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Old 06-15-2003, 12:18 AM   #1
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Default O.S. RG .21 running temps??

Just purchased an O.S. RG .21 as a back up for my 1/8 scale buggy, I will break it in tomorrow. does anybody know of a good temp range that will produce good power yet safe on wear? Thanks Jeff
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Old 06-15-2003, 03:03 AM   #2
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it depends on what head you have on it. if you have the head that is kinda low in mass the motor will run good between about 275 and 300. if you have the newer modle rg it will run good around 250. These temps are very high but otherwise the motor just bogs and cannot even make run time on a tank of fuel. The rg just has a poor cooling design but they do last a long time even running that hot.
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Old 06-15-2003, 10:41 PM   #3
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...how can you distinguish the newer model from the old one? The head is taller then with the newer model? ...
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Old 06-16-2003, 12:01 AM   #4
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The new head is soposed to be just like the head off of the rz witch is the kind of head that I modified to fit the rg so that is how I came up with the running temps.
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Old 06-16-2003, 05:57 PM   #5
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Mines seems to run best around 275-300 degrees too.
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Old 06-17-2003, 12:14 AM   #6
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Default Running temps

I bought a crazy nut head for it as well, any idea of what a good power/temp would be for this head engine combo???
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Old 06-17-2003, 12:43 AM   #7
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whats crazy nut's...website?
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Old 06-17-2003, 12:51 AM   #8
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I would not recomend a crazy nut head they stick out of the body of a buggy really far and are prone to snap off in a roll over and they cost as much as the ones that don't have that problem
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Old 06-17-2003, 02:35 PM   #9
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which would you recommend then?
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Old 06-17-2003, 06:47 PM   #10
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their are several nice ones the best being Odonnel but they are hard to get and I don't know if they make one for the rg otherwise kingheadz or nocer are very nice and very durable and they cost about the same as crazynut.
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Old 06-17-2003, 07:55 PM   #11
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kingheadz or nocer's website?
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Old 06-17-2003, 08:07 PM   #12
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www.kingheadz.com
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Old 06-18-2003, 03:42 PM   #13
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I have been running an rg this season to keep costs down. However I was dissapointed I needed to run it so hot to get it running right. That 250-275 range is what I was getting as well. Now that I know others are having the same "problem" I guess I won't worry about it.
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Old 06-25-2003, 12:54 AM   #14
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Well this is a little more reassuring.. I just got the Amain win this weekend with the RG, and it was running 260/265..

didn`t finish anything before the main, but leaned it out a bit and didn`t have any more problems, except the temp.
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Old 06-26-2003, 04:55 PM   #15
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I run a Hardcore head on my RG and it runs about 200 deg. and if you took that head off and put the stock one on it would be 320 deg.
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