| Author | Message | ||
     Duggram |
When I was at E.B.R I asked about putting the 1190RR fairings and radiators on my 1125. The estimate I got was outragous. But this last week I got a WR450F and I couldn't help but notice the radiators. They sit on the side like the 1190's. So my question is, could you use the WR450 radiators on an 1125 with the 1190 fairings? But I don't know how to figure this out. Would they be able to do the job? I'd sure like to use the 1190 side panels. | ||
| Barker |
Does the 450 have 2 or 3 radiators? I thought the 1190 had three $5k custom forward radiators. The 1125RR had the 2 long forward facing side radiators like some dirt bikes. 1125RR on left. 1190RR right.  the 1125RR radiators look like they might be an off the shelf item more than the 1190. (Message edited by barker on October 19, 2010) | ||
| Rodrob |
450 VS 1125. They would not handle the heat output. | ||
| Barker |
RodRob are you factoring in the 1125's large oil cooler into you heat dissipation comparison? | ||
| Duggram |
Barker, the 450 has two radiators. I just don't know how to figure something like this. Would you have to figure in the oil radiator too. It's not like I'm going to run right out and do this. But if it's possible, I might try it. | ||
| Hughlysses |
Radiator capacity chiefly depends on the heat transfer area. One way to guesstimate it would be to measure the stock 1125 radiators (height, width, and thickness) and compare those measurements to the 450's radiators. Other things factor into the capacity (size, number, and shape of tubes, spacing and type of fins) but this should give you an idea if it's workable. My SWAG is that the radiator cooling capacity is pretty much directly proportional to the engine power output. And since the 1125's got about 4 times the power of the 450, the 450's radiators are going to have 1/4 of the cooling capacity needed by the 1125. I'll bet you can find some other off-the-shelf radiator that can be adapted, but I suspect it's going to have to be from a bike with similar power and displacement to the 1125. | ||
| Type911 |
What about Rads from a TL1000R? I was thinking of trying this route. fans mounted on the back side.   | ||
| Xl1200r |
The reason the radiators aren't on the front of the bike is because the engine is too far forward in the chassis. The 1190 indeed uses 3 custom radiators. None of the square in shape. The two on the sides are parallelograms and one in the bottom center is more or less and upside down triangle whose sides follow the contour of the belly of the bodywork. They basically had to use these far-out shapes to fill out every possible space with radiator in order to get the body work as narrow as it is. Using the 450 rads would result in something more like the 1125RR shown above, which is just as wide as a regular 1125 and won't allow the use of the 1190 bodywork. I'm also not sure how effective they would be in traffic or at street speeds, but that's for someone with more engineering background to tackle. I think it's be a fun project, but I'm betting if Erik Buell Racing could have found a less expensive off the shelf solution for the 1190 they would have used it. | ||
| S21125r |
Not sure why I remembered this... but Highscore had a post back in December that talked about the Helicon cooling system being intentionally sized so it could run smaller radiators by use of a high flow water pump and fans that run almost continuously - similar to F1. | ||
| Gsxrguy |
The stock cooling system is designed for a stock bike. The stock bike runs pretty lean and hot, after tuning it runs much cooler and I'm willing to bet flow would be much higher with a forward facing radiator. A smaller radiator would be feasable | ||
| Stirz007 |
Dugg - another option is to keep stock radiators and get 1125 Daytona bike race body kit. M. Richter can set you up for about $1800 last time I checked. You will lose the fans and about 10-15 lb total weight, but lots cheaper than trying to go full 1190 route. You do have to stay in motion, though, to get the air flow across the radiators. | ||
| Duggram |
Stirz, I was at the E.B.R shop in August. The price on their Flexiglass ram air side panel kit was about $1500 at the time. Seems like the best option. However, if you call Flexiglass Trev (owner) will tell you about his idea to make new side panels that look like the 1190 but use the stock radiators (with no fan of course, which is fine, they're for racers). BTW if you had a narrower bike because of skinny side panels you could also cut down the top fairing like the 1190. I have an old top fairing and considered this but I think it would look awkward with the stock width side panels. Just picture the above 1125RR with the 1190RR's top fairing. Doesn't work, but I sure would like to use it. | ||
| Duggram |
Forgot to mention the reason I think the narrower bike is important. At Road America the 1190 is 15 mph fast on top end than the 1125. For sure some of this is due to hp. But I was told it's more so because of streamlining, hence my desire to cut down the top fairing and find some kind of solution for the wide sidepanels. | ||
| Stirz007 |
Dugg - $1500 sounds a lot better than $1800 (well: a little better, anyway). Thanks JM |
