Some pics of my "winter" project and questions about them.

Hi All;
The pics below are of my 70 Fastback. I have a few questions about what you see. I am not very knowledgeable of the Norton so some may seem elementary so please excuse my lack of knowledge. You folks have been great helping me in the recent past. Thanks for that and thanks in advance for the help in future.
Cheers, Frank



Here she is, I am taking things apart, cleaning them and either ordering parts or putting them back together. First question, did the 70 Fastback come with a disc up front?



This one is for Comnoz (Jim). Here is the pic I promised. I assume your breather won't work due to that frame member just behind the sump bolt. Drat. I understand there were changes to the frame around this time. Is this the older version?



This shows the left "rear set", the peg rubber says Dunstall, the exhaust can is a Dunstall...who made the AL plate that the pegs etc. are attached to? Dunstall?



This shows the right "rear set", same as the other side as to bits...just don't know anything about the AL hanger.
I've got lots more but I will post them as the same title with "2" etc. f

Re: Some pics of my "winter" project and questions about the

The front disc brake was first available in 1972.

The later frames have the centerstand mounted to the cradle.

Those rear sets are Dunstall crossovers.

Let me know if you want to sell them, i'd be interested. I made a set of them years ago.

Re: Some pics of my "winter" project and questions about the

Yes the rear set mount plates are patterned off Dunstall ones but the name Dunstall was cast into his plates. The spacers were also cast into his plates. When I broke mine in a crash I just traced the pattern on some plate and copied them as well.

Re: Some pics of my "winter" project and questions about the

bwolfie said:

The front disc brake was first available in 1972.

The later frames have the centerstand mounted to the cradle.

Those rear sets are Dunstall crossovers.

Let me know if you want to sell them, i'd be interested. I made a set of them years ago.

Click to expand...

Thanks Wolfie.
So it looks like somebody put the disc brake system on the bike. It has an older Boyer ignition as well.
The center stand doesn't work, both wheels are firmly on the ground. I haven't evaluated it yet but welding some rounded feet on it might fix it.
I read that they moved that frame cross brace forward. It is painful to get at the sump bolt easily. Worse, I can't use Comnoz' sump pressure relief system.

The bike came with the rear-sets and I actually like them better than stock as all of my lumbar vertebra are compressed (Nam and Helicopters) and I have to have my feet under my butt for support.
Cheers, Frank

Re: Some pics of my "winter" project and questions about the

You are right, my sump plug breather will not fit with that frame design. Jim

Re: Some pics of my "winter" project and questions about the

RennieK said:

Yes the rear set mount plates are patterned off Dunstall ones but the name Dunstall was cast into his plates. The spacers were also cast into his plates. When I broke mine in a crash I just traced the pattern on some plate and copied them as well.

Click to expand...

Thanks Rennie.

I can see the plates being relatively easy to manufacture but what about the linkages etc.?

I assume the Dunstall name would have been very visible as it is on the mufflers.

Cheers, Frank

Re: Some pics of my "winter" project and questions about the

The plates you have look to be traced from Dunstall plates however the Dunstall plates are solid with NO cut outs in them. The name was prominently cast in in large raised letters along the top slope midway. The rest of the parts were not marked on any sets I've seen. Your controls look a little different though as your shift lever is a tapered tube whereas the Dunstall was regular 1/2" pipe or tubing. The link rod and gear box arm are typically mounted upwards to preserve the 1 up 3 down shift pattern. The way yours goes downward will reverse the shift pattern to 1 down 3 up shifting.




You can see the added tang for the cable on your shifter side, don't know what that's about. It looks like someone tried to set it up for a right side brake system at one time. Also you have a cut out with an electrical something there????

The left side Dunstall set up has a 2nd small plate mounted on the main plate and it has a brake light switch mount and the brake cable support tang on it. In this photo you can see this second plate mounted to a regular Z plate.



Lets not forget that Dunstall manufactured various types of these for different bikes over about a 10 year period. I have 2 sets of Dunstall Norton sets which both look like my photos. I think someone traced the Dunstall plates you have but used other makes of components on them. I like your tapered shifter arm, it should be stronger.

I'm trying to get the photos to work....

Re: Some pics of my "winter" project and questions about the

Nice mix and match '70. Three styles of Dunstall long megaphones, one had last section was straight wall cylinder 4" long, others slightly less end section. All had outer cone impressed with Dunstall logo. If the rings are normally sealing to bores then an inline PCV up on frame near tank area should work to keep case pressure low enough leaks are sucked back in, though just not as hard as a well placed reed valve.

Re: Some pics of my "winter" project and questions about the

Hi

Copy Dunstal plates & a cross over shaft for left hand gearchange right hand brake. Not badly done at all.
Nice project.

Chris

Re: Some pics of my "winter" project and questions about the

Frank,
Nicw looking project. Where are you at these days?

Chuck Ridenour
Enterprise, AL

Formerly Assasin 16

Re: Some pics of my "winter" project and questions about the

RennieK said:

Yes the rear set mount plates are patterned off Dunstall ones but the name Dunstall was cast into his plates. The spacers were also cast into his plates. When I broke mine in a crash I just traced the pattern on some plate and copied them as well.

Click to expand...

I went out and looked closer at the plates Rennie. They are stamped Dunstall on the back upper side of both. The back-side spacers are cast as part of the plates also. The cutouts may or may not be original. The outside edge of the cutout is chamfered but the inside edge is not. Opinions anyone? :idea:

Re: Some pics of my "winter" project and questions about the

RennieK said:

You can see the added tang for the cable on your shifter side, don't know what that's about. It looks like someone tried to set it up for a right side brake system at one time. Also you have a cut out with an electrical something there????

Rennie, it is a left side shifter. That black elcectrical switch on the right side is the rear brake light switch. The shifter rod from the left side goes directly across the back of the engine, comes out and attaches to the shifter rod. f




Lets not forget that Dunstall manufactured various types of these for different bikes over about a 10 year period. I have 2 sets of Dunstall Norton sets which both look like my photos. I think someone traced the Dunstall plates you have but used other makes of components on them. I like your tapered shifter arm, it should be stronger.

I posted that I looked closer at the plates today and the name Dunstall is stamped on the reverse side of the plate on the top arm above the cutout. The spacers are cast into the backside of the plates also. f

I'm trying to get the photos to work....

Click to expand...

Re: Some pics of my "winter" project and questions about the

Saber13 said:

Frank,
Nicw looking project. Where are you at these days?

Chuck Ridenour
Enterprise, AL

Formerly Assasin 16

Click to expand...

Hi Chuck, great to hear from you. I retired from the Army in 96. Moved out to Mesa, AZ, to work at McDonnell-Douglas (now Boeing). Spent two years in England running the Mac D Engineering and Production office. Returned to Mesa and worked various Apache programs (USA, UK and Israel) for 13 more and retired from Boeing almost 3 years ago. Built my shop, gathered up all my bikes and here I am. Cheers, Frank

Re: Some pics of my "winter" project and questions about the

hobot said:

Nice mix and match '70. Three styles of Dunstall long megaphones, one had last section was straight wall cylinder 4" long, others slightly less end section. All had outer cone impressed with Dunstall logo. If the rings are normally sealing to bores then an inline PCV up on frame near tank area should work to keep case pressure low enough leaks are sucked back in, though just not as hard as a well placed reed valve.

Hobot;
Here are some pics of mine and measurements:

Diameter at end of megaphone is 3.25"
Length is 27"
Outside diameter of the headpipe is 1.4"
Inside diameter of the muffler can't be determined since they are clamped together but slightly larger than the above.
Cheers, Frank

Click to expand...

Re: Some pics of my "winter" project and questions about the

Chris said:

Hi

Copy Dunstal plates & a cross over shaft for left hand gearchange right hand brake. Not badly done at all.
Nice project.

Chris

Click to expand...

OK now I get it. It would be a good idea to consult a later Dunstall catalog to see what was available for 75 when requirements were for rt brake left shift. Maybe this is it.

There is another cut out plate here: I assumed it was modded by the owner but maybe not?

dunstalliizer-commando-she-will-sleep-along-t17498.html

Re: Some pics of my "winter" project and questions about the

Gorgeous sexy set of Dunstall 'long dongs'. I can't keep anything that nice soon as I leave my garage pad but savor those that can. The rearset looks about identical to my John Tinkle set down to the peg rubber pads shape but with Tinkle logo instead. You can not fit the gear pointer with the over head style of shifter linkage. If ya install the brake peg mount correctly wrongly, you can end up with a pure straight cable run to the drum lever.

Re: Some pics of my "winter" project and questions about the

hobot said:

Gorgeous sexy set of Dunstall 'long dongs'. I can't keep anything that nice soon as I leave my garage pad but savor those that can. The rearset looks about identical to my John Tinkle set down to the peg rubber pads shape but with Tinkle logo instead. You can not fit the gear pointer with the over head style of shifter linkage.


If ya install the brake peg mount correctly wrongly, you can end up with a pure straight cable run to the drum lever.

Click to expand...

Hobot, you should be an American English Logic teacher. I think I understand but I'll have to look at it from the drum lever to the pedal attachment to figure it out.
By this time of day my brain is mush (some would say it is that way all the time). I need a beer. Cheers, F :?