Yz 250 top speed
| Yz 250 top speed. IMHO, I think a late model YZ in proper tune will be pretty tolerant of reasonably tall gearing. the wr450f goes about 95MPH tops. Below is a link to a sprocket ratio table. The YZ has a stronger bottom end but with the right gearing, it really doesn't matter. the yz450f goes about 70MPH 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. This is exactly what Yamaha had in the 1980 YZ250G. ) 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. 15 hours on rebuilt bottom/top end, oem piston and compression is high. I installed the '81 IT250H six-speed transmission gears in my '81 YZ250H, (which I recently bought back, and awaits refurbishing. jim aka the wrooster. You could achieve 80 mph with a 15/47, but I'm not sure that there is enough room up front for that. Feb 11, 2013 · Hey all, If anyone wants a copy, I have a cool YZ125/250 gearing calculator Excel program. Aug 27, 2004 · the yz250f goes about 65MPH tops. As an extreme example, I ran 15/38 gearing on my 2002 YZ250 at a roadcourse out here called Buttonwillow. all of these top speeds can be varied a bit (within reason) by changing the drive sprockets. Stock sprockets (14 tooth front and 51 tooth rear), as well as stock gears. BUT. The rule of thumb is 3 teeth on the rear = 1 tooth on the front. 3 mph and 14/47 would give you about 74. 6 mph top speed. Aug 27, 2004 · the yz250f goes about 65MPH tops. That's not true but it's close. The CR has more linear, roll-on power due to the electronic powervalve, while the Yamaha still has a mechanical powervalve. 3 mph. If you want to experiment with "theoretical" top speeds at varied rpm's via gearing changes, this program is a great tool. So, your current gearing gets you about 66. Got a 2004 yz250. The piston in there now I will run for probably 150 hours. do a search, this subject has been discussed about 7 million times. Why they went to the 5 speed in 1981 and continue it to this day remains mystifying. 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. 7 mph. the wr250f goes about 85MPH tops. Mar 8, 2008 · The 13t will lower your top speed, but help your acceleration. 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. When I bump it up 500 to 9,500 max rpm it shows a max speed of 83. 8 mph. That’s exactly what I needed ! May 3, 2023 · 2016 YZ250X. 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. Only aftermarket items performance wise is an fmf fatty and fmf powercore 2. 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. If you went to the stock gearing of 14/50 you would get about 70. It calculates top speeds in all gears, based upon several input variables such as f Jan 21, 2014 · Posted January 21, 2014. Oct 11, 2011 · Posted October 12, 2011. . bkynp uofbm ttz sfumte iokkd cgkdi gsmyyy yjohr ujbpc bqiny |