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 Author | Topic: sirio 100cc (Read 579 times) |
thomas
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|  | sirio 100cc
« Thread Started on Jun 11, 2005, 2:47pm » | ![[Quote]](http://s4.images.proboards.com/buttons/quote.gif) |
hallo from greece
U have just bought a kart with sirio engine two stroke and 100 cc with 28hp i havnt got any electrical start and i want to find out if there is any for this motor and find out the full technical specifications for it.....Please help me with this and i will be greatifull..........
thank you already
thomas turbotom
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Jamie
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|  | Re: sirio 100cc
« Reply #1 on Jun 12, 2005, 6:53am » | |
I think you'll find that the engine is more likely to be a bump start in which case no electric start can be used, it is easy enough to tell; do the rear wheels turn easily or is there some stiff compression from the engine?
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turbotom
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| | Re: sirio 100cc
« Reply #2 on Jun 12, 2005, 1:15pm » | |
yes there is a stifness on the weels did you hear any kit for starter for this kart.....
thanks a lot
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Jamie
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| | Re: sirio 100cc
« Reply #3 on Jun 12, 2005, 1:52pm » | |
I don't think you can run any electric start system on a direct drive 100cc, you can on some but I've never heard of sirio doing one. Bump-starting isn't all that difficult and so long as you're allowed it only takes one other person to get it going easily.
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The Canadian
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| | Re: sirio 100cc
« Reply #4 on Jun 12, 2005, 4:41pm » | |
100cc direct drive is too powerful to be electric started from any standard starter - i do not know of one that can
i race 85cc direct drive and i can start that with an electric start but i had to make it more powerful
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Jamie
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turbotom
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| | Re: sirio 100cc
« Reply #6 on Jun 13, 2005, 6:40am » | |
i keep looking over the internet and i cant find anything even the motor that i have ...i agree it is too powrful to run with a starter its to much compresion in it
thank you very much for the respond keep in tuch....
thnks a lot
thomas turbotom
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| | Re: sirio 100cc
« Reply #7 on Jun 13, 2005, 10:20am » | |
yea Dom - graemes starter got the school sirio going on a stand
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| | Re: sirio 100cc
« Reply #9 on Jun 13, 2005, 11:08am » | |
Dom I cant see why you would have to make a starter more powerful for a raket, they dont exactly have much compression
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The Canadian
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| | Re: sirio 100cc
« Reply #10 on Jun 13, 2005, 2:41pm » | |
probably just mine - either that or it was the starter - it was playing up a bit recently - could have been a longer term problem - we sorted it out anyway
i reckon that it was starter, not kart thinking about it now - also the fact it is a lightweight one means it is a bit less powerful than those like graeme's
yeah - good point bout the tkms jamie
i'll probably just shut up now! 
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WKCGeezer
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| | Re: sirio 100cc
« Reply #11 on Dec 5, 2007, 9:13pm » | |
Thomas -
Does the carburetor stick out the side, or does it face front?
If it sticks out the side, that's a rotary valve motor, probably an ST-50 (circa 1974.) I have one, and have some information on it.
If it sticks out the side, that's a newer, reed valve motor.
Either way, if you don't want to use direct drive, you can run a clutch off the left (mag) side with a crank extension, but only if the frame has room at the axle for the large sprocket on that side of the motor. Some sprint frames have a diagonal cross tube near the axle that wouldn't allow space for a sprocket. If you have a reed motor you could also run the clutch on the right side, eliminating that issue.
If you use a clutch, you can start the motor with a separate kart starter that's inserted into (or sometimes over) a special nut you put on the opposite end of the crank. You obviously need someone to hold and operate that starter while you sit in the seat. It's a lot easier to insert the starter if you drive from the mag side however.
This is the way they're used on an enduro (laydown) kart, usually with a belt drive and axle clutch. For sprint, you could use an oil-filled DXL clutch (4-spring,) on the crank extension, and a chain. You would still need that extension shaft. They're available from LAD, or from some online kart shops (like Cometkartsales.com).
You would also need a separate battery kart starter, and a starter nut for your motor.
If you have a rotary, otr other questions, email me at RodneyHytonen@verizon.com
HTH,
Rod
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