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Old 07-21-2005, 01:09 PM   #121
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I looked into the clutch and the front bearing was almost jamming on the motoraxle but turning
alu shoes were badly worn
could be this that's bothering the motor...
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Old 07-21-2005, 01:14 PM   #122
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The clutch should be able to spin freely (flick it and it should spin for awhile). This is ofcourse when its not meshed with the spur gear lol..
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Old 07-22-2005, 02:04 AM   #123
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has anyone had issues with dirt entering between the crank/sleeve and button head....

there seems to be a bit of a gap between that area. the outer edge of the piston sleeve seems exposed, i am worried dirt may get between the top of the sleeve and crankcase

also why is there 5 carb restrictors when they are all the same size?
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Old 07-22-2005, 09:16 AM   #124
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Quote:
Originally Posted by BigBadJabba
has anyone had issues with dirt entering between the crank/sleeve and button head....

there seems to be a bit of a gap between that area. the outer edge of the piston sleeve seems exposed, i am worried dirt may get between the top of the sleeve and crankcase

also why is there 5 carb restrictors when they are all the same size?
No worry about that gap,if it leaks you can't start the engine. Use clay to clean it when you remove the cooling head. Don't let the dirt fall into the sleeve.

Oops...you got too much venturis. You need to return them to me. There are two different size venturis;one is 7mm another is 8mm.
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Old 07-23-2005, 06:25 AM   #125
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Here is my initial review of this engine.

I have ran a few engines in my time. Jp's, RB's and Piccos. And i am trying to cut back on my RC spending and save a bit on engines. So i decided to give the STS a go.

Firstly I opened up the engine. The backplate makes an excellent seal. When i open it up i found a few brown marks on the inside of the crankcase. No problems I decrese it and put after run oil to prep it for run in.

The engine has a very large cooling head. Similar size to a WS7II head. p.s a nova and rb 4 bolt head fits

One thing I dont like is the HEX screws on the engine. I don't like it coz dirt gets traped easy, causing stripped screws, I like the rb and novarossi flat head screws.

Also the carb doesnt have a o-ring on the top of the carb throat. it has one in the crank though.

Anyway, the engine starts without fuss and idles great. I have only done 1/2 a litre run in so far

As for the power, it has pretty impressive bottom end. I would rate it above that of a S7 though not as good as a P5.

It has decent top end. A bit less than a S7.

This may change as I run in the engine more as this engine is still very tight.

So far, so happy which this engine.

More to come as i start racing with this engine.


Also when is the D21T going to be available? and is there major difference other than the turbo button head?
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Old 08-03-2005, 02:32 AM   #126
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I notice my motor gets dirty of fuel on the front part
but I can't find a reason....
could it be the front bearing is letting fuel escape through there, making an airgap???
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Old 08-19-2005, 09:39 AM   #127
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Hey everyone,

I've really been considering getting this engine lately, but after reading through all 5 pages I can't seem to get definitive answers about how good/bad this engine is. 190$ is a bargain..... if the engine performs and is reliable.

So far, I see reports from folks that have just broken in the engine, or are in the process of breaking in their engine. That unfortunately doesn't help too much. To those people that have bought it, broken it in, and raced it, how about a new report? Here are some main points to consider:

Reliability. Is this engine finicky with settings? Does it die constantly if not set exactly to the correct settings?

longetivity. How many gallons are you getting through this engine before the p/s, conrod, crankshaft, or bearings are blowing out?

performance. Is this engine running alongside 300$+ engines? How is the torque? Does it get passed on straightaways that are 150+ feet?

Any answers would be helpful with my decision. Right now I'm kinda down on the 300$+ engines and wouldn't mind trying out a 200$ or less engine. I'm trying to decide between this engine, 3-port Collari, or maybe the Fantom '05 version.
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Old 08-22-2005, 06:23 AM   #128
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Anyone? Dino.tw? How is this engine in stock form? How long is it lasting?
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Old 08-22-2005, 11:51 PM   #129
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Hi Laterilus,just try one. You will love it.
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Old 08-23-2005, 02:24 AM   #130
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yes just try one
you won't be disappointed

it's as good as the 300-400.00 motors
in the straight I win from a RB WS7 with a commun 053 pipe
no real sign of wear after 4 liters
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Old 08-23-2005, 04:17 AM   #131
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Default D21B

yep get yourself a piece and you know the real meaning of value for money.Out of stock in my local scene.Tell us more about it after you run it
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Old 08-23-2005, 01:23 PM   #132
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lol. Almost the answers I was looking for. You guys sound like a bunch of politicians. I guess I could look at it as, "what do I have to lose?" Well.... only about 190$... When I feel like getting my 1/8 back up and running, I'll give one of these engines a shot.
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Old 08-23-2005, 02:02 PM   #133
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But the difference is the STS does deliver

I don't know about the D21B engine as the offroad track that we where getting almost a year ago never came but I can tell you back in Jan 2004 I purchased a STS D5 .12 (early version). It's been raced at two clubs since and besides the crank problem with the early early versions (thanks dino for unbelievable support on that one) I am very happy with it. I am still using it now and despite a damaged sleeve from when I tried dropping the head that .1mm too far (compression now excapes at TDC when turned over by hand) It is still going well

And what engine do I have waiting to go in when the D5 dies? A D5R ofcourse BWahahaha
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Old 08-24-2005, 03:14 AM   #134
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dino

I want to buy D.21B 's
but I can't find any ??
used to buy at the Border holland

Last edited by speedy2; 08-25-2005 at 09:59 AM.
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Old 09-10-2005, 07:19 AM   #135
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http://shop.the-border.nl/home.php?cat=224
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