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Weed Eater Featherlight Minimum & Maximum RPM #4535040
10/05/17 10:52 PM
10/05/17 10:52 PM
Joined: Apr 2017
Posts: 12
Planet Earth
TurboDieselPoint Offline OP
TurboDieselPoint  Offline OP
Joined: Apr 2017
Posts: 12
Planet Earth
Hi All,

I have a "Weed Eater Featherlight" 25cc 2 cycle, much like the one in the link below, which I will be converting to run on compressed air for my controls project. Have a quick question for you all:

When it is running properly on gasoline, approximately how fast will the engine be running at idle and at full throttle?

https://www.amazon.com/dp/B019V9EUW4/ref...la-310628748614

Thank you so much!

TurboDieselPoint

Last edited by TurboDieselPoint; 10/05/17 10:52 PM.
Re: Weed Eater Featherlight Minimum & Maximum RPM [Re: TurboDieselPoint] #4535082
10/06/17 01:26 AM
10/06/17 01:26 AM
Joined: Dec 2016
Posts: 6,239
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,239
Waco, TX
I'm guessing 7,000-8,000 rpm?
Maybe more. I know when the string breaks off, the RPM's get really, really high.

You can get small handheld tachometers for pretty cheap.

Curious - - why compressed air?
How do you plan to lubricate it?


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Weed Eater Featherlight Minimum & Maximum RPM [Re: TurboDieselPoint] #4535087
10/06/17 01:38 AM
10/06/17 01:38 AM
Joined: Dec 2002
Posts: 40,887
'Stralia
Shannow Offline
Shannow  Offline
Joined: Dec 2002
Posts: 40,887
'Stralia


Max spindle speed 10,000RPM, so 7-8 sounds right. manual

Re: Weed Eater Featherlight Minimum & Maximum RPM [Re: TurboDieselPoint] #4535097
10/06/17 02:46 AM
10/06/17 02:46 AM
Joined: Nov 2009
Posts: 4,942
Houston, Texas
motor_oil_madman Offline
motor_oil_madman  Offline
Joined: Nov 2009
Posts: 4,942
Houston, Texas
Cool, how many psi will it take to blow the top end off. lol


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: Weed Eater Featherlight Minimum & Maximum RPM [Re: TurboDieselPoint] #4535242
10/06/17 09:00 AM
10/06/17 09:00 AM
Joined: Apr 2009
Posts: 2,933
Canada
boraticus Offline
boraticus  Offline
Joined: Apr 2009
Posts: 2,933
Canada
My Echo trimmers are set to run around 2500 rpm low speed and 7500ish at high speed with fresh strings. As mentioned above, speed will increase as the strings get shorter.


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