I've teed up with Megacycle in Keysborough to do $40 dyno day. It'll be straight power runs (no tuning) with a print out. We need a minimum of 8 people to get this going.
I'll confirm a start time closer to the date, payment will be prior to dyno day. I've mixed this up with a few other 4T riders so it won't be an outright 2T day.
Who's interested?
Last edited by nxrsr20 on Sun Mar 04, 2012 7:08 pm; edited 1 time in total
We built my old motor (complete with rebuilt crank), filled the system with coolant, ran it on the stand to operating temp, checked the coolant level, rode it 4 miles to the dyno, and it made 66-and-a-bit.
We slung some test pipes on it, and it made almost 68hp (no jetting changes). We put the Ethos pipes back on and it made 66-and-a-bit again, and then Steve caned the living daylights out of it, with an evil grin on his face Dick Dastardly would've been proud of!
2 years later, after a couple sets of rings, a set of pistons, and a good few thousand hard road miles, and it was still making 66-and-a-bit. (Back then we were doing a lot of miles too, including a fast 200 mile "TT" round the whole county every few weeks!)
Apart from scuffing teflon coated rings into almost rock hard nikasil bores, what is there to run in? You could bed the rings in on a stand if you really want to!
I bet 50p that if you measured everything up as new, did a whole track day, and then took the motor apart, the wear would be immeasurable to anyone but a rocket scientist, and you couldn't visually see any difference! If the jetting was bang on, you wouldn't even see a mark on the piston crown!
NSR's aren't bore-strokes... there are no shells to bed in, no oil control rings to bed in, no valve trains to bed in and adjust. People put far too much emphasis on "running in" a modern 2-stroke with nickel bores and teflon coated components! If it utilised steel liners, and crap old 70's/80's pistons & rings, then it would be a different matter.
BUT... If you are more comfortable running several sessions at xx, then xxx, then xxxx rpm/mph/load, then go with it.
Note: Steve's 75hp F-III had brand new rings in at Donington. It did two sighting laps behind the instructor in the first session (as everyone did), and then it was ragged senseless all day... by several people. _________________ Andy.
NSR-WORLD.COM
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