Timing questions

[Mendes]

A long time ago I bought a used Mac Minarelli 85cc engine, not really sure why, I guess it was just too good a deal to pass up and the fellow club member needed the cash. It's been sitting on the shelf for 15 years lol.

One day I was bored and got the crazy idea to convert the ignition from the weird hybrid magneto/jumpstart to a RCexl electronic ignition. I did the mod and finally got to run it today. It runs really nice, starts easy, idles and transitions well. The engine came with a Zinger 26x10 so that's what I'm running it with for now. I'm getting 5600 RPM and I feel like it's a little low, leaning didn't get me any more rpm so I'm wondering if I need to advance the timing.

Would advancing the timing get me more rpm or should I just leave it alone since it's running so nice. I think I'll get a big Decathlon to put it in so I probably won't miss the extra bit of power. I'm pretty pumped that it even runs to be honest lol

[Mendes]

Well I advanced it a bit and am now getting 5900 RPM, I think I'm going to just leave it the way it is. All in all I'm very happy I did the mod, it was alot of fun.

https://youtu.be/OrwYDc9DiyQ

[itizme]

runs nice and looks fantastic!

[Skier1960]

Well I advanced it a bit and am now getting 5900 RPM, I think I'm going to just leave it the way it is. All in all I'm very happy I did the mod, it was alot of fun.

https://youtu.be/OrwYDc9DiyQ

Wondering why two tanks on stand? Gas and Glow?

[Mendes]

Wondering why two tanks on stand? Gas and Glow?

Yep exactly, I've got a Saito .90 radial that's glow to test so I figured I'd get setup for it.

[Ramjet]

For a 85 it's turning pretty well , what does it weigh ..