Difference spray on vs in bag. Spray on probably lets the petroleum distillate evaporate so quickly that it doesn't damage the motor (as much, I'd still avoid it). In the bag doesn't let the petroleum distillate evaporate, giving it more time to damage the rubber.bjt4888 wrote: ↑January 31st, 2023, 6:15 pmDanx,danxmemes wrote: ↑January 31st, 2023, 5:47 pm <SNIP>
Second thing, just kind of weird, is the way my lubricant is applied. This is the lubricant that I use: https://www.homedepot.com/p/Blaster-11- ... 529794-_-N
The interesting part is that whenever I directly spray it onto the rubber, all is fine, and I have tested this across over 10 rubbers. However, when I spray the lubricant into a bag and then do the same winding process, the rubber is significantly weaker and has a bunch of tears in it after only 2 winds. Just a weird thing that I wanted to share, but am I being superstitious or is there something else going on?
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Looking at the SDS sheet (in the link you supplied), hydrotreated light distillate is a petroleum product. This does not look like good rubber motor lubricant. Try using Armor All “Original Formula”. This is available at almost any automotive shop and from other online sources. We have used this lubricant for years and can reliably wind a motor aggressively to 80-95% of breaking turns six to eight times with good flying characteristics.
If you supply your flight log showing the rubber density and winding details for the past good flights and the recent not as good flights, we can provide more assistance.
Brian T
Jeff Anderson
Livonia, MI