To pep up the acceleration on the Thruxton models I think they lower the gearing, I'm pretty sure I've read that somewhere on specifications. My Street Twin despite only 5 gears seems about right to me especially now you can hang onto the intermediate gears longer. Bizarrely I never find myself looking for another top gear. Why don't you count the teeth and +1 for the front to give that more relaxed top, and hence better economy on a run?
I will be fitting new chain and sprockets to his Panigale at the weekend so will check out the gearing. Thanks.
Hi @Baza I know I've seen the detail elsewhere but here is a photo from the Haynes manual for the general idea. Use the following for reference only in your case as these details are for watercooled models so yours may vary.
I've now put nearly 1000 miles on the new cam and must say I don't have anything negative to say. If you're thinking of getting one yourself then just do it and it makes the riding experience so much more pleasurable. Note to reader: I've no connection or affiliations to Tec in anyway. Mpg appears to be still rising according to the dash. Previously it was running between 55-57. Now I'm over 60 mpg and each time out it seems to creep a few more tenths and I must say I'm not riding it in an economical way, just riding to enjoy. If you were to ride it sedately, and economically, then up towards 65 looks quite possible.
Good to hear, although with regard to Tec it seems that it's caveat emptor save for their cams and fork internals.
A bit late for this but T120 rims are a direct fit to Street Twin/Cup. Then you can take the advantage of having double front discs also, just get T120 right fork slider and the brake stuff. The second picture is T120 wheels W/O the right disc on place.
When you say 'just get T120 right fork slider and the brake stuff', how easy was that? I admit I haven't looked (yet) but I would imagine that finding a T120 front wheel with disc, a fork leg and calliper in good condition wouldn't be simple..or inexpensive. But maybe they're out there.
The costs will soon stack up. Someone recently mentioned using a Honda CB1000R front left caliper to upgrade a StreetTwin. I did a quick search and somebody wanted £450 for a good condition pair of second hand fronts which I thought was a bit steep.
Hi, I bought the TEC 101 camshaft in 2022 before the TEC 202-model was released. The 202 is a Stage 2 camshaft, but they are both for the same chassis numbers AFAIK. I recently got this answer from TEC when asking them: "The stage 2 cam has slightly longer duration for better performance, we're dropping the stage 1 cam as the stage 2 gives better power." However I guess with the Stage 2 cam you lose some bottom torque, and I don't want that. I didn't finish my installation of the camshaft last year, but will do it soon. One thing you didn't mention is that this camshaft needs a tune or remapping to get the most out of it. It's not very easy to do plug&play, so that is probably why TEC says it's not necessary. But it will make a difference. I have the TuneECU app and have been doing some investigations. I just hope there is someone out there that have done the proper mapping already, and is willing to share their file. It's not that hard to do an upload/flash of the ECU. I already did it, derestricting my bike from A2 license. Or else the tuning map has to be custom created for the bike and camshaft. There are some interesting youtube videos on this subject. Finally there is DNK Tuneworks. They can provide a custom map file, or mail-in ECU service. The company Raisch in Germany sell their performance camshaft with the Power Commander and their own tuning map. But the price is way up there. They say this on their website: "In addition to the assembly of the camshaft we recommend further tuning measures such as a larger air passage, cat replacement pipe, sport exhaust and of course a new engine tuning. Some suppliers sell camshafts with the information that the motorcycle would adjust itself. These statements are absolute nonsense, since the electronics only have a very simple control circuit (jump probes) in the exhaust system and also have no mass air flow meter in the intake system. Therefore a mapping adjustment is necessary (Power Commander, ECU Flash). If you want to have it Plug & Play, you can use our ready made power kits."
I like your post but I'm not sure I fully agree. The bike being what it is, is never going to be a rocketship. Mine had Vance and Hines (no baffles) pipes and a cat delete x pipe. It also has a K&N filter and I've removed the airbox snorkel. Like you I didn't want to lose bottom end torque but felt it very asthmatic on higher revs, just revving for the sake and no real pull. The bike has just completed 1560 miles around Scotland and worked absolutely faultless. See my thread here...... https://www.thetriumphforum.com/threads/scotland-here-we-come.42117/ I do possess Tunecu and was prepared to remap if needed, but I seriously haven't felt the need to change any mapping and have been happy with the outcome. Maybe finish your install, try it, then provide further feedback
It's a little frustrating that different companies give you contradictory information about a product, in this case TEC vs Raisch. TEC say the bike automatically adjusts to the new camshaft, whereas Raisch say that's nonsense. I agree with Eldon, my bike has covered over 8000 miles, including a recent 5 day tour of Normandy (D-Day beaches, memorials etc), without a hitch and I'm happy with the way it performs. Has anybody fitted a Power Commander to a Street Twin? I would be interested to know if there is any substance to the claims made by Raisch. Obviously there would be no point asking anyone at Triumph.
One of my sons has a 900 Thruxton and like your Street Twins has circa 65 bhp/PS which has always struck me as woefully low. My2001 900 SuperSport in standard trim is 79 and going even further back in time the 58 Bonneville produced 48. If you do the calc to find the output for every cc you will find the 66 year old Bonnie outperforms the current 900 Street/Speed Twins. What are Triumph playing at?
You can do a similar thought process on bike weights, older ones seemingly lighter despite any advancement in materials. Adding emissions clutter certainly hasn’t helped any material gains.
Definitely, I remember when I was riding the Tbird I could lift the rear wheel off of the deck by grabbing the luggage rack fairly easily. My Striple and SS not a chance in hell. Or is that down to my advancing years?
The consensus is that the engine can adjust itself for minor changes like air filter and mufflers/slip-ons. But bigger changes like decat with x-pipe and certainly a different camshaft is outside of the limits for the engine electronics to compensate for. This will result in less performance and too lean mixture compared to an ideal fuel and ignition map. A nice guy in USA has done his research on this, both on the 900 and the Speed Twin 1200 (and other Triumphs). The factory mapping is focused on emissions and fuel consumption, so there are benefits of doing this better even without a camshaft upgrade. He has posted a lot of youtube videos on the Triumph tuning subject, and using TuneECU to improve performance. He even sent me his TEC cam tuning file, but it's for the Street Cup with twin clocks so I don't think it will work correctly for my ST. I would have to copy the values over to the correct map, probably not too hard to do.
Now less bike means less power although usually the weight isn't much different, drop 40 bhp and save 5 kgs wow Look at a Kawasaki z650 twin, nearly 200kgs What we (I) really want is 100bhp with a weight under 150 kgs
Our Street Twins has 55 hp stock (2016-2018 models). But the torque numbers are extremely good, so at normal driving speeds it isn't underpowered at all. Triumph increased peak power to 65 hp from 2019. A 66 year old Bonnie hasn't got a chance against modern high torque engines. But they are not meant to be high revving engines for high top speed bikes. And of course brakes, suspension and handling is in a different league too.
Yes, the criteria when I bought the Striple were less aggressive riding position, lower seat height (under 800 mm), lower weight and some electronics, particularly ABS. As it was I didn’t even test ride it. As soon as I sat on it and could flat foot it the deal was done. Didn’t even know about the quickshifter until I collected it I certainly got far more bike than my earlier aspirations were hoping for. And for 10% off of list.
