Now going custom with alloy bodywork!!

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Re: 1974 Commando 850 Dunstall build.

I don't know. The instructions stated that the timing indicator and possibly the lugs would need to be removed on a later cover. I found the 69 cover reasonably priced and like the look, so I removed the indicator and have lots of clearance so i'm going with it. someday i will take my combat cover and try it for shits and giggles.

BTW, those are your wheels on there.
 
Re: 1974 Commando 850 Dunstall build.

More parts arrived today. A nice used set of carbs, temporary set, Only purchased them because they came with a whole airbox I need for the combat. My Dunstall front fender and clipons arrived and my grips and throttle. So Now to make rocker shaft spacers, stock is machined ID and OD right now, assemble the head and install it. Install the carbs, clipons, finish plumbing, and temporarily wire my ignition and it should be a runner. Then on to fairing mounts and a bunch of little stuff. I need to sell a bunch of parts so I can afford to finish it. I found a set of rearsets, now if they stay reasonably priced. I hope I don't get the urge to go around the block if I get it running, neither brake is hooked up.
 
Re: 1974 Commando 850 Dunstall build.

You can fit an alternator rotor nut in a Sparx rotor by putting it in a lathe and just dressing it with a file.

...don't use a grinder free-hand...
 
Re: 1974 Commando 850 Dunstall build.

I made a new one for it, just forgot to post pictures, sorry dave.
Now going custom with alloy bodywork!!

Now going custom with alloy bodywork!!

Now going custom with alloy bodywork!!
 
Re: 1974 Commando 850 Dunstall build.

grandpaul said:
You can fit an alternator rotor nut in a Sparx rotor by putting it in a lathe and just dressing it with a file.

...don't use a grinder free-hand...
Click to expand...

I know it's been alluded to, but what is the problem with the Sparx unit and the crank nut?
 
Re: 1974 Commando 850 Dunstall build.

powerdoc said:
grandpaul said:
You can fit an alternator rotor nut in a Sparx rotor by putting it in a lathe and just dressing it with a file.

...don't use a grinder free-hand...
Click to expand...

I know it's been alluded to, but what is the problem with the Sparx unit and the crank nut?
Click to expand...

The nut can sometimes be, ahem, unwilling to fit correctly with out fettling.
 
Re: 1974 Commando 850 Dunstall build.

What part of the nut has to be fettled? Does it just have to be thinner or does the inner side need to be tapered?
 
Re: 1974 Commando 850 Dunstall build.

The outside of the nut sleeve needs to be sanded or filed (it takes very little to get it right) to fit into the rotor hole.

bwolfie's sleeve looks too long as if it might dispace the rotor key. ought to check that...
 
Re: 1974 Commando 850 Dunstall build.

Read earlier in the post. I am using a 40mm belt drive, I need a 10mm longer nut for the rotor.
 
Re: 1974 Commando 850 Dunstall build.

Finished up my spindle spacers, assembled the head and installed it today. Motor is whole again. It's only been 6 years since it last ran and blew up. Let's hope it goes better this time. Lots more attention to detail this time. All the oil lines are on, carbs mounted, and cables ran. Still need some rearsets and a few small parts. Sold a seat today, so I can afford the small parts. Hopefully next week I can try to fire it up.
 
Re: 1974 Commando 850 Dunstall build.

bwolfie said:
Finished up my spindle spacers, assembled the head and installed it today. Motor is whole again. It's only been 6 years since it last ran and blew up. Let's hope it goes better this time. Lots more attention to detail this time. All the oil lines are on, carbs mounted, and cables ran. Still need some rearsets and a few small parts. Sold a seat today, so I can afford the small parts. Hopefully next week I can try to fire it up.
Click to expand...

When I made mine I used off the shelf bronze bushes and just parted them off to the right length, saved buying more material than I needed and was pretty quick to do.
 
Re: 1974 Commando 850 Dunstall build.

I purchased a chunk of bronze, and parted off what I needed. Now I have extra for other projects, 2 more commando motors for now.
 
Re: 1974 Commando 850 Dunstall build.

Finally started fitting the fairing. I have avoided it 3 other times. I guess I will actually do it this time. So far the bigest part of this build. Here is where I am at right now.
Now going custom with alloy bodywork!!

Now going custom with alloy bodywork!!

Now going custom with alloy bodywork!!

Now going custom with alloy bodywork!!
 
Re: 1974 Commando 850 Dunstall build.

Very Very nice, indeed! You and I are going to basically have twin bikes. The way I see it, someone's gotta carry the flag. :wink:
 
Re: 1974 Commando 850 Dunstall build.

Very, very cool bwolfie ! Is that motor all together and ready to fire up ? Also, what silver paint did you use on the cylinder barrell ... looks cool. 8)
 
Re: 1974 Commando 850 Dunstall build.

I haven't seen any other dunstall'ed, except on here. And as much as people bash Dunstall stuff, it makes me want to do it eaven more. Mine's an 850. As for the paint it's duplicolor Engine high heat stuff. I've used it before with good results. I'm not going to powder coat another engine again. I have the engine ready to fire sans wiring an ignition. But I have a dilema. If I service the bike with fluids I have to take it out of the basment and into the garage, but I want to work on it this winter and finish it up. So It might not run until spring.
 
Re: 1974 Commando 850 Dunstall build.

What it is, is that the average person doesn't like the Dunstall SEAT. It's an acquired taste (I've acquired it).

The GOOD thing about it is that you can carry a pillion rider.
 
Re: 1974 Commando 850 Dunstall build.

Did I read that you were building, or had built, your own centerstand for the 2-1-2 ? I'd be interested in seeing that and knowing how it mounts.
 
Re: 1974 Commando 850 Dunstall build.

cmessenk, make that triplets as I also have one under restoration, although thus far I have only built the engine and a few other ancillary components and collected most of th parts, however once I finish off one or two other bikes in my workshop I will start in earnest. I was planning on having a standard Dunstall seat and also a single seat that I could swap as required. I might have to shorten the rear loop a bit, which is OK as it is already bent and butchered with welds for some touring luggage. I'm still unsure whether to go with a drum or disc front end. I have a Triumph Twin leading shoe backing plate which will fit the Norton hub, but has a bit more available surface area on the brake shoes and will look fairly unique once I have modified it appropriately. My other option is a Norvil production racer disc with a larger caliper. I would of course love the Dunstall twin disc set-up, I gather they are rather inefficient although they do look the part. This post has been helpful and I look forward to posting some photos of my own in due course.
 
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