who's running a 2028 Castle

[dasboata]

I guess they need a 1/4 shaft ,, I figured turning a 457/3 I would be good,, but I guess the 11 HP destroyed the 3/16 shaft is 50 ft live and learn what about the long motor shaft does that need to be cut so the collect is a little closer to the motor I'm thinking it should ,,

[RaceMechaniX]

I run 1/4” with mine.

[rol243]

I guess the 11 h.p. electric would be simular to a 90 size glow engine , 1/4 inch shaft for sure.

[dasboata]

I run 1/4” with mine.

Thanks guys Tyler what about the Long motor shafts I have at least 5/8 of exposed shaft behind the collet thanks chris


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[rol243]

Chris, if the shaft was a 5mm diameter size i would cut it down shorter but being an 8mm it should be fine at that spacing.

[dasboata]

Chris, if the shaft was a 5mm diameter size i would cut it down shorter but being an 8mm it should be fine at that spacing.

Yes it 8 mm thanks man


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[RaceMechaniX]

Chris,
I don't like extra shaft off the end of the motor if I can avoid it. I did cut the stock 2028 shaft down so I only have room for a thrust washer if needed and the collet.
If cutting the motor shaft means you need to replace the flex shaft too, then it can probably wait.

-Tyler

[Moonie]

Chris,
I don't like extra shaft off the end of the motor if I can avoid it. I did cut the stock 2028 shaft down so I only have room for a thrust washer if needed and the collet.
If cutting the motor shaft means you need to replace the flex shaft too, then it can probably wait.

-Tyler

Me to.

[dasboata]

Chris,
I don't like extra shaft off the end of the motor if I can avoid it. I did cut the stock 2028 shaft down so I only have room for a thrust washer if needed and the collet.
If cutting the motor shaft means you need to replace the flex shaft too, then it can probably wait.

-Tyler

You know I knew that,, I just needed a little push LOL , reciprocating mass like that hanging off the end of the shaft could do some damage if suddenly goes out of balance , where if it was cut shorter and closer to the case it would be much safer and less vibration thanks Tyler

Me to.

Yea and me too lol need that push ,,,I have to re do the drive line anyway to 1/4". I'll just take the cut off wheel to it thanks Chris

[rol243]

pretty hard to bend 8mm hardened steel thats only about 1 inch long.

[RaceMechaniX]

The biggest reason is to reduce the radial forces on the bearings from any imbalance in the coupler and/or shaft.
Shorter shaft and a snug fitting coupler are key.

[dasboata]

pretty hard to bend 8mm hardened steel thats only about 1 inch long.

not at 30,000 rpm better safe then sorry thanks guys !!!!