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Old 02-04-2012, 02:54 PM   #1
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Default using tapered shaft motor??

I have a vanguard with the tapered generator shaft. thinking about taking it to a machine shop to get an estimate on turning it to 1 inch straight. I am planning on using my original club car clutch with the cpp adapter. I have read that you end up cutting off some of the straight shaft . Does anyone remember roughly how much they cut off, I am trying to determine if I have enough shaft to do this because I won't have as much shaft to start with after I have my tapered shaft cut down. I hope this makes sense to all. thanx wnk.
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Old 02-04-2012, 06:15 PM   #2
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Default Re: using tapered shaft motor??

Dusted, there's not a good definitive answer to your question.... it's like How long should a man's leg's be? Long enough to touch the ground..You need enough shaft to mount the clutch and tighten it down. With a straight shaft most can shim the engine side for alignment, you may need to plan for moving the engine side to side with a short shaft in order to align the clutch.

J.D. Salinger, by the way....
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Old 02-04-2012, 06:25 PM   #3
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Default Re: using tapered shaft motor??

im not worried about aligning the clutches, im concerned about not having enough shaft length to mount the clutch properly on the engine. I guess I could have made it easier by asking what is the minimum shaft length that I will need?
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Old 02-10-2012, 07:00 AM   #4
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Default Re: using tapered shaft motor??

Minimum shaft length is when your clutch taper is seated and you still have enough clearence between the engine block and clutch back shieve. You then set you engine mount to align the pulleys. On these custom builds there is no exact science, the only ones that are exact bolt on now are the Big Block kits from Carts Parts Plus.
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Old 02-17-2012, 05:38 PM   #5
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Default Re: using tapered shaft motor??

If you are going to use a straight shaft clutch, you probably want to actually have it in your hand, so you can see how it goes.

You will also have to pull the crank to get it turned, it costs me 70 to get my turned, or at least that is what he told me he would have charged.. I didn't get charged because we trade out things...long story.


YOUR crankshaft will have to have enough length so that when you take it down to an inch, it is still long enough.. Mine had a big fat long taper on it, and plenty to turn off, I am doing a Robin V twin the same way soon.



The stock clutch needs about an inch and a half, if you're going to use the stock clutch with the CPP adapter, I would get the adapter and take it to the machinist also with your stock clutch..
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Old 02-18-2012, 11:51 AM   #6
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Default Re: using tapered shaft motor??

The stock crank on a G9 with the 30mm taper (stock) is very short. The taper part is only about 1" and very close to the block. Hardly any non-taper sticks out of the bearing seal just a little. They run the clutch close as they can because it is easier on the bearings, and takes up less room too. I thought I read about someone turning a gen taper down to a 30mm taper and using a stock taper cart clutch but I am not 100% sure. The small part of a 30mm taper is just larger than 1" according to the taper adapter I put on.
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Old 02-18-2012, 01:32 PM   #7
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Default Re: using tapered shaft motor??

went ahead and removed the crank from the motor and took it to a local machine shop. Had it turned down to one inch. Length came out to approx 2 5/8 inches which should be plenty for any of the clutches. thanx for all that replied. wnk.
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Old 02-18-2012, 03:37 PM   #8
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Default Re: using tapered shaft motor??

that was me, and the taper is about 1'' by 1'' sort of.. it is very short, and very close to the housing.

The length you have should be fine, I hope you got him to tap the end with a nice sae fine thread..and cut a 1/4'' keyway. very important.


Quote:
Originally Posted by sho305 View Post
The stock crank on a G9 with the 30mm taper (stock) is very short. The taper part is only about 1" and very close to the block. Hardly any non-taper sticks out of the bearing seal just a little. They run the clutch close as they can because it is easier on the bearings, and takes up less room too. I thought I read about someone turning a gen taper down to a 30mm taper and using a stock taper cart clutch but I am not 100% sure. The small part of a 30mm taper is just larger than 1" according to the taper adapter I put on.
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Old 03-05-2012, 10:24 AM   #9
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Default Re: using tapered shaft motor??

my motor was like this to begin with as well. The machine shop turned the shaft down to 1 inch and it was a perfect length for the cpp adapter
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Old 03-05-2012, 03:12 PM   #10
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Default Re: using tapered shaft motor??

Quote:
Originally Posted by csason View Post
that was me, and the taper is about 1'' by 1'' sort of.. it is very short, and very close to the housing.

The length you have should be fine, I hope you got him to tap the end with a nice sae fine thread..and cut a 1/4'' keyway. very important.
There you are lol! Well it saves buying the adapter if you are going to use the stock clutch anyway.

You don't need a key way with the CPP adapter it clamps the shaft with the pressure of the taper....but if you wanted to use a 1" clutch you would need the key way for sure. The G9 was 3/8 fine thread, I was surprised. Used the same bolt in the clone. But I cut off a lot of crank I only left 1 1/8 of crank off that shoulder, slid the adapter right up to the shoulder which is around 1/2" from the block. That was close as I could get it, I had to have clearance on other side of engine.
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