BKoz559

My Feedback: (3)

I just got over a transmission problem that Idiscussed in another thread which has since been repaired but, now I just lost my pinon gear.

I was driving the Flux for the second time since the transmission rebuild when Ihear the gear mesh sound getting nastier and nastier. I inspected the spur and pinon and discovered the the pinon looks as it does in the photo below. I'm frustrated because I can remember that the gear mesh has been set with what Ibelieve is a reasonable amount of play. Just enough for some paper to fit between the two. I've never had problems like this with my B4 and 48P gears but, then again Idon't believe I drive as hard as some folks do.

What could have caused the pinion to get munched like this? The spur shows no visible signs of wear, only the pinon. Is the stock HPI pinon manufactured from a softer material to allow a "breaking point"in the drivetrain? Was my gear mesh set incorrectly? At $11-$15 a pop, continuously replacing pinon gears will add up fast. What can Ido to prevent this in the future?

For the record I run my HPwith 4S and Iintentionally try not to do backflips and full throttle burnouts from a standstill. I drive itin an open lot with hard packed dirt. It drifts more than it jumps.

t9dragon

My Feedback: (11)

The HPI pinions aren't the strongest ones around. I have gone thru 3 HPI pinions, I have heard Robinson Racing makes some good pinions. Currently I am using one from Castle Creations without any issues..

Freezetron

Welcome to HPI Flux ownership. Your next lesson to be learned is that HPI pinions don't last worth crap. Replace it with an RC Monster, Robison Racing, or even Novak hardnened pinion.

basketballfan60123

My Feedback: (2)

How about the optional HD pinion that HPI sells?
How good is that?

jbooker82

My Feedback: (4)

and use the ultra thin paper you get from a reciept from a gas pump or credit card machine. Walmarts reciept paper works well too.

Freezetron

Nope, still not durable enough

etivac13

http://www.amainhobbies.com/product_...inion-Gear-20T

http://www.castlecreations.com/products/ccpinions.html

would these work? i'll be replacing mine too...

BKoz559

My Feedback: (3)

Damn.  I was starting to figure that this sort of thing is just part of the experience.  I suppose nothing is unbreakable but, it would be nice to run it for a while without worrying what's going to snap, bend or grind next.

I'm looking up Robinson gears as I've always had good experiences with them in 48P.  Perhaps Robsinson Mod 1s will serve me just as well.

etivac13

i just ordered the robinsons...i hope its better than the stock...