fulcrum2

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

DJ_Shakespear

Check out Boca Bearings or Acer Bearings, they will have what you need and it should be cheaper.

Roelof

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.

fulcrum2

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...

Roelof

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?

fulcrum2

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

Roelof

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)

wingracer

iTrader: (24)

Yeah I thought so. Both of mine are 6mm. They are older blue heads though.

maxflo777

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

fulcrum2

On the 35+21 based Cordobas and on the newer 35+21 they use the Nova part 17008 which is 7x19x5