Skip to content
View in the app

A better way to browse. Learn more.

Trials Central

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Having problems after replacing woodruff key

Featured Replies

21 hours ago, faussy said:

Are you seriously saying the previous woodruff key was made from a penny?! When i seen the state of the heads of the Philips screws i knew someone had obviously been playing silly buggers with your ignition at some point in the past

Shouldn't matter what the woodruff key is made of, its only purpose is to locate the flywheel correctly. If the key is constantly sheering there is another issue. Timing as has been said, faulty ignition, or the taper/ flywheel is damaged. 

  • Author

Pictures of the flywheel:

I think it looks okay but then again I have an untrained eye when it comes to this stuff, there’s a slight bit of damage on the taper and on one of the raised parts inside the flywheel

A0E4F7A0-BC01-4E1C-827B-6C14C57F151E.jpeg

6CCFDA1E-8BE8-432A-BE92-DB72233C9B71.jpeg

B7502EFA-AFBA-40AF-ACA8-23B680F9E0A2.jpeg

Can't see the matting surface on your photos.

With a sharpie pen, paint all conical axle surface. Put flywheel on place hold it while you spin the motor.

Paint should be removed / scrached on entirely surface showing good contact.

If not, use some abrasive paste (car popet valve grinding paste) or improvise with small sandpaper betweed both surfaces.

Turn virabrequim while hold flywheel  untill you have good contact patern.

  • Author
13 hours ago, cascao said:

Can't see the matting surface on your photos.

With a sharpie pen, paint all conical axle surface. Put flywheel on place hold it while you spin the motor.

Paint should be removed / scrached on entirely surface showing good contact.

If not, use some abrasive paste (car popet valve grinding paste) or improvise with small sandpaper betweed both surfaces.

Turn virabrequim while hold flywheel  untill you have good contact patern.

It’s very lightly scratched on the inside of the flywheel, is this a good thing? Cheers

Cascoa did not mention removing the key before you try this trick, the idea is to let the two conical surfaces rub against each other and remove the ink you have put on, this shows how good the tapers are. The drive for the flywheel is through the close fitting, tightly torqued up taper. The key is there just to set the timing so your penny key should have worked.

As cascao has mentioned grinding paste , i had the same thing on my old Beta stripey spent time doing it but it paid off never had that again

  • 3 years later...
On 4/3/2019 at 7:38 AM, Tom_H123 said:

It’s very lightly scratched on the inside of the flywheel, is this a good thing? Cheers

You ever get it runing and what was the problem 

Worth trying a new plug since they are cheap and easy. Some work out of the engine, but stop working when you install them. I've had that cause backfires with no start.

Try a timing light and see if you are getting spark at the right point.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.