Total newb, hpi engine 3.5

Tiddy

Active Member
Messages
62
I am a newb, I've ordered a new 3.5 hpi engine along with 3 pin flywheel and clutch kit and bell, how do I install these please?
Also I've noticed carb is set half open on low speed needle (I think) do I need to adjust it or leave all needles alone? And adjust my arm on servo?
 

ManMgn

Member
Messages
28
the hsn and lsn should be flush. the idle gap which is the opening when the carb is fully closed should be 0.5 - 1mm wide.
flywheel + shoe assembly
 

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Tiddy

Active Member
Messages
62
I'm now breaking my first ever engine in, I've started it but wheels spin at high speed, what do I do,? Please help
 

Tiddy

Active Member
Messages
62
When I remove glow starter it stalls, and now won't start at all it is nor flooded
 

Tiddy

Active Member
Messages
62
I'm feeling really annoyed I thought new engine would work but I've spent 3 hours trying to get it running to break in engine but the wheels were going full tilt so stopped it, tried adjusting idle but made no difference at all, I can do with some serious helpless asap
 

ManMgn

Member
Messages
28
I'm feeling really annoyed I thought new engine would work but I've spent 3 hours trying to get it running to break in engine but the wheels were going full tilt so stopped it, tried adjusting idle but made no difference at all, I can do with some serious helpless asap
If its stalling when igniter is removed that indicates the needles are too rich, thus the fuel is outing the plug. lean out the needles 1/8 of a turn at a time until it starts. increase the idle gap slightly and lean out the lsn till it starts. do 1/16 of a turn at a time clockwise.
 

Tiddy

Active Member
Messages
62
It's a brand new engine I'm breaking it in, can I adjust the needles on break in?
 

ManMgn

Member
Messages
28
I'm now breaking my first ever engine in, I've started it but wheels spin at high speed, what do I do,? Please help
rule of thumb with new motor is to preheat it during break-in. use a heat gun or a blow dryer to heat it to 180 - 220 Fahrenheit. if the wheels are spinning it means ur idle gap is too wide. reduce it and the rpms should drop
 

Tiddy

Active Member
Messages
62
I tried changing idle but it won't turn any more clockwise and it made no difference
 

ManMgn

Member
Messages
28
It's a brand new engine I'm breaking it in, can I adjust the needles on break in?
if its stalling when the igniter is removed it most likely means the needles are too rich. factory setting are a baseline however flushing needles is vague, therefore it could be 3/8 of a turn richer than actual flush
 

ManMgn

Member
Messages
28
I tried changing idle but it won't turn any more clockwise and it made no difference
then it could be ur throttle linkage. it would be helpful if u could take pictures or videos so its easier to diagnose
 

Tiddy

Active Member
Messages
62
This is turned off and throttle moves to this position
 

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ManMgn

Member
Messages
28
This is turned off and throttle moves to this position
u need to readjust the linkage. the carb should be completely closed when neutral and the gap should be the size of the idle gap set via the idle screw
 

Tiddy

Active Member
Messages
62
It's a hailboxing Tigershark apparently
Can someone explain in lamend terms for me to understand
 

Polar_Bus

Active Member
Messages
59
Tiddy, your just running around in circles and getting nowhere. Your engine break-in settings should have been pre-set and left alone, and you had linkage issues and you messed with the screws and the settings now are all out of sync. You need to stop and get back on track. First step is get your throttle and brake linkage properly adjusted. Watch this vid :

Savage XL - Stock throttle linkage setup for max throttle range - YouTube

Next step is to put the carb settings back to factory :

HSN = 4.5 turns out from seated

LSN = 3 turns out from seated

Idle gap = .040"
 

Tiddy

Active Member
Messages
62
Heres a short video
 

Tiddy

Active Member
Messages
62
Why does my video not upload
Tiddy, your just running around in circles and getting nowhere. Your engine break-in settings should have been pre-set and left alone, and you had linkage issues and you messed with the screws and the settings now are all out of sync. You need to stop and get back on track. First step is get your throttle and brake linkage properly adjusted. Watch this vid :

Savage XL - Stock throttle linkage setup for max throttle range - YouTube

Next step is to put the carb settings back to factory :

HSN = 4.5 turns out from seated

LSN = 3 turns out from seated

Idle gap = .040"
I'm now trying this, I know I sound stupid but only learn via asking my new engine turned up with carb half open, question is do I push it shut and attach the throttle arm, I'm confused. My video won't upload
 

Tiddy

Active Member
Messages
62
Could I cut this bar out 15mm as I can't get screw into engine mount, would it mess up structural strength
 

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ManMgn

Member
Messages
28
Why does my video not upload

I'm now trying this, I know I sound stupid but only learn via asking my new engine turned up with carb half open, question is do I push it shut and attach the throttle arm, I'm confused. My video won't upload
yes u should push the carb shut then attach the linkage
 

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