2007 Triumph Speedmaster Top Speed
2007 Triumph Speedmaster Top Speed
Joined
·
65 Posts
Discussion Starter · #1 ·
Guys, I know someone asked this a while back but I can't find the thread and I can't remember the outcome. I had my 2012 SM flat out today for the 1st time (1500 miles on the clock) and it would not pull more than 95mph. At 95 it would stop pulling and it felt like the rev limiter was coming in even though it was only revving to 5500/6000 or something like that. It was a long straight and I was able to hold it wide open for ages and it just wouldn't rev any higher. Is this normal?
Joined
·
89 Posts
I've seen over 100, on a private road of course, but I found that rolling on from 70/80 in top it made speed very slowly however dropping a couple of gears and spinning the engine up it made the ton easily.
Joined
·
2,320 Posts
I have an 09 America. Stock with short TOR exhaust it would barely get to 100MPH. Felt like it just kinda gave up about 6,000 RPM in 5th gear and would not push past the wind resistance. Think the tune / fuel map and the cams were just at max operation. Pulling the snorkel and a custom fuel map may help. I have since had a bit of work done. During the Dyno tune process had 120MPH display several times (inside on a machine, not on the road). Now with a custom tune from Power-Tripp Performance it goes much faster! I let off at 110MPH. Haven't taken 5th gear over 6,000RPM but I'm sure it will now. *my speedometer does over report 3 - 4 MPH compared to GPS.
Joined
·
189 Posts
Just over 110mph on my 09 Speedmaster is about tops, even sat upright with the apes. I had short slash cut TORs fitted and dealer tune from new.
95mph doesn't sound right at all.
Russ
Sent from my Motorcycle iPhone app
Joined
·
65 Posts
Discussion Starter · #5 ·
Hmm. Same story this morning. Seemed to be bouncing off the rev limiter in 5th at 97mph indicated, dropped it into 4th and it revved way higher than it would in 5th but when it hit 97mph it just bounced again, so it seems there is defo some kind of restriction there. Allowing for a bit of speedo error this is prob 150kmh true speed, which is a nice round figure to set a limiter at. I'll spk to the dealer in the morning.
Joined
·
386 Posts
Downhill, tailwind, sea level, united filters and nothing past my headers and I top out at an indicated 117. About 190 lbs.
Joined
·
935 Posts
On a Dyno mine did 180km so that's about 111mph. I've touched 100mph[160kph]on the road and could have probably wound another couple of mph out of it .
[Of course,I'm a fat boy on a Triumph]
Joined
·
1,353 Posts
If you think that a rev limiter is stopping you there are a few places that sell or modify Igniters which increases your timing and raises the rev limiter. I got my rev limiter modified from TP USA and it raised the rev limit.
Joined
·
524 Posts
95mph doesn't sound right at all.
Russ
Sent from my Motorcycle iPhone app
Agreed. My 2011 easily surpasses 100 if I want it to, but I don't like riding that fast. Even my little 600 CC Honda will do close to 100.
Joined
·
46 Posts
I have an 03 america, and have had it up to 180k's + a little, I'm thinking of increasing the drive sprocket by 2 teeth and the rear sprocket decrease by 2 teeth, any thounghts.
Joined
·
2,320 Posts
Grumpy, going up a tooth on the front is easy, quick and doesn't cost a lot. I went up a tooth on the front of my Bonneville (19t) and later back to the 18t after some mods. Seems it made about a 500RPM difference but did not test top speed. Dropping a tooth (17t) on the America seems to have made a little less RPM change but did not reduce top speed any that I could tell. Seems there was a calculator around at one time about changes to engine RPM from sprocket ratio changes. Going up 2 on the front seems like a lot so changing the rear would be good with it.
Joined
·
65 Posts
Discussion Starter · #12 ·
Diggin a bit deeper, I found a couple of threads from a while back that say all 2012 bikes (and poss 2011, can't remember) are top speed restricted. Apparently the restriction (in the EFI map) can't be switched off but the TOR EFI maps don't have the restriction. It's pretty academic TBH, I'm just annoyed at being sold a restricted bike without being told
Joined
·
65 Posts
Discussion Starter · #13 ·
I have an 03 america, and have had it up to 180k's + a little, I'm thinking of increasing the drive sprocket by 2 teeth and the rear sprocket decrease by 2 teeth, any thounghts.
That's a huge step up in the gearing and having done similar mods on bikes myself it sounds too much. That's roughly 17% higher gearing. I think you'll have problems rollin slowly in queues etc and pulling away will require a lot more clutch slip. I'm curious as to why you want to have substantially higher gearing. I doubt you'll increase top speed by gearing that highly as the engine isn't a very "top endy" engine and won't pull that gearing anywhere near as well as it pulls the standard gearing, and obviously you'll lose some acceleration too. I would try just the gearbox sprocket 1st as I think just 2 teeth bigger on that may be plenty.
Joined
·
1,353 Posts
Wait a minute Leigh. If he goes up two teeth in front and two teeth in back it's less gain than just two teeth in front, right ?? Increasing the rear decreases your gear ratio. Or am I looking at this wrong ??
Joined
·
89 Posts
He mentioned decreasing the rear by 2.
I have gone 1 tooth down on the front. I think on the america, although not over-geared overall, the first gear is too tall. It meant slipping the clutch too much for my liking in traffic and sluggishness off the line. The 17t front sprocket has improved things but the trade off is higher revs at motorway speeds and making the speedo even less accurate
Joined
·
340 Posts
Top speed
I find it hard to believe 95mph. I have a 2009 Speedmaster only mods I have had done are TOR'S Long , K & N filter and the remap for the pipes. I've had mine up to 110MPH assumed there was more to go. Maybe true without the remap for the TOR'S you are hitting the top end restrict er?. Get the TOR'S they are so worth it.
Joined
·
46 Posts
Thanks for all the input, that is why I put it up here for discussion. As a mechanic, I can put fuel in the tank but after that I get a little lost. The reason I was looking at this is I ride a lot with bigger bikes and sports bikes (trips) and felt I was getting close to max revs to keep up. They do go pretty quick, but tend to be pussies when there happens to be a bend in the rode. Straight liners, cheers and again thank you
Joined
·
46 Posts
Excuse my ignorance, but what are TOR's, as I said I am not a mechanic lol
Joined
·
2,320 Posts
Triumph brand high flow slip-on silencers with a "not for road use" sticker. Commonly referred to as Triumph Off Road (TOR) pipes.
Joined
·
65 Posts
Apparently, the newer bikes (2011-2012)have a speed limiter in the EFI map. If you switch to TORS there is a completely different EFI map and no such limit programmed in.
2007 Triumph Speedmaster Top Speed
Source: https://www.triumphrat.net/threads/speedmaster-top-speed-again.207646/
Leave a Comment