Triumphrat

wonderdog · 09-05-2006

Sunday was my first long run with the 18T sprocket so I checked my gas mileage. Usually in town I'm on reserve between 110-120 miles. On the road maybe 130+.
On my first tank Sunday I was becoming a bit concerned as nothing was open early on the roads being used. A station appeared finally and with 143 miles the tank was still not on reserve. It figured out to 55mpg. Speeds were mostly 60-65mph.
The second tank didn't get that low. I fueled up sooner but speed had picked up a bit, mostly between 65-70mph. MPG was 52.
The last tank had my "headed for the barn" interstate run on it and have not filled up yet. It will probably drop down to the low 40s.
I am happy happy happy with the mileage.

Dennis
:-D

kliff · 09-05-2006

Quote:

On 2006-09-05 09:44, wonderdog wrote:
Sunday was my first long run with the 18T sprocket so I checked my gas mileage. Usually in town I'm on reserve between 110-120 miles. On the road maybe 130+.
On my first tank Sunday I was becoming a bit concerned as nothing was open early on the roads being used. A station appeared finally and with 143 miles the tank was still not on reserve. It figured out to 55mpg. Speeds were mostly 60-65mph.
The second tank didn't get that low. I fueled up sooner but speed had picked up a bit, mostly between 65-70mph. MPG was 52.
The last tank had my "headed for the barn" interstate run on it and have not filled up yet. It will probably drop down to the low 40s.
I am happy happy happy with the mileage.

Dennis
:-D

Still running the 17t sprocket on mine, and having very similar results......mid 50's if in the 60mph range, low 50's, hi 40's if in the 65-70 range, and mid to low 40's if in the 75-80 range.
I weigh in at 270, Dirty Girl has only the AI mod done, and no windsheild.

jimmyc · 09-05-2006

I'm running my first real tank full of gas in mine. I've got the 19t on and can't wait to see the mileage. No performance mods on mine except for the baffolectomy. As for the 270 lb rider getting mid 50's at 60+mph. Your killing me here. Is it downhill with a tailwind to and from work for you? Geez!

As Napoleon Dynomite would say.... "Lucky!"

kliff · 09-05-2006

Quote:

On 2006-09-05 10:27, jimmyc wrote:
I'm running my first real tank full of gas in mine. I've got the 19t on and can't wait to see the mileage. No performance mods on mine except for the baffolectomy. As for the 270 lb rider getting mid 50's at 60+mph. Your killing me here. Is it downhill with a tailwind to and from work for you? Geez!

As Napoleon Dynomite would say.... "Lucky!"

Nope, it's the 17t sprocket......where a lighter rider benefits from a larger sprocket the OEM 17 keeps the gearing a tad lower, not requiring the engine to "work" as hard, even tho it is turning faster. At my weight, an 18t might work, but most assuredly a 19t would "cost" me in gas mileage, because to maintain a speed, or accelerate up to it, I would need significantly larger throttle opennings, with less manifold vacume= more fuel burned.......

Gearing can be a wonderful thing, but gearing a bike to work efficiently for all is a guess, the manufacturers try to give reasonable performance and economy for all....sometimes it benefits the lighter guys not to change, sometimes the heavy weights......gearing AND suspension on my Bonnie seem to work for me.....I don't see how some of you "lighter" guys can stand the suspension, it's perfect for me, and that is one of the FIRST things I've almost always had to change out.......not on this Dirty Girl.

jimmyc · 09-05-2006

Kliff,

Point well taken. One of the things I love about this forum is the wealth of knowledge and help everyone here is. As a "lighter" rider - 175lb - I never thought how gearing could affect MPG relitive to the weight of the rider.

I'm wondering though. What would the effective HP be if say we both rode a 62bhp bonnie. Like a weight to HP ratio. It would seem that I'd benifit more. Is there a formula?

kliff · 09-05-2006

Quote:

On 2006-09-05 11:47, jimmyc wrote:
Kliff,

Point well taken. One of the things I love about this forum is the wealth of knowledge and help everyone here is. As a "lighter" rider - 175lb - I never thought how gearing could affect MPG relitive to the weight of the rider.

I'm wondering though. What would the effective HP be if say we both rode a 62bhp bonnie. Like a weight to HP ratio. It would seem that I'd benifit more. Is there a formula?

Sure, add your weight, to the weight of the bike, and divide by the horsepower......you'll end up with lb/HP, and yes a lighter rider will always be at an advantage, especially when there is a 100 lb deficit as there is between us.
Performance advantage between 2 riders of the same weight can still be a gearing issue, but even more an experience issue and the cajones factor.....I'm talking on the track now....NOT dyno, or dyno simulated drags.

Hogdad · 09-05-2006

Hello Everyone:

What is the factory standard tooth sproket for my 2003 T100? Is it differet for different areas of the world?

I have now filled the tank three times since buying this 298 mile T100.

First two tanks with the Air Injection installed I have had 49 MPG and 46 MPG. Yesterday was the first tank since the AI was removed at the dealer during its 500 mile service. 48 MPG yesterday.

I am a 180 lb rider and mix rural with urban riding in the Northeast, US. I enjoy performance, but don't normally redline. Should I expect better mileage, or are these figures ok?

Thanks,

Barry

kliff · 09-05-2006

Quote:

On 2006-09-05 14:02, Hogdad wrote:
Hello Everyone:

What is the factory standard tooth sproket for my 2003 T100? Is it differet for different areas of the world?

I have now filled the tank three times since buying this 298 mile T100.

First two tanks with the Air Injection installed I have had 49 MPG and 46 MPG. Yesterday was the first tank since the AI was removed at the dealer during its 500 mile service. 48 MPG yesterday.

I am a 180 lb rider and mix rural with urban riding in the Northeast, US. I enjoy performance, but don't normally redline. Should I expect better mileage, or are these figures ok?

Thanks,

Barry

Can't help you with the "world wide" sprocket question Barry, but here in the States the std sprocket combo for a T100 is 18t/43t.
The larger engine, 865cc of the T100 vs the 790cc of the Bonnie probably does consume a little more fuel. The numbers you're quoting sound familiar, as to what I've heard other T100 owners discuss.

spiki-spikester · 09-06-2006

my 2003 T100 had a 17T / 43T combination, which was standard for the UK.

I am now on an 18T front sprocket & find it much better. I usually get to 85/90 miles before hitting the reserve, but this is mostly urban riding & I am around 220 pounds.

RevBuddyWinkler · 09-06-2006

Mine consistently hits reserve at 100 miles. I guess I need to lighten up on the throttle