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Forum: Glow Engines

08-02-2020, 02:19 PM

Replies: 2,647

UMS Evolution Radial Care and Operation

Views: 522,688

Posted By OldBill

43# heavyweight

I am hoping it doesn’t exceed 40# but I’m not counting on it 🤔.

Forum: Glow Engines

08-02-2020, 05:13 AM

Replies: 2,647

UMS Evolution Radial Care and Operation

Views: 522,688

Posted By OldBill

Townsend ring

https://cimg9.ibsrv.net/gimg/www.rcuniverse.com-vbulletin/2000x1504/65f5ce2e_627b_418f_a98a_7f64a6492232_44c097b3b681673afbe9489e86e2bf1e0a25ec7d.jpeg
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Forum: Glow Engines

08-02-2020, 05:08 AM

Replies: 2,647

UMS Evolution Radial Care and Operation

Views: 522,688

Posted By OldBill

The Ziroli is a bit more “portly” than the Flair

I have read that the Flair kit could be built as lightly as 25#. I will be following the Ziroli plan very closely. There will be very little modification unless I build it as a Super. It would look...

Forum: Glow Engines

08-01-2020, 08:33 PM

Replies: 2,647

UMS Evolution Radial Care and Operation

Views: 522,688

Posted By OldBill

UMS 9-115 Ziroli 87” Stearman

Does anyone know of a modeler using this combination?
this Ziroli Stearman is commonly built at a flying weight of 35#. The UMS has an output of 7.6 hp, swings a 24/10 at 6000 rpm to produce 12.5...

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