Added reply in a thread KTM is bringing back the 2 stroke big bore for 2016 4/27/2015 1:27 PM
I raced a 380SX (368cc actual displacement) back in '01 and it had the very best 2-stroke engine I've ever used, hands down. The '01 chassis, on the other hand, was the worst chassis I've ever ridden. If KTM brings back the 380SX, with their modern chassis, ... more »
Added reply in a thread 2 Strokers! What's your Fuel Situation??? 4/21/2015 8:13 AM
Oil viscosity and rpm/engine load determine the correct ratio. If you run a light viscosity oil, you need more oil than a heavy viscosity oil. Small displacement engines need more oil than large displacement engines. Sandy soils require more oil than ... more »
Added reply in a thread VP110 or C12 for 125 and 250 two-strokes? 4/13/2015 12:28 PM
Race fuel typically has a much lower distillation curve compared to pump gas. A lower 10% evaporation point improves throttle response.
Added reply in a thread VP110 or C12 for 125 and 250 two-strokes? 4/13/2015 6:26 AM
100LL and C12 have the same specific gravity. It is not an issue unless you use a castor based oil at low temps. All the criticism of avgas is totally unfounded and perpetuated by people that have never used it.
Added reply in a thread VP110 or C12 for 125 and 250 two-strokes? 4/9/2015 9:51 AM
If you have stock compression, the best bang for the buck is 100LL avgas. You can get it for as little as $3.95/gal in the atlanta area. https://www.airnav.com/fuel/local.html
Added reply in a thread Best looking stock bike of all time? 4/6/2015 6:43 AM
Based on wear of the original chain/sprockets/brake pads, my guess is less than 20 hours. I've raced it 5-6 times so it's probably at around 25 hours now.
Added reply in a thread Best looking stock bike of all time? 4/5/2015 8:10 AM
20 years ago, I thought the '95 CR's were the ugliest bikes on the planet. Then a few years ago, I ended up buying one and I still thought it was ugly. After staring at it in my garage for a few months something weird happened. I walked into the garage
Added reply in a thread wanted: 84 rm complete front end 4/1/2015 9:01 PM
I raced the RM 4-5 times last year. I did install Emulators and Race Tech .46kg springs in the forks, and a custom wound 5.2kg spring in the back. I'm running the stock pipe, which is still in excellent shape. I really love that bike. I haven't sold ... more »
Added reply in a thread wanted: 84 rm complete front end 4/1/2015 4:49 PM
I must have just gotten lucky, but the '84 RM front brake installed on my '82 is almost as good as a disc brake.
Added reply in a thread 1987 Honda CR250R complete restoration; lots of pics, advice appreciated 3/29/2015 4:04 PM
No, just bevel the edge. You don't need to lower the edge at all. Install the 87 governor in the 89 case, then push the governor into the case like it would do when the engine is operating. Watch the spring in that area of the case, and you will see ... more »
Added reply in a thread 1987 Honda CR250R complete restoration; lots of pics, advice appreciated 3/29/2015 10:53 AM
Relieve/chamfer the 89 cover spring pocket just enough to keep the spring from hitting it after the governor is assembled, and when using your hands to push it through it's stroke. It will take 2 or 3 attempts if you are conservative and go slow at the ... more »
Added reply in a thread Riding with pros, your stories.. 3/29/2015 5:59 AM
I attended the Gary Bailey School before the Lake Whitney National in 1981, and David was there assisting Gary. On the last day of the school, Gary had everyone practicing starts and David picked me out of the class and took me up in the hills to do ... more »
Added reply in a thread 1987 Honda CR250R complete restoration; lots of pics, advice appreciated 3/29/2015 5:34 AM
You will need to grind/relieve the power valve spring pocket to prevent the spring from rubbing as the powervalve swings through it's arc. Compare your old cover against your new cover, then carefully grind the 89 cover in the are circled in red.
Added reply in a thread Trampas 3/26/2015 7:28 AM
The first time I saw Chad Parker, he was racing 125 Intermediate at Mosier Valley. It was obvious right then that he had "it".
Added reply in a thread just picked this up today! 3/25/2015 3:57 AM
Based on your height and weight, a 5.2kg rear spring and .46kg front springs should be about right. Fortunately the .46kg front springs are a regular stock item for the 43mm forks at Race Tech. The plate I made raises the bars enough that taller bars ... more »
Added reply in a thread just picked this up today! 3/24/2015 7:48 PM
LOL Joe! I'm only 5'-18". Really though, even with that bar plate, the RM's cockpit is more cramped than any full size modern bike. Not only are the bar mounts way back on the top triple, the older bike frames have a lot more rake, which exasperates ... more »
Added reply in a thread just picked this up today! 3/24/2015 1:37 AM
Cannon Racecraft is a spring manufacturer located in Oklahoma. They can make any spring you want. Just measure the physical dimensions of your stock spring and tell the what rate you want. cannonracecraft.com I made a plate to move the bars forward and
Added reply in a thread At Some Point, This Has To Stop. 3/22/2015 6:56 AM
Read my mind. I've also heard many of the top 5 pros say the same thing when the tracks are "too easy".
Added reply in a thread At Some Point, This Has To Stop. 3/22/2015 6:27 AM
The sport has evolved into it's own worst problem. The trickle down effect from professional SX/MX racing has made it's way to grass roots amateur racing where home schooled kids spending their days with riding coaches, physical trainers and nutritionists ... more »
Added reply in a thread Windham on hoeft 3/21/2015 7:11 AM
I agree that suspension development has really increased the average speeds of the modern bikes on any given track, but the way that 4-strokes put the power to the ground is also a big factor in those increased speeds. 2-stroke peak power numbers have ... more »