Will's '75 Commando custom restoration

grandpaul · Sep 25, 2008

I received the engine for overhaul, then after a few back and forth discussions, will decided to send me the whole bike, mostly dismantled.

It was a rusty bugger, and the engine had been beaten up trying to free off the stuck pistons; pretty sorry sight-

Stripped everything for powdercoat-

Not much for chrome-

Mishandling by UPS, and possibly some inadequate packing resulted in broken fins on the head and cylinders. Cylinders aren't such a big deal,
but the RH4 head IS!

The rods had been flopped about, resulting in some nicks-

All the dull bits going out to the polisher-

grandpaul · Sep 25, 2008

Powdercoated stuff back, exactly as ordered by the client-

Chromed suff back, out to wheel lacing next-

Polished bits all sparkly, my favorite-

Tony F · Sep 25, 2008

I love seeing these old bikes being brought back to life. Good work!!

batrider · Sep 26, 2008

How about some "after" pictures of the con rod nicks? They looked really bad.

Thanks!

grandpaul · Sep 26, 2008

The rod close-ups will be coming post-haste when I get busy building up the lower end, probably next week.

I'm still clearing the decks from a long racing season and making space in the shop for three simultaneous builds (although one is 70% complete).

Coco · Sep 26, 2008

I love the shiny bits. I'm now thinking I should have had my conrods polished while the motor is being rebuilt.

Paul, what is the frame colour? It looks kind of like a blue/grey on my screen.

grandpaul · Sep 26, 2008

It's a "Dove Blue" or something like that (the powdercoater stayed with the paint chip). The client is shooting for something looking akin to the Paul Smart Ducati. I think it's a pretty smart color selection if we end up with the Silver tank.

Another goal is a custom oil tank, as small as possible, up against the rear fender, across the frame, to produce an "open space" behind the air filter area. That'll be combined with a small gel cell battery (no electric starter will be used).

tpeever · Sep 26, 2008

Who did the polishing for you? Looks like an excellent job!

grandpaul · Sep 26, 2008

I have a subcontractor who works in large volume business, I have to send him 3 bikes worth of parts at a time to get a reasonable discount. But, he's the best.

If you want a project done, give me a heads up and I'll try to coordinate 2 other projects to make a go of it. I'm talking about $250.00 for the typical Norton project as seen in the photo.

grandpaul · Sep 29, 2008

Rods polished out quite nicely. Just a hint of the nicks that were too deep to polish out, smoothed to the point where they will not be an issue.

splatt · Sep 30, 2008

Thoose rods will look nice sticking out the bottom of your crankcase,dont be so mieserable. Read les emerys comments on later model rods.

Ron L · Oct 1, 2008

Thoose rods will look nice sticking out the bottom of your crankcase,dont be so mieserable. Read les emerys comments on later model rods.

Are they "D" rods? Not all '75's were fitted with them.

norbsa48503 · Oct 1, 2008

So Paul, have you polished a turd?

Jason Curtiss · Oct 1, 2008

So, what is a "D" rod and why are they a problem?

grandpaul · Oct 1, 2008

Greg - the nearest thing to a turd that I've polished was the clutch cover of my '75 Honda CB550. I spent several hours a day for several days with 0000 steel wool, wadding polish and Simichrome, and it only looked marginally better. Never again; I send all my stuff out now, every other month or so in a big ol' box. It all comes back nice and sparkly.

Splat & Ron - more info on those rods would be appreciated...

Reggie · Oct 1, 2008

Jason / Grandpaul, go to Norvils website;

http://www.norvilmotorcycle.co.uk/

Go to "tech talk," and scrolldown to "D rods, demons be gone."

Not everybody agrees that they are prone to fail early, but I decided to put new rods in my MK3 which for some reason had one NM prefixed rod and one "D" rod in :?: Also as I didn't know the history of the engine, and chose to play safe.

grandpaul · Oct 1, 2008

Thanx.

They are NON-D-Spec.

Jason Curtiss · Oct 1, 2008

Thanks for the link Reggie!

79x100 · Oct 1, 2008

I don't think that I would put those rods back in. The residual damage would still provide a starting point for a crack in my opinion and they had clearly been very roughly treated.

grandpaul · Oct 1, 2008

The client will make the final call based on his anticipated use and available budget, after all of these suggestions & recommendations are noted. I'm leaning toward recommending replacement.

Thanx.

Will's '75 Commando custom restoration

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