Has my pullstart packed-in already? :(

[TheSweeney]

I've only had my car (Smartech Winner Sport ) for a couple of days, I havnt even broken the engine in properly yet, and it seems like the pullstart has broken already.

It just 'slips'.
It seems to 'catch' once at the very start of the pull and then just slips for the rest of the length.
If I pull it really slowly it catches a few times but if i pull quick it slips all the way.

Is it completely broken?
Can it be fixed?
If it can't be fixed, is there another way to start the motor until i find a replacement (A replacement might take a long time)?
Does anyone know if a pullstart other than a smartech (ie one for a hpi t-15) would fit and work on my SMT .15CXP engine?

:depress: :help:

ANY help would be greatly appreciated.

Cheers.

 

[El Pirata]

Sounds like your 1 way nut is slipping. This could be due to a defective nut or it could be dirty. Remove your engine. Remove your pullstart. Be careful not to unspool your pullstart as you remove it. Remove the 1 way bearing. My personal recomendation for cleaning is let it soak in some bad nitro for a few minutes. Add a few drops of after run oil to the 1 way nut and put everything back together. If this doesn't work you'll probably need a new 1 way nut.

 

[TheSweeney]

Thanks for the advice El Pirata, I'm gonna take it apart tomorrow and have a look at it.

A few (very noobish) questions:

Quote: "Be careful not to unspool your pullstart as you remove it"
How strong is the PS spring? Is it gonna take my eye out as soon as there is a slight gap between the engine and PS assembly?

Quote: "let it soak in some bad nitro"
I'm sorry bud, I know i'm dumb but what do you mean by bad nitro? is that the name of a cleaning liquid/solvent or do you mean some 25% nitro fuel or something????

Finally, Could running the engine way too rich have caused the One Way Bearing to have become dirty? thats if it is dirty rather than broken.

Thanks again for your help.

TheSweeney

 

[lykan]

Running a motor rich can definetaly cause the one way to be more prone to slippage. When mine starts slipping, its usually afer it's been sitting for a bit, or I put the needles back to their default settings for a whole new tune.

Sometimes after a few carefull pulls, if he motor fires up, the one way bearing in my xtm will self-clean and not slip the next time I go to pull it.

The spring in the pullstart is like that in a lawn mower or weedeater. If you don't look behind the pull start, and remove it carefully the spool can stick to the engine hen you pull it off. The spring will unwind like that of a wind up toy. Its a PITA to put back together.

AS for soaking in bad nitro, i belive he meant dirty, or unusable fuel.

 

[El Pirata]

Originally posted by lykan
Running a motor rich can definetaly cause the one way to be more prone to slippage. When mine starts slipping, its usually afer it's been sitting for a bit, or I put the needles back to their default settings for a whole new tune.

AS for soaking in bad nitro, i belive he meant dirty, or unusable fuel.

I never heard that one but the next time my pull start goes one the fritz I will try that.

Yes, I did mean unsuable fuel. Generally when I put my nitros up for more than a day I will drain the fuel remaining in the tanks or the lines into another container specifically for cleaning purposes.

 

[lykan]

I found out kinda the hard way. New to nitro,crap fuel with way too much oil content. It would gum up after it sat for a day, and no way it woudld grab. I would struggle to get it started.

After I got a few sputters out of the engine, and a bit of fresh fuel/lube dripping out the pipe, the one way would go back to working fine.

 

[TheSweeney]

Thanks for clearing things up folks, its very much appreciated.

I'm sort of looking forward to taking this thing apart tomorrow, I just hope the bearing is just gunked up and not broken. I'm sure finding one of them around here would be real easy

Thanks again for your help fellas, once again you have put my mind at ease (until tomorrow when my POS 'Smartech Winner Sport' Gives me some more grief )
I love it really At least this way I suppose I'll learn more about Nitro cars/engines than if I had a car that worked for more than 1 day at a time

Cheers

TheSweeney

 

[itsme]

1 Way Bearing

I've Been Having Same Problem, Just Got to Know Were To Look For Help Thanks Guys You All Rock!!

 

[TheSweeney]

Mine seems to be cleaning itself.
Yesterday, I was about to take the pullstart off the engine so I could clean the OWB.
I thought: "i'll give it one more try before I remove the engine".
I pulled it and it seemed ok. I started the car and took it for its first run (since breaking the engine in). The run went ok and I stored the car away.

Today when I went to start it again the PS was slipping completely! after a few tries its started to catch more and more until the car started. I ran the car for 5 mins then stopped. and now the PS seems as good as new!!!

Whats the deal with that? Is it cleaning itself?
Is there a way to help prevent it going like this now and then? Do you think its happening 'cos I'm still running TOO rich???

I'm getting a temp gun tomorrow so I'll be able to give the car a propper run and begin to tune it

See ya folks.

TheSweeney

 

[SkyMaxx]

Sometimes temperature has a lot to do with the one way's ability to do its job. If it is really cold outside or the mill is cold steel, the metals are contracted and the bearing may slip. If it gets a little warmer outside or as the mill warms up, the metals expand and the one way grips just fine.

 

[TheSweeney]

Ahhhh, that explains it then. It has been on the chilly side around here lately.

Anyway, Thanks a lot for all your advice fellas, things are slowly starting to come together. I'm a NOOB :shrug: but I'm learining :thumbsup:

Cheers
TheSweeney.

 

[scottm]

1 ways can start to slip when they have too much oil in them. My OS rgxp was terrible. I had to keep a can of carb spray handy to blast it out. So running rich means more oil seeping into the 1 way. Sometimes leaning it out helps, sometimes you have to clean it or replace it. My Hyper 21 has the opposite problem When its 1 way has too little oil, it starts to drag and spins the starter backward, breaking the spring.

 

[spanko123]

ya sweeny the way you explaned the symptoms is exactly how i explain mine. it catches once then slips the rest of the way, and if you pull slow it will catch better. but I've cleaned it and cleaned it and i just can't get it work. i dont get it, it is an old beraing so i think it just might be worn, but i heard sumthin about running rich might cause that. anybody no any other ways of slippage other than dirty?? cuz me and my buddy have BIG problems with these things

 

[SkyMaxx]

Spanko123, Read this and it may answer your questions.

 

[TheSweeney]

Thanks for helping SkyMaxx, but is that link aimed at me? either way, its linking staright back to this thread.
Or was the link aimed at Spanko? :shrug:

Cheers,
TheSweeney


OR Was that sarcasm that just flew right over my head

 

[SkyMaxx]

Sorry, TheSweeney. That last post was indeed aimed directly at Spanko. Just missed his direct addressal in my post. It has, since, been fixed.

 

[TheSweeney]

Eeeexxxxelent
For minute there, I thought I was being told off in a sarcastic way LOL.

Cheers m8.

TheSweeney