Author Topic: Transmission Problem (Read 2253 times)

Bharris · « **on:** July 25, 2016, 11:35:33 AM »

How much backlash should there be between gears?

I have my engine on my bench, inspecting the bottom while the top is away to be ported. Seems that I have too much backlash between the gears. I noticed that the shifter became very hard to snap into gear just before removing the engine. I haven't split the cases yet to check out what's going on in the shifting mechanism, but in the meantime I have realized that have about 1/8 rotation of backlash at the Counter Shaft (or where the small sprocket was).

Thanks in advance for your help.

huntertools · « **Reply #1 on:** July 25, 2016, 08:57:17 PM »

Just checked two motors and they had about 3/4 to 1 inch of play in the transmission. Seemed normal to me. Hope this helps.
Allen

Tbone07 · « **Reply #2 on:** July 26, 2016, 09:54:00 AM »

I just assembled my bottom-end. Will check this when I get home from work tonight

Bharris · « **Reply #3 on:** July 26, 2016, 11:20:52 AM »

Thanks Tbone. I had another buddy check last night and he has this amount of free movement on the Counter Shaft as well.

I have questions about the transmission too (this is my first time opening the case). If you have some advice for me regarding the tranny then I sure would appreciate it. I have the case split now, but I haven't pulled any gears out because I don't know what to look for. While riding, my shifter was getting stuck just before engaging the next gear. It would go into gear, but I had to put way too much upward force to do it. Same with all of the other gears, but it seemed to get a bit easier with each gear progression.