On-Car Driveshaft Balancing - Part 1 of 2 - EVA Strobe Light

[@TheSignstoSee]

Thank you so much for teaching us Old Dogs New Tricks with the new Gadgets. I purchased a used Eva2 and got the Blue Chip. This really is an amazing tool. You can literally balance or locate vibration dampening any rotational device. Thank you for your clarity, Truly you are a gifted teacher.

[@carlfarrington]

I've been considering doing this for ages now - bought an EVA years ago, and I have a P1 vibration according to Vibrate. Thanks for the excellent video, this makes it really clear and I'm looking forward to doing it tomorrow on my 545i BMW.

[@WeberAuto]

+Carl Farrington Thank you! I am glad it was helpful.

[@MarcAOuellette]

Excellent video to watch when your going to sleep. Paint is more interesting to watch drying

[@chopperstalkbaggerswalk5042]

The talker in the video has no idea what "get to the point" means

[@engamen87]

Thanks for sharing these advanced and professional tips , we are waiting for part 2

[@WeberAuto]

Haitham Ameen Thank you, it should be posted in a few weeks.

[@engamen87]

We can not wait for your interesting and useful tips

[@SadaruddinZLappo]

Great Video, Why is it balanced closed to the differential, why not closed to the transmission? Thank you very much.

[@tomascharles5080]

I like vids like this where you learn something new everyday thanks for the upload.

[@WeberAuto]

Thank you!

[@WeberAuto]

+pmessinger, Thank you for your feedback. I wish the strobe had not come through so bright. It didn't look that bright while I was doing it on the truck. Luckily you can still see that is was shining near the small factory balance weight.

[@sjakan123]

Hi, how big unbalance in grams on a propeller shaft in a 2 ton pick up truck will you say there can be, before the human body can sense it?

[@chekelley6861]

I'm gonna have to buy one of those things!

[@robertbrz3586]

I need to buy one of these Eva2 units. Now, the question becomes, can you use *any* NVH meter? I am trying to see if I could use one of the cheaper units to trigger the timing light. I would guess the Eva2 has a voltage output at which the threshold (ie any signal over 4) will then send a pulse that can be read by the timing light. I am pretty resourceful so either way I will figure it out however if I can get a headstart that would be great. :)

[@WeberAuto]

Robert Brisky Hi,I am not aware of another NVH unit that can trigger a timing light. Best wishes and thanks for watching.

[@rosliron]

very good explanation ,very thankful

[@WeberAuto]

Thank you!

[@dangerdavefreestyle]

Did you notice any differences putting weights at the front if the shaft vs the rear? It is common to find a weight at each location of different grams and different positions. And when one is changed, does that affect the other? Or can this hose clamp method be done properly on one end of the shaft at a time and provide an overall benefit?

[@troche565]

Very interesting and informative video. I will study this video over and over and learn how to do it myself. It will be much more cost effective than sending the propeller to have it balance by for example Westport Machine Works. Until now I had been considering the Heat Straightening and balancing job. I just need to know where to buy the analyzer and the approximate cost. The timing light I have. Thanks.

[@WeberAuto]

Thank you!

[@ecosse33]

Great video

[@WeberAuto]

Thank you!

[@sonoma314]

Great video. Now I know that you can't just send a drive shaft out to be balanced, nor do you need to. How do I check run out? Dial gauge? Thanks

[@WeberAuto]

True! See my other video on runout checks kzbin.info/www/bejne/p4qppGytjt-poNU

[@dangerdavefreestyle]

At the factory when vehicles are made does the driveshaft get balanced on the vehicle, or is it bolted on as an assembly prebalanced?

[@parskardan7996]

hi.thanks for this vedio.thats intersting ...just i want to know how we can buy ...

[@WeberAuto]

Thank you!, ebay

[@plimoth]

Are the hose clamps considered a permanent fix or just for balancing? Would welded weights be attached after the balancing process? I would think on a work/ farm truck that drives over tall weeds and grass and snow banks that the clamps would get fouled up or get knocked off.

[@SorinPetcuStoplaStup]

Thank you for your professional efforts, in order to share this. It will be so much for me to know, if this method is appropriate for balancing aircrafts propeller also... Thank you.

[@WeberAuto]

Thank you, no it would not be appropriate for a propeller.

[@vtownboxingfan]

Great informational video, thanks for the upload ... I guess this question will probably be covered in Part 2, but can you tell me about the weights themselves? would they be welded on in place of the temporary hose clamps?

[@BWeezy-sw1wy]

No you leave the clamps on. He sort of mentioned that when discussing the labels that are the clamps.

[@AndyFromm]

i had a driveshaft shortened that i didn't notice any shake from before. now it shakes around 60-75 mph or so roughly staring at 2000 driveshaft rpm. i checked for run out on the cut side but there was almost none. i bought one of these tools and put weight were the strobe said. it says it reduced the shake but feels exactly the same on a test drive. am i missing something?

[@WeberAuto]

Yes, the u-joint working angles must be equal. The u-joint caps must line up with each other within 3 degrees. Imbalance could also be an issue.

[@AndyFromm]

@@WeberAuto I'll check it again but i think im within 2 degrees

[@AndyFromm]

@@WeberAuto I took off the driveshaft. angles are about 0.3 degrees off with my digital angle finder. drove the vehicle without the rear driveshaft using the front axle (4x4) and had no shake.

[@WeberAuto]

If it has a slip yoke at the transmission, excessive up and down play (vertically) can cause runout while driving. There is zero endplay on a new vehicle. The more play there is, the more the driveshaft will whip while rotating . I have seen this cause a vibration many times.

[@AndyFromm]

@@WeberAuto the slip is part of the driveshaft, it has bolt on flanges on both ends

[@happikon]

Does any vibrometer will work to fix drive shaft balance?

[@WeberAuto]

Probably; if properly used, implemented, and interpreted.

[@sonoma314]

question- Is it best to do this at the rear or differential or is there any reason to do this at the transmission? thanks

[@WeberAuto]

You should do it on the end with the highest amplitude number.

[@davebohn5850]

Are there plans for part 2 being released soon?

[@WeberAuto]

+Dave Bohn Hi, yes, sometime in the next month or so. Thanks for watching!

[@DonziGT230]

Shouldn't the front end of the shaft also be balanced?

[@thomascarpenter8445]

Is it possible to do this procedure at a lower RPM than 2100, or is this the absolute lower limit of this tool?

[@WeberAuto]

That is the limit of that tool

[@russell4257]

Are you able to provide the name and contact details for the suppliers of the EVA2 I have not been able to find them online. I have tried finding contacts for SPX Kent-Moore without success. Great video, is Video 2 available?

[@WeberAuto]

Hi, the EVA and EVA2 are discontinued. Try eBay, there are usually some used ones for sale. Video 2 is here kzbin.info/www/bejne/m5jHcp2pltice7M Best wishes!

[@geojor]

thanks for this...

[@andrewclydebell797]

Where are you guys located? Can you reco a shop in Vegas? I have a 1967 Chevy van with some what I believe to be d shaft vibration.

[@luisn.7258]

So I have a one piece driveshaft on my 07 Mustang GT, vibrates at 45 to 55mph. Would the angle be a factor since I have a shop install it?

[@fhmatlabjasim8546]

Hi, I have two questions and I will be very grateful if you help me. When I set the EVA on low range, using the Yes/No button as you instruct me, it goes back to the high range. Is there anything I can do to fix the issue? Can I use the high range to measure vibration? Thank you so much.

[@WeberAuto]

I do not know why yours is doing that. As shown in the video, you pick the range that matches the actual rotational speed of your driveshaft.

[@fhmatlabjasim8546]

HI, I can not set my EVA to low range. Is there any way to do that? Have I missed something to do it? Thank You

[@WeberAuto]

The Yes or No buttons are used to select the range once you select the Strobe button. Best wishes

[@Limou551]

I used to balacing shafts witout any of these tools or machines, all by and and brain use. Old school mechnics are the best, very very accurate.More than these machines.

[@tvcorralavila1145]

How safe is it to run a car at high speed on jack stands?

[@rossmitchell8255]

This bloke should read bedtime stories to kids.He is sending me to sleeeeeeeep zzzz zzzz zzzzz

[@WeberAuto]

Thanks for your feedback. You can adjust the playback speed of the video by clicking on the gear icon on the lower right side of the screen.

[@williamobrien6380]

Hi, great video, has anyone ever tried to do this on an engine (harmonic balancer)?

[@clevc112]

Before you start this you first should make 100% that the wheels are both balanced.

[@zozilla]

i just changed out the u. joints will that effect the drive shaft and start vibrating ??

[@WeberAuto]

+Alonzo Scurlock Hi, yes, changing u-joints can cause vibrations for several reasons. I am about to release a series of videos on u-joint service that might be helpful to you. Subscribe to my channel kzbin.info for notification of the video releases. The most common error in changing u-joints is not installing the driveshaft back in the original position verses the pinion flange. You should always mark the pinion flange verses the driveshaft tube/flange and put it back exactly in the same position. If you do not do this, you can cause excessive driveshaft runout which can cause a vibration. There are many other reasons for a vibration after changing a u-joint. Watch for my new videos here in the next week. Best wishes.

[@johnycash8291]

I think tires should have taken off. Sensor may pick up vibration from tires too.

[@WeberAuto]

Johny Cash Hi, I understand your thinking here, but the tires are spinning 3.42 times slower than the driveshaft. Even if the tires were creating a vibration, the frequency of a tire vibration is too slow to affect the EVA's interpretation of the accelerometer's reading of driveshaft speed related vibrations. In other words, it won't affect the driveshaft balancing procedure. Thank you for watching!

[@johnycash8291]

WeberAuto That's right. You got a point there.

[@lawpilot8526]

7/18/20181. What would inform me that my 98 Mustang GT's driveshaft needs to be balanced?2. Please, at the start of each video, state the date; just say "Today is 7/18/2018" and be sure to state the year.3. Does each car manufacturer balance the driveshaft on each car before delivering to a dealer?

[@WeberAuto]

Thanks for your feedback. 1. The date each video was posted is listed below each video just above the video description. 2. A driveshaft needing balancing will produce a first order driveshaft speed related vibration (See www.vibratesoftware.com). If you have eliminated excessive driveshaft runout, then balancing is an option. 3.Each driveshaft is balanced, bit not on the car. Best wishes.

[@whatsshaken]

Maybe a dumb questions will this procedure be the same on all wheel drv where my front shaft was recently replaced and something is vibrating. Also why are there support jacks under the axles?

[@WeberAuto]

+Chris W. Rohlfs Hi, great questions! Yes, it would be the same for a front driveshaft. The axles are on jack stands so that the suspension system is sitting loaded at the correct height. If the suspension is allowed to sag, it could cause a 2nd order driveshaft vibration (2 shakes per revolution) that could affect the accuracy of the balancing procedure.

[@pmessinger]

If you'd have backed off with the strobe we'd have been able to see the marks and more of them. Too bright that close!

[@adamkalman6011]

this is how they do it on funny cars with 10k HP

[@WeberAuto]

Thank you for your feedback

[@clevc112]

$600. Cheaper to buy a driveshaft or send it off.

[@montgomeryjordan4231]

Thank you Mr. Obama.

[@WeberAuto]

+Montgomery Jordan Thanks? I am not sure is that is a good thing or a bad thing. Thanks for watching anyway!

[@dgc940]

Ive watched several of your videos and no offence but its fatigueing you talk so SLOW and eats up so much time getting to the point. I go into video setting and speed it up to 1.25 and so much less exhausting and you sound like a normal conversation. Just assuming but bet students leave class exhausted. Am I wrong? Pretty sure he teaches people/kids that dont know how to gap a spark plug! Reminds me of schools dealers made me go to for full shop warranty rate. I never looked forward to them. I think most teachers are mechanics that were too slow to make a living on book time.

[@engamen87]

Where are you my friend

[@pootisspangle6636]

I use vibrations to study the human species, human beings very interesting civilization stage apes.

[@mikewhitcomb6558]

If you have competent driveshaft shop anywhere near you, you would be way ahead of the game to just remove and have someone do it for you as far as I'm concerned (being as I build driveshafts for a living). This voo doo magic might be cool if you didn't have anyone nearby to do the job, but what a bunch of monkeying around. And it requires 2 people. And you have to stand under a running car with the driveshaft going a gazillion RPM. And putting hose clamps on your driveshaft, unless it's a total emergency bush fix, is fucking mickey mouse.

[@WeberAuto]

Thanks for your feedback. Balancing the driveshaft at a driveline shop will not compensate for an imbalance in the pinion companion flange, pinion gear or the transmission/transfer case output shaft/flange. System balancing will.

[@larrychristopher9147]

Send it out, way cheaper