Shelled my 2 speed transmission

Welcome to RCTalk

Come join other RC enthusiasts! You'll be able to discuss, share and private message with other members of our community.

Register Log in

rock-rod

RCNT Basher
Messages
53
RC Driving Style
Bashing, Racing
i was running at the local track finishing up the break in of my newly installed picco boost and 3 mins in started hearing a nasty gear rattle. At first I thought a rock was stuck in the spur gear but upon inspection it was fine. There were two distinct binding points while rolling the truck back and forth. When I got home and disassembled I found the output shaft gear was missing a tooth and the piece embedded itself into the first gear assembly. All of the teeth are chewed.

So what are my options? Did the boost motor kill it? Are there gear upgrades? How about the 3spd? Help.
 

olds97_lss

RCNT VIP
Supporter
Messages
19,374
Location
Dekalb, IL
RC Driving Style
Bashing
In my many years (10+) of running a savage, I've only broken anything in the stock 2-speed trans twice. Once was due to me leaving a screw in the trans case. Made a mess of things. The other was an old 21 version of the trans that didn't have a steel retainer holding the pins in the 2-speed gear.

So, may have been a fluke. Or you landed really hard when on the gas.

I had a 3-speed for a while, but got annoyed with having to take it apart to adjust it and replaced it with a 2-speed version again. That was a stupid design.
 

WoodiE

Kind of good admin
Administrator
Messages
14,822
Location
Lexington, KY
RC Driving Style
Bashing
I agree with @olds97_lss and I too am not a fan of the three speed in the Savage. That said the stock Savage transmission has also been pretty bulletproof for me as well. What kind of running was your doings? Jumps?
 

rock-rod

RCNT Basher
Messages
53
RC Driving Style
Bashing, Racing
I was running the local track taking it pretty easy breaking in a new picco boost .28 motor. Nothing crazy and I have run my revo much harder than that with no issues. As far as I can tell, the powdered metal gear on the output shaft lost a tooth and that tooth damaged the rest of the gears. I have another trans on the way and I think it's possible to swap in the hardened steel gears from the octane transmission. This picco motor is pretty strong and its still being run-in so defintely not producing max power yet. Hope this isn't a sign..
 

olds97_lss

RCNT VIP
Supporter
Messages
19,374
Location
Dekalb, IL
RC Driving Style
Bashing
I run an LRP30 in mine and it does fine with the torque. I also run a steel spur with the slipper pretty tight.
 

rock-rod

RCNT Basher
Messages
53
RC Driving Style
Bashing, Racing
Finally got around to fixing things. I know most don't recommend but I went the 3 speed option and swapped in a set of hardened output gears for the octane transmission.
 
Thread starter Similar threads Forum Replies Date
sur3fir3 just shelled out $400 for a car accident I wasn't even in General Chaos 2
J OFNA LD3 2 Speed Trans Nitro RC 1
M Please help - strange issue with the Abisma A10 Eco Speed controller Electric RC 2
Tsukinoma Tamiya TG10 Mk1 2 Speed Upgrade? Nitro RC 3
Banshee123 HSP 2 speed conversion Nitro RC 7
D My rc nitro hpi rs4 dies when close to full speed any ideas? Nitro RC 16
Holidaydoc Ek4 2 Speed tranny Monster Trucks 0
J Jlb cheetah 120a, jlb j3 speed 120a or kraton 4s? Buggy and Truggy 3
JimmyJamNitroFan Hex OWB bearing in 2 speed transmission problems. Nitro RC 8
LibertyMKiii Arrma Kraton 6s speed run 94.5mph (stock electronics) Arrma RC 4
S Typhon 6s V4 M2C 52 mph top speed Buggy and Truggy 2
S Kraton 6s V4 M2C 54 mph Top Speed Buggy and Truggy 0
S Kraton 4s 55 mph top speed Buggy and Truggy 0
LibertyMKiii LibertyMKiii's dream speed build (shooting for 200+mph) RC Builds and Projects 44
S Outcast 4s top speed 51 mph Buggy and Truggy 3
S Outcast M2C high speed trail Buggy and Truggy 0
Ororc Will the Kyosho Inferno GT2 2-speed fit a Inferno Neo? Nitro RC 26
S BLX Slash wheels for speed runs. Electric RC 1
C LOSI DBXL 1/5 Scale - High RPM, Low speed Issue Large Scale RC 2
Daniel J Rc engine low speed needle tuning Nitro RC 42
batmanninja speed run car Electric RC 3
rednexneffex2 How to tell if my 2 speed transmission is working? Nitro RC 8
WoodiE RPM ESC Cage for Traxxas VXL-3S Electronic Speed Controllers Electronics 2
GoneN60seconds I have a need for speed.... RC Builds and Projects 1
J Sanwa MT44 and RX-482 speed Telemetry? Electronics 0
P My Losi Mini 8ight AVC speed test video. Electric RC 0
Leo3 RJ Speed pro mod tuning. Chassis & Drivetrain 3
TypeONegative considering e revo brushed will lipos increase speed? Traxxas Revo 4
2GMitsubishi Volcano S30 2-Speed Transmission Install "Full Setup" Chassis & Drivetrain 5
WoodiE OS Engines Speed 21XZ-B Spec III Engines 1
craig911 3 speed setup HPI Savage 4
W Low Speed Needle setting Nitro RC 5
A Converting 3 speed to direct drive. HPI Savage 1
N Hyper speed rc wont start Nitro RC 7
E RJ Speed PRO MOD Build Electric RC 20
S Savage 3 speed tranny upgrade HPI Savage 7
B2P Tamiya tg10 mk2 2-speed transmission hpi nitro star T3.0 RC Builds and Projects 4
C How do I clean my high speed needle? Nitro RC 1
WoodiE Axial Yeti 2-speed Transmission Conversion Kit RC Rock Crawlers 7
M OFNA BUGGY8 2 SPEED TRANSMISSION Buggy and Truggy 12
Sweetlou069 question about low speed needle Nitro RC 10
A Will a Savage XL 3 speed fir a Savage X 4.6? HPI Savage 1
Garry Clarke 2 Speed conversion for the Thunder tiger eb4 s2.5 Nitro RC 6
U savage xl low speed needle HPI Savage 4
R can't reach top speed (throttle issue?) Chassis & Drivetrain 9
Ben Willis Acme 2 speed adjustment On-road and Rally Cars 2
T Motor/speed control combos for 2wd slash Electric RC 5
bobaloohoo 2 speed Tranny problem troubleshoot HPI Savage 2
M Difficult Start & High Speed Idle - Help! Buggy and Truggy 7
M turning a two speed to three speed HPI Savage 0
Similar threads


















































Top