RC-BOSS
Posts: 151
Joined: 10/27/2002
From: Southwest USA, USA
Status: offline
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There are many things that effect the way a nitro engine runs and performs. Just to mention a few; Type and temperature of plug, nitro type, nitro content, oil type and oil content. There is also how you have the engine tuned such as to rich or to lean etc. There is also the environment in which the engine is run such as temperature, humidity, altitude etc. These all play a factor on how the engine should be tuned and how it ends up running and also performing. And of course, each engine reacts differently under different conditions.
When advice is requested or offered, it is very difficult to determine what the "fix" is without someone (an expert) physically being present and evaluating what the given situation is. So, easy suggestions are made that can hopefully remedy what the problem may be. A good starting point is to always look to a glow plug or fuel as the culprit. If those don't solve the problem, then you begin to dig deeper into what could be causing a problem.
There are no real advantages or disadvantages to running 20% or 30% nitro fuel. It depends on the oil content, whether natural or synthetic and it is mainly determined on what that particular engine "prefers". But generally, the engine will run slightly hotter with 30% nitro as a rule of thumb in comparison to 20% nitro but not always.
In conclusion, that is why MINDCRIME suggested changing the plug and trying a different fuel based on his experience with that particular engine.
We have had very little problems with the 2 speed for the Vulcan. It seems that most inquiries have been about the set screw loosening causing the car to shift differently or perhaps not at all. The easy fix for this is to apply a small amount of NON-PERMANENT Loctite (or similar product) to the set screw.
I hope I answered all your questions. Happy Modeling!
< Message edited by RC-BOSS -- 6/1/2006 3:50:28 PM >
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