Lotusmark2
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| posted on 7/1/05 at 08:57 AM |
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Bike or car engine drive options
Hi all,
I am designing a single seater rear engine car based on a Terrapin plan with quite a few modifications. At present I am trying to decide between car
engine and bike engine......
As I see it car engine is a piece of cake but low on power compared to a bike so getting to the point
If I go the bike route I know that most rear bike engine builders use a chain to a sprocketed diff (big bucks) where as front engine bike boys use an
adapter to fit to a shaft (much cheaper), has anyone done this with a very short shaft for rear engine?
Anyone want to convince me that car or bike engine is the way to go
[Edited on 7/1/05 by Lotusmark2]
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phelpsa
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| posted on 7/1/05 at 10:22 AM |
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I think I recognise this post from somewhere?
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jimgiblett
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| posted on 7/1/05 at 10:25 AM |
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The chain and diff option isnt that expensive. Have a look at the Sylva R1ot which IIRC uses a modified fiesta diff.
link
The Fisher Menace uses a set up similar to what you describe has a prop adaptor on the output shaft of the gearbox conected to diff via 2 UJs joined
together.
link
If its a single seater for track use only I would go for the chain option as you can keep the engine transversely (less oil surge issues) also
significantly less power losses via a chain than a CWP diff.
On the road I am not convinced that a chain is ideal due to the maintenance requirements.
As for engine the light weight of a single seater may mean that you dont have to use the big expensive bike engines. I am sure a 600cc lump will move
it along quite nicely and they are cheap as chips with 100bhp+
Cheers
Jim
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Lotusmark2
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 posted on 7/1/05 at 10:34 AM |
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Adam: fancy meeting you here
Jim: thanks for the links, I will have to give Sylva a call to see if they will sell the diff as a seperate item.
I must admit I am paranoid about chain drives (having been a biker for many years) they can be such a nightmare if you dont keep a very close eye on
them
Oh and Jim, where are these cheep as chips engines
[Edited on 7/1/05 by Lotusmark2]
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jimgiblett
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| posted on 7/1/05 at 11:11 AM |
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The wonders of ebay I've seen 600 engines go for under £400
or for a bit more assurance colibriman has a good reputation here for supply of engines. On his site he's got a ZX6 or CBR1000 for £550.
link
A CBR1000 in a single seater will go very nicely I would think.
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Lotusmark2
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| posted on 7/1/05 at 11:13 AM |
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Cheers for that.
mmmmm CBR1000 single seater
beats the mini engine that the plans were designed for
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phelpsa
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| posted on 7/1/05 at 11:19 AM |
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That was exactly my suggestion 'elsewhere'
Adam
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Lotusmark2
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| posted on 7/1/05 at 11:21 AM |
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yep, everyone is telling me the same.
Cheers
Mark
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JoelP
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| posted on 7/1/05 at 06:56 PM |
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i should sell some of my engines... if the missus ever gets hold of the garage key im in BIG trouble
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Lotusmark2
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| posted on 7/1/05 at 07:03 PM |
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I quite fancy an engine that needs a bit of work, got anything VERY VERY cheap in that garage of yours?
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JoelP
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| posted on 7/1/05 at 07:43 PM |
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i think they all work! got a running fzr1000, a spare, plus two zx9r c's.
you in lancashire? ive been in bolton working all week.
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Lotusmark2
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| posted on 7/1/05 at 07:48 PM |
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you have a u2u
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