Nater_Potater said:
A quick bit of math shows the trail decreasing about 1/8" for every 1/2" decrease in rear wheel rolling radius. A 1/4" drop of the front forks to increase the trail helped plant the front end of the BSA B50MX when flat-tracking, so I can see where that could be felt at speed on the tarmac.
hobot said:
A real investigator would switch wheels from one MK3 to the other to see what happens to make sense of it.
Yeah, Phil; listen to Steve! You have the perfect troubleshooting tool in front of you, and yet, you'd rather throw money at it. What's with you, man? I'll PM my Paypal account to you. Send me your extra cash, and I'll get back to you with my findings.
Nathan
I have learnt in the past, that what you don't spend of your money on Nortons, women will spend it for you on anything BUT Nortons. It is a race to the bottom.
In any case, why bother? I want a 19" rear wheel regardless. Fitting 3.60 front tyres to both bikes will be most interesting. With already knife edge steering, I can imagine how the 3.60 up front will feel. 4.10's removed will become spare rears, no wastage here at Mittagong Norton.
hobot mentions something about too soft a head steady. Nothing up there much adjustable beyond ensuring no slop in bearings. But I guess could be pinched up a tad to see if any difference. So Roadster handles best of the two, but slop in the gear change needs attention as primary case bush appears worn. Roadster clutch action is typical "spring release" in feel whereas Fastback is lighter and more progressive, same with front brake. These variations make for a lot of fun working to equal one with the other. The great thing with having two Commandos is that down time on either does not leave you without a Norton to ride. I couldn't go a week without a ride on a Commando. Life would be miserable indeed. The up and coming super charger project will be a whole new world again and I have already spoken to Jim Comstock about this. Jim is building a strong billet engine and plans to work on an upgraded transmission as well. The result will be very interesting with regards to blowing the engine. The downside will be the requirement to renovate every room in the house. One new Norton equals one new room renovation in the ratio of 1:3 money wise. One super charger equals one whole house, I am told!
Nortons are a very expensive past time. The upgrade addiction is shockingly expensive.
Phil