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Old 07-26-2010, 03:24 AM   #175 (permalink)
alvaro84
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Join Date: Jul 2010
Location: Fehérvárcsurgó, Hungary
Posts: 384

Teresa - '04 BMW F650CS
Motorcycle
90 day: 80.53 mpg (US)

The YARDIS - '99 Toyota Yaris 1.0
90 day: 59.52 mpg (US)
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Quote:
Originally Posted by ASV View Post
yes you can mod Teresa's gear ratios you can buy a shorter or wider drive belt
Ten mil shorter or one mil wider will make a notable difference in transmission range
And more slider weight will drop rpm

if its A GY6 or clone
I think it's a different type of belt you're talking about - I was a bit confused about this length and width thing, but I think that must be about a CVT belt. Teresa doesn't have anything like that but a toothed belt (like Harleys), which works the same way as a chain, it just doesn't need regular lubing
I wasn't clear enough, sorry.

And the problem is that a taller ratio wouldn't be useful anywhere except freeways.
- The present 5th can't be used under ~70km/h (44mph) at all so making it longer would just increase my overall speed (more aero drag);
- and make me go in 3rd in town instead of 4th (4th feels lugging down from ~50km/h (31mph) by the speedo, now I cruise a bit over it but under 60 (37mph) in 4th and stay under 3000rpm - if I don't P&G, of course);
- also would lose the ability to cruise in 2nd in the 30km/h zones (19mph), would have to fallback to the still less favorable 1st gear;
- which 1st would be ridiculously long for a 1st

So as long as I can't build a 6th, overdrive gear for long freeway trips (and I can't that's definitely ninja level for me ) I wouldn't poke with these ratios.

Ciliegia, on the contrary, has quite short gears, 5th is usable from ~40km/h (25mph) on level road (and revs 7,000 at 100km/h(62mph)), so making these gears a bit taller won't hurt.
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