Best available 20 hydro engine?

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What’s the best available at the moment? Thanks

Give Stu Barr a call and see if he can get one of these for you ....he more than likely has the standard one in stock....and could possibly order the GPX kitted one for you.
You can find his contact info in supplier/manufacturer section under CMB Engines/Crapshooter Boats.

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Shawn, The CMB Beta and hopefully soon the K-21 from Al Hobbs are both competitive 21's. Al also has the AA 21. OS have a marine version that is a converted onroad car motor with a cooling head available through Joern Markeset (sp?)
 
Give Stu Barr a call and see if he can get one of these for you ....he more than likely has the standard one in stock....and could possibly order the GPX kitted one for you.
You can find his contact info in supplier/manufacturer section under CMB Engines/Crapshooter Boats.

View attachment 323810
Didn't know Stu had a website..

And that is the Australian supplier website Hobby Supplies Australia.
Tony Grinter.
 
the OS 21 speed engine track has similar performances to a Novarossi 35+21 but with better reliability, the crankshaft with DLC coating is indestructible, but the engine without modifications is made to operate 25% nitro fuel, the latest model 21 marine 05 requires a very long break-in to avoid tightening
 

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