New Speed Twin - Page 87 - Triumph Forum: Triumph Rat Motorcycle Forums
Water Cooled Twins Talk Discussion of water cooled Triumph Twin related matters and topics.

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post #861 of 1024 (permalink) Old 07-23-2019, 03:28 AM
Formula Extreme
Main Motorcycle: TBS,Daytona 900
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Hi Kid, did you ever get your seat done? Any pics..........
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post #862 of 1024 (permalink) Old 07-23-2019, 02:52 PM
Grand Prix 250
Main Motorcycle: Speed Twin, Korosi Red
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Quote:
Originally Posted by markg333 View Post
No issues

but I removed the baffles and added an xpipe so I figured a little more fuel could help

I haven't been on a ride yet its so hot and humid today

If you need help on any of this stuff--I know you live pretty close by and I'm always glad to help out

UPDATE -took for a ride with booster plug and it runs even better -seems pretty smooth

its a 10 minute install and $150 and easy took take off if you dont like-plug and play! ajscyclesny has them
I have the same set-up on my Speed Twin. Can you elaborate on the ride difference with the booster plug? Sounds like an easy install, and removal if needed, but it's still $150. Is it worth it? Thanks.

Last edited by swish77; 07-23-2019 at 02:55 PM.
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post #863 of 1024 (permalink) Old 07-23-2019, 04:41 PM
Minitwins
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I want to comment on the stalling issues people have had with their Speed Twins. Mine suffered from stalling too, the same as for everyone else where the bike dies as you crawl to a stop and downshift to 1st gear.

I have 2000km on my bike now. The 800km service was performed by my dealer. My bike is completely stock.

My bike never stalls now unless it is my fault. The engine and transmission finally feel fully broken-in, especially after a few very spirited runs with some hooligan friends of mine who were on much faster bikes. And I mean really spirited where I am absolutely pinning the bike out of every corner and shifting at 6500rpm on a twisty road for 45 minutes continuously.

When my bike was new, it just felt so unbelievable tight. Now the engine and transmission feel nice and loose, and no more stalling - with a completely stock bike.

I think Triumph just has the bike tuned within such a fine window where meeting emissions standards and being good to ride intersect. The bike has pretty big cylinders, a smallish catalytic converter, and a tiny radiator for its power output (those fins must be functional). It lacks tricks to help widen that window like dual-spark plugs (like Ducati Testastretta engines), or a bigger radiator or a bigger catalytic converter. The lack of dual plugs is likely to keep the cost down. The small radiator and small catalytic converter are sacrifices for style I bet.

My theory is that the extra tightness before break-in is enough to put the bike on the edge of this window, hence the stalling. Just a theory, but my bike never stalls anymore.
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post #864 of 1024 (permalink) Old 07-23-2019, 04:54 PM
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Id say you could be right. It idles very low and feels like its going to stall .
Mine has never stalled since I got it.
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post #865 of 1024 (permalink) Old 07-23-2019, 05:32 PM
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Main Motorcycle: 2019 Speed Twin
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Hi Kid, did you ever get your seat done? Any pics..........
I did, its a massive improvement for me, but not for my pillion who needs more room. Back to the drawing board. I don't have the know how to put pictures on here, sorry.
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post #866 of 1024 (permalink) Old 07-23-2019, 07:03 PM
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Originally Posted by swish77 View Post
I have the same set-up on my Speed Twin. Can you elaborate on the ride difference with the booster plug? Sounds like an easy install, and removal if needed, but it's still $150. Is it worth it? Thanks.
It feels smoother in transitions from closed loop to open loop fueling
overall just smoother and maybe a little more power
keep in mind-- I thought it ran good before
this is a subtle change but for 150 plug and play easy install or remove I'm pleased
it plugs in between the factory air temp sensor--take rear tank bolt out and lift up tank slightly and there it is-- the one remaining wire is an external air temp prob that needs to be in clean air--basically not near engine or radiator heat
I easily put mine down by air filter intake duct under left side cover

I used a zip tie to position things

need be I can post pictures or email them later
SSK Dave likes this.
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post #867 of 1024 (permalink) Old 07-24-2019, 03:12 AM
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Main Motorcycle: Speed Twin (on order)
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Originally Posted by Burren Boyo. View Post
Heading towards 3 thousand Km now and it just gets better and better..................
Whooooooooooosh !
Catching you up! - 2,000km now. Got the first day of dry tarmac at the weekend (it's mid-winter here in Auckland) - boy she handles good :-)
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post #868 of 1024 (permalink) Old 07-24-2019, 07:33 PM
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Ugh that problem again. It's decel dfco (dynamic fuel cut off) where fuel isn't sprayed while engine braking and the rear wheel is pushing the engine, and then the ecu doesn't catch the engine fast enough when pulling the clutch. I can trick my Z4 (car) into stumbling pretty bad down to 350-400 rpms though the ecu always manages to spool it back up to idle rpms. Kawasaki Ninja 300 was cursed with clutch pull stalls while decelerating, and they disabled dfco in the end iirc. My Yamaha R3 idled so lean that just cracking the throttle open, the rush of air stalled the engine twice an hour on average. They tune these bikes to within an inch of their life and then don't allow for any manufacturing variation.

Last edited by xorbe; 07-24-2019 at 07:35 PM.
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post #869 of 1024 (permalink) Old 07-25-2019, 05:07 AM
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Originally Posted by xorbe View Post
Ugh that problem again. It's decel dfco (dynamic fuel cut off) where fuel isn't sprayed while engine braking and the rear wheel is pushing the engine, and then the ecu doesn't catch the engine fast enough when pulling the clutch. I can trick my Z4 (car) into stumbling pretty bad down to 350-400 rpms though the ecu always manages to spool it back up to idle rpms. Kawasaki Ninja 300 was cursed with clutch pull stalls while decelerating, and they disabled dfco in the end iirc. My Yamaha R3 idled so lean that just cracking the throttle open, the rush of air stalled the engine twice an hour on average. They tune these bikes to within an inch of their life and then don't allow for any manufacturing variation.
Yup - pointless forced Euro IV fuel parsimony - meanwhile the roads are clogging up with 2 tonne SUV's - go figure!
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post #870 of 1024 (permalink) Old 07-25-2019, 10:41 AM
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Picking up a new 2018 Suzuki GSX-S1000 to join the Speed Twin on Saturday.

New thread here: https://www.triumphrat.net/biker-han...post2003972680

2019 Speed Twin Silver Ice and Storm Grey

Remus slip-ons from Thruxton, baffles out. Mods ordered: TEC x-pipe, TEC booster plug.

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