DANMAN
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| posted on 2/3/12 at 06:20 AM |
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New to BEC. A few questions.
Hi guys.
I am new to BEC's and this forum for that matter. I currently have a Locost 7 with what is essentially an EVO3 engine (it's a bit of a
hybrid) which is making 350HP and moving about 730KGs. I have taken it off the road to build a new Lemans style body from scratch which has been going
on for about three years now. I am looking to purchase a Stuart Taylor bodied Locost 7 over here in Oz from a fellow (a member on this forum) who
imported it a few years ago. I am currently having issues in my state trying to get around road registering issues as BEC's over here are a
nightmare to get on the road. There are only two in NSW that squeezed through before they brought in a bunch of new regulations stopping them.
I have a few questions about BEC's. The car in question has a 99 fireblade engine in it. Once moving from a standstill (using the clutch) is it
advisable to shift up and down through the gears with using the clutch once moving. Around town I figure I'd use the clutch but from the videos
I have seen of BEC's they are being smacked up and down through the gears, is this a standard scenario or are these BEC's fitted with flat
shift kits?
Also what would be the best diff ratio for a top speed of say 120mph?
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Hugh_
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| posted on 2/3/12 at 06:47 AM |
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You won't need the clutch to up-shift, even round town as it can be done very gently by squeezing the gear lever then lifting briefly from the
throttle. Downshifts you need to use the clutch.
Good luck with it
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snapper
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| posted on 2/3/12 at 06:58 AM |
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The size of the wheels and tyres has a bearing on top speed.
In essence a 3.6 will give about 110 to 115 a 3.38 120 to 125.
There are gear speed calculators that will allow you to look at the options
There is a rare 3.14 diff ofereix optin are the Range Rover Freelander at 3.21
I eat to survive
I drink to forget
I breath to pi55 my ex wife off (and now my ex partner)
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NigeEss
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| posted on 2/3/12 at 07:48 AM |
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The very first post in the BEC forum is a sticky to the diff ratio calulator.
Clutchless upshifts get easier the faster you go but unless you have some
sort of trickshifter use the clutch coming back down.
Are the rules different state to state ? My bro in law imported his ST Locoblade
into Perth a couple of years ago and got it approved.wouldn't be the same one
would it ??)
Time is an illusion. Lunchtime doubly so.................Douglas Adams.
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DANMAN
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| posted on 2/3/12 at 01:24 PM |
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quote:
Originally posted by NigeEss
The very first post in the BEC forum is a sticky to the diff ratio calulator.
Clutchless upshifts get easier the faster you go but unless you have some
sort of trickshifter use the clutch coming back down.
Are the rules different state to state ? My bro in law imported his ST Locoblade
into Perth a couple of years ago and got it approved.wouldn't be the same one
would it ??)
May be the same one. He is in Perth and his name is Ewan. Seems like a nice bloke and is a straight shooter from what I can gather.
Thanks for the info guys. I'm not sure what wheels/tyres it is running, I'll have to check into it.
I'm having a hard time comprehending the idea of changing gear at 12,000rpm, certainly something I'm not used to! How many rpm do you need
to feed these things for normal take off from a stand still? 2000rpm-ish?
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Hugh_
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| posted on 2/3/12 at 01:37 PM |
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In traffic mine would pull away at idle. 2000 is plenty even for reasonably swift getaways. Some BECs have very sensitive throttles which can make
pulling away smoothly and without revving the nuts off it difficult.
In terms of changing gear at 12k, I never thought of it like that, just as near the red line. Like car engines you can tell its time to change by the
pitch, power etc., you get used to it very quickly.
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DANMAN
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| posted on 2/3/12 at 01:50 PM |
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That's good to know.
What sort of 0-100km (0-60mph) times are the average fireblade engine Locost getting? The car in question weighs approximately 475kg's and is
making 130Hp-ish.
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PAUL FISHER
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| posted on 2/3/12 at 02:23 PM |
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Around 4.5 seconds to 60mph
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NigeEss
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| posted on 2/3/12 at 06:28 PM |
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quote:
Originally posted by DANMAN
quote:
Originally posted by NigeEss
The very first post in the BEC forum is a sticky to the diff ratio calulator.
Clutchless upshifts get easier the faster you go but unless you have some
sort of trickshifter use the clutch coming back down.
Are the rules different state to state ? My bro in law imported his ST Locoblade
into Perth a couple of years ago and got it approved.wouldn't be the same one
would it ??)
May be the same one. He is in Perth and his name is Ewan. Seems like a nice bloke and is a straight shooter from what I can gather.
Thanks for the info guys. I'm not sure what wheels/tyres it is running, I'll have to check into it.
I'm having a hard time comprehending the idea of changing gear at 12,000rpm, certainly something I'm not used to! How many rpm do you need
to feed these things for normal take off from a stand still? 2000rpm-ish?
It sure is !
He's a top bloke, and I got on so well he was more a brother than an in-law. Off to Perth in July to stay with him and
the family for a month.
Had some great times in that car too, memories of chasing a WRX Impreza who would pull away on the straights above 90
odd only to be reeled in on the bends, superb. It's a very well set up car and I'm sure you won't be disapointed if you get it.
It was running 185/60 13 on RS alloys last time I saw it.
Time is an illusion. Lunchtime doubly so.................Douglas Adams.
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DANMAN
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| posted on 2/3/12 at 10:53 PM |
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quote:
Originally posted by NigeEss
It sure is !
He's a top bloke, and I got on so well he was more a brother than an in-law. Off to Perth in July to stay with him and
the family for a month.
Had some great times in that car too, memories of chasing a WRX Impreza who would pull away on the straights above 90
odd only to be reeled in on the bends, superb. It's a very well set up car and I'm sure you won't be disapointed if you get it.
It was running 185/60 13 on RS alloys last time I saw it.
He does seem like a nice guy. I am keen on getting it but I have to do a bit of work to get it registered in NSW so I'm trying to find out how
much I have to spend on it first before I purchase it. The last one I got engineered in NSW cost me $1500 for a 45 minute conversation with the
engineer! I think I'm in the wrong line of work!
Do you know anything about the chassis? Who made it? Was it professionally built, etc?
The last Locost I bought was 5mm out diagonally in the chassis! I was looking at buying a Westfield or PRB for this reason as I know the chassis will
most likely be spot on but when it comes to Locost chassis' they can be pretty average.
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NigeEss
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| posted on 6/3/12 at 10:38 AM |
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Hi Dan,
Sorry for the late reply.
As far and I know it's a genuine factory built ST chassis, at least that's what it was bought as.
5mm is actually very good. Can't say we ever measured up this one up but the handling indicates
it's pretty spot on.
U2U sent as well.
Nige
Time is an illusion. Lunchtime doubly so.................Douglas Adams.
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DANMAN
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| posted on 7/3/12 at 08:27 AM |
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As long as it handles well I'm happy. Could care less if it was 10mm out, the proof is in the numbers and if it's doing well at sprints
etc I'll be happy.
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