8 Hour Mini-Racer Enduro!

[The Nutty Professor]

Here's the article:

http://www.roadracingworld.com/news/article/?article=35616

[Sidewalk]

I ran it solo in 2008 for charity. I ran it in a team this year for fun (didn't ask for money because of the economy). I look forward to 8H3.

Oh, and look for a 24 hour endurance in the future...

[FiveStarSky]

the program i race in does a 4 hour, I would like to try to do that some time, but i'm not sure how a mid would handle with 4 hours of hammering

[rene13]

the program i race in does a 4 hour, I would like to try to do that some time, but i'm not sure how a mid would handle with 4 hours of hammering

It could handle it, with an oil cooler, headbreather and a electric cooling fan.

[FiveStarSky]

got the first two, but where would you hook up a fan?

[rene13]

got the first two, but where would you hook up a fan? Off the battery with a switch and locate fan in front of oil cooler and head. So when the wind goes through the cooler it will cool it more and the residual air can cool the head a little bit.
I think Swheels had a fan on the head before not to sure.:dunno:

[FiveStarSky]

Off the battery with a switch and locate fan in front of oil cooler and head. So when the wind goes through the cooler it will cool it more and the residual air can cool the head a little bit.
I think Swheels had a fan on the head before not to sure.:dunno:

we had a post awhile back, and i did something similar, but if you put the fan infront of the oil cooler, at speed, the wind pushing through the fan will create drag, slowing the air speed going over the oil cooler.

[rene13]

we had a post awhile back, and i did something similar, but if you put the fan infront of the oil cooler, at speed, the wind pushing through the fan will create drag, slowing the air speed going over the oil cooler.
Just put it on the head.

[FiveStarSky]

but the same rules would apply, going 10mph your gonna have alot more windspeen than what a fan could put out.

[The Nutty Professor]

I know this "sounds" whacked but use a couple of computer fans with heat sinks. I have one in the garage I'll go take a photo in a minute and show you what I mean. The sink will or should draw the heat from whatever part you place it on. If you do use a fan make it a draw-through not a push through meaning the fan draws from the back side and won't obstruct airflow to the radiator on the front but will pull extra air through at slower speed. There are all kinds of things to consider or do with that idea. While I take the photo I'll try to remember a few and post them with the photo.

[FiveStarSky]

I know this "sounds" whacked but use a couple of computer fans with heat sinks. I have one in the garage I'll go take a photo in a minute and show you what I mean. The sink will or should draw the heat from whatever part you place it on. If you do use a fan make it a draw-through not a push through meaning the fan draws from the back side and won't obstruct airflow to the radiator on the front but will pull extra air through at slower speed. There are all kinds of things to consider or do with that idea. While I take the photo I'll try to remember a few and post them with the photo.

yeah i know what you mean, i tried that a while back, but i dont have a battery on my bike atm, and i couldnt find a way to hook the fan to the bike to get it spinning.

no need for photos. let me try to find that post we had a while back

[FiveStarSky]

here is the link
http://midbikenation.com/showthread.php?t=2350&highlight=computer

[The Nutty Professor]

A couple ideas to keep a 8 hour enduro a little cooler. Will it work :dunno: First photo's are of the heat sink I was talking about. The fan sits on the side will the bowl shape. The flat side you put in contact with whatever part you're trying to draw heat from. I know that most computer fans are weak but there are other solutions. Use small ducted motorcycle fans or high-performance computer fans which do draw a fair amount of air. I went outside and I keep forgetting how little room we have to play with. I think it can be used but after 5 minutes of looking I only hit on a few ideas but they're sketchy so I'll leave it for someone else to figure out.

The fourth photo I was showing how little room there is in the rear at least on my setup. I would have to use a Benelli Tornado type cooling system for rear flow but it can be done.

The last photo (Sorry for the sawdust...home projects have dust flying all over the place) shows how tight everything is. I need to adjust a few things that are touching each other or I'm going to end up with a failure of one or more parts.

[Blitz$M.Inc.$]

thats a p4 heatsink
you guys are wasting your time on this cooling
these are air cooled motors for a reason, they can hang
use a colder plug, 103 octane and synthetic oil if you want better heat properties

[The Nutty Professor]

Blitz I would tend to agree you except we're talking about endurance racing not sprint racing and this is from my experience with 1:1 race bikes. Before Suzuki switched to water cooling (OK I date myself) some guys I hang with were racing the Daytona 200 using the oil cooled motor which was more than proven but it was losing power over the last half of the race. We (I was just a helping hand) used every cooling trick they knew. A oil cooled motor in race conditions has a few things going on with it that water cooled motors don't. At a certain point the metal and oil reach heat saturation. The heat builds faster than a normal system can get rid of it. The motor then slowing begins losing power. Swheels had that problem at the Black Hills circuit if I remember right. An endurance race is a whole different animal. I wish I could find the Kevin Cameron article I read on this at least a dozen times it explains it simply and easily.

There are a few other options like I mentioned before and one is to cool the intake charge which somehow (Can't remember) makes the motor run cooler I think because the ignition is easier to obtain with less side affects (pinging and knocking which produces heat). Five-Star with the fuel tank you're using you could easily make it a cool can. Wrap it with a frozen cool pak like those used for injuries and you have a ready made cool can. See the photo for a Summit Racing cool can.

[Blitz$M.Inc.$]

i just think as long as you keep moving, it should be ok
your not gonna be tached out for hours, just a swift ride
you can use a lower heat plug and that will help
higher octane fuel will burn cooler
synthetic oil has better heat properties
all these things and maybe an oil cooler and your straight
unless you got a 13:1 motor on nos with a turbo, then i can see a problem