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Old 02-11-2005, 07:49 AM   #1426
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what about the D.21 motor?
anyone got one ?
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Old 02-12-2005, 07:22 PM   #1427
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Default Re: Re: Re: D5R Variation

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Originally posted by dameetz
Sorry if I m confusing, let me explain again. Me and my friend have D5R, which is a 5 ports engine, which looks the exactly the same from the outside. However, upon inspecting the sleeves,they are both different. As I said earlier my sleeve looks like normal typical 5 port with both side 2 transfer port and 1 booster port, my friend's is like a Nova sleeve with both side 2 transfer ports (one vertical and one is normal horizontal) and the booster port has a divider or wall in the middle, which if you count will make 6 ports instead.
That is six ports .12 engine. Only produce a few for team racers. Due to the cost is higher and no one want to buy high price STS engine,so we didn't release it officially. The original we would like to upgrade the D5 to D6,after some market analysis we knew that people only want economical racing engine. So we just stop the plan and change direction to lower the prices.
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Old 02-13-2005, 07:34 AM   #1428
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Default Re: Re: Re: Re: D5R Variation

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Originally posted by dino.tw
That is six ports .12 engine. Only produce a few for team racers. Due to the cost is higher and no one want to buy high price STS engine,so we didn't release it officially. The original we would like to upgrade the D5 to D6,after some market analysis we knew that people only want economical racing engine. So we just stop the plan and change direction to lower the prices.
No wonder that my friend's D5R is a bit faster than mine. Anyhow, I m more than satisfied with my normal D5R. FYI my friend I m talking about is Hj Irman from Brunei, he got the motor during Femca Race last year in Thailand.
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Old 02-14-2005, 06:25 PM   #1429
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l have a sts have you peaple have any pics on mods done to a sts
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Old 02-17-2005, 03:14 PM   #1430
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Dino did the carb have a leak
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Old 02-17-2005, 03:43 PM   #1431
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I once had a leak on my D5 carb - caused by me moving the fuel inlet
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Old 02-18-2005, 01:19 AM   #1432
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Quote:
Originally posted by 20 SMOKE
Dino did the carb have a leak
No. But I still send a new carb to you.
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Old 02-18-2005, 05:36 AM   #1433
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hi dino! sent you a PM..
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Old 02-18-2005, 11:46 AM   #1434
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thanks
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Old 02-21-2005, 01:23 PM   #1435
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HI Dino
what is the size of STS D5R engine's bearing
thks
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Old 02-21-2005, 01:43 PM   #1436
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Quote:
Originally posted by A380
HI Dino
what is the size of STS D5R engine's bearing
thks
PN 202 Front bearing 7x19x6mm
PN 120201 Rear bearing 12x21x5mm

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Old 02-21-2005, 02:24 PM   #1437
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Thanks AFM
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Old 02-21-2005, 10:20 PM   #1438
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Can someone tell me what the optimum operating temp is for the D3? I am running one in my Vision Pro and racing this weekend.

Thanks,
Mark
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Old 02-22-2005, 12:42 AM   #1439
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Dino or AFM give the best answers but ill throw my 2c in.....

The correct temp is great performance tune with visible smoke from exhaust

IMO you should only check temp to ensure ur not over cooking it. Engine temp will depend on weather, track, fuel etc so you can not really tune to a magic temp value.

Just do not try over rev her - gear it up if required.
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Old 02-22-2005, 05:51 AM   #1440
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Quote:
Originally posted by Vegas Racer
Can someone tell me what the optimum operating temp is for the D3? I am running one in my Vision Pro and racing this weekend.

Thanks,
Mark
There are many variables that affect it; Ambient temp, fuel type and nitro content, altitude & barometric pressure, Pipe/manifold type and setting, clutch setting, glow-plug, gear ratio, available traction, How hard your driving, Etc. Etc.

All of the following conditions MUST be met before any temperature can be considered correct, assuming the engine is in good shape.
1.-There must be a visible trail of smoke when accelerating from EVERY corner.
2.-The idle is stable.
3.-The glow plug wire and surrounding bottom of plug dry, wire somewhat shiny, almost gray but the coil stays round (UN - DISTORTED) = Optimum power 100%
4.-The performance is good, and does not decrease along a tank of fuel.

Actually when a new plug wire just goes slightly gray after a 5 or 10 minute of hard run, it means you are very close to an optimal horsepower tune, but be careful the next step is TOO LEAN!

Note: You can only "Read" your plug in a nearly new state (Wire like new and shiny). A gray plug can still operate well. But after it has totally gone gray performance can start to fall off. To test just put in a new plug and if there is no difference in performance save the gray one or put it back in. If your engine does not feel or run right try a new plug before making major tune change's

If the optimum conditions are met according to above explanation, the Dragon D3R should read a Temp of around
100 - 120C, based on Air Temp of 25 - 28C at sea level.

AFM
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