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jfwh · 10-11-2010, 08:21 PM

does anyone know what the timing should be for a 76 cc twin chapman

jfwh · 10-13-2010, 07:34 PM

thanks guys i figured it out the previous owner had it so retarded it was firing at the bottom. had to move the throttle linkage 1 1/4 inchs lower the hall sencer ring in order to get 28 degrees advance now i have power starts on first turn

**scaleguy** · 10-13-2010, 09:31 PM

jfwh,

Glad you got it solved.

So what airplane is this mounted in?

vinver · 10-13-2010, 11:49 PM

Reminds me of the time I was discussing a neighbour's old Ariel Twin motorcycle, he said he couldn't get it running because nobody could tell him the firing order. "Wouldn't it be 1-2 " I said, he thought long and hard and said, "I guess it's the timing I need to know then..."
Vince

10-11-2010, 08:21 PM	#1
jfwh RCC Noob I am: floyd h Join Date: Jul 2010 Location: cobourg Radio of choice: jr9303 # of RCs: 7 Feedback: 0 / 0% Posts: 22 Total Props: -1	chapman twin Remove this ad - become a site supporter! does anyone know what the timing should be for a 76 cc twin chapman
	.

10-13-2010, 07:34 PM	#2
jfwh RCC Noob I am: floyd h Join Date: Jul 2010 Location: cobourg Radio of choice: jr9303 # of RCs: 7 Feedback: 0 / 0% Posts: 22 Total Props: -1	Re: chapman twin thanks guys i figured it out the previous owner had it so retarded it was firing at the bottom. had to move the throttle linkage 1 1/4 inchs lower the hall sencer ring in order to get 28 degrees advance now i have power starts on first turn
	.

10-13-2010, 09:31 PM	#3
scaleguy IMAC/SA or NOTHING! ★ Site Supporter ★ I am: JimmyD Join Date: Nov 2002 Location: Mississauga On, SE Zone Radio of choice: JETI Duplex DS-24 # of RCs: ? Feedback: 75 / 100% Posts: 16,820 Total Props: 59	Re: chapman twin jfwh, Glad you got it solved. So what airplane is this mounted in? __________________ Jim Daly #IAmIMAC IMAC Sequence Committee Member MAAC #14323L IMAC #3678 *Windy you ask? I have Whitecaps on my Coffee, YOU be the Judge!*
	.

10-13-2010, 11:49 PM	#4
vinver RCC Senior Contributor I am: Vincent V. Join Date: Jun 2007 Location: Enfield, Nova Scotia Radio of choice: JR # of RCs: 10+ Feedback: 8 / 100% Posts: 721 Total Props: 1	Re: chapman twin Reminds me of the time I was discussing a neighbour's old Ariel Twin motorcycle, he said he couldn't get it running because nobody could tell him the firing order. "Wouldn't it be 1-2 " I said, he thought long and hard and said, "I guess it's the timing I need to know then..." Vince
	.

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