 TDC mark on Raby motor..., hoping for a verification... Jake's on vacation |
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| stepuptotheMike |
 Jun 28 2009, 04:55 PM
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#1
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medium pimpin  Group: Members Posts: 565 Joined: 4-September 06 From: Charlotte, NC Member No.: 6,769 Region Association: South East States  |
I'm trying to put a Mallory dizzy in my Raby motor. Trying to make sure that I have TDC on #1 without having to resort to a chopstick (IMG:style_emoticons/default/chairfall.gif)
On my impeller there is a nice paint mark on one of the fins which I"m assuming is the timing mark. It lines up perfectly with the rotor when pointing to the #1 wire terminal. Spun a little ways past that, I have what look like 2 dots side by side (..) You fellow Raby owners, is that the TDC #1 mark? Thanks much!! Mike |
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| VaccaRabite |
Jun 28 2009, 06:18 PM
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#2
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En Garde! Group: Admin Posts: 13,443 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
You are at TDC when the piston is at the top of the cylinder and the valves are both closed.
The mark on the flywheel and fan will appear twice per cycle. If the vlaves are not bothe closed, though, you will be 180 off and blow some bitch'n fireballs out your carbs. Zach |
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| jsayre914 |
Jun 28 2009, 06:41 PM
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#3
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Speed Up !!! Group: Members Posts: 3,188 Joined: 10-February 08 From: Timonium MD 21093 Member No.: 8,696 Region Association: MidAtlantic Region |
QUOTE(Vacca Rabite @ Jun 28 2009, 08:18 PM)  , you will be 180 off and blow some bitch'n fireballs out your carbs. Zach (IMG:style_emoticons/default/happy11.gif) I would pay to see that. (not on your motor of course) |
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| VaccaRabite |
Jun 28 2009, 07:18 PM
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#4
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En Garde! Group: Admin Posts: 13,443 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
My point was more: Don't assume. (though I *HAVE* blown fireballs out of my carbs from being 180 out.)
At least the first time, use a straw (not chopsticks!) to locate TDC and make sure the valves are closed. Then look to see if the mark you think is TDC on the fan really is. Zach |
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| 904svo |
Jun 28 2009, 07:19 PM
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#5
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904SVO Group: Members Posts: 1,118 Joined: 17-November 05 From: Woodstock,Georgia Member No.: 5,146 |
QUOTE(stepuptotheMike @ Jun 28 2009, 02:55 PM) I'm trying to put a Mallory dizzy in my Raby motor. Trying to make sure that I have TDC on #1 without having to resort to a chopstick (IMG:style_emoticons/default/chairfall.gif) On my impeller there is a nice paint mark on one of the fins which I"m assuming is the timing mark. It lines up perfectly with the rotor when pointing to the #1 wire terminal. Spun a little ways past that, I have what look like 2 dots side by side (..) You fellow Raby owners, is that the TDC #1 mark? Thanks much!! Mike PM bam914 he will give you your answer. |
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| stepuptotheMike |
Jun 28 2009, 09:02 PM
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#6
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medium pimpin Group: Members Posts: 565 Joined: 4-September 06 From: Charlotte, NC Member No.: 6,769 Region Association: South East States |
I was finally able to locate it. What I had initially been looking at are balancing drill outs (assuming on that).
Got out the white paint and freshened up the mark. Now just a little wiring work to get buttoned up and I'll fire this thing up. But that will have to wait for another day. Mike |
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