arrma senton pinion

[jimmyrace]

upgraded the senton to a brushless setup do i need to change out the pinion? or all the gearing as a whole this is NOT a bashing rig it a RACING rig , thxs

 

[Mrgoodwrench35]

I've never heard the senton referred to as a race truck. Where do you race? If on a track, you might want to consult with them as there are usually restrictions on motors/gearing.

Generally, when changing from brushed to brushless, it will be necessary to change gearing according to the motor KV rating. More information as far as current gearing and what brushless setup you have would be helpfull to assist in getting the gearing correct.

 

[jimmyrace]

Novice class LSRCC i found that my 5 year old grandson has been able to better control the 4wd then a 2wd at this point he is just lacking a little speed on the straight away and am trying to find the correct gearing 3300 kv

 

[9x19]

I ran mine with a 20 tooth pinion and 57 tooth spur on a 3300kv brushless.

 

[jimmyrace]

I ran mine with a 20 tooth pinion and 57 tooth spur on a 3300kv brushless.

Thankyou i will give that a try, looks like it will be in the spring tho snow on the way

 

[Beer_Goggles_RC]

20t pinion w/57t spur on 2s will put you at about 40mph on the straight, maybe even a little faster as the tires balloon (assuming you're running the 2.85 internal) which is going to be a pretty massive difference coming from a brushed setup.

He may be able to keep up or even pass on the straight, but my particular concern would be the control while in the air. Without a steady trigger finger, the 4wd may end up kicking pretty hard with a throttle blip. I would recommend starting at a 15t and working up or down from there depending on how his control is.

But I've never ran a senton, so @9x19 might be on point.

Most pinions are sold in packs anyway, so maybe just buy a 15-20t pack?

 

[DavidB1126]

20t pinion w/57t spur on 2s will put you at about 40mph on the straight, maybe even a little faster as the tires balloon (assuming you're running the 2.85 internal) which is going to be a pretty massive difference coming from a brushed setup.

He may be able to keep up or even pass on the straight, but my particular concern would be the control while in the air. Without a steady trigger finger, the 4wd may end up kicking pretty hard with a throttle blip. I would recommend starting at a 15t and working up or down from there depending on how his control is.

But I've never ran a senton, so @9x19 might be on point.

Most pinions are sold in packs anyway, so maybe just buy a 15-20t pack?

Yea that's what I was thinking. I think 17 or 18T is a even setup. Fast enough but not too fast. Or even 16T.

 

[RustyUs]

Upgrading/installing a motor with more RPM than what you're used to... you'll generally drop down on the pinion tooth count. Just like all the 2wd/4wd Senton short course truck platform possibilities/variables, gearing will depend on driving style, motor, track, battery, length of time being ran, etc., etc. After finding out the manual has no gearing recommendations, I'd be looking at the brushless model to see what comes stock and use that as a starting point if I had no help. Infrared thermometer should be in your arsenal especially for situations like yours. Also, pluggin' in the numbers on a speed calculator with stock gearing and then pluggin' in numbers of new setup... you can compare approximately what to expect speed wise.

You'll end up with drawer full of different tooth count pinion gears in no time. Experiment. Have fun. You may find a trigger finger likes a taller gearing while navigating chicanes and such obstacles better... it's about feel.

 

[9x19]

20/57 was the box-stock setup on the Senton 3S.

 

[jimmyrace]

20t pinion w/57t spur on 2s will put you at about 40mph on the straight, maybe even a little faster as the tires balloon (assuming you're running the 2.85 internal) which is going to be a pretty massive difference coming from a brushed setup.

He may be able to keep up or even pass on the straight, but my particular concern would be the control while in the air. Without a steady trigger finger, the 4wd may end up kicking pretty hard with a throttle blip. I would recommend starting at a 15t and working up or down from there depending on how his control is.

But I've never ran a senton, so @9x19 might be on point.

Most pinions are sold in packs anyway, so maybe just buy a 15-20t pack?

Thankyou for setup advice and the racing advice much apprecitated

 

[jimmyrace]

Yea that's what I was thinking. I think 17 or 18T is a even setup. Fast enough but not too fast. Or even 16T.

thanks for all the help you guys on this forum are awesome

 

[jimmyrace]

I ran mine with a 20 tooth pinion and 57 tooth spur on a 3300kv brushless.

thanks for the help

Upgrading/installing a motor with more RPM than what you're used to... you'll generally drop down on the pinion tooth count. Just like all the 2wd/4wd Senton short course truck platform possibilities/variables, gearing will depend on driving style, motor, track, battery, length of time being ran, etc., etc. After finding out the manual has no gearing recommendations, I'd be looking at the brushless model to see what comes stock and use that as a starting point if I had no help. Infrared thermometer should be in your arsenal especially for situations like yours. Also, pluggin' in the numbers on a speed calculator with stock gearing and then pluggin' in numbers of new setup... you can compare approximately what to expect speed wise.

You'll end up with drawer full of different tooth count pinion gears in no time. Experiment. Have fun. You may find a trigger finger likes a taller gearing while navigating chicanes and such obstacles better... it's about feel.

thank you for all the help ,HAVING FUN is what its all about