7/8 vrs 3/4 upper gear

[THEPASMAN]

I’m looking for some reinforcement of what I’m going to potentially do. Pulled my new to me sidewinder chain case apart to weld tensioner and discovered that my upper gear is not in good shape. I have a brand new 3/4 wide that I think I’m going to install. Till the dmc gear I ordered comes in. Am I asking for trouble as the chain is 7/8 or will I be ok for a couple hundred miles

Thanks IAV

 

[yamamarc]

I’m looking for some reinforcement of what I’m going to potentially do. Pulled my new to me sidewinder chain case apart to weld tensioner and discovered that my upper gear is not in good shape. I have a brand new 3/4 wide that I think I’m going to install. Till the dmc gear I ordered comes in. Am I asking for trouble as the chain is 7/8 or will I be ok for a couple hundred miles

Thanks IAV

Wait for the right one.
You are asking for trouble..imo

 

[KnappAttack]

Yes, you are asking for trouble. DO NOT put that narrow gear in the Winder.
That is for a old 2012 Cat I'd guess with link-belt silent chain. The stock gear is for Hyvo chain. Two very different styles of gear and chain that are not compatible.

 

[yamamarc]

Yes, you are asking for trouble. DO NOT put that narrow gear in the Winder.
That is for a old 2012 Cat I'd guess with link-belt silent chain. The stock gear is for Hyvo chain. Two very different styles of gear and chain that are not compatible.

I believe vipers run them

 

[THEPASMAN]

Thanks
my gut was telling me it was not a good idea. That’s why I asked.
I do believe that that gear is out of a viper.
I’m a bit puzzled why the previous owner put it the brass shift fork pads and didn’t do the gear. Anyways I’m glad I pulled it apart the tensioner wasn’t welded either but screws were tight. 1900km sled
Going to be permanent shortly

 

[twyztid]

I believe vipers run them

Correct. Although I would not run that 13-wide gear, the Viper top gears are very similar to the Sidewinder gears (both hyvo) but the Viper uses a narrower gear for a 13-wide drive chain and the Sidewinder uses wider gear for a 15-wide chain.

 

[Fords4life]

Not saying to do it, but are not bottom gears 13wide with a 15 wide chain?

 

[NYTurbo]

Not saying to do it, but are not bottom gears 13wide with a 15 wide chain?

Yes

 

[Fords4life]

Never thought about it before, but maybe this contributes to the uneven upper gear bushing wear that i see with my sleds, uneven load on upper gear caused by narrower lower gear, i suspect they needed 15 wide chain to handle power of turbo motor, am i out in left field on this idea??

 

[THEPASMAN]

Although it looks the same I test fit the narrow gear into an old chain out of a sidewinder. It is definitely a little different cut. I glad I asked. The bottom gear in my ltx and MTX are both 13 wide 15 wide chain.
I’m glad I asked.

 

[NYTurbo]

Never thought about it before, but maybe this contributes to the uneven upper gear bushing wear that i see with my sleds, uneven load on upper gear caused by narrower lower gear, i suspect they needed 15 wide chain to handle power of turbo motor, am i out in left field on this idea??

No, the issue is the stock bushings rock day one. Some stock ones are better than others but have not seen a single one to date that fit tight.

 

[KnappAttack]

Correct. Although I would not run that 13-wide gear, the Viper top gears are very similar to the Sidewinder gears (both hyvo) but the Viper uses a narrower gear for a 13-wide drive chain and the Sidewinder uses wider gear for a 15-wide chain.

The narrow gear in the OP's first post is not a HYVO gear cut. It is a silent chain cut. You can see it in the tooth profile it is different than the HYVO winder sprocket.