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09-12-2007 06:05 AM  10 years agoPost 1
mpk000

rrNovice

USA

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What is the largest motor that will fit without any modifications? I am to the point of ordering the motor. Will an OS 50 Hyper fit? Thanks for the help.

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09-12-2007 01:05 PM  10 years agoPost 2
Dwight

rrApprentice

West Chicago, IL

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If you change the Caliber 5 motor mount it will. The OS 37 is plenty of power anyway.

Dwight

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09-12-2007 05:39 PM  10 years agoPost 3
mpk000

rrNovice

USA

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Dwight
Thanks

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09-13-2007 03:50 AM  10 years agoPost 4
dkshema

rrMaster

Cedar Rapids, IA

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With the C5 motor mount you could put the 50 in it, but then with 550 mm blades, you wouldn't be gaining a whole lot of performance from having a 50 in it. If you wanted to run 600 mm mains, you'd have to spring for a C5 tail boom and belt. Caliber 4 + boom + belt + 600 mm MR blades is more expensive than Caliber 5 since you don't have to buy anything extra for the 5. Well, you'd probably want to spring the $20 for the 15 tooth pinion to get the gear ratio to 9.1:1, but even at that, the C5 would still be cheaper.

If you have the hots for a 50 machine, buy the Caliber 5 instead of the 4. It's essentially the same price as the 4, as it comes WITH nice 600 mm CF blades whereas the 4 doesn't come with ANY blades.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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