie, BSA A10 or A 65, Norton Atlas or even a Honda CB750 with its godawful tingling vibration at 70 mph.
 
thanks fellers...hopefully NCDMV inspector comes to house this week ( i've been waiting 3 weeks already) so I can start title process and get tag.. I took another short (no tag) spin yesterday and am itching for real shakedown on 40 mile route I ride my other bikes on sunday mornings..
 
The remainder of my short N-V career involved the AJS Stormer street/trail bike. We were still trying to figure out why the Starmaker engine, which was virtually indestructible in continuous high power use (moto-cross racing), was destroying itself with piston ring/cylinder "welding" in street use. I rode the prototype from home to work daily, across Wolverhampton on city streets and the first liner was destroyed in about 500 miles. There were circumferential ridges around about 40% of the liner, centered on the exhaust port and about every 0.2 inches all the way up to nearly the top.

Using Castrol "R" in a street bike was our only viable early fix, but it couldn't have survived as a production set-up. I had to shake the bike for about 5 minutes before leaving for work to make sure the oil and gas had re-blended after an overnight stop. Everyone was still scratching their heads when I quit N-V and left for Boeing.
 
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