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bike engine prop tunnel
oadamo - 5/10/07 at 07:03 PM

hi iam gonna fit a bike engine in my locost but does the prop run in a straight line. because i was thinking of making the tunnel smaller to the same size as the back bit. so i could have more room for my feet.
adam


mistergrumpy - 5/10/07 at 07:10 PM

By heck you ask some questions Nice one cos mine are always really bone with obvious answers! In answer I know mine and others have put a slight bend in the prop


oadamo - 5/10/07 at 07:13 PM

quote:
Originally posted by mistergrumpy
By heck you ask some questions Nice one cos mine are always really bone with obvious answers! In answer I know mine and others have put a slight bend in the prop


ive got to much time on my hands lol. i just dont want to be cutting it all up again after its done
adam


mistergrumpy - 5/10/07 at 07:22 PM

Yep I know that too well. I'm forever having to add things and redo them


Jon Ison - 5/10/07 at 07:27 PM

Leave the tunnel till you have positioned the engine ?

It will still be tight in the footwell on the drivers side as the output from the bike gearbox when placed in a car tends to be well over towards the drivers side.

You will be able to make the tunnel lower and probably narrower but to the benefit of the passenger rather than the driver.

You may want to consider moving the engine back a little to ? I stole 6 inch's from the passenger footwell to move the engine back in the chassis.


Avoneer - 5/10/07 at 08:16 PM

^^^^^^^^^^^^

Exactly as Jon says.

Pat...


oadamo - 5/10/07 at 08:45 PM

been havin a good look at the photo archives. ChrisGamlin has a good pic of the prop in the tunnel. see what you mean about it being towards the drivers side jut a thought anyway.thanks for your help everyone.
adam


ChrisGamlin - 5/10/07 at 10:24 PM

This one?

R1 Prop angle
R1 Prop angle


This is a book chassis with an R1 engine which gives a straighter prop than most due to the stacked gearbox on the R1 which makes it a very narrow engine.

When I had the blade installed in the same car, the front corner of the engine head was virtually touching the chassis above the frontmost exhaust port, and the prop was further over towards the driver almost touching the footwell tube.

If you put the engine in at an angle so the head follows the line of the chassis rail you can get the output shaft more central, but there can be disadvantages in doing it that way due to prop phasing etc leading to prop vibration.

Chris