19-Tooth Front Sprocket - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 133 (permalink) Old 10-24-2007, 07:14 PM Thread Starter
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Thumbs up 19-Tooth Front Sprocket

A few weeks back I talked to an old Triumph guy riding an '06 Dreamsicle. He said his old Triumphs needed to be geared down, but ours need to be geared up. I've listened to the pros and cons in the past, but he really convinced me to try a larger front sprocket.

I'm no longer searching for a sixth gear... since I installed a 19-tooth counter sprocket. She runs down the highway with less effort now and I'm getting 15 more miles out of a tank, before the switch to reserve. There's no going back for me now... 'cause I love it!

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post #2 of 133 (permalink) Old 10-24-2007, 07:34 PM
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My '04 came with a 17T, which was ok and ran up to about 115 mph and cruised at 80 mph all day without much problem. I went to a 16T for giggles and was very disappointed. It was a little quicker from a standstill, but the bike shifted out so fast it was sad. Barely got to 100 mph. With the 904, I have a 19T and it pulls like a tractor all over the throttle and highway speeds of75/80 are easier even in 4th gear. The bike gets to 90 mph in second gear. 19T seems better even with a stock 790/865 for me, an 18T may be better for stock setup.
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post #3 of 133 (permalink) Old 10-24-2007, 07:38 PM
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I've got a 19T on my California bike that sees the freeways about half the time, and kept the 18T on the Montana bike that will never see a freeway - nice country and mountain roads all the time there.

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post #4 of 133 (permalink) Old 10-24-2007, 07:44 PM
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A lot of it is a matter of where you live, the local terrain, and where you choose to ride. I've noticed the first two posts are from Texas and Indiana, so I'd have to guess that much of your riding is on fairly flat roads where you can literally flail the bike as hard as you want. with not a bunch of downshifting for constant changes in terrain.

Guys that live here in the somewhat hilly, twisty area of south central and south east Ohio have a whole different type of riding environment.

All of us should be glad we're not saddled with shaft drive, where what you buy is what you ride with. At least we can try going with higher or lower final drive ratios.

Bob

PS - I search for another gear on almost every bike I've owned. However, the Bonnie, with 17T, has me looking for it a lot.

PPS - where the h*** are you Sweat? I need some support for the 17T!

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post #5 of 133 (permalink) Old 10-24-2007, 08:27 PM Thread Starter
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Not really Bob, I live on the edge of the Texas Hill Country. And since I ride for recreation, most of my riding is on semi-twisty, hillside roads in the heart of our "hill country". That's a big part of the reason I put off going to a bigger sprocket for as long as I did. I was afraid that I'd always be grabbing a lower gear, and shifting more often. When the opposite is true. I'm actually shifting less often now... and lovin' it.

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post #6 of 133 (permalink) Old 10-24-2007, 08:39 PM
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Hey Dawg, now that you've got a 19t sprocket you want to try for another *ahem* "spirited" ride after the Rat Raid?

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post #7 of 133 (permalink) Old 10-24-2007, 08:42 PM
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I've had a 19T on my 2006 Bonnie for about a year now. Would not go back. I was surprised what a couple hundred rpm would make cruising down I-10 at 80. Well worth the effort to change. Cheap and effective. Why, Monte might even want to do this mod!

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Last edited by wonderdog; 10-24-2007 at 08:45 PM.
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post #8 of 133 (permalink) Old 10-24-2007, 08:49 PM
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Got mine on order because I'm always looking for 6th gear.
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post #9 of 133 (permalink) Old 10-24-2007, 08:50 PM Thread Starter
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Quote:
Originally Posted by SHRuuM View Post
Hey Dawg, now that you've got a 19t sprocket you want to try for another *ahem* "spirited" ride after the Rat Raid?

Hey SHRuuM... I'm still waiting for you guys to come to the hill country. I'm not planning to make the Rat Raid, but if you fellas wanna lay over for a few hours, count me in for a another "Round Robin" around Caynon Lake.

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post #10 of 133 (permalink) Old 10-24-2007, 08:53 PM
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Here I am! 17 tooth for life, down with the 19t!

Ok, say you put on the 19t and think it's the best thing you've done to the bike, wouldn't go back blah blah blah.

Fine.

All I'm saying (and Bob would agree), is go ahead and ride w/ the 19t for a few thousand miles, then swap the 17t back on there. It will feel like you've gained 10hp and someone unhooked the trailer.

Instead of a 19t front sprocket, I'd like to get a taller 5th gear made. If/when I split the cases again for more performance work I may look into it. Same close ratios for 1-4, but a tall 5th 'highway' gear.

I wish the bonnie was a 6 speed. I rode my bro's SV650 about 200 miles last weekend. 6th gear is pretty much useless unless you're doing 80+, but it sure is nice to have on the stupor slab. Nothing like doing 85 at 4000 rpms.
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