Mercury ESC Swap and Mods

After the last flying session where the motor quit on me I've made some mods that'll sort her out totally. Don't forget to SUBSCRIBE for regular Build and Fly videos using this link ruclips.net/user/CliffHarvey...
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[@CliffHarveyRCPlanes]

I think my little changes should sort the big bird out 👍🤔

[@downwindchecklist6567]

Very elegant solution with the vents in the bottom. The spoon idea is really nice. You mention you want air outlet, but wouldn't you also need more air inlet? Hopefully with the two vents you should get enough air circulating in and around the esc. Thx for sharing!

[@CliffHarveyRCPlanes]

The inlet is pretty big anyway Andrew, if you don't have a larger exit the air is stagnant

[@garygullikson6349]

Should run cool enough as it is now. You could enlarge prop adapter hole to admit more cooling air. A smaller diameter prop would help reduce amp draw, and heat, if you can afford some thrust reduction. Increasing exhaust outlet size , to let more hot air out, may be needed.
I fried the motor and plastic motor mount in my Dynam WACO doing aerobatics on really hot days.

[@CliffHarveyRCPlanes]

Hi Gary, I've increased the outlet underneath as well as moved the esc forward off the firewall, all will be well 👍🤔

[@MarkCroucherRC4fun]

Think those modifications will do the trick, no expert on electric (or anything for that matter😊) but as I understand it the exit area needs to exheed the intake area.

[@CliffHarveyRCPlanes]

I think so Mark, not enough airflow through the cowl primarily plus a bigger esc will sort it 👍

[@JeffinLowerAlabama]

Cliff that should help keep things cooler. Jeff in LA USA

[@CliffHarveyRCPlanes]

I reckon so Jeff 👍

[@bobflyman]

After the ESC fail with my Lidl EDF build someone suggested that because of the P factor my scoop behind the prop wouldn't be very efficient. I don't know? He also mentioned that fact that manufacturers put heat shrink around esc's doesn't help. Good point. I uprated to a 40A but have exposed the aluminium by taking a blade to the shrink and it's fitted outside in the airflow now. Doesn't look as pretty but who can see it, yours is inside anyway! Should be more efficient anyway?

[@CliffHarveyRCPlanes]

Good idea Bob, I'll give it a go first and see what happens 🤔👍

[@IansRCExploits]

Nice job Cliff, should run a lot cooler now 😀👍

[@CliffHarveyRCPlanes]

Thanks Ian, especially in this 25c like we've had today 😁👍

[@IansRCExploits]

Yes Cliff, hot one today 😀👍