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N

NITROMITE

Gone - bye bye.
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Location
pataskala, ohio
RC Driving Style
  1. Bashing
My .21 was running better than ever all day, until the OWB crashed. Well i got a new one put it in and its grabbing, "clockwise" GOOD! Put it all back together. tried to start it, the mill bearly turns over and their was a CLICKING sound i never heard before. So i went threw the steps....

remove owb
clean owb
emery board on shaft
dry owb
wd-40
everything


on and on, I took the thing out maybe 10 times. every time i did this the owb was grabbing the shaft very well. i could turn the motor by hand and their was nice compression any thoughts???:word:
 
olds97_lss said:
Emery board on the shaft? Did you happen to take your back plate off the engine entirely or only the starter cover?

What engine is it? The HPI 21?
Click to expand...
yes its the hpi 21 the finger file is suposed to help the owb grab better i learned it from some racers who do it all the time you just ruff the shaft up alittle bit thanks for the reply, and no i did not take off the back plate
 
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What kind of starter? Drill? Rotary powered HPI starter wand? Pull?

To be honest... it almost seems like you put your OWB on upside down. The HPI 21 BB has a spring loaded catch/starter pin inside the engine. When you turn the shaft the wrong direction, the pin gets pushed into the end of the crankshaft via a little trough in the the back of the starter plate. This would make a "tick tick" sound when turned the wrong way.

Except, if you did that and it was a pull-start or you were using HPI's wand (would assume the wand would only spin in one direction since it is made for HPI engines), it wouldn't do anything when you pull the cord or run the starter. As the OWB would just free spin on the starter shaft.

But, if your starting it with a drill, it would be very easy to be spinning it the wrong direction, which would make an upside down OWB spin the starter shaft the wrong way causing the pin to make the "tick tick" sound and then if you spin the other way, you hear nothing since the OWB is free spinning on the shaft.
 
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it is a drill start but the owb is on the correct way the arrow on the owb is against the mill pointing in the clockwise position. I do understand what you are saying about spinning it in the wrong direction!!!! the drill/wond spins counterclockwise spinning the owb clockwise!!!
the engine seems to spin to easy when i try to start it with the drill when its together but when i take the rotostart off and try it buy hand its much harder and seems to be fine. could their be something wrong inside the motor that I'm not notiecing when i turn by hand but do notice with drill do to the power of the drill??? thank you for your help i know this ones a pain
 
I just don't know. I've never had that particular engine, so I don't know exactly whats inside that could be giving you an issue. I only know the parts diagram and thought the pin/spring in the crankshaft was kind of cool.

You sure the arrow is supposed to be against the block? I mean, your rotation sounds right... as does everything else... Again, I really don't have a clue.
 
we had a problem similar to this with my friends pull start, dont remember what brand.
we took it apart and found the pin had gotten shoved into the spring, so instead of pushing back out and catching like its supposed to it didnt even grab.
not sure if thats your problem but could be worth a look
 
i will look into this tonight, i have never had a nitro apart before is their anything i should watch out for , or is it pretty simple? i have worked on other engines just not nitros
 

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