850 MkI identification?

Redline is shown as 7000 on both. Max torque is listed at 5000, and I believe max HP is at about 6200. I take my 850 to 6000 in the first 2 gears. Haven't broken anything yet.

I seem to recall mention in the manual that even though you can rev a Mk1 to 7000rpm in the heat of battle (so to speak), the "sustained" limit is 5800rpm. Superblend bearings or not, the crank is doing a fair imitation of a jump rope at that speed and the crankcases are like a vibrating wine glass right before it shatters. Ignition, carburetion and gearing should all be tailored to personal usage with those impersonal limits in mind....right?

Kip said:

I seem to recall mention in the manual that even though you can rev a Mk1 to 7000rpm in the heat of battle (so to speak), the "sustained" limit is 5800rpm. Superblend bearings or not, the crank is doing a fair imitation of a jump rope at that speed and the crankcases are like a vibrating wine glass right before it shatters. Ignition, carburetion and gearing should all be tailored to personal usage with those impersonal limits in mind....right?

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According to the Commando Workshop manual 06.5146, max torque:

45 lb,/ft. @ 5000 Standard
46 lb./ft. @ 6000 Combat
56 lb./ft. @ 5000 850

The Norton (Smiths) tach RSM 3003/15 shows red from 7000-8000.

The 72 Brochure:
Max Cruising RPM (Standard and Combat): 7000
BHP at Seal Level:
60 @ 6800 Standard
65 @ 6500 Combat

The 74 Brochure:
Max Cruising RPM 5900
BHP, Silenced to California standards: 60 @ 5900, 47 @ 4500

So, if all/any of that is right, it seems that there's little point going over 6800 on a standard 750, 6500 on a Combat, or 5900 on an 850 (maybe more with hamcan/peashooters).

I suppose that quite a few here have dyno results - any with stock bikes? I get asked a lot what the redline is and I just say 6000 to keep them from harm when they go over - tell them 7000 and 8000 will be tried!

You guys are speaking of a range I seldom allow my venerable old girl attain these days. 5500 is max for me and only if necessary for quick satisfaction and then dropping back down keeping about 4200-4500 because she's anything but new.

Took my 750 street tracker out this Friday, it's geared a little low. Has a single Mikuni with intake manifold work. Revs right past 5000 and was shifting at 6000-6200 Fun afternoon!!!