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Old 01-14-2011, 02:12 AM   #1
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Default Replacement bearing for Novarossi

Hi there,

I need a replacement for a Nova 17008 (7x19x5mm), but need rubber shields.
Does anyone know where I could get one?

Thanks a lot and best regards, Stefan
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Old 01-14-2011, 03:50 AM   #2
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Hi there,

I need a replacement for a Nova 17008 (7x19x5mm), but need rubber shields.
Does anyone know where I could get one?

Thanks a lot and best regards, Stefan
Check out Boca Bearings or Acer Bearings, they will have what you need and it should be cheaper.
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Old 01-14-2011, 04:00 AM   #3
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The 7x19x6 is a standard size bearing you can order at any bearing manufacturer even companies like SKF and INA but the 5mm thick version is difficult.
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Old 01-14-2011, 04:52 AM   #4
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Quote:
...but the 5mm thick version is difficult

I know! Still working on my rain car for the new season. The chassis is ready by now, but I still look for solutions to "waterproof" the engine.
If I can not find a "RS" type front bearing I will run a buggy engine instead...
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Old 01-14-2011, 05:35 AM   #5
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Originally Posted by fulcrum2 View Post
I know! Still working on my rain car for the new season. The chassis is ready by now, but I still look for solutions to "waterproof" the engine.
If I can not find a "RS" type front bearing I will run a buggy engine instead...
Buggy engine in the rain is no problem, the preformance with an onroad exhaust is quite good, I have runned a WS7-II on short tracks.

Maybe an idea to find another crankcase and crankshaft with normal bearings?
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Old 01-14-2011, 07:19 AM   #6
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Thanks for all your advise Roelof, much appreciated.
Will try the buggy engine for sure.
On the other hand, I have two worn out 35+21 based engines. They got the 7x19x5mm bearings with metal shields. Would you run them in the rain, or is it senseless to try without rubber shields?

On more question: How do you "set-up" a rain engine? My strategy so far: head gap like normal (0.7mm), very hot plug (5 or 6), lexan under the motor mounts and aluminium foil around the cooling-fins. I know a shorter cooling head would keep the temps up nicely, but sometimes the track dries during a final and then you are glad when you just can remove the foil and adjust the carb for better performance.

Thanks again, Stefan
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Old 01-14-2011, 10:11 AM   #7
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Normal 35+ has the 6mm bearing, the older ones for sure.

Rain setup for an engine:
- place a piece of lexan between chassis and engine mounts
- use a small head (I have an Novarossi airplane engine head)
- use plug 5 with normal headclearance and have some spares in the pit
- use an INSBOX with a cut off airfilter (no filter)
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Old 01-14-2011, 10:44 AM   #8
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Normal 35+ has the 6mm bearing, the older ones for sure.
Yeah I thought so. Both of mine are 6mm. They are older blue heads though.
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Old 01-14-2011, 02:53 PM   #9
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I have a Cordoba WC (C1/C2 rod) and although I have not removed the bearing, the crank shaft has a longer valve/midsection than that of a standard buggy 14.5 crank, like a Toro Nero ,367, FMS, plus 21-5, 21-7 etc, which I know for a fact that the front bearings are 6mm wide, maybe its a 5mm I don't know for sure...

xe
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Old 01-15-2011, 12:49 AM   #10
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On the 35+21 based Cordobas and on the newer 35+21 they use the Nova part 17008 which is 7x19x5
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