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Old 10-02-2004, 07:08 PM   #31
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Has anyone ran this engine , how does the bottom end power compare to a P5 or OS .21 ? ALso what pipe combo and glow plug seems to work , if it performs as well as it looks it would be a great alternative to the normal .
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Old 10-03-2004, 10:55 AM   #32
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Quote:
Originally posted by au_Nightmare



woohooo
Thanks for your support! Stephen<kiss>
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Old 10-03-2004, 11:06 AM   #33
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Quote:
Originally posted by Eddie
Has anyone ran this engine , how does the bottom end power compare to a P5 or OS .21 ? ALso what pipe combo and glow plug seems to work , if it performs as well as it looks it would be a great alternative to the normal .
This engine has smooth powerband. A little less bottom end compare to P5,but it has very good top end. Also it is very affordable http://www.projectzen.net/page5.html
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Old 10-11-2004, 01:05 AM   #34
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Can anyone suggest a pipe that works well with this engine. From what I see the STS pipe don`t have a efra, imfar mark, so I can`t use it in a race.
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Old 10-11-2004, 01:10 AM   #35
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Dino,
I knew you would make a .21!
So you ran it in your 1/8th on-road, how did you like it? Are you planning for an on-road version? The price alone is worth it! How does the life of the rod compared to the Rossi engines. We can go a whole season on a rod and not be concerned, unless we have an over rev, but normal racing, never really look at it much, and haven't popped one yet.
I wish you could see my little Kelsey run her car, you would be most impressed, makes a few grown men very unhappy at times.
Her last race she put the boots to the boys and had her first ever win, very proud daddy!
Dino, you take care, and enjoy your new baby. They are truley a joy!
Smitty
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Old 10-11-2004, 09:46 PM   #36
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Quote:
Originally posted by smitty
Dino,
I knew you would make a .21!
So you ran it in your 1/8th on-road, how did you like it? Are you planning for an on-road version? The price alone is worth it! How does the life of the rod compared to the Rossi engines. We can go a whole season on a rod and not be concerned, unless we have an over rev, but normal racing, never really look at it much, and haven't popped one yet.
I wish you could see my little Kelsey run her car, you would be most impressed, .
Her last race she put the boots to the boys and had her first ever win, very proud daddy!
Dino, you take care, and enjoy your new baby. They are truley a joy!
Smitty
makes a few grown men very unhappy at times.... hahaha.....

My son will catch up with your little Kelsey soon. I found a good teacher for him already...
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Old 10-11-2004, 10:02 PM   #37
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I see,
Guess I need to call in the troops,
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Old 10-24-2004, 02:49 AM   #38
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Dino you have PM
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Old 11-19-2004, 04:13 PM   #39
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TWF8 have part of the review up of the D21B...
http://www.twf8.ws/new/tech/engine/s.../sts-d21b.html
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Old 11-21-2004, 12:26 PM   #40
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Default D21b needle settings

Anyone know the standard needle setting for the D21B? Also a link for parts in the USA.
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Old 11-25-2004, 01:57 AM   #41
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Many manufactures tend to post the BHP of each engine although many say it is not correct.
However they do know the RPM. How come STS does not mention the RPM"s on their engine spec sheet.
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Old 11-26-2004, 02:08 AM   #42
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Quote:
Originally posted by sts2000
Many manufactures tend to post the BHP of each engine although many say it is not correct.
However they do know the RPM. How come STS does not mention the RPM"s on their engine spec sheet.
Because we think there is no sense.
If we use 40% nitro even more nitro,no loading,test it under air conditioner....etc. And tell you the max.rpm is 50,000rpm.Is it make sense?
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Old 11-26-2004, 02:29 AM   #43
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Yes you gotta ask the question - how do they come up with these RPM values?

Unloaded engine? if loaded how much load? how much Nitro? Oil? How long can it sustain the rated RPM?

Best RPM/BHP measurement is on the track.
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Old 11-26-2004, 03:58 AM   #44
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Normally the factory suggests the nitro % for each engine and according to that the give the rpm value. For sure it cant be accurate and will differ according to climates.
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Old 11-27-2004, 02:31 AM   #45
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sts2000, Listen to dino - his the master

Example of why it it does not really matter.
Lets look at the specs of the OS .18 TZ engine -
SPECS: Displacement: 0.183 cu in (3.0cc)
Bore: 0.629" (16.0mm)
Stroke: 0.590" (15.0mm)
Practical RPM: 3,000-34,000
Output: 1.8ps @ 29,000 RPM

Now when RCZONE tested it -
2.28 horsepower at 30,500 rpm and "as high as 42,500 rpm under light loads"

The figures differ there somewhat...
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