Triumphrat

Mark62 · 08-28-2005

After searching this site for as much info as possible, I finally dove in. My bike had 19/40 sprockets and that is what I stayed with. I turn 4000 rpm at 80mph.
The changing of the rear sprocket was straight forward. The front was a little more challenging. removing the cover was straight forward. The nut that holds it on is 1-7/16" or whatever the metric equivalent is. I do not typically have sockets this size, so I borrowed one from work.
The old chain had a master link that was the clip type. The new one was a rivet type that the side plate is pressed on. Of course I did not have the special tool to install it. I looked at the closest bike shop and they would have to order it. I ended up using a C clamp and a spacer to press it together and flared the head with a punch and bmf hammer. I aligned the master link with the tire and placed a piece of metal stock between the two for a brace to hammer on.
The task is not tricky, if you have the right tools to begin with. It should of taken 2-3 hours to complete.
I noticed on my test ride that the bike has less vibration now. I purchased the parts at my dealership for $225. I could not find a vendor on the internet that had the same sprockets. Several were close (AFAM), but not exact. Everyone sells chains.

stevent · 08-28-2005

I went from 19/40 to 18/44 but it was too low, so I went back to a 19T front with the 44 rear. Works pretty well for my type of riding. The front sprocket nut is 36mm, available from Sears for a couple of bucks, if you plan and doing this yourself from now on Motion Pro sells a pretty slick chain tool for around $100 that presses and rivets any size chain. I ordered one from Dale Walkers Holeshot Inc. when I had a Suzuki and it's worked really well.

I'm getting ready to do the front end on mine, I've got new Hagon springs and EBC pads ordered. My front tire is just about done, so when I replace that I'm going to pull the forks and change fluid and springs and clean and grease the steering head bearings and flush and change the brake lines and pads.

rat2tymes · 09-04-2005

AFAM part number 8612004-8. 19F 40R 94-99 Trophy 1200 Steel sprockets and O-ring chain. I called them before I ordered mine to verify, and this is the info I got.

sixtysix · 09-04-2005

AFAM does have the 19/40 combo with chain, I got one a couple years ago. Chain and Sprockets is about a hour job, with the right tools. My wifes Sprint takes like 20 minutes since you don't even need to remove the wheel. Motion-Pro sells a chain breaker/riviter for about $100 that works great, I actually bought it for cam chain and it goes up to 530 chain.

rat2tymes · 09-16-2005

Mark62- i don't know how you are only turn 4K @ 80mph. I changed my chain and sprockets today. turns out I had 19/40 all along. But I turn about 4700 @ 80. Oh, well. I still love the bike.

Netmaker · 09-17-2005

Sprockets for the Triumph are available from Sprockets Speciality and JT sprockets ( both have web sites ). I currently use a master link with the clip and secure it into position with a tie wire and have not lost a clip, however EK chains ( they have a web site ) have a neat and simple master link system that is self riveting and only requires a small wrench to set side plate and set rivets, so I carry one of those as a backup if a chain did break. I currentlty run DID chain, as we use them on our textile machinery and they are always available, and with use of spray lube around 500 miles I find they give good service. I have one of those sprocket / chain align tools from Cycle gear and they make the whole alignment process simple and quick. I currently run the 19 / 40 combination and at 3800 rpm = 70mph and 4200 rpm = 80mph so sounds like speedo error may be contributing to different results.

[ This message was edited by: Netmaker on 2005-09-18 16:47 ]

Mark62 · 09-22-2005

I agree there is some guage error, but that is what it is showing. Now if it is correct or not I do not know....
Does any know for sure what the guage error is? Any of you gps owners know? I think it is 5-10mph at 70 plus.

12004 · 09-22-2005

How about your fuel economy?
With the new gearing...Did it help?

Mark62 · 09-23-2005

I am getting 40 mpg! and lovin it!