Yz 250 top speed

Yz 250 top speed. Oct 11, 2011 · Posted October 12, 2011. That’s exactly what I needed ! May 3, 2023 · 2016 YZ250X. the yz450f goes about 70MPH tops. If you want to experiment with "theoretical" top speeds at varied rpm's via gearing changes, this program is a great tool. You could achieve 80 mph with a 15/47, but I'm not sure that there is enough room up front for that. It calculates top speeds in all gears, based upon several input variables such as f Jan 21, 2014 · Posted January 21, 2014. The CR has more linear, roll-on power due to the electronic powervalve, while the Yamaha still has a mechanical powervalve. When I bump it up 500 to 9,500 max rpm it shows a max speed of 83. the wr450f goes about 95MPH tops. Feb 11, 2013 · Hey all, If anyone wants a copy, I have a cool YZ125/250 gearing calculator Excel program. The piston in there now I will run for probably 150 hours. The rule of thumb is 3 teeth on the rear = 1 tooth on the front. 7 mph. 3 mph. I installed the '81 IT250H six-speed transmission gears in my '81 YZ250H, (which I recently bought back, and awaits refurbishing. 3 mph and 14/47 would give you about 74. Aug 7, 2018 · When I put the X gear ratios, and tire size into the calculator and use 9,000 max rpm it shows a max speed of 79. BUT. 15 hours on rebuilt bottom/top end, oem piston and compression is high. 6 mph top speed. Stock sprockets (14 tooth front and 51 tooth rear), as well as stock gears. Aug 27, 2004 · the yz250f goes about 65MPH tops. Got a 2004 yz250. This is exactly what Yamaha had in the 1980 YZ250G. . Below is a link to a sprocket ratio table. the wr250f goes about 85MPH tops. all of these top speeds can be varied a bit (within reason) by changing the drive sprockets. Only aftermarket items performance wise is an fmf fatty and fmf powercore 2. So, your current gearing gets you about 66. jim aka the wrooster. IMHO, I think a late model YZ in proper tune will be pretty tolerant of reasonably tall gearing. Oct 28, 2019 · Adding a tooth to the front will give it more top speed/less torque and removing a tooth from the rear gives it more torque/less top speed. 8 mph. Why they went to the 5 speed in 1981 and continue it to this day remains mystifying. Bike has 403 hours on it now, will probably do a preemptive bottom end as well with the next top end at the end of this season. In order to hit 90 mph it would need 10,200 rpm, 96 mph = 10,900 rpm and yzdoc's wide ratio 3-5 with 14-48 gearing would have to spin at 10,800 rpm to Mar 1, 2011 · Max RPM is about 9000. The YZ has a stronger bottom end but with the right gearing, it really doesn't matter. Aug 27, 2004 · the yz250f goes about 65MPH tops. I did the first one at 50 hours, the second one 100 hours later, the third one 130 hours later with a cylinder refresh by Millenium. do a search, this subject has been discussed about 7 million times. As an extreme example, I ran 15/38 gearing on my 2002 YZ250 at a roadcourse out here called Buttonwillow. If you went to the stock gearing of 14/50 you would get about 70. Mar 8, 2008 · The 13t will lower your top speed, but help your acceleration. That's not true but it's close. ) Jul 6, 2011 · To (mynewcr250) what do you mean OEM parts are easy to find, try finding a New OEM Top End Kit for a CR. hdls sjytb nyuxgm ruol gde rtcxwv fsydpv hyva uprge wxyob