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I have ridden a few Guzzi, small and big block, and a Robin, but we’re just talking serious road bikes for this exercise. I find first gear on my current B1100 to be pretty darn large, but I thinking a few other Guzzi may be more, perhaps a Spot 1100??
I'm not familiar with the term 'interstate gear'. R3~
...... I find first gear on my current B1100 to be pretty darn large, ......
1987 lemans SE. Close ratio 5 speed has a stupid tall 1st gear.If I remember right, it made the SE almost a full second slower in the 1/4 mile vs the standard lemans.
Convert.85MPH in low gear. Won a few low gear races on that one!
The idea with the close ratio gear sets, typically having a tall first gear is that they are typically for racing, which means some things are meant to be sacrificed for the sake of performance, like a clutch. I used to race Vespas beck in the day, and a lot of them were geared tall to get the speed, but the key to that is to go revvy off the line at half clutch until things really kick-in. Hi revs will get it going, will of course toast the clutch sooner than normal, but that's how you use tall first gear in a racing scenario. I'm guessing the test done with the Le Mans SE vs the normal gearing was done taking off the line normally (not half clutch).
My V-7II , is turning 3,100 RPM at 50 miles/hr. in 6th gear . 5,000 RPM at 80 miles/hr. so the top speed at 6500 would be about 105 mph. Roebling3you say the V-7III is only spinning 3,000 at 60 mph ? so the down-hill , tail-wind top speed (6500 RPM) would be about 130 mph. ?I might need to trade bikes and go with the V7-III !
The tall first gear is nice on a road course, or roadway, which has some tight hairpins. Typically 2nd can be too tall for those turns, and 1st too short, which means the drive off of those hairpins is impacted. The taller 1st gear in the close-ratio box allows the rider to use the gear in hairpins for better drive on the exit.
?!? - I thought the 6-speed transmission and the final drive where the same on the II and III ??? Here's my notes, not sure what they tell us.V7 III4500 rpm = ~ the following (rounded off for easy remembering):30 (closer to 27) in 1st gear35 in 2nd gear50 (closer to 48) in 3rd gear60 in 4th gear70 (closer to 68) in 5th gear76 in 6th gearV7 I - 5-speedspeed vs rpm in top (5th gear)55 350060 380065 410070 440075 470080 4900So not apples-to-apples, and doesn't confirm the II vs III thing but:V7 I - 70-75 mph ~4400-4700 - 80 mph just under 5k.V7III - 76 = 4500 rpm (as opposed to 4700), so i'm guessing 80 mph is closer to 4700 rpm or a similar 200 or so rpm lower than the MK I.Two questions.1. How certain are you about 5k at 80 mph? (If I had to guess there's either speedo error involved in that or you're rounding up).2. What is say a CARC big-block or Tonti Big Block turning at 80 mph in top gear? It's been too long for me to remember.But I don't think the V7III is going to get you what you're looking for if what you're looking for is more grunt and less rpm at 80 mph.
So , the V-7III would hit 6,500 rpm at about 110mph , ... Same as the V-7II I'll just save my $$$ for a V-9 Roamer some day ! Do any of the big blocks have a 150mph/red-line --- weather they have the power to do it or not ... don't matter. That's what I would call an INTERSTATE GEAR. (75MPH @ 1/2 the rpm range)
Do any of the big blocks have a 150mph/red-line --- weather they have the power to do it or not ... don't matter.
Yes. All the Spine Frame bikes are "geared for" something over 150. None of them will pull it, though, in stock condition. Not enough power. The Sport 1100 and V11 Sport/LeMans can't pull past 7,000 rpm in top gear.