8n flywheel teeth

[Doug 13]

The teeth on my 8n fly wheel are all angled. Unless it is a tractor thing I would say not normal.

 

[Den N Ms]

Doug 13 , The teeth are angled so the drive gear engages easier.Your good if all the teeth are intact and not half missing in one spot.

 

[JMOR]

(quoted from post at 20:10:51 10/09/22)

The teeth on my 8n fly wheel are all angled. Unless it is a tractor thing I would say not normal.

/quote]Sounds like a terminology problem to me.

Straight cut gears:

these gears are not "straight"

 

[John in Mich]

Helical gears provide more tooth contact in the same space as a straight cut or
spur gear. They provide more tooth strength and a quieter transmission.
However, they also require thrust washers to handle the pressure that wants to
slide the gears in opposite direction to each other.

 

[Doug 13]

(quoted from post at 04:51:41 10/10/22) Doug 13 , The teeth are angled so the drive gear engages easier.Your good if all the teeth are intact and not half missing in one spot.

Ok thanks, I just haven't seen a fly wheel in auto or heavy equipment like a Ford 8n.

 

[wore out]

(quoted from post at 17:10:51 10/09/22)

The teeth on my 8n fly wheel are all angled. Unless it is a tractor thing I would say not normal.

/quote]

Doug, ''Back in the day'' of inertial starter drives in both the tractor and auto world flywheel ring gear teeth were typically ''chamfered'' to allow for better/quicker starter drive gear engagement.

As time moved on and starters with a solenoid and shift fork mechanism attached to them to positively engage the drive to the ring gear became the norm chamfering of the ring gear teeth was no longer needed.

Some replacement ring gears for older stuff sold today omit the chamfered teeth and can work just fine if the starter and drive are in good condition.