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13brv3
Joined: 11 Jan 2006
Posts: 76
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 Posted: Tue Aug 20, 2019 8:40 am Post subject: 912 radiator? |
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Greetings,
Is everyone paying $500 for the official Rotax radiator, or are there other popular options? There are a number of Ebay radiators in the $210 range that mention the 912, and they appear to be the right size, but none of them list the inlet and outlet diameter. One seller did state that his was 25mm inlet, and 30mm outlet, but I believe they should both be 25mm/1".
Aluminum radiators aren't exactly rocket science, and I'm tempted to give one of those a try, but it's frustrating that I haven't been able to get inlet and outlet sizes for any of the others that are listed. I get the impression there are only about 2-3 different radiators for all the dozens of listings, and maybe only a couple sellers, each with a few different aliases.
Thanks,
Rusty
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ceengland7(at)gmail.com
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| Posted: Tue Aug 20, 2019 9:54 am Post subject: 912 radiator? |
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On 8/20/2019 11:40 AM, 13brv3 wrote:
| Quote: |
Greetings,
Is everyone paying $500 for the official Rotax radiator, or are there other popular options? There are a number of Ebay radiators in the $210 range that mention the 912, and they appear to be the right size, but none of them list the inlet and outlet diameter. One seller did state that his was 25mm inlet, and 30mm outlet, but I believe they should both be 25mm/1".
Aluminum radiators aren't exactly rocket science, and I'm tempted to give one of those a try, but it's frustrating that I haven't been able to get inlet and outlet sizes for any of the others that are listed. I get the impression there are only about 2-3 different radiators for all the dozens of listings, and maybe only a couple sellers, each with a few different aliases.
Thanks,
Rusty
Why not just find an ebay special motorcycle rad for a 100+hp bike? Or
|
check a cycle salvage yard, if there's one near you. Drag certainly
isn't as big an issue as it was with the -3, so if you 'go big' (and
thin) & feed it with a sheet metal wedge diffuser, you pretty much know
it'll work. You can get silicone size adapters from/to almost any common
diameter now, so fitting size shouldn't be too much of an issue. If you
want to go with an auto rad, IIRC, a stock Honda Civic rad is about an
inch thick (might be a bit thicker) & has ~1" fittings.
Charlie
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rriley351(at)gmail.com
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| Posted: Tue Aug 20, 2019 11:23 am Post subject: 912 radiator? |
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I have some 582 radiators and engine and prop I nop longer have a use forChuck Riley 559-493-0338
RCR Light Aircraft former Titan dealer
On Tue, Aug 20, 2019 at 11:04 AM Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)> wrote:
| Quote: | --> Kolb-List message posted by: Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)>
On 8/20/2019 11:40 AM, 13brv3 wrote:
> --> Kolb-List message posted by: "13brv3" <13brv3(at)gmail.com (13brv3(at)gmail.com)>
>
> Greetings,
>
> Is everyone paying $500 for the official Rotax radiator, or are there other popular options? There are a number of Ebay radiators in the $210 range that mention the 912, and they appear to be the right size, but none of them list the inlet and outlet diameter. One seller did state that his was 25mm inlet, and 30mm outlet, but I believe they should both be 25mm/1".
>
> Aluminum radiators aren't exactly rocket science, and I'm tempted to give one of those a try, but it's frustrating that I haven't been able to get inlet and outlet sizes for any of the others that are listed. I get the impression there are only about 2-3 different radiators for all the dozens of listings, and maybe only a couple sellers, each with a few different aliases.
>
> Thanks,
> Rusty
Why not just find an ebay special motorcycle rad for a 100+hp bike? Or
check a cycle salvage yard, if there's one near you. Drag certainly
isn't as big an issue as it was with the -3, so if you 'go big' (and
thin) & feed it with a sheet metal wedge diffuser, you pretty much know
it'll work. You can get silicone size adapters from/to almost any common
diameter now, so fitting size shouldn't be too much of an issue. If you
want to go with an auto rad, IIRC, a stock Honda Civic rad is about an
inch thick (might be a bit thicker) & has ~1" fittings.
Charlie
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Chuck Riley
RCR Light Aircraft
Office : 559-224-8841
Cell: 559-493-0338
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13brv3
Joined: 11 Jan 2006
Posts: 76
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| Posted: Tue Aug 20, 2019 12:58 pm Post subject: Re: 912 radiator? |
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| ceengland7(at)gmail.com wrote: |
If you
want to go with an auto rad, IIRC, a stock Honda Civic rad is about an
inch thick (might be a bit thicker) & has ~1" fittings.
Charlie
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Hi Charlie,
The Civic is about double the size of the stock 912 rad, and just a little thicker. Seems like the two normal outlet sizes are 28mm and 32mm. They sure are cheap  There are probably other common small car and motorcycle rads that would work as well, but I'd spend an eternity trying to sort through them. If anyone knows of another auto rad that is close to the right size, and with 1" outlets, that will make the search easier.
I'm pretty sure I can make one of the Ebay 912 rads work, but it would sure be nice if I could get the sellers to answer a question. I'll mount the engine later this week with any luck, then start getting serious about a radiator when I see my mounting options.
Thanks,
Rusty
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ajones(at)dfn.com
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| Posted: Tue Aug 20, 2019 1:54 pm Post subject: 912 radiator? |
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Discontinue
On Aug 20, 2019, at 1:21 PM, Rudolph Riley <rriley351(at)gmail.com (rriley351(at)gmail.com)> wrote:
| Quote: | I have some 582 radiators and engine and prop I nop longer have a use forChuck Riley 559-493-0338
RCR Light Aircraft former Titan dealer
On Tue, Aug 20, 2019 at 11:04 AM Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)> wrote:
| Quote: | --> Kolb-List message posted by: Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com) >
On 8/20/2019 11:40 AM, 13brv3 wrote:
> --> Kolb-List message posted by: "13brv3" <13brv3(at)gmail.com (13brv3(at)gmail.com)>
>
> Greetings,
>
> Is everyone paying $500 for the official Rotax radiator, or are there other popular options? There are a number of Ebay radiators in the $210 range that mention the 912, and they appear to be the right size, but none of them list the inlet and outlet diameter. One seller did state that his was 25mm inlet, and 30mm outlet, but I believe they should both be 25mm/1".
>
> Aluminum radiators aren't exactly rocket science, and I'm tempted to give one of those a try, but it's frustrating that I haven't been able to get inlet and outlet sizes for any of the others that are listed. I get the impression there are only about 2-3 different radiators for all the dozens of listings, and maybe only a couple sellers, each with a few different aliases.
>
> Thanks,
> Rusty
Why not just find an ebay special motorcycle rad for a 100+hp bike? Or
check a cycle salvage yard, if there's one near you. Drag certainly
isn't as big an issue as it was with the -3, so if you 'go big' (and
thin) & feed it with a sheet metal wedge diffuser, you pretty much know
it'll work. You can get silicone size adapters from/to almost any common
diameter now, so fitting size shouldn't be too much of an issue. If you
want to go with an auto rad, IIRC, a stock Honda Civic rad is about an
inch thick (might be a bit thicker) & has ~1" fittings.
Charlie
---
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===========
FORUMS -
eferrer" target="_blank">http://forums.matronics.com
===========
WIKI -
errer" target="_blank">http://wiki.matronics.com
===========
b Site -
-Matt Dralle, List Admin.
rel="noreferrer" target="_blank">http://www.matronics.com/contribution
===========
|
--
Chuck Riley
RCR Light Aircraft
Office : 559-224-8841
Cell: 559-493-0338
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Richard Pike
Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee
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| Posted: Tue Aug 20, 2019 6:15 pm Post subject: Re: 912 radiator? |
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And Bob's yur uncle. I grabbed a used bike radiator for my MKIII/582 years ago for $70 and it has done me very well.
https://www.ebay.com/itm/Motorcycle-Parts-Replacement-Engine-Cooling-Radiator-For-Honda-CBR600RR-2003-06/173297685160?fits=Make%3AHonda&epid=4007796152&hash=item285958d2a8:g:BNoAAOSwIVxdR-pB
https://www.ebay.com/itm/Motorcycle-Aluminium-Replacement-Engine-Cooling-Radiator-for-Honda-VTR250-97-07/183743581775?hash=item2ac7f88e4f:g:2AIAAOSw-QBcLHCI
https://www.ebay.com/itm/Motorcycle-Parts-Engine-Cooling-Radiator-for-Honda-CBR600RR-07-15-CBR600RA-09-15/173760040889?fits=Make%3AHonda&epid=24028443614&hash=item2874e7cfb9:g:IuUAAOSwy5xdQWM8
https://www.ebay.com/itm/For-Honda-CB1000-94-95-Motorcycle-Parts-Aluminum-Cooler-Engine-Cooling-Radiator/183653486876?epid=19028435603&hash=item2ac299d11c:g:hKoAAOSwXWZdSUaX
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_________________
Richard Pike
Kolb MKIII N420P (420ldPoops)
Kingsport, TN 3TN0
Forgiving is tough, being forgiven is wonderful, and God's grace really is amazing. |
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baberdk
Joined: 23 Jan 2014
Posts: 53
Location: East Moline, Il
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| Posted: Wed Aug 21, 2019 6:21 am Post subject: 912 radiator? |
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30 mm means it's made in Austria and imported. That is 1 1/8 in American. A standard 1" heater hose will be snug.
Respectfully,
Dennis Baber
Cape Coral, Fl
baberdk(at)gmail.com (baberdk(at)gmail.com)
305-814-7218
Stay Curious
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byoungplumbing(at)gmail.c
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| Posted: Wed Aug 21, 2019 6:41 am Post subject: 912 radiator? |
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30 mm means it's made in Austria and imported. That is 1 1/8 in American. A standard 1" heater hose will be snug
Closer to
1 3/16
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13brv3
Joined: 11 Jan 2006
Posts: 76
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| Posted: Wed Aug 21, 2019 6:50 am Post subject: Re: 912 radiator? |
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Thanks, I looked at some bike radiators last night, and had never seen curved radiators before. In the mean time, I've all but confirmed that this radiator is very similar to the $500 Rotax unit, with 25mm inlet and outlet, so I think I'll give it a try.
https://www.ebay.com/itm/Aircraft-Drone-Rotax-912-914-Viking-Suzuki-Aeromomentum-ALUMINUM-RADIATOR/273379324254?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
Thanks. I think I'm all set.
Rusty
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jhauck36(at)outlook.com
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| Posted: Wed Aug 21, 2019 12:27 pm Post subject: 912 radiator? |
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1" = 25.4 mm
john h
mkIII
Titus, Alabama
From: owner-kolb-list-server(at)matronics.com [mailto:owner-kolb-list-server(at)matronics.com] On Behalf Of B Young
Sent: Wednesday, August 21, 2019 9:40 AM
To: Kolb List
Subject: Re: Kolb-List: 912 radiator?
30 mm means it's made in Austria and imported. That is 1 1/8 in American. A standard 1" heater hose will be snug
Closer to
1 3/16
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jhauck36(at)outlook.com
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| Posted: Wed Aug 21, 2019 12:29 pm Post subject: 912 radiator? |
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Are you running a 912UL or 9112ULS?
80 hp 912 requires very little cooling. I used to bypass my engine oil cooler completely in the winter in Alabama, summer in Northern Canada and Alaska.
912ULS was just the opposite. Took a lot of cooling to keep it happy.
john h
mkIII
Titus, Alabama
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13brv3
Joined: 11 Jan 2006
Posts: 76
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| Posted: Wed Aug 21, 2019 1:47 pm Post subject: Re: 912 radiator? |
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Interesting about the difference. Mine is an 80hp UL. I'm starting with the small oil cooler, and was trying to stick with pretty much the standard radiator size. I'm just a bit north of you in TN.
Rusty
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jhauck36(at)outlook.com
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| Posted: Wed Aug 21, 2019 1:57 pm Post subject: 912 radiator? |
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Higher compression ratio.
john h
mkIII
Titus, Alabama
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rickofudall
Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA
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| Posted: Wed Aug 21, 2019 2:41 pm Post subject: 912 radiator? |
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Check out the radiator from the Honda 1100 Magna. I used it with my 582 and put it on another. Both worked perfectly. If you're putting the 912 on a Mk 3 or a Kolbra it's one to look at.
Rick.
On Tue, Aug 20, 2019 at 1:04 PM Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)> wrote:
| Quote: | --> Kolb-List message posted by: Charlie England <ceengland7(at)gmail.com (ceengland7(at)gmail.com)>
On 8/20/2019 11:40 AM, 13brv3 wrote:
> --> Kolb-List message posted by: "13brv3" <13brv3(at)gmail.com (13brv3(at)gmail.com)>
>
> Greetings,
>
> Is everyone paying $500 for the official Rotax radiator, or are there other popular options? There are a number of Ebay radiators in the $210 range that mention the 912, and they appear to be the right size, but none of them list the inlet and outlet diameter. One seller did state that his was 25mm inlet, and 30mm outlet, but I believe they should both be 25mm/1".
>
> Aluminum radiators aren't exactly rocket science, and I'm tempted to give one of those a try, but it's frustrating that I haven't been able to get inlet and outlet sizes for any of the others that are listed. I get the impression there are only about 2-3 different radiators for all the dozens of listings, and maybe only a couple sellers, each with a few different aliases.
>
> Thanks,
> Rusty
Why not just find an ebay special motorcycle rad for a 100+hp bike? Or
check a cycle salvage yard, if there's one near you. Drag certainly
isn't as big an issue as it was with the -3, so if you 'go big' (and
thin) & feed it with a sheet metal wedge diffuser, you pretty much know
it'll work. You can get silicone size adapters from/to almost any common
diameter now, so fitting size shouldn't be too much of an issue. If you
want to go with an auto rad, IIRC, a stock Honda Civic rad is about an
inch thick (might be a bit thicker) & has ~1" fittings.
Charlie
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
===========
-List" rel="noreferrer" target="_blank">http://www.matronics.com/Navigator?Kolb-List
===========
FORUMS -
eferrer" target="_blank">http://forums.matronics.com
===========
WIKI -
errer" target="_blank">http://wiki.matronics.com
===========
b Site -
-Matt Dralle, List Admin.
rel="noreferrer" target="_blank">http://www.matronics.com/contribution
===========
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