[Lonewulf71]

I saw something in passing on FB that Walker Fowler said about his quad and the idle speed, but now I can't find it. Basically what I got from the comment was that he runs the idle speed higher to keep from stalling during a XC race.

So does running your idle speed faster/higher help keep from stalling the motor during racing? Obviously Walker is racing a 4-stroke, but I would think the principle would be the same. Also is there any danger in running the idle speed too high/fast?

Thanks, Aletha

 

[american opel]

with the 4 stroke's if they stall when they are hot,you might as well grab a beer and wait a minute.to me the idel speed is personal preference.i like to keep mine as low as possable.to me i like to let it warm up before i put any R's in the motor.

 

[motofool250r]

the only danger in running up your idle speed is if you fall off the bike will idle and move without you, so if your under it and your face is inbetween tire and ground it will chew on your face until it runs out of fuel. or if you hands are near the chain in a crash it will just keep going.

now if you run a tether switch it would die when you fell off.

thats the only downside i can think of idling it up. it could be useful in the race though.

 

[killer_250r]

This is a popular mod for Xc 450s like the FI yammie and 450r with rekluse clutches. Like everyone stated before, helps stop stalling on hot four pokes lol

 

[DnB_racing]

I saw something in passing on FB that Walker Fowler said about his quad and the idle speed, but now I can't find it. Basically what I got from the comment was that he runs the idle speed higher to keep from stalling during a XC race.

So does running your idle speed faster/higher help keep from stalling the motor during racing? Obviously Walker is racing a 4-stroke, but I would think the principle would be the same. Also is there any danger in running the idle speed too high/fast?

Thanks, Aletha

different riders and different conditions apply ..Some MX guys set it so it doesn't idle at all, to have more motor breaking going into corners and better throttle response coming out of corners from having no loading up....
XC guys that have it setup with lower gears will set up idle to be higher so you can lug around tight spots without stalling... but there is more possibility of some incomplete combustion, your ignition and plug and carb has to be performing to its potential or there can a bog when accelerating quick

 

[Lonewulf71]

the only danger in running up your idle speed is if you fall off the bike will idle and move without you, so if your under it and your face is inbetween tire and ground it will chew on your face until it runs out of fuel. or if you hands are near the chain in a crash it will just keep going.

now if you run a tether switch it would die when you fell off.

thats the only downside i can think of idling it up. it could be useful in the race though.

Well I kinda think that's what happened with Walker Fowler. I think it must have been a twee that someone reposted. I think he must have crashed and the quad took off down a hill or something. I've never paid attention, but I would think the XC racers would be required to run a kill switch.

The main reason I was wondering is that on my Duncan MX motor (88) if you stomp on the rear brake too hard the motor will die. Generally I'm moving fast enough that the motor picks back up and keeps going, but I have stalled the bike out doing that. When I raced my new BDT motor (86-which is built for woods racing), I could stomp on the rear brake in a sharp corner to bring the back end around, and pull the quad right out of the corner. It made a huge difference in how fast I was in the tighter woods sections.

I didn't know if it's the way the motor is built that would make the difference or if idle speed could make that big of a difference. I was just curious. The 88 also has a smaller carb on it, 3mm6 vs and 38 mm airstriker on the 86.

 

[american opel]

i don't care how high you have the idel.if you lock up the rear it's going to stall..

 

[motofool250r]

its a really easy thing to change to see if you like it or not aletha, screw the idle screw in go for a ride and see, if you dont like it turn the screw back out to current position.

 

[motofool250r]

i don't care how high you have the idel.if you lock up the rear it's going to stall..

with the clutch engaged sure, pull clutch in and stab that brake!

 

[Lonewulf71]

Some good info, thanks guys. I don't have any experience with woods racing at all. Last year was the first year, and I was basically riding my MX quad with woods tires on it. They are having practice tomorrow and part of the GP course will be open, so I will have a chance to play around. I never really got to ride the 86 other than during break in until I raced it.

If anyone has any woods racing tips, throw 'em at me . 99.5% of the time I'm the only 2-stroke out there. The last race I was talking to some guy and mentioned I was riding a 2-stroke. He was like 'Wow, I bet that thing is loud' :huh: I'm thinking, Dude...you're in the vet line so your at least 30+....and you don't know what a 2-stroke sounds like, lol. Yeah it's so loud, I have to 'hug' the quad to feel how it's idling/running during warm up because I can't hear it over all the back firing 4-pokes :lol:.

 

[acecarlos]

different riders and different conditions apply ..Some MX guys set it so it doesn't idle at all, to have more motor breaking going into corners and better throttle response coming out of corners from having no loading up....
XC guys that have it setup with lower gears will set up idle to be higher so you can lug around tight spots without stalling... but there is more possibility of some incomplete combustion, your ignition and plug and carb has to be performing to its potential or there can a bog when accelerating quick

x2...all the MX quads we had anything to do with, we set them not to idle, just as Barry stated, dive deeper into the corners.

Well I kinda think that's what happened with Walker Fowler. I think it must have been a twee that someone reposted. I think he must have crashed and the quad took off down a hill or something. I've never paid attention, but I would think the XC racers would be required to run a kill switch.

The main reason I was wondering is that on my Duncan MX motor (88) if you stomp on the rear brake too hard the motor will die. Generally I'm moving fast enough that the motor picks back up and keeps going, but I have stalled the bike out doing that. When I raced my new BDT motor (86-which is built for woods racing), I could stomp on the rear brake in a sharp corner to bring the back end around, and pull the quad right out of the corner. It made a huge difference in how fast I was in the tighter woods sections.

I didn't know if it's the way the motor is built that would make the difference or if idle speed could make that big of a difference. I was just curious. The 88 also has a smaller carb on it, 3mm6 vs and 38 mm airstriker on the 86.

Your BDTM engine has a lot more 'grunt' down low and through the mid, it should pull as you stated it does over the DR National engine. For Woods, we may even want to change your Dome, and get you even more 'Grunt'...Carlos