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Mld 28cc props and rpm!!!!!!!!!

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Old 01-26-2009, 12:15 AM
  #1
leepord geko
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Default Mld 28cc props and rpm!!!!!!!!!

Hi everyone just want to see what everyone else is getting for readings!

Xoar 17x6= 8660rpm
alt=2200 feet
32/1 oil
third run
Going to test a 18x8 and then see what i get.
Will hover a AW yak 90-120 at 4 clicks below half throttle

Let see those numbers!!!!

Please include oil content, type of prop, and altitude please!
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Old 01-26-2009, 05:05 AM
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Default RE: Mld 28cc props and rpm!!!!!!!!!

Did you happen to weigh your engine?

I have a QQ 69" yak with an OS 1.20AX that spins that same prop at 9100rpm peak richended to 8800rpm for flight.

I'm sick of the mess from glow and would love to go gas with it. The specs suggest it is really light for it's capacity but i want to check with some real owners before i make a decision to buy it.
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Old 01-26-2009, 02:05 PM
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leepord geko
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Default RE: Mld 28cc props and rpm!!!!!!!!!

Hey Custom definatley a light engine i had to put my 4.8 ignition battery right by the ignition module and the receiver battery as close to the front of the cowl without rf interference! The plane came in at just over 10lbs, and those rpm numbers are only on its third run so there only going to get better! If your sitting on the fence go with the mld you won't be disappointed. The engine apperently according to the manual weighs 37 oz with muffler and ignition or 2.3lbs! Its a 72" wingspan also.

Later
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Old 01-28-2009, 09:08 PM
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Default RE: Mld 28cc props and rpm!!!!!!!!!

You guys may wanna try out the APC props... We got even better numbers from them. The gas engines would not mind the slightly heavier props.

Peace,
Steven Chao,
CERMARK
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Old 01-28-2009, 10:42 PM
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Default RE: Mld 28cc props and rpm!!!!!!!!!

Stock muffler 5600ft, APC 17x8 8300 rpm. MLD 28.
In a quick check I'm seeing 1000 RPM MORE from the MLD 28 than the SPE26. Thats a real good deal for $30
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Old 01-28-2009, 10:46 PM
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Default RE: Mld 28cc props and rpm!!!!!!!!!

Would go with apc but if you have seen the 18x8 theres no blade on them there not giving out the trust like a xoar gives out at a lower rpm, and try drilling out those props with a prop reamer lol good luck! But beside the point Steven the manual says 7500 rpm is the ideal speed but ive heard 8000 is a lot better so should i get a prop that suits 7500 or 8000rpm? But hey thanks for making such a great engine ive recommended it to anyone i know, and in my opinion much better than the evo 26cc!

later,
Colin
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Old 01-28-2009, 10:47 PM
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Default RE: Mld 28cc props and rpm!!!!!!!!!

You may also want to try the Vess sport prop. Very light, spool much faster than Xoar, and look great. Buy them directly from Vess, no mark up.
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