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Old 04-10-2013, 11:31 AM   #46
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Is this 1 US fluid ounce? From a drugstore or from Klotz or Novarossi?
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Old 04-10-2013, 11:57 AM   #47
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Actually I use medicine measure cups from a pharmacy and it is 1 fluid ounce to a gallon, and its just the nova rossi 1n1 oil that they sell.
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Old 05-12-2013, 12:23 AM   #48
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Hi I just picked up the break in version of this engine. Anyone know whether there are any further "break in" transition periods before I floor this thing? Or is this thing literally race ready?
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Old 05-12-2013, 02:02 AM   #49
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Originally Posted by alexlok View Post
Hi I just picked up the break in version of this engine. Anyone know whether there are any further "break in" transition periods before I floor this thing? Or is this thing literally race ready?
When we get a pre-run version of an engine, we run a whole bottle through the engine rich on the track, and then start race-tuning it from there. Even though the engine is technically "pre-run", it still has some breaking in to do. Just keep that in mind and make sure not to run the engine too lean. Also keep an eye on the compression of the engine.
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Old 05-12-2013, 02:36 AM   #50
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When we get a pre-run version of an engine, we run a whole bottle through the engine rich on the track, and then start race-tuning it from there. Even though the engine is technically "pre-run", it still has some breaking in to do. Just keep that in mind and make sure not to run the engine too lean. Also keep an eye on the compression of the engine.

Thanks Brandon. When you say "bottle" you mean nitro re-fill bottle and not just a mere tank-full right?
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Old 05-12-2013, 09:37 AM   #51
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Thanks Brandon. When you say "bottle" you mean nitro re-fill bottle and not just a mere tank-full right?
yes
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Old 05-12-2013, 10:44 AM   #52
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Hi guys,

Normally a 500cc bottle is about right. However I found with the new Virtus, you need more time for the break in. If you only use 1 fuel bottle it will not be ready to perform at its best. I would go through the first bottle really on the rich side. Keeping it around 190-205 degrees. For the second bottle keep it around 210-220. Always run the bottom rich in this process as well. One the 3rd bottle you can start running it with a rich race setting. By the fourth bottle you can run it full out.

This is just what I found when I did my first ones.

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Old 05-12-2013, 11:01 AM   #53
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Do any of you use the included venturi restrictors? If yes, any recommendations which one to use?
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Old 05-13-2013, 01:12 AM   #54
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Hi guys,

Normally a 500cc bottle is about right. However I found with the new Virtus, you need more time for the break in. If you only use 1 fuel bottle it will not be ready to perform at its best. I would go through the first bottle really on the rich side. Keeping it around 190-205 degrees. For the second bottle keep it around 210-220. Always run the bottom rich in this process as well. One the 3rd bottle you can start running it with a rich race setting. By the fourth bottle you can run it full out.

This is just what I found when I did my first ones.

DJ Apolaro

Thanks DJ for your advice. Just to clarify, when you say the third bottle is run with a "rich race setting" do you mean to still run it rich? Or can start to lean it out for a race setting?
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Old 05-13-2013, 06:57 AM   #55
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You are definitely leaning it out for racing but just running it on the safer side a little rich. you are not running it on the extreme side yet.

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Old 05-13-2013, 07:16 AM   #56
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can someone kindly advise what are the sizes of both front and rear bearings?
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Old 05-13-2013, 08:21 AM   #57
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I believe standard 14.5x26 and front would be 7x19x5

But the main bearing is different in shape that a normal bearing would not fit.
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Old 05-13-2013, 10:23 AM   #58
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Thanks. This is why it scares me away since Flash, the bearings are very expensive and proprietary. I would go for something easy.
1/8 is difficult to get popular now a day. For a beginner, it is easy to spend at least $2 to 3000 US to be competitive in terms of gears.
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Old 05-13-2013, 03:19 PM   #59
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Up to the flash it is a very normal bearing you can find at TKO, Boca etc. for much better prices. The keep-on and the Virtus has a small edge in the cranckase and need to fit a bearing with a smaller (in width) inner brace. Handy people can mill out the edge from the crankcase and fit a normal bearing. I truly believe this has no real technical function than only protecting their after market in bearings.

But probably other RC bearing manufacturers have made a ready to fit bearing for these latest model engines. Just look arround.
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Old 05-13-2013, 05:39 PM   #60
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Thanks, milling is not the option to buy it
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