Triumphrat

Trophy Tony · 02-20-2008

I'm looking to re-gear my Trophy (1992 1200) to give me lower revs on the highway. I haven't checked the front sprocket..... i think the rear one is 45 teeth. At the moment, it sits on about 4,500 rpm at 110kph. With the amount of torque and power it has, it could travel very comfortably all day at less than 4,000rpm, and save a little fuel as well. I travel 100 kilometres each day for work on the highway. I'm curious as to what revs others are doing at highway speeds. I'm considering going one tooth bigger on the front, which "should" give me about 500rpm less on the tacho. I have only had the bike for a week....... and i love the way it pulls like a teenager with a Playboy Mag!! so i'm sure it could handle one or even 2 teeth bigger on the front.

Netmaker · 02-20-2008

My records show the standard gearing ratios records for the 1200 are;
1992 to 1996 = 18 front 45 rear = 2.5 ratio
1997 / 1999 = 18 / 42 = 2.33
2000 = 18 / 40 = 2.22
2001 / 2002 = 19 / 40 = 2.10
2003 = 18 / 40 = 2.22
Triumph sell 17 / 18 / 19 fronts and 40 to 48 rears as standard items.
I currently run the 19 / 40 on my 2001 model Trophy 1200, as I am currently residing in west missouri ( flat country ) but have used several other ratios, around the 2.5 to 2.7 final drive ratio, for riding in South and North carolina mountain areas.
Around Scone the 19 / 40 should be fine but a ride up the putty road would need a 17 / 40 for more twisty fun.

ervdrvr1 · 02-20-2008

Tony,
19 front(biggest that will fit, I think) and 40 rear(not sure if anyone makes one smaller) will give you appx 4000rpm's at appx 110kph. Fuel mileage makes more of a differance depending on how hard you twist your wrist. This is the setup I have on mine('02 1200) and average appx 36-38 mpg(US) 2-up loaded and appx 40-42 mpg(US) solo. That's appx 60% highway, 40% backroad. Best I've gotten is appx 46 mpg(US) solo, 90% highway, speeds under 70 mph for 800 miles.

Erv
Deep in the Heart of Texas!!

Trophy4 · 02-20-2008

When I replaced chain/sprockets on my '96 T-1200, I went with an 18/40 combination. This lets me run just under 4500rpm (by the tach) @ 70mph. Gas mileage @ that speed is about 38mpg US. I'm satisfied with the "grunt" off the line, even 2-up. I had a 19/44 combination on it (not stock), which gave me an awesome start, but gas mileage was woefully bad! I was glad when I finally had enough miles on the combination to justify the $$ for new sprockets/chains.

YMMV

Trophy Tony · 02-20-2008

as i said, mine currently does 110kph (approx 70mph) at 4,500rpm. Getting it to around 4,000 would be nice. There is some hilly country here, but not overly steep. I only ride one up (my wife hates bikes) and i'm not a demon in the twisties, i take it relatively easy. At the moment i am getting 6 litres per 100 kilometres riding mostly highway with a little traffic. That equates to 1.5 gallons for 62 miles. Not too bad considering i am a big boy.

flybiker251 · 02-20-2008

I haven't had my sprockets off to check but everyone seems to have a higher rpm at speed than I do. I have an '03 1200 and show approx. 3500 rpm's at an indicated 70mph. The bike has plenty of kick off the line and goes like a demon when pushed. my mileage has been avg. 36 except for the last two tanks. I installed a set of Staintunes and my mileage now is 39 mpg. Is this realistic or am I just dreaming? I know a freer flow should help the mileage but this seems excessive. I know I am pushing it as hard as ever because I want to listen to the song coming from the exhausts. I appologize for hijacking this thread but these new exhausts have let a cat out of its cage. When I used to open the throttle it would take some time for the engine to wind up almost like a rubber band and then spring forward. Now it goes like a bat our of h--- from the get go. unbelievable difference. Now we return you to your regularly scheduled program.
Flybiker

Trophy4 · 02-20-2008

Fly, I'll look closer at my tach the next time the bike's out. I may have been thinking RPM's before the change. According to the message above, your stock gearing should be exactly the same as mine. Tho' I think my '96 has different carbs than your '03, and that, too, could be some of the difference in gas mileage quoted.

YMMV

Trophy Tony · 02-21-2008

Quote:

Originally Posted by flybiker251

I have an '03 1200 and show approx. 3500 rpm's at an indicated 70mph.

I would be real happy to be riding around at that rpm..... Like i said, mine gets about 6 litres per 100 kilometres, my kwaka turbo (738cc) gets about 8

ervdrvr1 · 02-21-2008

Just a note. Triumph's speedo's are notoriously known for being wrong. From what I've seen, most are 4-6 mph's off. My '02 runs 64mph at an indicated 70 on the speedo. My '96 T-Bird ran 65mph at an indicated 70(both verified by GPS). I havn't seen any over, just under. From what I gather, the DOT gives a 10% error. If not over that, Triumph won't replace the Speedo(yes, I asked my dealer). The difference increases as speed increases. Flybiker, you may have been a little rich with the stock mufflers so now with the Staintunes you may be spot-on. Mine's bone stock and pulls hard and even right from idle to redline. Tony, 6 l's per 100 km's = 41mpg's here in the US. About normal for solo easy riding with your gears. A 19/40 combo should get you 42-44 mpg's average, maybe a little more if you keep the speeds down below 105kph.

Erv
Deep in the Heart of Texas!!

Jeff-G · 02-21-2008

Hi Tony,
I have an '02 1200 with about 15k on the clock. I recently changed from the stock 19/40 set up to an 18/43 set. Fuel mileage dropped from 40-42 down to 38-40. When riding 2 up and loaded its much easier to pull out. The biggest change for me was that when riding in traffic at normal speeds, 45 -65 mph, in top gear I had to shift down one or two gears to get the engine up on its power band. Now just a twist of the wrist at those speeds and she cuts through traffic like a hot knife through butter. Roll on time from 60-100 is only about 4-5 seconds in top gear, and that's hauling my 6'-3" , 300 lbs butt. If I did more highway riding or lived where it was flatter I may have gone to an 18/40 set to split the difference. A little better mileage and a little better acceleration. It seems that I use all the gears now. Before I would catch myself riding in fourth or fifth instead of top gear. Sixth gear was really only for 70+ mph. ( But, 120 mph in top gear and still pulling hard was fun!)
Good luck, ride safe, Jeff