This will be a complete tune using tune ecu and a system designed for sound on the bores. The way it was explained to me is sound measuring sensors will be attached 6in from each bore, every bore size has a unique sound in a numerical value. They will input the value for the rocket bores into the system and start the process of finding where the bores start to pre detonate which is represented in the tune ecu graphs/ throttle percentage rpm boxes and adjust timing accordingly, and afrs as needed when changes are made, the first part will be done at the shop, then i will ride for real world numbers and on the 24th of october we go to beach bend 1/4mile drag strip for that data, its a test and tune day so we will be making adjustments to get rid of slippage at rear wheel on a motorcycle tire. Then its back to the shop to read data make adjustments and hopefully have a unleashed rocket. It starts this friday sept. 25 to get fitted for bore sensors as they have to make brackets for attachment and install the bore sound sensors and get it ready to start this deal. I will post results and all info on how this is done with pictures to share this info. Im running neville lush internals, lms exhaust so im not sure how the timing tables will be helpful to anyone else but atleast we will finally know how retarded triumph actually sets up a rocket engine at factory. Wish us luck will ya
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All knock sensors are acoustic measuring devices. OEM sensors are tuned to the specific engine type and size. Detonation, pre-ignition, and knocking (which can occur without detonation) have distinct vibration profiles and can be identified. Sound travels very well through metal so only one is needed to detect abnormal combustion noise in any cylinder.
The system your tuner will use is likely a universal type system meant to be used as an add-on to assist in tuning. You/they will discover the Triumph ignition tables are set for emission reduction at small throttle openings (meaning retarded from optimum to keep exhaust gas temperature high) and fairly close elsewhere and at WOT for the power level of the stock motor.
Keep in mind that without an O2 sensor to adjust for various fuel types, meaning ethanol blends which are becoming ubiquitous, your timing will not be optimum for any fuel other than the fuel in your tank while testing. Sorry, but all fuel brands vary from batch to batch (the percentage of alcohol is always labeled as "Up to 15%"). . Only non-alcohol fuels are more consistent batch to batch. And watch out for gas pumps with a single hose dispensing all grades. A quart or so of 87 octane gasohol out of 12 gallons of 91 non-alcohol fuel put in a sports car, for example, is quite different than putting a 4 gallon mixture into a 6 gallon bike tank.
It will be interesting to see the ignition tables you develop.
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He uses a sensor for afr in o2 port but no knock sensors for sound will be used its a listening device settup at 6in from each bore. Each bore will have its own listening device and all three bores will be listened to at the same time and recorded. I will post pictures of what he uses for this. As the number value for bore sound changes in each bore it pings a blue dot in program identifing pre detonation. As I understand it, the system he uses he developed and cannot be purchased as he made it and the program himself. This man made his living developing products for the U.S. Navy and in particular stuff for the seals, like these tiny little pumps they have that allow a dive depth of 800β and these covers for there tanks, stuff that is super light and evedently sophisticated, his tour of his shops was way over my head and he speaks in alien terms, him and speedy would have a great conversation lol aliens just chatting lmaoLast edited by Widowmaker; 09-23-2020, 05:32 PM.
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A knock sensor is a listening device. It measures pressure waves, or sound waves. This gentlemen's device may be very sophisticated and work very well but at its very core it is a knock sensor..
I am not suggesting that you use an O2 sensor, just saying that with one in play the AFR can be held closer than without one. Generally, a leaner combustion will "knock" before a richer one.
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So i dropped off bike and we talked for a while about what i wanted, were gonna install bungs in each header tube and get afrs correct in each cylinder and try to get cylinder temps the same, then were gonna start finding the ping in his system, after talking with sparky about this and his witnessing my spinning in 1st and 2nd we will try to get torque down in those 2 gears and open it up in 3-5, this will be a process. Final runs will be oct. 24th when we go to beach bend 1/4 mile track for the day and dial in 1st and 2nd timing along with changes to air pressure and try to get this thing down the track without smoking the tire. Part of the problem may be my clutch hand and throttle hand, twisting throttle before clutch engages, its gonna be a combo of things but i am going to get this. The man that has the ping system said he believes there is a lot left in this motor from where we were with universal afr tune, to what is fixing to happen. Im very excited to see. Tomorrow we start installing ping system and wideband sensor bungs in headers at exhaust exit just past flanges in each tube. Ill post pictures
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Speedy that system is like you describe not that i doubted you because i dont have a clue but it does use the knock sensors that work with these other things and a box, ill try to learn more and ger better pictures when we get it settup on mine, they were just bringing his off dyno and on test ride it ran strong but got hot in midrange with no knock but theyre gonna pull a few degrees out and check again and then hook up to mine all 3 at once he used single sensor on his.
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This week was spent getting bungs in header tubes, ramping throttle body adaptors, syncing throttle bodies, plugs, the ones i had in had 5000 miles but tuner wanted to check them for fueling, timing marks, coils and connectors are getting changed, them connectors he doesnt like to loose i had a set of coils with 14000 miles and plug wires so theyre going in, but today we started setting afrs in L1 L2 and are ready to get L3 set, next we will strap it on dyno for F1 F2 F3, then start setting timing, we put the timing sensor deal in the throttle cable cams cover screw holes, after getting timing set on I1 I2 and I3 we will check fueling in L1 L2 L3 F1 F2 F3 and make whatever chsnges are needed and hopefully be real close. What a deal
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Fueling is dialed in, today Conrad strapped it down and started on timing portion of tune, slow process but very good day, He needs 5 more gallons of fuel and tomorrow he continues on. Probably end of day Saturday tune will be complete. Then on the 24th its track day and were gonna try to set up 1sr and 2nd gear timing and fuel for a drag strip map. Big fun
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