RX-1 Supercharger in deep snow

[whitee]

Having issues with my s/crx1 in deep powder it cant breath when snow covers the hood, as soon as I lift the hood it wakes up again, it just wont idle until I pop the hood or clear all the vents. The other problem I had yesterday was snow would pack in around the s/c oil cooler after a little snow melts around it it is totally incased in snow with no air flow through it the reservoir overheats. anyone else having these issues? The only cure I can see is to get the hole saw out and cut up the hood or buy a mesh hood. any input?

 

[Colorado Yamaha]

I would go with a mesh hood, keep the original - and get the side panels also, they work great. I have R&M for all 3 and the sled works great, from 40 above to 35 below, different conditoins ~ no problems yet.

 

[snowy1]

just take the hood off , I have a screen hood but never use it, snow rolling over motor all day never misses a beat, every thing stays cooler and clutches are sealed up well enough that snow never gets in them.

 

[BlgsRX-1mtn]

Jason, after seeing your post about this, I went out and cut the nose pan down a little more to expose more on the oil resevoire and cooler. I never had this problem during new years but, I'll let you know if I see a difference in temps on the trail and if the larger opening prevents the front of the oil cooler getting choked off with snow. I'm heading up on Mon. so, if it works, I'll also post a picture of it when I get back from Cooke next Fri.

As for the sled starving for air, I wonder if eliminating the middle grille over the intercooler would alow the air inside. Hopefully the intercooler would melt any snow that hit it and keep the two openings clear enough for the intake to get some air. Another option would be to get a couple of vents like the ones I have on the wife's RMK. There are two 2" flowrites (one/side) in the shock wells along with hot/cold air vents on each pannel.

Jim

 

[HAMMER]

Water molecules displace oxygen molecules so an engine bay full of steam would choke out your engine same as no oxygen (creates an over rich air fuel condition). All of my Yamahas have done this, Mountain Max, Viper, and now Apex. Cold air intakes for the airbox behind the windshield cured this on the other two but the SCApex requires a different approach because you cannot get air to the SC intake from behind the windshield as the kit is supplied. What I did was use screen on all 4 side panel openings to keep the snow out, thus, no steam. Haven't tested this yet but I'm pretty sure it's going to work. If it doesn't I’ll rig up some sort of snorkel for the SC intake that will allow it to draw fresh cold air from behind the windshield. For cooling the reservoir & radiator without ingesting a ton of snow in the process I was thinking of trimming out a large section of the nosepiece and form fitting some expanded aluminum to the inside. Still haven't got around to it but I will get to it eventually. Most of this applies to the RX also, you need more fresh cold air, how you go about it is only limited by your own ingenuity.

 

[whitee]

rx-1 SC

well I just got back from Top Of The World today snow has setteled so my sled ran flawlessly. I am going to put the nose cover back on drilled full of holes covered with screen and that should help with the oil overheat issues, and I put SLP powder prefilter over the vents so I'll see what happens next time we get some more powder. Jim have fun in Cooke the snow is gettin pretty hard. Thanks for all the great input guys

 

[PwdrNut]

I have been having the problem of the S/C oil cooler icing up as stated above. I had already cut my nose piece down prior to the retrofit oil cooler. This does not help with ice build up. It may make it worse, but I don't know because I haven't run with another sled without the cut out. I bought a new nose piece in hopes that my modification was the problem. I am planning on covering the cooler with prefilter material in hopes that the snow won't freeze to the metal on the cooler. A solution to this would be great if someone can come up with it as I am tired of cleaning the cooler every time I stop.

 

[BlgsRX-1mtn]

What's strange here is mine reacts differently than PwdrNut's and Jason's (whitee). At least the last time out it did. I would see mid 160s for blower oil temps running down the trails at 60-90MPH with clean air hitting it. Evertime I hit the powder and it blew in the front my blower oil temps would drop to high 120s and stay there. The snow would build up in there bit it would act similar to the under foot heat exchanger and melt off the oil cooler.

Jason, I figured it was getting tracked up and settling with the warm temps. It's supposed to snow tonight and tommorow. Hopefully it will be a good one up top. If the sun comes out I'll probably head up the pass and ride around island lake area.

Jim

 

[BlgsRX-1mtn]

Well I got lucky and had some fresh powder to ride in on Tuesday. Sled ran great. Even with all the vents on the hood covered I was still able to get a 11.4 A/F reading on a WFO pull. Air temp ranged from low teens in the AM to low 20s at 2:00PM, the temp on the blower oil was reading from 120s on the trail to 160s while boondocking at slower speeds. The front would fill with snow but the oil cooler allways melted the snow right in front of it. Here's some pics the one is when we woke up at 6:00 AM Tues and the other was taken about mid day.

 

[snowraider]

no soup for you intake rather breath well n distress.

 

[whitee]

supercharger

Man BlgsRX-1 I have been in Cooke everyweekend and havent had sun yet exept for last weekend but the snow was hard. Looks like you had fun in the sun . It must just depend on snow conditions with the overheat/lack of air issue, when I had the problem the snow was really deep and heavy but I havent had an issue with it since then. thanks for the input anyone else with a S/C RX-1 have this issue as posted above? I do think the mesh hood would be the way to go regardless

 

[Colorado Yamaha]

Good info - my s/c oil temp runs about 32to 40 degrees every ride when the temp is below 20, with a windchill of about -5. In the Spring {March}, when the temp is 30ish, with no powder over the hood it will run about 110 to 140 riding on the trial at 30-40 mph.