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DLE 120 4T 4 Cylinder

Old 03-04-2021, 12:49 AM
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Default DLE 120 4T 4 Cylinder

Why no thread on here about the new DLE 120 4T / 4 Cylinder? Looks like a great war bird motor coming down the pipe, its available at Valley View RC so far.

Thinking this would be cool in a Ziroli Corsair.
Old 03-04-2021, 01:59 AM
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P


pictures
Old 03-04-2021, 02:35 PM
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That looks like a nice unit. It makes no sense though why they didn't do a 140cc. Their 35cc engine is a much better unit IMHO.

David
Old 03-21-2021, 02:26 AM
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The 35ra is a rear exhaust. You wouldn’t fit the manifold in the gap, and if you could the cooling fins would be the wrong way.
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Old 08-11-2021, 03:38 AM
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Any update on any one running this motor?
Old 03-27-2022, 02:18 AM
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Originally Posted by mikes68charger
Any update on any one running this motor?
I have one. The most PITA motor I've ever had. After 10 hrs of flipping and adjusting, I still haven't found a standard start-up procedure. I have broken it in as per instructions ok. But getting the carbs adjusted to achieve a steady idle is so far not possible. Cylinder temperatures are perfect all the way from 1200 to top rpm. But here the trouble arises. Finding the sweet spot below 1200 is not possible. Manual says that 1200 is the idle rpm, but this is of course not right, as 1200 pulls too hard to be called idle. As soon as it drops below 1200, it stops. I've gone through the system numerous times, ensuring that fuel delivery is perfect, but no luck. There are two videos by Charles Knight on YouTube. His motor sounds great, and has a steady idle.
Old 03-27-2022, 04:51 AM
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Originally Posted by Mavpro
I have one. The most PITA motor I've ever had. After 10 hrs of flipping and adjusting, I still haven't found a standard start-up procedure. I have broken it in as per instructions ok. But getting the carbs adjusted to achieve a steady idle is so far not possible. Cylinder temperatures are perfect all the way from 1200 to top rpm. But here the trouble arises. Finding the sweet spot below 1200 is not possible. Manual says that 1200 is the idle rpm, but this is of course not right, as 1200 pulls too hard to be called idle. As soon as it drops below 1200, it stops. I've gone through the system numerous times, ensuring that fuel delivery is perfect, but no luck. There are two videos by Charles Knight on YouTube. His motor sounds great, and has a steady idle.

There is a more active thread on Flying Giants on this motor.

I currently have 3 of them, and was also frustrated with them not getting the top rpm I expect after the factory breaks in. 6200 with 26x12 and 5600 with 28x10 ww2 round tip. The recommended prop is a 27x10.

I sent all 3 back to VallayView RC, it looked them over and found, 1 motor the timing was 7 degrees off and he adjusted (not end of world but helped idle) and 1 other of the motors the main butterflys where not perfectly matched with one being opened more than othere at idle. I was also idle around 1200, while this was OK for me and not my concern.

He ended up putting Bowman rings in all 3 motors and tells me they are idleing better and im getting 6800rpm on a 26x12. Per our conversation it would not be advisable to run over 7k on ground as most quads run at lower rpm than there single cc counterparts. You also lose power due to more internal drag/rotation weight, but gain a very smooth and nice sounding motor and for me narrow motor to fit nicely in side my 2 projects (Ziroli Corsair and 135in F7F Tigercat) fits 100% inside vs DLE85.

I think it all comes down to compression and needing a much longer brake in. I would put rings in it.

I just got back from Disney last night but work has me gone for another week before I can test run these motors my self.

Old 03-18-2024, 04:56 AM
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Getting ready now
Old 03-18-2024, 05:10 AM
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Flying or just running?

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