How to guide: VS1400 drive on a VL800/C50 - Page 17 - Suzuki Volusia Forums : Intruder Volusia and Boulevard Forum
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post #161 of 165 (permalink) Old 11-09-2016, 04:19 PM
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The Rusk's tutorial appears to be offline, possibly due to hosting charges.

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post #162 of 165 (permalink) Old 01-15-2017, 02:08 PM
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As a journeyman Machinist....

My very first thought was the removal of that much of the splines on the end of the driveshaft. It is a rare thing that more than what is needed is used in a mechanical application, and it is always built to a strength factor x % over max stress ratio. Since you mention that some have done this without the shortening of the driveshaft, has anyone ever done an exact measurement from the 1400 rear end face to the max safe length into the U joint splines, and the face of the U Joint? That would seem like the first thing that you would do on a mod like this.

Am I correct in assuming that the shoulder MUST be machined back in order for the VL800/C50 shaft to fit between the 1400 unit and the U joint? Or is that not tampered with either when the mod is done without machining? (That wasn't real clear) I can see that there very well could be enough room into the U joint for the shaft to extend without binding on the rear portion of the joint. But I am guessing that from the mounted face of the 1400/1500 unit and the face of the U joint it must be shortened or it will bind ?

As I am also a lifetime certified all position welder in TIG, MIG, stick, gas, and sub-arc. Cutting and welding a spec tempered driveshaft would be my last choice, and definitely a jig welding application.

I am not trying to stir up anything here, but this seems to leave a lot of questions open as to if the basic measurements were even done.

Marty

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post #163 of 165 (permalink) Old 01-15-2017, 11:06 PM
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Yes, measurements were done. Yes, there was some that ran the splines deeper into the joint but decided that wasn't a good solution. I think I remember one person having some serious problems with the splines in too deep. My guess is the measurements were made from comparing existing parts in the shop. From what I have read, the first person, DJ, to make the mod had a good reputation for working on motorcycles. I don't know if DJ put the shafts into the joint to visually inspect the connection but it wouldn't surprise me if he did - I just don't remember reading about it. Someone else may be able to answer better.

For the most, 99.9% of the people doing this modification really like it. I know I like it. It was easy to do and made a big difference in high speed (for the c50) riding.


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post #164 of 165 (permalink) Old 01-16-2017, 02:03 PM
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Quote:
Originally Posted by guitarjim View Post
Yes, measurements were done. Yes, there was some that ran the splines deeper into the joint but decided that wasn't a good solution. I think I remember one person having some serious problems with the splines in too deep. My guess is the measurements were made from comparing existing parts in the shop. From what I have read, the first person, DJ, to make the mod had a good reputation for working on motorcycles. I don't know if DJ put the shafts into the joint to visually inspect the connection but it wouldn't surprise me if he did - I just don't remember reading about it. Someone else may be able to answer better.

For the most, 99.9% of the people doing this modification really like it. I know I like it. It was easy to do and made a big difference in high speed (for the c50) riding.
When I actually get some riding time on mine come spring, Then I will see if I would like to do something like this. So far I have ridden it 1 mile lol. I did notice that shifting by the sound of the motor in that one mile it is a very short first gears, and saw the speed shift points in the owners manual, they are really low.

Thanks !
Marty
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post #165 of 165 (permalink) Old 01-16-2017, 09:27 PM
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You can rev it up some more. Some people talk about shifting from 1st to 2nd when turning. I didn't do that. I let the revs go up a little more and shifted to 2nd after the turn. After the modified drive, the shift to 2nd definitely doesn't feel needed until after a turn.

With there only being 5 gears, that means you will be turning a lot of RPMs at high speeds (70mph+). You can run the RPMs up without a problem in lower gears too, it will just sound different to your ears as compared to the low growl you are used to but you will get used to the sounds you normally create with the engine - no matter what that is.


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