RCU Forums - View Single Post - DL-50 engine
Thread: DL-50 engine
View Single Post
Old 07-25-2008 | 11:44 AM
  #2248  
rctom's Avatar
rctom
Senior Member
 
Joined: May 2002
Posts: 6,189
Likes: 0
Received 2 Likes on 2 Posts
From: Flower Mound (near Dallas), TX
Default RE: DL-50 engine


ORIGINAL: BOUND_4_HELL

Hi Tom,

Here is how I tested the DL50.

The RPM'S are fairly accurate, my meter may bounce around by 20 RPM. With the Xoar 22x8 the meter was reading 7200 to 7220 RPM. With the Xoar 23x8 it was reading 6690 to 6700 RPM

The thrust readings may or may not be accurate, as I'm using a 50 lbs digital fish scale and did not verify its accuracy with dead weights. Also the digital fish scale bounces around within a ¾ lbs range ( it's not a steady number) I post the reading in the middle of the range.

The two readings can be compared to each other, as I measured both props the same way.

Geppino
Thanks. I'm not really interested in thrust, it is whatever it is and is directly dependent on the prop type and RPM. RPM is much easier to measure accurately.

If this is accurate then the 3MM TOC-53 is right in there with the DL-50, it might even have a bit more zing. With the hop-up kit installed I'm getting 7350 on a Bunny 22-8 which is the same as a Xoar, and 6800+ on a Vess 23-a.

But some people quote much higher numbers for the DL and I'm trying to get rational readings. I own a couple DL-50s but have not had time to mess around with them, maybe I should have a runoff with TOC-53, DL-50 and MT-57. I own all of them, maybe a side by side comparison would be worth a couple days of my time.

TF