RE: REMOVE THE WASHER!  
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All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> RC Monster Trucks >> Losi Monster Trucks >> RE: REMOVE THE WASHER!
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RE: REMOVE THE WASHER! - 12/11/2004 4:18:24 PM   
scottyfusion


 

Posts: 136
Joined: 11/27/2004
From: milford, MI, USA
Status: offline 		just got my brand new mach .26 back from horrizon. it took 3 weeks to get it back (and a lot of phone calls and headachs!!!). i would sugest talking to doug or shane at horrizon. anyhow went to take out the washer and suprise suprise....no washer. it came with a pull start so i had to put the roto start on it but it uses the same backplate. so here is my ? why would they even put the washer in ther i mean the pull start uses the same parts internaly it just dont make sense!!!

does anyone follow what im saynig here??


also one more thing. the people that have opened their engine will follow this.. the spring in the roto start (between the roto start and the backplate) puts constant lateral presure on the "washer". not only is it spining at 39k and hot as h@$% it also is being squeezed by said spring!!! im not a engineer or anything but even i could tell u that sooner or later that little peice of metal we all know and love as the washer WILL explode!!!!!

well thats all i feel much bettr!

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RE: REMOVE THE WASHER! - 12/15/2004 4:48:53 AM   
4wheelin


 

Posts: 471
Joined: 12/20/2002
From: Baldwin, MD
Status: offline 		I read the pullstart version has no wahser.

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RE: REMOVE THE WASHER! - 12/15/2004 4:53:47 AM   
jefx



Posts: 3562
Joined: 8/19/2003
From: mach pk, IL,
Status: offline
quote:

ORIGINAL: 4wheelin

I read the pullstart version has no wahser.



The pullstart version doesn't have a washer. The washer is there to take out play in the roto-start version and to keep it from rubbing the conrod.. Apparently the roto start wasn't built to the correct specs, and instead of scrapping all the rotostarts, they used a washer to make up for the bad machining.

< Message edited by jefx -- 12/20/2004 3:46:56 AM >

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RE: REMOVE THE WASHER! - 12/20/2004 1:30:22 AM   
dankcharlie


 

Posts: 6
Joined: 10/17/2004
From: Wilkes-Barre, PA, USA
Status: offline 		THANK YOU!, Thanks so much for the warning i have about 1 1/2 gal. through it and i was not noticing any wear on the washer, well today 1 tank later my 1 way went so i took a look and low and behold there it was just dangling on the edge!

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Pack it up!!!!!!!!!!!!!!
I have some paintball stuff i want to trade for r/c stuff.

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RE: REMOVE THE WASHER! - 12/20/2004 3:46:56 AM   
jefx



Posts: 3562
Joined: 8/19/2003
From: mach pk, IL,
Status: offline 		No problem, that's what this thread is for.

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RE: REMOVE THE WASHER! - 12/21/2004 4:41:41 PM   
cpirao


 

Posts: 86
Joined: 12/12/2004
From: North Arlington, NJ, USA
Status: offline 		Just Spoke with Steve at Horizon Hobbies who in-turn spoke with an engine technician, and He confirmed that removal of the washer does not, in itself, void the warranty.

Can anyone confirm whether the backing plate is sealed by way of a gasket or an o-ring, or some other means of a sealant.

Thx much

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RE: REMOVE THE WASHER! - 12/21/2004 6:52:56 PM   
dankcharlie


 

Posts: 6
Joined: 10/17/2004
From: Wilkes-Barre, PA, USA
Status: offline 		nope no seal on the backplate!

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Pack it up!!!!!!!!!!!!!!
I have some paintball stuff i want to trade for r/c stuff.

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RE: REMOVE THE WASHER! - 12/21/2004 7:12:27 PM   
cpirao


 

Posts: 86
Joined: 12/12/2004
From: North Arlington, NJ, USA
Status: offline 		How can there be no seal? Are you telling me that the metal plate is sitting on metal? How does the factory ensure an airtight fit?

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RE: REMOVE THE WASHER! - 12/22/2004 12:09:31 AM   
Eracer76


 

Posts: 221
Joined: 12/13/2004
From: Yorkville, IL, USA
Status: offline 		I just got my new LST #9302 on Monday, guess what?
It still has the washer! Mine was a nice and thin silver washer just waiting to burn up, so...... I removed it!

The back plate does have a seal!! It is a rubber O-ring style seal. I also cleaned out some metal shavings I found, added some good RTV silicone to the back plate and carb to seal them up better.
Now its ready to start for the first time, I cant wait!


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RE: REMOVE THE WASHER! - 12/22/2004 12:14:16 AM   
jesterrc


 

Posts: 8
Joined: 8/12/2004
From: san leandro, CA, USA
Status: offline 		There is a small black o-ring at the intersection of the flange and the round part of the back plate that extends into the motor. I didn't use any sealent but it definitely won't hurt. I read that after the engine is broken in you could remove the washer. I had between 5 and 6 gallons of fuel (Blue Thunder) on mine before I took it apart and it looked beautiful but I removed the washer any how. Neither me nor any of my buddies have had this problem. Could the fuel or lubricant have anything to do with it? I'm not smart enough to know more than the instructions so we have all used Blue Thunder as they suggested. Just a thought. By the way, the car guy at my local shop said he was told the motor doesn't need these for break in any more and they are no longer included. Nothing lasts forever but this truck rocks!

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RE: REMOVE THE WASHER! - 12/22/2004 3:25:57 AM   
bigtrucklst


 

Posts: 65
Joined: 12/3/2004
From: walkerton, IN, USA
Status: offline 		I am through 2 and a half gallons. I took the washer out. Actually It just fell out with the one way bearing. the hole was shaped like an egg. Glad i took it out. It did not have much time left.


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RE: REMOVE THE WASHER! - 12/24/2004 6:41:16 AM   
danedelman



Posts: 190
Joined: 12/24/2004
From: Easton, PA, USA
Status: offline 		I just got a LST and ran about 1/2 gallon through. I am glad I just joined because I never heard of this. I remember not using a shim or washer on my Savage rotostart and blowing one way bearing faster than ever. Will this happen when I remove the washer??

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       Post #: 37

RE: REMOVE THE WASHER! - 12/24/2004 7:24:45 AM   
jefx



Posts: 3562
Joined: 8/19/2003
From: mach pk, IL,
Status: offline 		You may experience a little wear on the rotor, and possibly the conrod, but it's better than having a blown engine.

The engine was designed for a pull start, and it will only operate flawlessly with the pullstart assembly. Using the rotostart "requires" the washer, but it is a faulty design.The washer will fail due to the stresses of the engine.

Neither removing the washer or leaving it in is the perfect solution, but removing it is by far the lesser of two evils.

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RE: REMOVE THE WASHER! - 12/24/2004 2:16:31 PM   
danedelman



Posts: 190
Joined: 12/24/2004
From: Easton, PA, USA
Status: offline 		Alright, I gave in and removed the washer. I had 1/2 gallon at least through and it seemed to be in new condition. Just a little cupping around the shaft hole. I sure hope nothing goes wrong because of this. thanks

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RE: REMOVE THE WASHER! - 12/25/2004 4:12:59 AM   
bigtrucklst


 

Posts: 65
Joined: 12/3/2004
From: walkerton, IN, USA
Status: offline 		I dont think removing the washer will hurt anything. But not removing I believe will eventually kill it.


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RE: REMOVE THE WASHER! - 12/25/2004 11:14:02 AM   
swolrath


 

Posts: 51
Joined: 6/11/2004
From: , MO, AUSTRALIA
Status: offline