Flatslides

Post by **rcv4** » Tue Jul 11, 2017 3:44 pm

Has anyone tried a set of FCR flatslided on a nc30?

Post by **Drunkn Munky** » Tue Jul 11, 2017 5:19 pm

I know of a few that have tried, and know of just as many that gave up on them.

Post by **Neosophist** » Tue Jul 11, 2017 6:53 pm

Yes, quite a few on here have..

I think Mike Norman has dabbled with them amongst some of the European owners..

http://www.jb-power.co.jp/info/?p=1717

JB power have started selling an FCR kit that is not cheap at all... few thousand gbp... but aparantly it works well.

FCRs can be a pain in the arse to set up.

Post by **rcv4** » Tue Jul 11, 2017 7:42 pm

Ok thanks just looking at a few options,wots the problem with setup?

Post by **lukemillar** » Tue Jul 11, 2017 10:01 pm

I bought Mike Norman's set when he started looking at FI. They are a lovely piece of kit but I couldn't get them to work as well as my HRC spec CV carbs. Admittedly the engine I now have is very different to the one they were originally set up for but at the time, I couldn't get the spec needle I needed off the shelf to fully dial them in. I tried the 2 closest needles but the both compromised different areas of the fuelling. To get the needles requires meant getting them manufactured (min 20 needles) at a cost of ~$1000! I decided just to stick with the CV's at that point, sell the flat slides and liberating some money from my heavily invested race bike!

Post by **rcv4** » Tue Jul 11, 2017 10:35 pm

Thanks im looking into it further.

saltysealion · Post by **saltysealion** » Wed Jul 12, 2017 6:41 am

Neosophist wrote:Yes, quite a few on here have..

I think Mike Norman has dabbled with them amongst some of the European owners..

http://www.jb-power.co.jp/info/?p=1717

JB power have started selling an FCR kit that is not cheap at all... few thousand gbp... but aparantly it works well.

FCRs can be a pain in the arse to set up.

I've been drooling over those JB FCR flat sides for awhile now but wanted to hear about experiences with them before dropping big coin :)

Any details on those who have it working well Neo?

Post by **Drunkn Munky** » Wed Jul 12, 2017 9:29 am

lukemillar wrote:I bought Mike Norman's set when he started looking at FI. They are a lovely piece of kit but I couldn't get them to work as well as my HRC spec CV carbs. Admittedly the engine I now have is very different to the one they were originally set up for but at the time, I couldn't get the spec needle I needed off the shelf to fully dial them in. I tried the 2 closest needles but the both compromised different areas of the fuelling. To get the needles requires meant getting them manufactured (min 20 needles) at a cost of ~$1000! I decided just to stick with the CV's at that point, sell the flat slides and liberating some money from my heavily invested race bike!

Is this the set that Yakama (Liam) has now?

Yakama · Post by **Yakama** » Wed Jul 12, 2017 8:09 pm

Post by **lukemillar** » Sat Jul 15, 2017 9:20 am

I'd be interested in how much you can find out as I haven't seen much info on them at all. To be completely honest, I wish I still had mine and tune them with my current engine build but I needed the cash so they had to go. This is the dyno chart from the tuning session:

Worth noting that this was on a stock NC30 engine with an airbox (custom base and modified NC35 HRC Tyga lid). The runs are bike as delivered and where Chris got to. The big dip in the middle was the bit we couldn't solve because of the needles. These flat slides are also 32mm (the JB's are 33mm) and the velocity stacks were much shorter on mine than those pictured in the JB picture.

I am happy to share all the info I have as well as pics if you want.

Thanks
Luke

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