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Old 06-25-2017, 02:37 PM
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Quote:
Originally Posted by denney47 View Post
The AJ Slick was an 89", sorry.
The VVRC/RCGF 70 twin will turn a Xoar CF 24 X 9 6400 RPM's Static on ground.
Tom
i never owned a 70cc twin, only used single cylinders, my dle 61 spins the falcon cf 24x9 with 6700 rpm static, are the 6400 of the twin good or bad?
looking just at the rpmīs the dle seems to be more more powerful (???)
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Old 06-26-2017, 10:47 PM
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Quote:
Originally Posted by 3D Peter View Post
i never owned a 70cc twin, only used single cylinders, my dle 61 spins the falcon cf 24x9 with 6700 rpm static, are the 6400 of the twin good or bad?
looking just at the rpmīs the dle seems to be more more powerful (???)
Twins have more internal drag because of the extra cylinder and piston so the power should be close to the same as the equivalent slightly smaller single cylinder engine in some cases.
However, rpm means very little also. Torque curve is a factor as well.
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Old 06-27-2017, 06:48 AM
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Quote:
Originally Posted by 3D Peter View Post
i never owned a 70cc twin, only used single cylinders, my dle 61 spins the falcon cf 24x9 with 6700 rpm static, are the 6400 of the twin good or bad?
looking just at the rpmīs the dle seems to be more more powerful (???)
Also in this case, the FAlcon 24x9 uses a very thin blade profile and is considered light load. The Xoar that's being used is thick and higher load than the Falcon.

6400 Static on Xoar, add another 500 ish RPM if you use the falcon on the same engine.

Comparisons should be done, with the same prop at the very least. Load up your DLE61 with a Fiala 24x9 and see what you get.. LOL

Evidence of different loads for different props can be seen here: https://www.flyinggiants.com/forums/...postcount=1099
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Old 06-27-2017, 08:56 AM
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thanks for the info guys

I know there is some difference between props but never expected it to be that big

JoeT, if your forecast is correct the falcon 24x9 would be not enough prop for the rcgf 70, at least according to denney47 we should keep the top end RPM's in the mid 6000 static

weīll see
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Old 06-27-2017, 09:12 AM
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Quote:
Originally Posted by 3D Peter View Post
thanks for the info guys

I know there is some difference between props but never expected it to be that big

JoeT, if your forecast is correct the falcon 24x9 would be not enough prop for the rcgf 70, at least according to denney47 we should keep the top end RPM's in the mid 6000 static

weīll see
Honestly, I was extrapolating anecdotal data based on factual data supplied by Closetguy. But yes, I agree, IMHO on my PTE-72, I'm personally using 24x10 Xoar and I'm getting 6200 - 6300 on the ground on a new engine. Anecdotally if I switched from a Xoar 24X10 to a Falcon 24X9, it would spin another 600 - 700 RPM ish.

I've ordered myself a 24x10 Mejlick Thin Blade and will post details on the Real RPM Thread. All I'm hoping for is to get around 6500 - 6700 RPM with the thinner blades. I rarely fly full throttle.
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Old 07-03-2017, 10:36 AM
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Hi Tom,
What's the ETA on the second batch? I need one for a 91" Extreme Flight Extra.
Thanks,
Brian

Quote:
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We released this engine early May so not many customers have it in the air as yet. Our test pilots have flown this engine. One is in a AJ Slick 92" and says it is a rocket.
We have sold out of the first order and are pre selling the second order.
https://www.valleyviewrc.com/new-rcg...win-gas-engine
Thank you
Tom
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Old 07-04-2017, 01:44 PM
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Hi Tom,
What's the ETA on the second batch? I need one for a 91" Extreme Flight Extra.
Thanks,
Brian
Brian,
The shipment of engines are now in China customs. As soon as they are released we should have them in 5 or 6 days.
Thank you
Tom
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Old 07-19-2017, 06:49 PM
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70cc Engines are now in stock, just received two shipments so should have enough for all pre orders and others. $499 intro price.
https://www.valleyviewrc.com/new-rcg...win-gas-engine

Thanks
Tom
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Old 07-19-2017, 07:37 PM
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Received and mounted mine yesterday on my EF 91" trying to get it done for this weekend. VVRC 40 in the background as well.


Quote:
Originally Posted by denney47 View Post
70cc Engines are now in stock, just received two shipments so should have enough for all pre orders and others. $499 intro price.
https://www.valleyviewrc.com/new-rcg...win-gas-engine

Thanks
Tom
Valley View RC
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Old 07-20-2017, 05:55 AM
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Quote:
Originally Posted by Hollywood_007 View Post
Received and mounted mine yesterday on my EF 91" trying to get it done for this weekend. VVRC 40 in the background as well.
The RCGF engines are looking pretty good. My 26CC has been running top notch and I now have about 25-30 flights on it. The engine is machined nicely too. So far I am very impressed with it - quite the bang for the buck if you ask me compared to a DLE in the same area.

Last weekend it started missing and popping so I have to look into that and see what is going on. I have not had time to check it out yet. Hopefully not a big deal, but the cool thing is we have dealers that will support it. I bet that twin will be nice performer for you.
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Old 07-23-2017, 10:25 AM
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Got her running! Night day over the DA 85 that was in it! So smooth! Had a little trouble starting first time and cylinders felt really dry. It would pop but not start. Took the spark plugs out and shot gas in there and then she started up. Maybe that's something you guys usually do anyway.
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Old 07-23-2017, 10:38 AM
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Got her running! Night day over the DA 85 that was in it! So smooth! Had a little trouble starting first time and cylinders felt really dry. It would pop but not start. Took the spark plugs out and shot gas in there and then she started up. Maybe that's something you guys usually do anyway.
Few drops of redline in each jug and turn it without the plugs in a couple dozen times before mounting. Makes any new china engine start just a little better for the first time.
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Old 07-24-2017, 12:37 AM
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I just run The throttle wide open, ignition off, and choke on. Flip the prop until I see fuel passing in the line to the carb.
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Old 07-24-2017, 03:26 AM
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Originally Posted by Hollywood_007 View Post
Got her running! Night day over the DA 85 that was in it! So smooth! Had a little trouble starting first time and cylinders felt really dry. It would pop but not start. Took the spark plugs out and shot gas in there and then she started up. Maybe that's something you guys usually do anyway.
Quote:
Originally Posted by Hollywood_007 View Post
Received and mounted mine yesterday on my EF 91" trying to get it done for this weekend. VVRC 40 in the background as well.


hows the power and RPM like ?
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Old 07-24-2017, 06:03 AM
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Good idea!


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Originally Posted by terryscustom View Post
Few drops of redline in each jug and turn it without the plugs in a couple dozen times before mounting. Makes any new china engine start just a little better for the first time.
Yep that's what I did. It popped with choke on but would just pop and shut off with choke off. Even tried gas injected in carb. Too much resistance in cylinders to keep going so once they got some lubrication it ran fine.

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I just run The throttle wide open, ignition off, and choke on. Flip the prop until I see fuel passing in the line to the carb.
RPMs were 6200 out of the box with only adjustment being 1/8 out on low end. Manual I got was for the 40 and said recommended range was 6500-6800 so I am leaving it as is for now

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hows the power and RPM like ?
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