[Blackjack]

No doubt this is covered elsewhere but I am more after possible faults than actually figures.
I have a stock T100 that is getting around 125 kms per 12/13 litres during run in (78 miles)
OK I accept things are tight and there is usually a little more usage while the engine is new but I would say this is extreme.
Performance is also down I would say it is nothing short of ordinary off the mark lacks the mid range punch that I hear everyone talking about - what is the problem?


Sorry this post end up in twin owners rather than Bonnie.. but there is crossover between the two....

[ This message was edited by: Blackjack on 2007-01-02 02:00 ]

 

[bung1]

Hey Blackjack, there is a thread in Bonnie owners, by a Scrambler rider, same motor, diff. crank, should be similar, article is well presented as well.

 

[Blackjack]

Found something similar by iguana - 'This is the worst bike (for fuel economy) I've ever owned' but nothing by a scrambler owner yet.... Will talk to the dealer tomorrow but was after a bit of ammo before going in

 

[bobw3592]

I've read posts of people getting between 35-50 miles per gallon range. This is a huge variable for essentially the same motor regardless of crank/cc configuration. It does not always appear to be the modified (pipes, air box, jets) bikes that get the worst fuel mileage. I know that I get lower mpg when I run "easier" vs "like I stole it" rpm's(40-50 mpg). Your weight and driving habits/traffic conditions contribute greatly as well.

I would suggest (if you haven't already) that you take care filling the tank and note very closely the fuel level. Take a drive on a road that you can be very consistent at a moderate speed (no stop light to stop light racing, prolonged idle etc.) and travel for a fair distance (100 kilometers) and refuel as close to the level noted on the previous fill up. Do the math and repeat process. Use this as a baseline where you have controlled the variables as reasonably as can be expected. You then can see if the mileage is acceptable and if not, you can explain to the dealer why your not happy and have a fair analysis of how you obtained your base line data.

Good luck.
BobW

 

[ohiorider]

Converting to US measurements, looks like you burned 3.4 gallons (US) to go approx 77 miles. Not good, for sure. That works out to less than 23 miles per gallon. That alone could explain why your bike runs poorly. My buddy and I rode over 5000 miles this past summer and both bikes achieved over 45mpg running two lane roads thru Kansas with a headwind and running over 60mph for hour on end. The worst we saw was between 35-38mpg, running directly into a headwind of 25-30 mph on the Interstate at over 80mph.

Re the mid range punch .......... that's a subjective thing. Mine accelerates quite well in the mid range, but it is a 60hp engine on a 500 pound bike, and isn't a torque monster. A bit slower feeling mid range than my 1000cc R100GS. Maybe it's a displacement thing.

I'd say you have a problem with your bike that needs some attention IMHO.

Bob

 

[Maccaoz]

G'day Blackjack.
On my 01 Bonnie I fill the tank almost to the top and I get 240k before reserve,under normal conditions.
Some time back i had the words worst service/tune .The bike just didn't feel right.I did a few thousand k and decided to check every thing,It was all R/S,carbies all over the place,shims the same.Funny thing was fuel consumption and preformance didnt change much at all.?????
Best of luck,inform us of the fix,these things are good to know. Macca.
:???:

 

[Blackjack]

Thanks guys - Booked in for a check-up.... But canny get in until the 17th.... Will get back with any updates after they have had a look at it

 

[Scrambler900]

Hello Blackjack, and welcome to the Bonne world.

I have a new T100 (not rejetted) and a Scrambler (re-jetted), and both are fitted with Triumph's off-road TOR exhaust. Other than the two bikes having a slightly different firing order (which is well documented in the Triumph marketing literature), their engines are the same size and have the same cams, etc., and their gas tanks hold the same volume of fuel. The two bikes dyno to within 2 - 3 horsepower (and 2 -3 foot pounds of torque) of each other in Triumph's comparative sales literature

First, my non-rejetted T100 (stock jetting) gets slightly better fuel mileage than my re-jetted Scrambler achieves. I can ride about 130 miles on the T100 before the bike begins to run out of gas, and then I need to switch the fuel petcock from On to Reserve. On the rejetted Scrambler, this occurs at around 110 miles ridden. I think my fuel economy is around 42 - 45 mpg.

Also, I swear that my T100 gained nearely 10 mph in top end speed after I installed the more free flowing TOR off-road exhaust.