Picked up the R1-Z 250 last week from the dyno. The jetting was all over the place, way to big pilots and others blocked. With the recently fitted Zeeltronic, mild porting and a set of spannies we got 46bhp at the back wheel and 51 at the crank. Justin did remark more could be achieved with different spannies but it would be top end and loose some of the lower midrange. Managed to get a short ride before lockdown and the bike pulls well, really good lower and mid range, the top end i could not test with traffic etc. So really pleased as its been a while. One thing did show up the temperature gauge is not working, i have ordered a new sensor. Any other areas i should look to if that does not cure it, are the gauges troublesome? Cheers all stay safe Bry
Makes me feel better about my poorly set up TDR pulling 40hp at the wheel.
Since then, I've done a Zeel ignition and leaned out the jetting a bit.
Plan is to get both the TDR and LC on the dyno within a few month time.
Congrats on the good pull, kernow 👍👍
Thanks. It's been a long time to get it running well but it feels like it's going to be a good result. Just got to sort the temperature gauge and look forward to the spring for some better weather and hopefully get on top of this horrible pandemic
On a decent dyno you can do tests to work out the transmission losses, I don't do it on old 2 strokes as it requires the clutch to be pulled in at max revs and kept held in until the rear wheel stops spinning, if you try and do this on an LC or YPVS you'll end up with a welded clutch pushrod to the ball bearing and the actuator arm (on a YPVS anyway), which then necessitates a full engine strip down to seperate and remove all the welded parts !
Yes, my dyno can do this test, and I have done it on my own kit, but won't do it on a customers, not unless they are happy to run the risk of the above happening......