Oliver Jetson
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| posted on 23/7/04 at 03:19 PM |
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Running on ACB10s
Is sump baffling and overfilling with oil enough to stop oil starvation in an R1 engine when cornering hard on a track with sticky ACB10s on a
Locost?
Cheers,
Oli
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ChrisBradley04
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| posted on 23/7/04 at 05:21 PM |
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I ran ACB10's with only a sump baffle in my Fury (same configuration as a locost) without any problems.
I even went on a handling course and was going round and round in circles (about 10m diameter) at about 70mph for 3 minutes without any oil surge.
However, my arms were in agony!
I am not sure you need to overfill the oil. I certainly didn't and I am not sure others have. Hopefully other R1 owners will comment on that.
Regards
Chris
www.fisherfury.com
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Jon Ison
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| posted on 23/7/04 at 05:33 PM |
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overfill is the 1st step to clutch slip, fill to max road or track.
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Oliver Jetson
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| posted on 23/7/04 at 06:28 PM |
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Cheers for the replies guys, now looking positive for gettin the avons.
Chris - I start a year out placement job in August at Nissan in Cranfield (for their crash safety department!), and will therefore be in the Milton
Keynes area. So would it be possible to come and have a look at your car to get ideas for my future R1 transplant?
Cheers,
Oli
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Oliver Jetson
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| posted on 23/7/04 at 07:16 PM |
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Another thing - what difference would be expected from going from my current 175/60/13 tyres to the 185/50/13 ACB10s? It lowers the gearing
doesn't it?
Thanks
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richardR1
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| posted on 23/7/04 at 09:41 PM |
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We run our R1 engined Mini rally car with a little extra oil in it and have had no probs. We use Dunlop CR311 moulded slicks which generate more grip
than the ACB10's we used to use and only do tarmac events so I think that is a pretty conclusive test. I am not baffling the sump on my R1 Indy
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ChrisBradley04
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| posted on 23/7/04 at 10:11 PM |
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Oli,
Sorry mate, I have sold the car now. I loved the R1 powered car and I am sure you will too.
My only advice is 'defensive driving' as you will be so fast on the road people won't see you. Almost being killed twice in the same
week by other road users sealed the cars fate for me. Next time I'll go for a bright colour!!
Regards
Chris
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ChrisGamlin
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| posted on 24/7/04 at 12:12 PM |
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Rich Miles ran a slight overfill on the recommendation of Yamaha France, I think its something like filling it to the normal line but when its running
which is what they use in the race sidecars IIRC. The R1 clutch is a lot higher in the engine than most bike engines so I dont think its as likely to
suffer from clutch slip than say a blade.
He also ran a few trackdays on his ACB10s with no signs of surge AFAIK.
Chris
[Edited on 24/7/04 by ChrisGamlin]
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Oliver Jetson
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| posted on 24/7/04 at 05:17 PM |
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Cheers for the info - looks like it'll be my tyre of choice.
The ACB10s require different camber settings don't they, compared to most other tyres? I think it's coz of their construction.
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ChrisGamlin
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| posted on 24/7/04 at 05:57 PM |
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Yup, cos they are crossplies and not radials, they tend to like a lot less camber on them, sometimes as much as zero camber on the front compared to
the more normal 1-2 degrees negative on radials.
I run them on my live axled car and I actually find they wear a lot more evenly on the back than A032s (radials) because the 32's would wear the
outside edge whereas the ACB10s wear quite evenly.
Chris
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phelpsa
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| posted on 24/7/04 at 06:23 PM |
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I have been told just to run an overfill on my gixer 1100 engine by Chris allanson and the guys from radical (who used to use these engines).
Adam
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progers
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| posted on 25/7/04 at 04:37 PM |
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Oil level
You definitely want to run with a small amount of overfill in the R1. This is what sidecar racers do. Recommended amount is 2-300ml overfill.
I haven't seen any surge on my R1 but I know Rich Miles did see it one track day he did (both with ACB10s). When he checked his oil level it was
close to min. Once topped up all was honky dory.
As a quick check, when the engine is idling you should still just see the oil level in the inpsection window.
Cheers
Paul
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