Rogue Se7ens
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| posted on 19/1/08 at 10:21 PM |
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bike engine angle
My question has to do with the vertical angle of a bike engine when mounted in the car. I tried to search out an answer but haven't found
anything yet so I'm hoping for some input.
I have a couple project that I am working on that will use a bike engine, and I am wondering if the engine will be affected adversely by tilting it
back on the axis of the output shaft, (making the direction of the cylinder bore more vertical)? I've been working the design around the R1
engine and will maintain the wet sump. If the engine will be fine tilted back then for future reference, can it be tilted the other direction so the
bores are moved more toward the horizontal plane making a lower profile?
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StevieB
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| posted on 19/1/08 at 10:34 PM |
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You need to keep the angle of the engine as similar to the bike as possible (ie, as it was designed).
Make the sump pan roughly level with the ground, otherwise you'll have oil surge/starvation issues and a short lived engine.
Compared with a car engine and gearbox, it's still a very light and compact unit.
[Edited on 19/1/08 by StevieB]
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Rogue Se7ens
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| posted on 19/1/08 at 10:45 PM |
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That was my main concern, oil starvation. One application I am designing for is a front wheel drive Mini, and I'm trying to keep it as compact
as possible.
[Edited on 19/1/08 by Rogue Se7ens]
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StevieB
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| posted on 19/1/08 at 11:14 PM |
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It may be possible, but you can certainly throw an R1 in the back of a mini without problems
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Rogue Se7ens
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| posted on 19/1/08 at 11:34 PM |
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That will come later, but first I plan to market the car as a composite bodied FWD Mini.
 
Rescued attachment mini frame assy.jpg
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Chippy
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| posted on 20/1/08 at 12:04 AM |
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You can mount any engine at a different angle to that which the makers set it at. But you need to redesign the sump to match the new angle, together
with the pick up pipe, and any baffles. Easy enough if the sump is tin, but not so easy if its alloy. HTH Ray
To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy
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lsdweb
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| posted on 20/1/08 at 12:54 AM |
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Rogue Se7ens
I can't quite tell from you drawing but, if that's an R1 engine, you'll have to find some way of reversing the drive or you'll
need a very good rear view mirror as it will have 6 reverse and one forward gear!
;-)
Wyn
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Rogue Se7ens
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| posted on 20/1/08 at 06:20 AM |
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I'm laying it out both ways 'forward' and 'backward'. I like the way pro-motive has carried out their kit
http://www.pro-motive.co.uk/4.html and it seems to have some advantages, except of course you have to go through a gear set to reverse the direction
of rotation.
www.roguese7ens.com
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Bob C
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| posted on 20/1/08 at 05:42 PM |
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"it will have 6 reverse and one forward gear! "
except it won't have the forward gear.... ;^)
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ChrisGamlin
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| posted on 20/1/08 at 06:43 PM |
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Go for a on older (98-03) R1 as they're about the narrowest, most upright bike engine available thats suitable for a BEC
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