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Old December 15th, 2017, 06:15 PM   #1
maverick9611
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el cheapo radiator guard install

why the newgen 250 has no guard to protect radiator is quite strange. buying one is worse. they are overpriced and selection is few and far between. so i made my own. i used shock absorber mounts(1/4-20 thread) i just cut into two pieces. the rubber is resting on the core. i have slight overhang widthwise into the tanks. horn relocated to coil support.( i run sticks so it was a free mount) the material is plastic 1/8"
perforated.




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Old December 15th, 2017, 06:20 PM   #2
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its winter in georgia, so cooling will be fine. summer will be true test on airflow thru guard.
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Old December 15th, 2017, 06:30 PM   #3
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My pregen has a nice black screen in front of the radiator. I wonder if you can put one of those on a newgen.
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Old December 15th, 2017, 06:48 PM   #4
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My pregen has a nice black screen in front of the radiator. I wonder if you can put one of those on a newgen.
the ones i saw were at least $60. jim do you have a pic of your screen?
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Old December 15th, 2017, 07:59 PM   #5
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It's the stock screen. This is about the clearest photo I have at the moment. You can just about see that it mounts to the frame of the radiator separately from the four radiator mounting bolts. They're not expensive: https://www.ebay.com/itm/87-07-KAWAS...dYCNg3&vxp=mtr
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Old December 15th, 2017, 08:04 PM   #6
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nice
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Old December 15th, 2017, 09:08 PM   #7
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I like this, I think Iím going to make one for my bike.
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Old December 15th, 2017, 09:27 PM   #8
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The thing that's surprising to me is that newgens don't have a screen.
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Old December 15th, 2017, 10:45 PM   #9
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Quote:
Originally Posted by Triple Jim View Post
It's the stock screen. This is about the clearest photo I have at the moment. You can just about see that it mounts to the frame of the radiator separately from the four radiator mounting bolts. They're not expensive: https://www.ebay.com/itm/87-07-KAWAS...dYCNg3&vxp=mtr
What material is it?

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Old December 16th, 2017, 03:04 AM   #10
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perforated plastic 1/8"thick. color black. my local machine shop gave a piece. i did see it being used as a return exhaust cover for ventilation.
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Old December 16th, 2017, 03:07 AM   #11
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nice to have horn hidden, i never liked it there anyways. besides it sounds weak. need to find the same kind i put on my zrx1200. it was quite loud.
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Old December 16th, 2017, 03:32 AM   #12
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the ones i saw were at least $60. jim do you have a pic of your screen?
https://www.ebay.com/itm/OEM-FACTORY...dYDXt6&vxp=mtr

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Old December 16th, 2017, 07:05 AM   #13
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What material is it?
The stock one is expanded steel in a thin steel frame.

Bill, the one in your link is about twice the price of the one in my link in post 5 above.
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Old December 16th, 2017, 07:38 AM   #14
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The stock one is expanded steel in a thin steel frame.

Bill, the one in your link is about twice the price of the one in my link in post 5 above.
Yep.

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Old January 12th, 2018, 12:09 PM   #15
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guard....

check out mc-master-carr for perforated metal sheets.....you still want max airflow, not reduced airflow...overheating, bad.


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Old January 12th, 2018, 02:45 PM   #16
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check out mc-master-carr for perforated metal sheets.....you still want max airflow, not reduced airflow...overheating, bad.


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link?
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Old January 12th, 2018, 06:37 PM   #17
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guard....

www.mcmaster.com will get you there.....
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Old January 30th, 2018, 04:57 AM   #18
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Quote:
Originally Posted by fred smoot View Post
check out mc-master-carr for perforated metal sheets.....you still want max airflow, not reduced airflow...overheating, bad.


Fred
This is on a better path, but these radiator guards can be highly restrictive with regard to airflow. My issue with the OP's guard is twofold: First, the holes are too large and can still let rocks through, and second, there aren't enough holes which will cause turbulent airflow which would significantly reduce the heat transfer efficiency of the radiator. All of these guards will reduce airflow. The question is how much before it becomes a problem. I would put a stock guard on my bike before an aftermarket one.
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Old January 30th, 2018, 05:35 AM   #19
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This is on a better path, but these radiator guards can be highly restrictive with regard to airflow. My issue with the OP's guard is twofold: First, the holes are too large and can still let rocks through, and second, there aren't enough holes which will cause turbulent airflow which would significantly reduce the heat transfer efficiency of the radiator. All of these guards will reduce airflow. The question is how much before it becomes a problem. I would put a stock guard on my bike before an aftermarket one.
Agreed.

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Old January 30th, 2018, 02:12 PM   #20
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the new gen doesn't have a guard at all. if it overheats I'll drill more holes it it. a aftermarket guard is $50 plus.
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Old January 30th, 2018, 02:33 PM   #21
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the new gen doesn't have a guard at all. if it overheats I'll drill more holes it it. a aftermarket guard is $50 plus.
yeah!

https://www.revzilla.com/motorcycle/...SABEgKAa_D_BwE

Ouch!!!
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Old January 30th, 2018, 02:37 PM   #22
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the new gen doesn't have a guard at all. if it overheats I'll drill more holes it it. a aftermarket guard is $50 plus.
Oh. Well, it might not be too difficult to adapt a pre-gen guard. Maybe easier than starting from scratch. Just sayin'.

https://www.ebay.com/itm/2003-KAWASA...!US!-1&vxp=mtr

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Old January 30th, 2018, 03:59 PM   #23
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that's not el cheapo for sure. come springtime, i'll drill it to death.
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Old February 24th, 2018, 08:27 AM   #24
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more holes
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Old February 24th, 2018, 08:38 AM   #25
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more holes
Well, since Ninja's run much cooler engine temperatures than is healthy (my guess is about 130-150 degrees. You'll at least get your engine closer to a healthy operating temperature.

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Old February 24th, 2018, 10:14 AM   #26
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the real question bill is why on new gen did they leave off the radiator guard?
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Old February 24th, 2018, 10:23 AM   #27
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I imagine it was to save a buck or two.
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