scutter
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| posted on 21/8/07 at 04:26 PM |
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Lightweight Flywheel
Would
TH
IS Flywheel be a touch to light for a road car?
And does anyone know where the best place to get 7 1/4" clutches from?
ATB Dan.
The less I worked, the more i liked it.
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big_wasa
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| posted on 21/8/07 at 05:24 PM |
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"only 3kg"
Then add the ring gear thats not inclueded.
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DIY Si
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| posted on 21/8/07 at 05:35 PM |
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I'd say it's too light. You'd have an awful idle, and poor low end drivability. Worse in a cammed engine with a race clutch. I had a
similar set up in my mini, and it would idle between 800 and 1500 rpm, and was a right sod in traffic.
Although it would make you a bit quicker.
“Let your plans be dark and as impenetratable as night, and when you move, fall like a thunderbolt.”
Sun Tzu, The Art of War
My new blog: http://spritecave.blogspot.co.uk/
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Mal
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| posted on 21/8/07 at 06:00 PM |
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Flywheel
If it is a steel one it needs to be made from the right grade not mild steel, to have the right frictional properties with the clutch plate.
The seller may know what they are doing, but might just have a CNC machine and not know much about dynamics.
It needs to be balanced after a starter ring has been shrunk on.
Would not touch with a barge pole myself.
Mal
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scutter
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| posted on 21/8/07 at 06:11 PM |
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Fair enough gents, kinda along the sasme line as i was thinking, So the hunt for an 1800 flywheel continues.
ATB Dan.
The less I worked, the more i liked it.
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Davey D
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| posted on 21/8/07 at 06:42 PM |
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i had a lightweight flywheel in my 200sx. standard flywheel is 10kg. mine was 4.5kg.
idling it was no different to standard. driving up long hills made little difference. the thing that i did notice was how quickly it revved. blipping
the throttle on downshoft was very smooth, and it was very easy to match the revs
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andyharding
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| posted on 21/8/07 at 07:11 PM |
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I have a 4kg std clutch one from that seller on my pinto. I think it's still too heavy and would use the race clutch version if doing again. The
above about balancing is bollocks, you only balance a cast flywheel. I tick over at 1200rpm and the engine is heavily modified.
Are you a Mac user or a retard?
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MikeRJ
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| posted on 21/8/07 at 09:54 PM |
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My brother has an ultra light steel flywheel in his mini, coupled with a fairly hot cam (286 scatter) and whilst the idle is a little lumpy,
it's perfectly dirveable in traffic.
Just don't stick a paddle clutch on it, that's what makes traffic driving hard work.
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v8kid
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| posted on 22/8/07 at 07:28 AM |
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Got a lightweight small diameter steel flywheel on my rover with a 7 1/4 sintered clutch, ticks over fine - not lumpy at all. Makes a big difference
to the initial acceleration - would thoroughly reccommend
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ned
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| posted on 22/8/07 at 07:41 AM |
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Dan,
My flywheel came from the same chap as that on ebay (and is probably the same basic pattern ) mine is 2.5kg ish + ring gear. Clutch is the expensive
bit, I picked up a second hand twinplate sintered complete off a caterham owner for £150. Superclutch wanted stupid money for a new one.
Although not on the road my car runs fine with it, ran all day happily on the rolling road when mapping and the idle is not lumpy at all and it will
tickover quite happily (once engine is warm - nothing to do with fluwheel!). Having it setup on injection (like mine) would probably make it idle
better than on carbs - are you mj it?
Ned.
edit: iirc the material was en18 or 24 steel (one was my steel rods, other was the flywheel, can't remember which way round! both purchased from
that guy)
[Edited on 22/8/07 by ned]
beware, I've got yellow skin
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