HPI Savage Slipper Clutch Eliminator Spur Gear.?!?

Orgnl21beest

Member
Messages
39
I just shredded my 18 year old stock savage 21 spur gear .. is this slipper clutch eliminator spur gear compatible with my truck (savage 21) what are the benefits of getting it .. if any
Thank You 😊
 

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lokky

Well-Known Member
Messages
290
Not heard of anyone using one, can you not get a replacement plastic spur gear?
 

Orgnl21beest

Member
Messages
39
Yes one is in the mail as we speak ! I was just wondering about this part and if it had any advantages or not.!
 

Polar_Bus

Active Member
Messages
51
You can't run stock HPI Savage clutchbells with a steel spur gear you will gouge the clutchbell pretty quickly. If you want to swap to a steel spur you need to run a "hardened" clutchbell. Honestly in all my years of bashing i've never stripped a standard spur gear. I've also never crashed head on at full speed. Many times when a spur gear melts and strips it's because of a worn / dirty / overheated clutch .
 

Orgnl21beest

Member
Messages
39
Yep I ordered just a standard plastic , but it’s a 47tooth instead of 52.. how will that effect my truck , more speed?
 

Polar_Bus

Active Member
Messages
51
Yep I ordered just a standard plastic , but it’s a 47tooth instead of 52.. how will that effect my truck , more speed?
In "theory" yes you should gain a small amount of top speed. However that is ONLY if your engine has enough hp and torque to pull the higher gearing. A smaller teeth count spur = greater load placed on the engine. In certain circumstances when swapping to a smaller spur you actually loose top speed. All you can do is experiment with the 47T spur and see how you like it. Gearing theory is a very deep and complex subject.
 

Polar_Bus

Active Member
Messages
51
Yea I honestly could care less about speed , I want the torque lol !!
Then you are wanting a lower gear ratio. You get this by either reducing the teeth count on the clutchbell or increasing teeth count on your spur gear. Gearing is all about your personall wants. You cant have insane top speeds and sick snappy low end acceleration. You have to pick your primary need and adjust your gearing accordingly. I too favor lower gearing as its a bit less loading on your clutch and trans. Lower gearing however can be difficult to drive as you have so much throttle response low in the rpms , just learn to be smooth with your throttle finger.
 

Orgnl21beest

Member
Messages
39
Ok ! I’ll most likely buy a less tooth clutch bell eventually when I get the Force28 motor , if I remember correctly it has to be a stock savage clutch bell , someone on here said (possibly yourself)!
 

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