Gearbox Sprocket Lockwasher Screw

marshg246

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I've finished rebuilding a Commando gearbox except for the screw that secures the sprocket lockwasher. I know the screws I'm trying are good because they screw into other sprockets I have. I cannot get the screw started and both holes look too small. This is a new sprocket, but I have no idea where I got it - its not marked like AN marks them. It is 19T and has a 19 stamped in the back and that's the only marking. Anyone seen this before and know what threads it takes? BTW:
1) A 2BA tap won't start either.
2) I've rebuilt many Commando gearboxes and have never had this problem.
 
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Thanks for the warning. Now it's not the 19 tooth you're protecting the customer from? Because that is a ticket waiting to happen (ask me how I know!).
 
Got a ticket the same day I had the pleasure of seeing the look of surprise on the Corvette owner's face at the next stoplight. A 19 tooth sprocket was on the first Commando I ever owned - now I'm older, wiser, and 21 toothed!
 
Got a ticket the same day I had the pleasure of seeing the look of surprise on the Corvette owner's face at the next stoplight. A 19 tooth sprocket was on the first Commando I ever owned - now I'm older, wiser, and 21 toothed!
The 19T was part of the Combat spec; designed, no doubt for exactly this scenario :cool:

A friend commented a few years ago that folks didn't believe him when he discussed Combat performance, and he took great pleasure in demonstrating the fact.
I'm running a 19T on my '70 Roadster and it's great on my local rural roads, but not so great on the motorway.
 
Yep, i have a ‘72 Combat with what I learned was a 19T front sprocket….knew 100% of nothing when I got it 🙄. But boy did it shift….now run 21 T front and 40 T rear ( swap for a 42T when touring)….not sure if wiser but a tad older !
 
Yep, i have a ‘72 Combat with what I learned was a 19T front sprocket….knew 100% of nothing when I got it 🙄. But boy did it shift….now run 21 T front and 40 T rear ( swap for a 42T when touring)….not sure if wiser but a tad older !
Out of interest, what rear hub set up are you using ?
 
Got a ticket the same day I had the pleasure of seeing the look of surprise on the Corvette owner's face at the next stoplight. A 19 tooth sprocket was on the first Commando I ever owned - now I'm older, wiser, and 21 toothed!
unusually, Norton folks get more teeth as they get older.... and 2BA feature on Amals if you are stuck and have spare parts.
 
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Out of interest, what rear hub set up are you using ?
Hi , a bit hybrid : it’s an early GPZ 900 3-spoke wheel n hub assembly, suitably machined to retain Cush drive, disc brake etc. Got two sprockets from US of A ( 40 & 42 teeth I. 7075T6). Allowed a 120/18 rear as per Norman White’s recommendation.
 
Hi , a bit hybrid : it’s an early GPZ 900 3-spoke wheel n hub assembly, suitably machined to retain Cush drive, disc brake etc. Got two sprockets from US of A ( 40 & 42 teeth I. 7075T6). Allowed a 120/18 rear as per Norman White’s recommendation.
Interesting.
What you running in the front ?
 
Is a 19T good on the front of a Combat? I think so because the Combat engine equipped bike is a little sluggish at lower RPM with a 21T. The 19T limits the top end to 100mph at 6500 rpm whereas the 21T is 111mph as 6500 rpm. I build mostly Combats because that's what people ask me for, and those people still want to go strongly when they twist the throttle at low rpms. Anyone on US roads clocked doing 100 may not just get a ticket but may end up in jail with a reckless driving charge.

I sat in a Fairfax county, VA court one day for 6 hours. I was the only winner in those six hours. Everyone with a first offense of reckless driving got 1 year in jail and a $2500 fine + court costs, and you lost your license for a year (more in a minute). If a first timer and you did not have a lot of points on your license the judge would reduce the jail to 2 to 7 days with the rest on probation, and the fine was reduced somewhat depending on your demeanor. If you had a lawyer, you were allowed to report to jail on your own. If not, you got shackled and sat at the front of the courtroom until court was over and then proceeded to jail. If you had a lot of points or were not a first-time offender, you got a year in jail. $2500 fine + course costs, lost you license for a year, and were shackled immediately.

In VA, you can earn 5 good driver points to offset any ticket points. Once you reach 12 points the DMV pulls your license without court. Reckless driving is 12 points but is special in that first your good driver points are deleted. Speeding is 6. So if you been convicted on speeding (or just paid the fine) and then reckless, you have 18 points and you license is gone regardless. If only the DMV is involved you can start the begging process of getting you license back after the one year expires. Taking a DMV sanctioned 8-hour course that you pay for will get one point off your license once its all processed. If that gets you under 12 points, you can get your license back. If not, you have to wait until the points expire.

Also the judge can strip your license of the extra certifications (Motorcycle, Commercial, etc.) so once you get your license back, you must start over to get the certifications.

Now in the southern little VA counties if can be different. My wife got a reckless for 80 in a 55 in middle VA (4-lane divided highway with no traffic on a Sunday afternoon). We got a lawyer for $2500. The court only had three cases that day. Our lawyer talked to the prosecutor and since she had 5 good driver points, they agree to reduce the charge to 15 over speeding which is also 12 points but would not trigger the DMV since the good points took her down to 7. The judge accepted it but was still hard on her. The court took her physical license (not the DMV, thankfully). To get it back she had to pay a $2500 fine + court costs and prove that she took the 8-hour course by taking the physical "diploma" to the court in person (100 miles each way). So, the total cost was over $6000 and she still lost her license for about a month. Then she had to drive very carefully for over a year because a simple speeding would have caused the DMV to pull her license for a year.

I've only ever had two tickets and beat them both in court. Even so, it's expensive to lose a day of work and spend hours figuring out how to defend yourself.

The first one was a class-one misdemeanor which carries a year in jail and a minimum $2500 fine and in my case the likely loss of my security clearances. I proved that I didn't do the crime I was accused of so I won that one.

The second was a small 3-point moving violation written by a stupid motorcycle cop in 2011 - this is when I say in the courtroom for six hours until my case was called. Not only did I do nothing wrong he cited the specific VA traffic code I supposedly violated. The code had nothing to do with his description of the violation. He was stupid because he and his partner abruptly stopped in an intersection with no police lights. I was coming to the intersection in my car on the crossroad. Had he not stopped I would not have needed to slow down to go through the unmarked intersection (I was doing about 25mph). Since he did, I had to stop quickly but did not enter the intersection. Really stupid because he was blocking the view of his partner and he turned his head to talk to the partner even before I braked! His description of the violation was that turning into the road I was on from the highway was not allowed - he was wrong. When the judge said case dismissed, I was not happy and told him he need to say not guilty for the record - he did. Then I asked to make a statement for the record which he allowed (surprise). I explained that I had been riding since 1968 and what the officer did was one of the stupidest things I had ever seen done on a motorcycle and then recounted what the office did and recommend a reckless driving charge for him since I did not have the power to charge him myself. The judge said he wouldn't do that but looked at the officer and told he better never hear another story about ANY motorcycle cops in his county being so stupid - the cop was the top ranked motorcycle cop in Fairfax county!
 
Interesting.
What you running in the front ?
18” Harris 3 spoke Dymag ( original !) from an RG500 race bike. Longer story : given it by a mate who was an IOM racer ; alway wanted to use it on the Norton as a rear wheel with cush drive. Couldn’t quite do it so looked to match 3 spokes and found GPZ.
Next step : alloy swing arm….
 
18” Harris 3 spoke Dymag ( original !) from an RG500 race bike. Longer story : given it by a mate who was an IOM racer ; alway wanted to use it on the Norton as a rear wheel with cush drive. Couldn’t quite do it so looked to match 3 spokes and found GPZ.
Next step : alloy swing arm….
Sounds cool!

But… where are the pictures…?!?
 
Is a 19T good on the front of a Combat? I think so because the Combat engine equipped bike is a little sluggish at lower RPM with a 21T. The 19T limits the top end to 100mph at 6500 rpm whereas the 21T is 111mph as 6500 rpm. I build mostly Combats because that's what people ask me for, and those people still want to go strongly when they twist the throttle at low rpms. Anyone on US roads clocked doing 100 may not just get a ticket but may end up in jail with a reckless driving charge.

For the full Combat experience? absolutely!
Since they really come alive over 5k, the 19T works very well.
How many owners actually ride them like this is arguably more to the point.
Bottom end power isn't great on Combat spec motors, and it isn't what they were all about - more like 850 territory IMHO.

There's no such thing as 'good' points on a licence in the UK, but I picked up a ban for 105 on the motorway once - a long time ago.
It was for 3 weeks, and when my licence was returned, all my previous misdemeanours had been deleted!
I spoke to my insurers and they informed me that my premium was reducing due to a clean licence, and when I reiterated I'd just completed a speeding ban, I was told they don't recognise them! If it had been DUI, or dangerous driving I would have been taken to the cleaners!

Getting prison time for driving offences in the UK is rare, and generally only when a fatality is involved.
 
Getting prison time for driving offences in the UK is rare, and generally only when a fatality is involved.
The things I described are misdemeanors in most if not all states in the US. The jail time is generally in a county jail, not a prison. Depending on the state, when a fatality is involved, it will be worse to way worse and the result can easily be prison time. Drink or do drugs, drive, and kill someone:

The consequences of a Virginia manslaughter conviction depend on the circumstances. But the possible penalties are:
  • Vehicular manslaughter. Vehicular manslaughter is a class 5 felony. Convicted drivers generally face up to ten years in prison and a maximum of $2,500 in fines.
  • Aggravated vehicular manslaughter. Enhanced penalties apply to vehicular manslaughter offenses where the driver's conduct was "so gross, wanton and culpable as to show a reckless disregard for human life." Aggravated vehicular manslaughter (also called "aggravated involuntary manslaughter") carries one to 20 years in prison and up to $2,500 in fines.
All drivers convicted of vehicular manslaughter are looking at permanent license revocation, though reinstatement is possible after five years.
 
A friend of mine has multiple DUIs and lost his license forever.
He could switch to a M.A.D . or a skateboard or an e- bike or a bicycle . If I know I'm going out involving drinking I leave the vehicle at home and take Uber , taxi , or Transit . Like in a few hours I head downtown to Drom Taberna Tavern for the Swing Dancing show . Transit . You always have responsible choices .
 
Down my way a biker and his wife got snuffed by a DWI at a T. Not his first bust for DWI. He still had a license. In "immigration" areas plenty of drivers have no license. I was busted once for impaired in my callow
youth. It was more common back then but it is inexcusable.
As for Virginian draconian driving penalties, it is a very good reason simply to not live there. If you work in DC not hard to live elsewhere nearby. Use your feet in self defense.
 
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