Jump to content

MSuper V3S Shaking at low speeds


Recommended Posts

Hi all,

I recently sold my MSuper V3S and am posting on behalf of the buyer, who has had some issues only a week after the sale. While I had no issues when I owned it, and we didn't notice any issues while he was test riding it before the sale, he says he's now having issues with shaking and a weird sound at low speeds, simlar to this post: https://forum.electricunicycle.org/topic/6572-msuper-making-some-weird-noises-and-vibrations/

He says it really mostly happens at low speeds and shakes the whole shell.

I'm trying to help him diagnose the issue: he tightened the axle bolts, took the whole thing apart, nothing was loose, put it back together, emptied and refilled the tire.

Any ideas what he might do to fix this?

 

Thanks!

  • Like 1
Link to comment
Share on other sites

try to lay the wheel on its side, take a straight edge(hammer handle, etc...) against (very close) the tire and slowly rotate the tire and see if it is true, may be the rim itself or the tire... even though the tire was deflated, sometimes you need to lube the bead so it seats evenly when you inflate it...  Just a thought....

  • Like 2
Link to comment
Share on other sites

Be careful going down that road.  If it's a for sale as is where is sale, and the wheel was fine when he inspected it and bought it I think he has to accept whatever he did to it probably caused the issue.  Unless you offered a warranty, it's not your responsibility any more.  He could have crashed it cracking the shell at the pedal support or bent the rim.  Hopefully it's something simple like tightening up the control board screws, but it also could be a damaged shim washer around the axle? 

  • Like 2
Link to comment
Share on other sites

5 hours ago, Hunka Hunka Burning Love said:

Unless you offered a warranty, it's not your responsibility any more.

Your absolutely correct. Unfortunately it’s tough for me to sell any item to a stranger and then have it break down. I even took a video of me riding my old ACM around to prove it was in excellent shape. After the guy fell when the ACM acted erratically we tried to diagnose the problem via numerous PMs. The problem was isolated to a defective control board so I had Jason send him a new one. Each situation is different. 

  • Like 2
  • Upvote 1
Link to comment
Share on other sites

23 hours ago, Marty Backe said:

The first thing I would do is check and tighten the 4 corner screws that hold the control board tight to the shell. If there is any floppiness to the board you will get vibrations (can be bad) in the wheel. This just started to happen on my MSuper V3s+. Out of the blue. It was working perfectly 3-wheels ago. I then took it for a short ride and it was vibrating like crazy. Opened the shell and three of the screws were loose. Tightened them them up and all symptoms went away.

I would also think of a loose board when i hear the Symptoms...it is quite important to check the board screws from time to time!

A vibrating Wheel is one Thing.....but when a screw falls off and touch the wrong parts it can/will make a short and send you flying!

  • Like 1
  • Upvote 1
Link to comment
Share on other sites

On 8/6/2018 at 11:27 AM, Rehab1 said:

Your absolutely correct. Unfortunately it’s tough for me to sell any item to a stranger and then have it break down. I even took a video of me riding my old ACM around to prove it was in excellent shape. After the guy fell when the ACM acted erratically we tried to diagnose the problem via numerous PMs. The problem was isolated to a defective control board so I had Jason send him a new one. Each situation is different. 

Same when I sold one of my wheels on, videos of me riding it - buyer claims 'wheel wobble' easiest solution was to cover the £50 for his bike shop to tighten the axel. 

  • Like 2
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...