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I do like my TouchDRO, lots of features and EASY to see from any angle.

I would imagine that the two 3 volt batteries are connected in series and provide 6 volts to the DRO and there may be internal circuitry to regulate to 5V, maybe even 3.3V. If it was me, I would cut the wires from 3 of the adapters and splice them into the 4th adapter so you now have one...

If anyone is looking for some reading material: https://www.ebay.com/itm/265946146692 FYI, this is not my ad, just passing info along.

Maybe these? https://www.rcgroups.com/forums/showthread.php?4207699-Two-New-V-type-Aero-Electric-spark-plugs Let me know if you need help purchasing them, I am on RC Groups often enough. Scott

Yea scary...Looks like the neutral contacts inside the outlet were arcing? Were you plugged into the top or bottom? What did the plug look like? Maybe the plug or outlet contacts were a bit old and tarnished? I believe, 15A outlets on a 20A circuit are allowed (in USA anyway) but not 20A...

Interesting...Like steve h said, when circle A is one quarter of the way around circle B, it has rotated 360 degrees around it's own center but it's outer edge has not yet traveled 1 circumference distance around Circle B, that doesn't happen for another quarter turn in this case.

I saw that one some years ago and was very intrigued by it. I have some info and animations somewhere in my archives but I can’t remember details on it. I’ll dig around a bit.

This one? https://www.homemodelenginemachinist.com/threads/draw-tech.29067/

Then Browse, By Category, Engines

I’ve added a Humbug, Vega 30, and maybe a Little Dragon to my “Need to Build” list. Thanks for your efforts!

Great...I end up on Outerzone enough as it is, now I'll never be able to leave.

Thanks much - There is so much cool stuff and not near enough time to look through in those old magazines, brings back many memories and it is very interesting to see so many parallels to today like titles of those old articles that could be written today. And also how many things that are...

Could you point me to which issues this is in? Please and thanks!

Hi animal, it is an MC-60 and it seems to do well with a descent useable speed range. I have a 3” pulley on the motor running through the original pulleys still allowing a bit of belt speed range changes. The setup shown seems to be the best overall for me. I have been sidetracked by...

As in:

“What is a youte?”

A lot of people use one viton O-ring instead, that is what I did (I don't have the number handy), you may need to adjust your groove size slightly.

I have been flying RC planes less and less so I sold some extra stuff and had a few bucks burning a hole in my pocket. I was surprised to see all of the copied homebuilt engines being sold on bang, ali and the like. I ordered the kerz version and it is what it is, but really runs well. I...

I was actually just thinking and wondering the same thing about the whole thimpfking thing.

So then we should expect to see counterfeits of these little engines available soon at half the price. Serious but not serious. I was surprised and amazed to see that the kerz hit n miss and the up vertical single ( and probably several others) were among the selections.