Twin G-38 info on a Ziroli B-25
07-05-2008, 05:49 PM
#1
Twin G-38 info on a Ziroli B-25
I was wondering if any one has suggestions on a motor issue. I am able to get the motors within 150 RPMs of each other on the ground,but as soon I get airborne one of the motors seems to richen up some and fall out of sync. I am running Zinger 18x6-10 props and stock set up on the engines.I have thought about better quality props and possibly velocity stacks on the carbs. What size props should I try? Any other suggestions will be greatly appreciated.Thanks Keith
09-09-2008, 02:23 PM
#2
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RE: Twin G-38 info on a Ziroli B-25
Kieth,
Have you been able to solve your problem? At first glance I would say that you do not have enough prop for your G38's. I have run them in a couple of warbirds and found a 18x10 to work just fine. I am putting a couple of G38's in my 108" Mosquito with 19x10 narrow blade carbon props. My experience with twins is that they unload a lot more than a single engine configuration and that may be the problem you are experiencing.
If you have fixed your problem let me know. I don't want to have any issues with an engine out in the Mosquito. With a single tail, an engine out is almost certain death!
Cary
Have you been able to solve your problem? At first glance I would say that you do not have enough prop for your G38's. I have run them in a couple of warbirds and found a 18x10 to work just fine. I am putting a couple of G38's in my 108" Mosquito with 19x10 narrow blade carbon props. My experience with twins is that they unload a lot more than a single engine configuration and that may be the problem you are experiencing.
If you have fixed your problem let me know. I don't want to have any issues with an engine out in the Mosquito. With a single tail, an engine out is almost certain death!
Cary
