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Zoom › microheli blue speed up gear
04-01-2005 10:49 PM  13 years agoPost 1
leslie

rrKey Veteran

Hollis, NH - USA

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Hi Gang,

I did a search on this and found little. Microheli says ten tooth max on the pinion. When it come to gear ratios I get a little confused. I'm running a himax 2035-4200 with an 8 tooth pinion. Will the speed up gears overstress my input gear?

Anyone tried these?

Cheers,
Leslie

Protecting those who protect us

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04-04-2005 10:44 PM  13 years agoPost 2
leslie

rrKey Veteran

Hollis, NH - USA

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Hi Philpop,

The microheli web site says:

Notice: Motor pinion is allowed to have maximum 10T only (same as stock pinion)!


While I understand that an 8 tooth pinion is less that the 10 tooth max. But with gear ratios I get confused to what is less and what is more.

I suspect the 8 T is fine, when I finally strip my tail gears, I'll give it a try and see.

Thanks,
Leslie

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04-05-2005 04:59 AM  13 years agoPost 3
Heli PIC

rrApprentice

Petaluma, CA USA

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I am using an 8 tooth pinion on my Himax and have had over 100 flights with the hi speed tail gears from micro heli. I have not experienced any problem what so ever. The only thing that I noticed from this mod is that the tail control is more crisp when performing stall turns. I have my main rotor set at 2200 RPM.

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04-05-2005 05:29 AM  13 years agoPost 4
Jose Baquero

rrNovice

4717NW 7ST building 10 apt 808 Miami Fl, 33126

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ZOOM
IN MY SHOGUM USED 4200 MOTOR+2025 SC AND 10T AND FLY VERY COOL AND EASY... VERY HI RPM

HELICOPTER RULES

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04-08-2005 01:11 PM  13 years agoPost 5
Mattiward

rrApprentice

160ft off the deck 10ft from 400,000 volts - U.K.

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MicroHeli tail gears
i've got the blue input gear and am about to upgrade my bevel tail to the blue speed up items.

im running a CSM 200 gyro Hitec HS 55 tail servo (might be the HS50)

anyway i'm struggling to keep the tail held - will the speed up gears sort this out??

Matt

Regards Matti
~ Self confessed Chopperholic! ~

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04-10-2005 10:58 PM  13 years agoPost 6
Heli PIC

rrApprentice

Petaluma, CA USA

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No, With the stock gear ratio, you should be able to adjust your gain on your gyro so that your tail holds in position. If you are not able to achieve that with gain adjustment, then you need to check your rotor RPM. Your tail rotor RPM is proportional to the head speed. If your head speed is too slow, your tail rotor will not be turning fast enough; thus loosing tail authority. Try at least 2300 head speed; with proper gain adjustment, your tail should lock in. You will only appreciate the higher gear ratio if you try to pull manuvers such as 540 degree stall turn.

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04-10-2005 11:38 PM  13 years agoPost 7
leslie

rrKey Veteran

Hollis, NH - USA

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Hi,

Thanks heli-pic and others. I'm running the 'standard' white bevel gears and I'm having no troubles. I know I will eventually strip them, I have the blue speed up gears in my kit. It's good to know I will not destroy anything when I do switch. Thank you all!!

Cheers,
Leslie

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