Finally, I know whats wrong!!!

SLIM19198 · 17-07-2006 08:10PM #1

Finally got around to looking at my OS18 revo engine, And I think I know whats wrong with it!!!!

The Problem, Woudl start up but would not stay running, and sounded rough!!!

Have given it a thorough look over and the only problem seems to be missing rubber seals on the exhaust making it useless???

O.S. Exhaust Seal O-Ring

Would it be something as small as this causing all my problems???

And if it is, goddamn, I just ordered a 3.3 engine this morning

g5hn710m4xpdwy · 17-07-2006 08:15PM

yes, that would cause an air leak in the engine

BFassassin · 17-07-2006 08:17PM

you would not be getting full compression in the engine. at least you know that there is nothing major wrong with the engine and you can always sell it or the new 3.3

SLIM19198 · 17-07-2006 08:24PM

If only I had the time to look BEFORE buying the 3.3

g5hn710m4xpdwy · 17-07-2006 08:26PM

there both great engines, the os engine I would think is more reliable

tallus · 17-07-2006 08:49PM

That would definetly cause a loss of compression, I mean have you ever tried to pullstart an engine when the exhaust is not properly connected to the engine....... it almost feels like there's no plug in the engine.
*edit* revo and t-maxx owners might as well ignore that comment as they have easi-start? and some hpi medels have rotostart. Though anyone using a pull starter will know what I mean.

g5hn710m4xpdwy · 17-07-2006 09:20PM

if its like pulling the pull start when tehres no plug, yes, yes i do!

Plug · 17-07-2006 09:29PM

Theres alot more things to check than just that:
1)fuel lines
2)tank
3)cooling head(where the plug goes in and where it's joined to the crackcase)
4)back plate
5)Where the pipe joins to the manifold.
Check these all first;)

SLIM19198 · 17-07-2006 10:04PM

Plug, I checked the engine for compression before, just forgot all about the manifold seal, bought this truck as is and it was in a non running fashion!!

Reason it took so long to figure out is because of the way it was when i got it!!

Imagine taking a revo down to seperate parts, then getting someone with no idea about them to rebuild it without a manual!!!!

thats basically the way I bought it (From another boards user no less :O )

Dont worry blahblah, I wont tell em it was you

Plug · 17-07-2006 11:45PM

It was me:o

Not really tho:D

g5hn710m4xpdwy · 17-07-2006 11:47PM

PLUG! join in on me and coolwings postalotmoment!:D

coolwings · 17-07-2006 11:51PM

SLIM19198 wrote:

...Imagine taking a revo down to seperate parts, then getting someone with no idea about them to rebuild it without a manual!!!!

I thought that was what 90% of modellers did

g5hn710m4xpdwy · 17-07-2006 11:53PM

3 out 4 people try rebuilding, but theres always 1

SLIM19198 · 17-07-2006 11:59PM

This was reassembled, with the gearbox MASHED together the wrong way, diffs were reversed so wheels spun in opposite directions, brakes were locked tight, throttle was non responsive, the steering was crossed, need i say more?

g5hn710m4xpdwy · 18-07-2006 12:04AM

oh yes, you need to say more

SLIM19198 · 18-07-2006 12:13AM

Flunked wrote:

oh yes, you need to say more

Wiring was disconnected including optidrive, motor was not running, came with a whole box of spares though :O

vectra · 18-07-2006 01:05AM

SLIM19198 wrote:

came with a whole box of spares though :O

Ermm..
Maybe you made a mistake..
I think if you put al those "SPARES" together you would end up with a Revo..

SLIM19198 · 18-07-2006 08:24AM

Nah, no second chassis

vectra · 18-07-2006 08:43AM

SLIM19198 wrote:

Nah, no second chassis

Ah well.
It was worth a try..

SLIM19198 · 18-07-2006 09:03AM

Dont get me wrong, there is probably enough there for a second revo :O

spare transmission, engine, a-arms......

vectra · 18-07-2006 09:07AM

SLIM19198 wrote:

Dont get me wrong, there is probably enough there for a second revo :O

spare transmission, engine, a-arms......

I must buy a new receiver pack as I think my one is gone "dodgy"
I only get around 5 tanks out of it now before it dies..:(

Oh. Eeebay... Where are yuooooo..??

vectra · 18-07-2006 09:20AM

Sounded like it was in some mess when you got it..
Was it meant to be new?
Hopefully you got it cheap enough to cover the bother you had with it..

SLIM19198 · 18-07-2006 10:51AM

For what i got it was reasonable!

Thing has a roll cage and alu arms and mounts/rockers as well!

Actually, 2 rollcages, one full and one small rollcage!

g5hn710m4xpdwy · 18-07-2006 12:19PM

now that you will have 2 engines, you can have a second revo- just gtet the parts needed and build it up over whatever lenght of time. you will have 2 very good powerful revos

vectra · 19-07-2006 01:24AM

Flunked wrote:

now that you will have 2 engines, you can have a second revo- just gtet the parts needed and build it up over whatever lenght of time. you will have 2 very good powerful revos

Might not be a bad idea Slim.;)

Sell one off to cover your costs.:cool:

SLIM19198 · 19-07-2006 08:25AM

To do that, I would have to go through boxes and sort out all the stuff

Maybe next year

vectra · 19-07-2006 09:30AM

SLIM19198 wrote:

To do that, I would have to go through boxes and sort out all the stuff

Maybe next year

But if you do it bit by bit it would be worth it eventually.

Are you gonna use the os18?

SLIM19198 · 19-07-2006 09:41AM

Il probably try out the OS18, saves me breaking in the 3.3 (instant gratification

)

Have ordered the seal from tower hobbies, shipped last night, whats the average wait time with tower for small packages shipped via International Surface?

g5hn710m4xpdwy · 19-07-2006 09:50AM

I would guess a week

SLIM19198 · 19-07-2006 09:52AM

That aint too bad, was waiting 6 weeks the last time i ordered a truck from there :S

vectra · 19-07-2006 09:54AM

SLIM19198 wrote:

Il probably try out the OS18, saves me breaking in the 3.3 (instant gratification )

Have ordered the seal from tower hobbies, shipped last night, whats the average wait time with tower for small packages shipped via International Surface?

Good idea
Try the os18 for a few days.
Then break in the 3.3.
I would say you will need at least 10 tanks to free these engines up..mine kept getting stuck on TDC for about 5 or 6 tanks.. It is perfect now ans had massive power last night..
Then compare both engines.;)

Well, I ordered the extra "A" arms last week,
They got shipped out on the 13th
Havent arrived yet.;)

Finally, I know whats wrong!!!

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