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Question: Can I use glow engines to power my VMAR PC9 & Texan II 06-12 ARF? If so what sizes are recommended? Any tips you can suggest on what I need to plan for?
Answer: Yes the VMAR PC9 & Texan II 06-12 ARF can be powered with glow engines. We suggest glow engines be .06 to .12cu. in. Please note that this model has been intended primarily for Electric Flight and does not come with a tank or engine mount. It does however utilize the VMAR power module system which makes it easier to modify the propulsion system to glow.
Tips on use of glow power:
1) We recommend two stroke engines for this model. Four stroke engines tend to be bigger and heavier.
2) You will need to plan your fuel tank and engine mounting system with careful consideration for physical space particularly if you wish to try to install the engine so that you can use the cowl
3) Use Pacer Finishing Resin and a brush to throughly seal any exposed wood, particularly that of the firewall, the power module forward firewall and the attachment area on the wing. Also the wing saddle area. The exhaust from glow engines contains lots of hot vapourized and liquid oil residue. Although most of this oil will be channeled out in the exhaust, some oil will inevitably get on the model itself and will be absorbed by any unsealed wood. Oil can weaken glue joints and the wood itself.
4) Glow engines tend to produce considerable vibration particularly if the propellor is not balanced correctly. Take particular care to balance your propellor. Vibration can cause fuel feed problems, lean runs and engine cut off as well as structural failure, control surface flutter and/or separation and is very damaging to servos. It is very important to keep vibration to a minimum.
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