Author Topic: Question on 160 DZ Prop,  (Read 644 times)

Offline Jim

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Question on 160 DZ Prop,
« on: 12, December 2016, 02:24:03 PM »
Hello guys,


1-2 weeks ago I was buying receive battery, and I saw an "ENGEL 18x11" prop for my 160 DZ.


Is this too big for YS 160 DZ? 


My fuel is 25% nitro, on APC 17X12 it was turning 7300


I tested ENGEL 18x11 and it turns the same, 7300


Any suggestion?


Thanks,

Offline Bill Michie

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Re: Question on 160 DZ Prop,
« Reply #1 on: 12, December 2016, 05:33:33 PM »
Was in use for a while, I used one on a 1.60 occasionally. (30% fuel). Good pull but a very different sound in the air, sounded more "raspy" than with the 17x12 APC. I think I was turning more rpm's than 7300 also, around 7800 IIRC.

Bill

Offline Mel Garlick

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Re: Question on 160 DZ Prop,
« Reply #2 on: 13, December 2016, 02:07:46 PM »
I used that prop a lot, still got two I think. Used to get 8200rpm on a 160 and 8500rpm on the 170's. That was with 30% nitro. 7300 sounds very low to me.

Mel

Offline Jim

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Re: Question on 160 DZ Prop,
« Reply #3 on: 13, December 2016, 05:19:13 PM »
Dear Bill and Mel,


Thank you for your reply,


This morning I did a Tappet adjustment, and I re-adjust the clearance, The RPM changed to 7800 :-))


I think if I need more rpm, then I have to move to 30% nitro.


With this 500 increase in RPM my Oxaley was pulling up very powerful comparing when rpm was 7300,


Many thanks,


Javad,

Offline Bill Michie

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Re: Question on 160 DZ Prop,
« Reply #4 on: 13, December 2016, 07:14:29 PM »
Yep, they're VERY fussy about tappet clearance; also it's a very small gap so requires accurate setting. "Should" be a routine maintenance procedure if the engine's being used regularly, or say, every 50/100 flights (can't remember the recommendation ATM).
I seem to remember the figure of 8200 somewhere along the line though normally richened by 200-400rpm from peak.

Regards,

Bill