• If your have CLUB EVENTS/RIDE & would like to announce it here,
    Message traxxas-modifier about it :-)

Sprocket Value Computation

C

charge

Veteran
The first one is the stock value (in blue).





* The top speed are computed using 17" Rim and 80/90 rear tyre. The maximum RPM is assumed to be 9000rpm.
* Speedo speed = actual speed + 20% (Malaysia sucky speedo)
* Please let me know if you wanna do ur custom combination. I'll try my best to help you compute :)

I am not mecha engineer, this is some rough computations. The formula I use might not be correct, this is served as reference purpose only :p
 
C

charge

Veteran
Final 1 is the Sprocket that people normally change. Stock sprocket : front = 39 Rear = 15.

By changing the front and rear, u can changing the top speed and acceleration. If u want to go for better acceleration, the top speed will be decreased, and vice versa.
 
goff_d_p

goff_d_p

Super Veteran
i don't think you can fit a 39 front sprockt in the front. the stock rear sprocket is 39, and the stock front sprocket is 15. i think someone mixed it up. it's suppose to be like this 15/39 15 front / 39 rear.

If some one can fit the 39 tooth sprocket in the front please take a picture and show everyone.
 
F

FTD_T135_R

New Member
it's common sense...i never saw or heard a bike having 39T in front sprocket...in my experience with 15/39, 15/42 and 16/39, the best is the 16/39T combination
 
goff_d_p

goff_d_p

Super Veteran
Thrasher, can you show us your sprockets? i really really want to see a 39front sprocket, and how did you fit a 17 on the hub?? really interasted in how you modified the sprockets to fit your bike like that.






bro, just messing with you. i know you confused the set. it's not 39/16. it's 16/39. that is the correct way of saying sprocket combonations. ok? peace bro
 
C

charge

Veteran
Very sorry, my mistake. it should be 39 rear 15 front. I post it the reverse way earlier. Thanks for pointing out goff_d_p and FTD_T135_R.
I actually reversed all the parameters around in the spreadsheet :p
 
F

FTD_T135_R

New Member
its ok charge...and thanks for the info.

@naije82
based on my experience, 16/39T combination is the best so far. only tried 15/42T and ofcourse 15/39T which is the stock.

@trasher
good for you 17 front fits in your bike but i wonder how that combination would perform, can you give feedback sir?
 
N

naije82

New Member
know i using 15/39T not bad...top speed 130/140kmh...i want more speed up...but i dont want to modified my engine...i just want it standard..if just change cdi it ok...not the engine
 
goff_d_p

goff_d_p

Super Veteran
ya there is a 16t front sprocket for a Honda TMX bike that fits, but you also need to change you chain to a 415.
 
F

FTD_T135_R

New Member
@dude
im using stock tires both front and rear...what combination you're using and how does it perform?

@trasher
how is your 15/40T combination performs? topspeed and acceleration compared to stock?
 
dude_pare01

dude_pare01

Super Veteran
i just graduated from break in a while ago.. :mrgreen:

stock tires and all...i tried the limit of third gear,dunno if i tripped the limiter but i was travelling about 103 to 105 kph...i shifted to 4th gear but vehicles in front were to slow so no choice but to slow down..hope to try it again after i change my oil to repsol and my plugs to ngk iridiums
that would be tommorow! :mrgreen:

and try to mingle with the mixture..i havent adjusted any yet
hope i could reach 130kmh..that would be enough for me...hehehe
 
You must log in or register to reply here.
Top