Removing Decompression Assembly
- Thread starter traxxas-modifier
- Start date
schmuck
Super Veteran
i dont have that bro, i removed my kick starter heheUse kick start bro..
thon
Super Veteran
xclickclickx
Veteran
Best way is this 
schmuck
Super Veteran
what do you call this sir xclickclickx...Best way is this
xclickclickx
Veteran
after market UMA cam sprocket looks like its light weight aswell i think HKholic is running one, he will know more about the specs materials weights and all that, but only down side to this is when you big bore and have high compression the electric start will work but not when the piston is in the wrong spot therefore you will have to put it in gear and roll your bike so the piston moves into compression strok and then the electric start will get it started, Hope you understand what i mean
schmuck
Super Veteran
yheap!i get what u mean sirafter market UMA cam sprocket looks like its light weight aswell i think HKholic is running one, he will know more about the specs materials weights and all that, but only down side to this is when you big bore and have high compression the electric start will work but not when the piston is in the wrong spot therefore you will have to put it in gear and roll your bike so the piston moves into compression strok and then the electric start will get it started, Hope you understand what i mean
so better use kick starter then...
HKholic
Member
Yep! If you have one, using it with the electric start relieves the struggle(the delay it takes to turn over) the starter motor encounters.yheap!i get what u mean sir
I am left with rolling it in gear and hit the start button to do the same thing.
HKholic
Member
Unfortunately, the UMA is not lighter than this(see below), a modified stock sprocket. But the UMA is a much needed piece for those running a jack-up(stroker) crank with a longer cam chain. The timing ends up being too far off, hence the adjustable cam sprocket.after market UMA cam sprocket looks like its light weight aswell i think HKholic is running one, he will know more about the specs materials weights and all that, but only down side to this is when you big bore and have high compression the electric start will work but not when the piston is in the wrong spot therefore you will have to put it in gear and roll your bike so the piston moves into compression strok and then the electric start will get it started, Hope you understand what i mean
xclickclickx
Veteran
It's an unusual pattern the holes are cut in, do you reckon that was balanced factory with the rest of the unit?Unfortunately, the UMA is not lighter than this(see below), a modified stock sprocket. But the UMA is a much needed piece for those running a jack-up(stroker) crank with a longer cam chain. The timing ends up being too far off, hence the adjustable cam sprocket.
Just contemplating making up for all the weight added in my chunkier lobed experiments!
HKholic
Member
It's possible they are for balancing, but after removing the entire decomp assembly that all goes out the window. Hahaha.....chunky lobes, I like it!It's an unusual pattern the holes are cut in, do you reckon that was balanced factory with the rest of the unit?
Just contemplating making up for all the weight added in my chunkier lobed experiments!
xclickclickx
Veteran
Just sent a mate back in NZ an email to find out more about the balancing, may be possible to lose an extra couple of grams again on the mill
Abbie S Hir
New Member
@ sir boldstardex yup i went to my mechanic and he told me that thats normal to yamaha sniper, cos it has a big engine..@ sir traxxas yes sir i compared the sound to a stock engine like me but mine has more tik tak sound..and today my motor is 1 and 1/2 years old, i observed again a tiktik sound once my motor didnt get start immediately...its like the engine start and slowly turn off and the tiktik sound goes with it when it turn off..please help me again!!!
you need to check the valve adjuster bolt/screw it might be worn out already...
Stockbore
Super Veteran
i think thats normal. specially when the engine is cold. how many mileage does your Mc reach?
Abbie S Hir
New Member
@ stockbore, stock pipe can hit 130 but if muffler only 120...sir traxxas, when we should or how many mileage should we check/adjust our valve clearance in our MC? and today i obsevred again that when my MC got the rpm its like there is a sound in my engine like "nanginginig" ung tunog when the rpm gets high..what the problem of my MC sir? cos normally i did hear that sound on it..tnx..any advice mga sir's, mga master!!!!
smoke_bomb
New Member
subscribring 
Stockbore
Super Veteran
what else did you put in your engine sir? i experienced that with my vixion. if standard elbow it can go 130kph but if i use big elbow, it can only reach 120-125kph