InitialD

Hey, do you by any chance drive a 950R?

InitialD

Hi Mark. I don't know if what I'm going to say would be good news or is correct info... It could be caused by the engine crankshaft being bent. Did the car hit the 2 speed / clutch side? Did you strip any spurs or pinions?

I had that happen in Thailand race. My pinion got scraped on the tarmac after getting T boned (luckily shark pipe !) by a 1/8th scale car while practising. Found that the 2 normal clutch bearings just went bust simultanously. Somehow I had radio problems after that accident and could not continue practising. I went back to the hotel later on and changed to another engine for the race day next day and kept the other engine and only noticed the bent shaft when I came back home from Thailand...

If I were you, I'd take out the engine and the piston / sleeve / conrod out. Leave the crankshaft in with the bearings and try to spin the crankshaft manually by hand. Observe if the crankshaft tip wobbles...

InitialD

Exactly what you do... Usually, I just spray using a nitro cleaner or soak it ! If it's still gritty, I just throw it away.

markp27

Thanks for the tip - I look at it

markp27

Do you think the Serpent bearing oil is heavy enough for the centax bearings?

InitialD

That's a good question. I never degreased the original bearings in the clutch. I used them as is and only use the cleaning gum to take out dirt from these bearings externally. Once they are toast, I just throw them away. Because they are small, likelihood that the balls in the race would be damaged at such high speeds and heat.

Furthermore I think the light oil would spin inside the clutch if applied too much on the bearing.

markp27

The crank looks ok at first glance - I haven't taken it out of the motor, but I undid the glow plug and span the fly wheel - I could see no deflection in the movement of the crakshaft.

I can't remember where the dasterdly Mugen hit, but I see that my exhaust has a bit of a dent in it from the pulley, so maybe it was on the opposite side where he hit.

No spurs or pinions affected.

On a side note, my gears on my centax are looking pretty worn - do they wear quickly?

Cheers, Mark.

InitialD

Sometimes it's difficult to see. Especially if you spin it like that. The bend could be very minor. Almost undetectable when you spin it like that. But once you spin it at higher speed, you could see the slight deflection if it's slighty bend.

It only takes a specific knock on the crankshaft (front of the Centax clutch) and the crankshaft could be bend slightly.

They do wear faster than say pinions on the 705. I guess it's due to the finer pitch. Although mine wears, I am still able to use them. In fact, I have not changed any yet due to wear. Only changed once due to damage accident in Thailand.

markp27

Checked the crank - it's fine - no bends Nice to look inside the motor, though - first time I'd taken it to pieces

I'll have to get some spares for this, I think

Cheers, Mark.

roadrage

iTrader: (14)

InitialD no i dont drive 1 but i wish,is there sum1 my age that does?

cox049

Mark, those bearings take huge high RPM's so keep the oil as thin as possible

SupermaxxRich

iTrader: (16)

So any tips "D" on keeping the dog bones in place when running the front diff? I'd really appreciate some help, thanks....

Marcos.J

iTrader: (239)

thanks for the set up "D"

Brett.w

I have just purchased an apex infinity charger to charge my reciever and glow plug cells can you please tell me what amp rate i should be charging at?

InitialD

I would charge the receiver anywhere from 0.5 to 0.8 Amps. Max would be 1 Amp as they are AAA type cells. For the glow plug cells, I would charge it at 1 to 2 Amps as they are C type cells. Make sure the Apexi charger is able to charge 1 cell as the glow plug ignitor consist of 1 cell only. Not many chargers can charge a single cell. For the Tx pack if you have (AA cells), I would also do about 1 Amp for charging.