'72 Norton bogs down after less than 10 miles - need ideas!

Re: '72 Norton bogs down after less than 10 miles - need ide

hobot said:

Might consider eliminating this possible fueling factor I've run into on Combats but solved by BSA wisdom.

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hobot
Just as well I'm in here to keep an eye on you guys, PJ might think Fast Eddie is getting somewhat remote and obscure, but you will confuse him completely!

The machine was blessed with a Mikuni 34VM before he purchased it. There ain't no Amals left to cause problems. Like wisdom teeth, they were sensibly removed.

How do I know? Just a hunch!!

Phil

Re: '72 Norton bogs down after less than 10 miles - need ide

The best way to sort this kind of issue is to swap parts over one at a time from a handy pool of known good parts

I keep an old analogue Boyer and a single Mk1 amal carb set aside for times like this.

Obviously relies on have parts around or a mate with a good running machine, so maybe not the best advice in the world

Rich

Re: '72 Norton bogs down after less than 10 miles - need ide

Might be a case of vampire blood in tank showing up then. Worn down cam lobe would occur to me but for report it runs fine for a time. Might investigate the Miki enricher staying off during road operation.

Re: '72 Norton bogs down after less than 10 miles - need ide

Love the advice gents! After getting smoked at work last night, I had to crash for a bit. Now, if I can finish the mandatory mundane tasks (mowing the freaking lawn, etc.) before it starts to rain, I'll be able to get back to the Norton. I did pick up a new main (230) and pilot (40) jet that I'll swap out, and much to my surprise the new Power Arc EI system was just delivered, so I'll take off the Boyer and start putting the PA in. Looks like a fairly simple task (I know, famous last words! ). Another work day tomorrow, so I won't be able to test her out until Monday, as it looks to be pretty wet the rest of the day, and none of my bikes or cars (yes, I'm also afflicted with a British car illness! ) have ever seen a single drop of water - ever. Hopefully Monday I'll be able to give you folks an update on how the testing goings. I'll keep you posted.

PJ

Re: '72 Norton bogs down after less than 10 miles - need ide

Just remember the golden rule to fault tracing here PJ. One change at a time.

Re: '72 Norton bogs down after less than 10 miles - need ide

Rich_j said:

The best way to sort this kind of issue is to swap parts over one at a time from a handy pool of known good parts

I keep an old analogue Boyer and a single Mk1 amal carb set aside for times like this.

Obviously relies on have parts around or a mate with a good running machine, so maybe not the best advice in the world

Rich

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But Rich
He just bought the machine, how would he have parts hanging around? Not likely a Norton mate either who he can pinch parts off left right and centre.

It's electrical!!
I'm betting on it, sure as eggs.
I'll wager $200 on it with anyone (except PJ, he might be tempted to tell fibbies).
The loser pays his money to Jerry.
Any takers??

Phil

Re: '72 Norton bogs down after less than 10 miles - need ide

phil yates said:

It's electrical!!
I'm betting on it, sure as eggs.
I'll wager $200 on it with anyone (except PJ, he might be tempted to tell fibbies).
The loser pays his money to Jerry.
Any takers??

Phil

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You're always at the pub, aren't you Phil, especially when you're not.

Re: '72 Norton bogs down after less than 10 miles - need ide

pete.v said:

phil yates said:

It's electrical!!
I'm betting on it, sure as eggs.
I'll wager $200 on it with anyone (except PJ, he might be tempted to tell fibbies).
The loser pays his money to Jerry.
Any takers??

Phil

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You're always at the pub, aren't you Phil, especially when you're not.

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Pete
You've been trying to guess who or what I am since I joined the forum so long ago.
It's 0800hrs here. I am at home, as always. Two beers a night at the pub is a very low Ozzie standard. It takes me 45 minutes.

I'm deadly serious.
$200 on the table against anyone.
Loser's money goes to Jerry to help run the forum.
Dig deep Pete, though I'd rather see a non VIP lose his money.

Phil

Re: '72 Norton bogs down after less than 10 miles - need ide

phil yates said:

[
Pete
You've been trying to guess who or what I am since I joined the forum so long ago.

Phil

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Yes, the longest 11 weeks of my forum life.

Re: '72 Norton bogs down after less than 10 miles - need ide

pete.v said:

phil yates said:

[
Pete
You've been trying to guess who or what I am since I joined the forum so long ago.

Phil

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Yes, the longest 11 weeks of my forum life.

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Well, you don't want to die quickly do you?
C'mon Pete, what's $200 to a combat jockey?
Cost ya that in sleeping pills, worrying what will explode next!

Phil

Re: '72 Norton bogs down after less than 10 miles - need ide

phil yates said:

Well, you don't want to die quickly do you?
C'mon Pete, what's $200 to a combat jockey?
Cost ya that in sleeping pills, worrying what will explode next!

Phil

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Ok, Phil, I'm going to one up you here. I'm going to say it's electrical OR fuel related. What do you think of that big guy? Now who's got the big dangly ones? Huh?

Do you think you could narrow your "electrical" theory down a little. I have already served my hypothesis earlier in the thread, stating either a charging issue or an excessive draw from a source yet to be determined. You, on the other hand, have offered a very broad idea base on what others have said.

Dude, cop some humility!

In addition, IMHO, the PowerArc, in terms of an improvement, is questionable at best.

Re: '72 Norton bogs down after less than 10 miles - need ide

pete.v said:

phil yates said:

Well, you don't want to die quickly do you?
C'mon Pete, what's $200 to a combat jockey?
Cost ya that in sleeping pills, worrying what will explode next!

Phil

Click to expand...

Ok, Phil, I'm going to one up you here. I'm going to say it's electrical OR fuel related. What do you think of that big guy? Now who's got the big dangly ones? Huh?

Do you think you could narrow your "electrical" theory down a little. I have already served my hypothesis earlier in the thread, stating either a charging issue or an excessive draw from a source yet to be determined. You, on the other hand, have offered a very broad idea base on what others have said.

Dude, cop some humility!

In addition, IMHO, the PowerArc, in terms of an improvement, is questionable at best.

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Electrical/Fuel/Engine Component related.
Pick one only. Or don't bet. Rules are simple.

From your suggestions above, sounds like you have already decided to join my team.
So, you'll have to start your own game of Two Up.
I can see Jerry getting quite wealthy out of this.
He might shut down the forum and take a well deserved holiday.

Would you like a separate forum posting game rules?
We could also whack the MkIII in there for you.
Keep ya shirt on buddy.
You told me you were having fun

Phil

Re: '72 Norton bogs down after less than 10 miles - need ide

Time to head for the early opener.
It's called "The Fridge", only 4 yards from here.
I'll think hard on poor PJ's dilemma. We were trying to help him solve his issue, after all.
I just thought a little money would help keep the forum running. A multi functional Norton remedy.
And we don't want the Triumph gods having the last laugh do we?
Not even a Japo rider would wish that upon us. But I admit, I do like early Triumphs.

After two hours at the early opener, I'm heading for church, being Sunday morning as it is.
I'll pray for you Pete. Believe me I will.

And god will help me help PJ. More than once I stood on the side of the road with my busted 72 combat.
Praying to god. He answered and gave me a MkIII. I am eternally thankful.

Phil

Re: '72 Norton bogs down after less than 10 miles - need ide

Evening Gents - being as I'm quite computer illiterate, it's taken me this long to figure out how to resize and post pics, but I think I finally got it. Figured I'd give you a visual of the subject of this thread and my current frustration. Again, I'll keep you posted on any progress.

PJ

Re: '72 Norton bogs down after less than 10 miles - need ide

PJ Martel said:

Evening Gents - being as I'm quite computer illiterate, it's taken me this long to figure out how to resize and post pics, but I think I finally got it. Figured I'd give you a visual of the subject of this thread and my current frustration. Again, I'll keep you posted on any progress.

PJ

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That's beautiful PJ.
Your issue will be resolved (probably easily when you nail it) and you will very much enjoy riding this very special machine.
I have more confidence knowing that than where the nasty gremlin is. But it will be simple I'm sure.
If you ever get a chance, try riding an Atlas and you will understand why the Norton gods smiled when they handed us the Commando. They knew they had buried the Triumph gods forever!!

Cheers
Phil

Re: '72 Norton bogs down after less than 10 miles - need ide

Rocker pipe oil feed ? Ignition details ?

Re: '72 Norton bogs down after less than 10 miles - need ide

CHECK OUT THE FUEL PIPE, IF YOU HAVE BEND IN THE RUBBER, It may appear to be fine, ie maintains it's COLD shape..But when heat gets at i,t the pipe folds and pinchs off the juice! Wrap a length of wire around the bends [like a spring] and try it. Remember the heat comming off the head is like a big heat gun! and will blow back onto the pipe..it doesn't have to be touching it.
By the way this as happened,it's not some silly suggestion :!: My mate had a GP carb on his Velo, it was a pig to start..so changed it for a Mikuni ,the feed was short and had a bend in the pipe..which appeared fine COLD! after a few miles the bike slowed ..very hot..the pipe had folded .

Re: '72 Norton bogs down after less than 10 miles - need ide

Another easy check would be to check the Volts of the battery (1HR ?) after finished for the day. Then check prior to start up the "next" time. That may be next day or next week but the battery must be within .02-3volts (guessing) and at least 12.7volts+

Do you run/ride with lights on??????

Im thinking battery wont hold a charge.....

Let the battery rest for a while and it will naturally build volts "a Bit" and recover enough to ride on after a short stop ????

BAsically im thinking the battery is disfunctional!!

Havivg said that im a electrical "Baffoon" as previously stated..

Re: '72 Norton bogs down after less than 10 miles - need ide

I'm not going to usurp PJ's rightful position to answer the suggestions.
But for my own verification I'll ask some questions:

"Rocker pipe oil feed ? Ignition details ?"

Rocker pipe oil feed??
What the……? How does this stop a motor after ten miles?
Ignition details?…..Read PJ's post. He told you.


Another easy check would be to check the Volts of the battery (1HR ?) after finished for the day. Then check prior to start up the "next" time. That may be next day or next week but the battery must be within .02-3volts (guessing) and at least 12.7volts+

Do you run/ride with lights on??????

Im thinking battery wont hold a charge.....

Let the battery rest for a while and it will naturally build volts "a Bit" and recover enough to ride on after a short stop ????

BAsically im thinking the battery is disfunctional!!

Havivg said that im a electrical "Baffoon" as previously stated..

The battery is good. PJ told you that.
Dysfunctional!!! ???
What is a dysfunctional battery?
It's good or it's bad. I think you might be dipping a toe into the psychology of batteries.
I'm backing electrics, but battery? Ridiculous!! Read the symptoms.
Electrical "buffoon"? Interesting comment. Did someone call you an electrical buffoon? Who was it??

Give PJ a break lads, he's an intelligent man and certainly doesn't need to be told what "free flowing fuel" from his fuel tank should look like. He's a Triumph restorer. I'm sure he knows his way around a motorcycle.

Read his posts first before asking him to repeat things he has already told you he has done. And what equipment is on the machine.

Phil

Re: '72 Norton bogs down after less than 10 miles - need ide

I had one that would run well for about 20 minutes then start acting up (missing, sputtering, dying, etc.).
it was the old Boyer black box going bad.