Hot Rod Norton 880 long-term project

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Somebody should make a straight jacket that allows movement related to working on old bikes, but restricts movements related to BUYING MORE OF THEM!

I've been talking to Kenny Dreer (the guy that almost resurrected Norton) for a couple of years, on and off, and he told me about some leftover VR880 stuff he had that he was thinking about clearing out to make room for a couple of projects he's got going. One thing led to another and my brain started whirling till smoke came out of my ears.

I came up with a plan to build my own version of the "modern" Commando. What I envision is as near the latest VR880 tech as I can get in the engine department, and mount it in a mostly stock late model frame with a complete dual disc front end from a fairly modern bike, and a beefed up VR880 swingarm and rear disc from '75, maybe converted to monoshock. Probably standard tank & sidecovers, with a Corbin Gunfighter seat (re-padded with softer foam), some sort of very sharp quarter fairing, clubman bars, and hidden lighting. To top it off, I'm going to have a set of pipes fabricated to look like the ones on the New Norton 951 prototype mockups. Very nice TT style tuck-ins that flare out and up at the back into a pair of peashooters.

I already had the frame, tank, sidecovers, seat, and a bunch of the cycle parts sitting on my shelf. So, I talked Kenny into making me a deal on most of the core engine components he had in stock including modified cases, sleeved & bored cylinders, new pistons & rings, and a really nice flowed & ported head with oversize valves. I also just won a 750 crank on e-bay for just over $100. way back on a dusty shelf, I also had a complete belt drive primary kit that I had traded for a Triumph 10-bolt head a couple of years ago.

I'm going down to look at a front end on a bike that has a blown engine; basically just need to source a hot cam and disc brake (Norton) rear wheel, and fab up the pipes, and I can mock the sucker up!

Note larger diameter studs on the lower (left) half, right half will be matched
329340434.jpg


This is the modified left half with mountings for outrigger crank bearing
329340430.jpg


Check out the provision for the degree'ed cam mounting with roller bearing
329340438.jpg


Sleeved and bored to 880
328282628.jpg


Dished VR880 High-compression pistons with rings & pins
328282635.jpg


My dream:
at.asp
 
To hell with Intervention, I'm more of an enabler! I wish I had some Norton parts to donate to the cause. Bring it on Paul!
 
Heck yeah!

If I had a couple more enablers, this thing might just fly!

The front end I was asking about turns out to be still attached to a complete, really nice, rolling Honda chassis, less than 6 or 8 years old, in great shape (not wrecked).

I might just try something wierd (I've seen a few other do this), and plop a norton engine in a complete modern chassis, with a hand-fabricated hybrid isolastic cradle.

The best part is - IT'S CHEAP!!!! Just my price range!
 
I went to have a look at at that rolling chassis; I thought "what the heck" and rounded up enough bits to check feasibility:

Not too bad of a fit...
329505901.jpg


A little too snug to get to the exhaust valve adjusters...
329505899.jpg


the pipes would clear with the head here, but the engine has to move higher and further back for the head to line up with the jugs...
329505903.jpg


The rear isolastic would be an easy fit to the existing mounts, but there are no front mounts...
329505902.jpg


Too many issues with this chassis, but i might still buy the forks and re-paint the wheel. I wonder if I could shoehorn the matching rear wheel
into Kenny's custom swingarm? hmmm....
 
I'm going to pass on that chassis; it would need MAJOR surgery along the lines of chopping the two main spars on the sides and lengthening them about 6" to give the front wheel full clearance from the front isolastic and whatever mounting I could devise.

The guy has a "boneyard" with lots of crash-damaged bikes to choose from, I think I'll need something like a 750, 900 or 1000; he has a big Triumph triple that looks promising, but it's filthy and somewhat beat up, this one was really clean in comparison.
 
Yes, but if you try to use the bucking bronco 360 degree firing humongous lump of 880 as a stressed member, it'll stress that frame in half in about 20 miles.

Modern multis are balanced like sewing machines, so they don't input vibrational stress into the frame, only torques stresses which are relatively easy to cope with.
 
I guess i wasn't really thinking of it from that side of the coin...what the engine would do to the frame. Instead, I was thinking the engine itself wasn't up to the task of becoming a part of the chassis.
 
You must remember one thing though, they used frames that were designed for the stresses that were imposed by those specific engines. A Honda inline-4 frame, most likely, would not be very forgiving of the unusual stresses and vibrations that were not part of it's intended design.
 
As there is no way this will be a touring bike, I guess I really shouldn't be too worried about comfort. I'm wondering how much additional balancingis done on some of those customs to cut down the vides for longevity's sake?
 
There are plenty of people that simply put a modern front end on a Commando frame. The Yamaha RD 350 front wheel (mag style 18") is a bolt on using the stock axle even, with roadholder forks and has provision for dual discs. Another possibility is a "featherlastic" using a slimline frame with isolastic mountings. http://www.ntnoa.org/bobcox.htm
Using rod end engine mounts top and bottom along with isolastics really sharpens up the handling with very little penalty in vibration. Maybe you don't need to get too radical whilst updating a Norton? I am running a '75 swing arm and cradle on my '73 with a rear mag wheel from a Yammie SR500 which has a cush drive in it and is 18" so I can run modern rubber.
 
I happen to have a very nice rolling '77 RD400 chassis, but I want DUAL front discs (modern floaters), and SPOKE wheels.

A guy down the street says he's got just the front end I need, I'll see it today or tomorrow.
 

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