Engineering compromises leading to exhaust threads stripped (2012)

Re: Engineering compromises leading to exhaust threads strip

+1 to bengs comment

you don't need a PhD in aero space engineering to keep a commando on the road - :shock:
 
Re: Engineering compromises leading to exhaust threads strip

Unch ! heat and anti-sieze and no retainers or copper silicone to preciou$ threads. Best to let it get loose , hate retainers cause they hide chattering,and Know what's a' -happening' and pull over to secure until proper wrench time.. Never stripped or screwed one up in 35 yrs. Carefull threading in nut , these are delicate and fine thread. Hot. DRIVe, re-tighten hot. Stand on the wrench .
 
Re: Engineering compromises leading to exhaust threads strip

Welded the insert in with the head in situ?? :shock:
 
Re: Engineering compromises leading to exhaust threads strip

concours said:
R.H. side fitted with grade 8 bolts, 1-3/8" clamp
Engineering compromises leading to exhaust threads stripped (2012)

Very clever 8)

Jean
 
Re: Engineering compromises leading to exhaust threads strip

concours said:
R.H. side fitted with grade 8 bolts, 1-3/8" clamp
Engineering compromises leading to exhaust threads stripped (2012)

Very clever 8)

Jean
 
Re: Engineering compromises leading to exhaust threads strip

+2 for liking the exhaust pipe brackets. will be looking for the on going long term test results :)
 
Re: Engineering compromises leading to exhaust threads strip

Just a comment on the Tap Magic for Aluminum. The stuff works great on taps and files! I have also used it on belt sanders and carbide burrs. On sand paper it works really well. Extends the life of a sanding belt by x10 (Not kidding - I did the experiment.) when sanding aluminum. Just soak it down and it keeps it from clogging up.

The same company makes a product for steel which in my experience does NOT work.

Dan.
 
Re: Engineering compromises leading to exhaust threads strip

Jeandr said:
concours said:
R.H. side fitted with grade 8 bolts, 1-3/8" clamp
Engineering compromises leading to exhaust threads stripped (2012)

Very clever 8)

Jean

Thanks I'm daydreaming up the final solution to include the mufflers supported from the cradle. I saw a pic of someone's angle iron brackets.. the right idea
 
Re: Engineering compromises leading to exhaust threads strip

Thats going to be intresting , there a fair way off/ out , the muffler mounts .

A rose by another name , Need a Naming Competition . :) Solid isolated ??

Engineering compromises leading to exhaust threads stripped (2012)
 
Re: Engineering compromises leading to exhaust threads strip

Does it really need to be more than this ? :
Engineering compromises leading to exhaust threads stripped (2012)
 
Re: Engineering compromises leading to exhaust threads strip

Jeandr said:
concours said:
R.H. side fitted with grade 8 bolts, 1-3/8" clamp
Engineering compromises leading to exhaust threads stripped (2012)

Very clever 8)

Jean

I agree - very clever. I'm surprised Norton didn't do this originally, as they did almost the same thing on the P11 Ranger. There is a bracket that bolts on to the pillion peg and connects to the muffler clamp. This way, each side is supported at three points - the exhaust rose, the end of the exhaust pipe, and the muffler. Of course, its easier to do this when the engine is rigidly mounted.

I've only seen a couple of P11s that still have this bracket.
 
Re: Engineering compromises leading to exhaust threads strip

Do the brackets hit the frame rail when the bike is not on the centerstand?
 
Re: Engineering compromises leading to exhaust threads strip

So at this point, the silencer itself is still attached via the rubber isolation stud thingie?
 
Re: Engineering compromises leading to exhaust threads strip

Onder said:
So at this point, the silencer itself is still attached via the rubber isolation stud thingie?

It would make sense that it still does. The muffler still has to be isolated from the frame, as its solidly mounted to the engine, and with this adaptor, mounted to the engine cradle. Without the rubber mounts on the muffler, there'd be a lot of stress on the muffler-tailpipe joint.

If you think about it, the Commando drivetrain is isolated from the chassis by rubber mounts at 7 points - the front and rear isolastic, the head steady, the two shocks at the swing arm, and the two mufflers. The engine, transmission, primary, swingarm, rear wheel and exhaust are all bolted together.

Another reason why there are so many ground wires on this bike.
 
Re: Engineering compromises leading to exhaust threads strip

rvich said:
Do the brackets hit the frame rail when the bike is not on the centerstand?

no
 
Re: Engineering compromises leading to exhaust threads strip

350 miles, so far so good
 
Re: Engineering compromises leading to exhaust threads strip

acotrel said:
Does it really need to be more than this ? :
Engineering compromises leading to exhaust threads stripped (2012)


That's the first step down the right path.. have a look at the spherical graphite/stainless mesh gasket, item 17 and 47. This is a snowmobile exhaust, the engine is rubber mounted and at idle, shakes like a whore in church. This joint design lasts and lasts..
http://partsfinder.onlinemicrofiche.com ... &A=646&B=7
 
Re: Engineering compromises leading to exhaust threads strip

The number of "engineering" compromises made on the Commando, in favor of production cost-cutting, would start World War Three in the Norton Owners' Community if they were ever published. I don't know them all (maybe 20%), since I was in the R&D/Competition department at Marston Road and wouldn't even comment about those I do know!

Water under the bridge a long time ago.
 
Back
Top