Powderlites Nytro overheating??
- Thread starter Ultralord
- Start date
Never had my s/c'd Nytro get hot. Can't see it being an issue. I think a fan runnng all the time, won't last and may burn out and start a fire. Not good!!!!! Put on some ice scratchers and ride with them down on the trails.
U
Ultralord
Well-known member
not sure how the scratchers would help no heat exchangers
Sorry i must be confused. You are running a sled with No heat exchangers??? Good luck with that my friend. You think a fan will cool it enough??? Not a chance especially a boosted sled. You need under the tunnel heat exchangers at the very least, Some even come with the rails acting as heat exchangers. Are you sure your not running a quad??????
I only ran into 'cooling' issues (coolant light came on) when towing a sled, in late spring / summer...on basically concrete packed snow.
Packed a pile of snow on the radiator every couple miles..solved that.
Packed a pile of snow on the radiator every couple miles..solved that.
M
modsledr
Well-known member
Sorry i must be confused. You are running a sled with No heat exchangers??? Good luck with that my friend. You think a fan will cool it enough??? Not a chance especially a boosted sled. You need under the tunnel heat exchangers at the very least, Some even come with the rails acting as heat exchangers. Are you sure your not running a quad??????
Sorry, didn't see your first post about your Nytro. My bad.
Ultralord is also on a Nytro...stock radiator and no under tunnel heat exchangers I'm guessing.
Last edited:
That's sure funny, My Nytro has a heat exchanger at the front of my tunnel as well as a heat exchanger mounted up inside the tunnel running lengthways front to rear on the front right hand side. I just went out to my garage to confirm this. So my stock tunnel must be aftermarket?? Not!!!! And yes I realize i'm in the Yamaha section, And I also know they have a fan that blows on the radiator. I also no I've never heard my fan come while out sledding as I'm guessing the snow hitting my Heat exchangers under my tunnel must be cooling my motor enough!!! Duh
M
modsledr
Well-known member
Sorry again...I wasn't paying enough attention.
What I was talking about was an aftermarket U cooler style of heat exchanger...the CR and VA tunnels have U coolers and eliminate the little stock heat exchanger, and delete the radiator.
I'm pretty sure from talking to him in the past that Ultralord is keeping his stock tunnel (and therefore the stock exchanger) so is just talking about wiring the fan to run full time.
What I was talking about was an aftermarket U cooler style of heat exchanger...the CR and VA tunnels have U coolers and eliminate the little stock heat exchanger, and delete the radiator.
I'm pretty sure from talking to him in the past that Ultralord is keeping his stock tunnel (and therefore the stock exchanger) so is just talking about wiring the fan to run full time.
The fan is a high current draw... not sure all about the turbo setups, but I would assume you have added more electrical load.. fuel pump, controllers and what not. The handwarmers go to a reduced output when you have the fan on, and don't operate much below 4500 rpm.. That should say something as to the tightness of the Yamaha charging system as compared to the stock electrical load.
I don't see an issue with the fan burning out... but having a dead battery might be an issue, or a discharged one...
Though, if you run without the headlight, and have the fan switched it might not be a problem, though again, under 4500 rpm it might be....
I don't see an issue with the fan burning out... but having a dead battery might be an issue, or a discharged one...
Though, if you run without the headlight, and have the fan switched it might not be a problem, though again, under 4500 rpm it might be....
No need for sorry's as we are on here to learn things. At least I am. Yes you are correct on the tunnels with the u-cooler. I believe my buddies mcx turbo Nytro does not have the fan or the radiator but I could be wrong. I think all he has is the u-cooler which is good to like 400 Horse I believe. But I still don't think wiring the fan to run all the time will do much. It's a pretty small dinky fan,made of plastic. Maybe he can try it and see how it works, might work great or may cause problems. I think if Yamaha wanted it to run all the time they would have wired it that way though!! Great riding this year guys as the white stuff's a fallen!!!!!
Why not just add a temperature guage and a manual on/off switch. I look at my temp guage on my turbo probably more than any other guage and a nice Autolite guage is only like 50 bucks.
M5
M5
Hey Ultralord,
I run an Impulse kit on my Nytro with a stock tunnel (for now). I installed a digital temp gauge to see exactly where my temps were at. My last ride of the year was June 27 in Revy and it was fairly warm outside. My sled never got over 190 Degrees unless I was just sitting idling for a couple minutes. When I was running it up a hill the temp was about 155-165. Most guys will just put in a 50/50 antifreeze mix, make sure you run 60/40 like the sled calls for. If I remeber correctly the fan will kick on at about 160 degrees. I plan on running it hard this year so I went to the VE Tunnel with the 4 pass rear tunnel heat exchanger. This removes the front heat exchanger and the little rear (side) one. The main reason for the removal of the front one is to allow for more room so you can run 8 tooth drivers and a 2.5 lug track if you want. The other benifit of the VE is the coolant capacity, it should hold about another 1-1.5 liter of coolant.
If you do decide to run the fan all the time I do not see an issue with battery life since the battery charges when the sled is running. I have also seen guys with turbo sleds run 2 fans side by side. It depends on your riding style and needs.
Charging system:
Type AC magneto
Nominal output 14 V/less than 35 A at 5,000 r/min
gl
Motleyone
I run an Impulse kit on my Nytro with a stock tunnel (for now). I installed a digital temp gauge to see exactly where my temps were at. My last ride of the year was June 27 in Revy and it was fairly warm outside. My sled never got over 190 Degrees unless I was just sitting idling for a couple minutes. When I was running it up a hill the temp was about 155-165. Most guys will just put in a 50/50 antifreeze mix, make sure you run 60/40 like the sled calls for. If I remeber correctly the fan will kick on at about 160 degrees. I plan on running it hard this year so I went to the VE Tunnel with the 4 pass rear tunnel heat exchanger. This removes the front heat exchanger and the little rear (side) one. The main reason for the removal of the front one is to allow for more room so you can run 8 tooth drivers and a 2.5 lug track if you want. The other benifit of the VE is the coolant capacity, it should hold about another 1-1.5 liter of coolant.
If you do decide to run the fan all the time I do not see an issue with battery life since the battery charges when the sled is running. I have also seen guys with turbo sleds run 2 fans side by side. It depends on your riding style and needs.
Charging system:
Type AC magneto
Nominal output 14 V/less than 35 A at 5,000 r/min
gl
Motleyone
U
Ultralord
Well-known member
Sorry i must be confused. You are running a sled with No heat exchangers??? Good luck with that my friend. You think a fan will cool it enough??? Not a chance especially a boosted sled. You need under the tunnel heat exchangers at the very least, Some even come with the rails acting as heat exchangers. Are you sure your not running a quad??????
what i ment to say is there is no heat exchanger at that back of the tunnel I am not so worried about the coolant temp as I am underhood heat. I am trying to do this and have the sled look as stock as possible. I will do a tunnel next year My wife has me on a budget. I would like to get this sled done for under or at 20g. And yes I will have scratchers. I guess what I wonder is do I even need to worry about this. MOB has got me worried.
LOL...you will definitely need to vent the thing up front...helps all temps including coolant.
Venting? This should give you an idea....
My side panel on sledskiing's sled.
My sled, headlight hole vented.
Hood vented.
Crotch plastics vented.
This should give you an idea....My side panel on sledskiing's sled.
My sled, headlight hole vented.
Hood vented.
Crotch plastics vented.
Looks like you will be able to leave the thermals at home!!
lol no doubt.. should stay warm. hah
hahSimilar threads
