Author Topic: FT 500 modified  (Read 13800 times)

Chronic

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Re: FT 500 modified
« Reply #25 on: April 27, 2015, 12:15:27 AM »
This weekend i attended a Bikeswap, and found a Mikuni Flatslide 37 mm carburator!!!

Itīs one mm to small to fit perfekt, but not a big job to fit it properly...

Anyone who have thoughs about this carburator on the FT?

J6G1Z

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Re: FT 500 modified
« Reply #26 on: April 27, 2015, 04:39:09 AM »
Are you sure that it's not a 38mm?

White Brothers used to offer a 38mm carb kit back in the day. Usually it was installed along with a larger bore & a higher performance camshaft. A 38mm might be a bit large for a stock street Ascot. A 36mm might be a better fit. I have a 38mm Mikuni flat-slide that I've been hanging onto for the future & have considered trying it on my bike. One of the things that will make the fit easier, is a 90 degree elbow at the carb end of the throttle cable. That will allow for more clearance at the top of the carb.

Here are some jetting specs from ThumperStuff for a 38mm Mikuni flat-slide that was mounted on a Yamaha SR-500.
4.0 Slide
190 Main
55 Pilot (That may be rich & could possibly respond better to a 25-30 Pilot)
389P2 Needle Jet
6FJ40 Needle

Good luck & please let us know what you find out.
J.
« Last Edit: April 27, 2015, 10:54:58 AM by J6G1Z »

Chronic

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Re: FT 500 modified
« Reply #27 on: April 27, 2015, 06:30:37 AM »
Well i messured it to 37 mm inside forward pointing outlet ( do i sound like native American ???)

It also have bracket for installing double trottle Cable, like stock on the FT

Chronic

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Re: FT 500 modified
« Reply #28 on: April 27, 2015, 06:32:47 AM »
Hereīs a pic

J6G1Z

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Re: FT 500 modified
« Reply #29 on: April 27, 2015, 07:11:59 AM »
Hmmm... I've never seen one like that before. Does it have an accelerator pump?

J.

triguyracer

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Re: FT 500 modified
« Reply #30 on: April 27, 2015, 08:26:02 AM »
Looks to be a modern dirtbike  flatslide carb,have thought about doing the same to mine.They are somewhat easy to come by for a fair price,as always the fun part comes when trying to figure out the jetting

Lefty

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Re: FT 500 modified
« Reply #31 on: April 27, 2015, 02:12:48 PM »
Those rear signal lights are different, how are they mounted and who makes them?

ex119x

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Re: FT 500 modified
« Reply #32 on: April 27, 2015, 09:37:55 PM »
That looks like a Keihin FCR off a 450 dirtbike. That would be a good choice for the Ascot. It is a little big for a stock motor, but will leave you plenty of carb to build a motor up to.

Chronic

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Re: FT 500 modified
« Reply #33 on: April 28, 2015, 01:03:25 AM »
Those rear signal lights are different, how are they mounted and who makes them?

Mounted just like any turnsignals, but theese have brake/rear light and indicators. Bought them here in Sweden, but have seen them on Ebay with small pricetags.

Chronic

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Re: FT 500 modified
« Reply #34 on: April 28, 2015, 01:04:37 AM »
That looks like a Keihin FCR off a 450 dirtbike. That would be a good choice for the Ascot. It is a little big for a stock motor, but will leave you plenty of carb to build a motor up to.


its a Mikuni Flatslide. 37 mm is smaller than stock carburator, isnīt it?

Chronic

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Re: FT 500 modified
« Reply #35 on: April 28, 2015, 01:06:49 AM »
Hmmm... I've never seen one like that before. Does it have an accelerator pump?

J.

No pump, no extra jets, its very simple. I can not find anything like it on the internet ??? 

J6G1Z

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Re: FT 500 modified
« Reply #36 on: April 28, 2015, 03:59:37 AM »
The original FT Ascot carb is a 35mm with an accelerator pump. It's actually quite a sophisticated carb.

J.

ex119x

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Re: FT 500 modified
« Reply #37 on: April 28, 2015, 08:26:45 PM »
I have not seen that style flat slide Mikuni before, but it looks like it is an oem fitment for something. It looks like a nice piece. The oem Ascot carb is a cv and they generally flow less than a comparably sized slide needle carb of the same slide configuration. For example, the XL500s uses a 32mm round slide carb compared the the 35 CV. I stll think it work fine on a stock motor with a free flowing exhaust. If you ran a mild cam and a 10.5 : 1 piston you would have a real nice package.

Lefty

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Re: FT 500 modified
« Reply #38 on: May 03, 2015, 02:26:35 PM »
I have searched Ebay for those rear signal lights like yours with many different "keyword" configurations and I can not find them. Do you know who the manufacturer is, or could you post up a link? I am really interested in them. Thanks, Lefty

Chronic

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Re: FT 500 modified
« Reply #39 on: May 03, 2015, 11:34:16 PM »
I have searched Ebay for those rear signal lights like yours with many different "keyword" configurations and I can not find them. Do you know who the manufacturer is, or could you post up a link? I am really interested in them. Thanks, Lefty

Earlier this Winter, when a was typing " Indicators rear brake light rear light" i was getting a lot of results, including this ones i have. Now i dont find much at all :-\



Lefty

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Re: FT 500 modified
« Reply #42 on: May 04, 2015, 02:10:05 PM »
Thanks for the link! For 19.99, they're worth a try

Blueb3

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Re: FT 500 modified
« Reply #43 on: January 07, 2016, 05:30:44 AM »
Wow, just dropping the light down the forks like that makes the bike look 1000x better than stock. The bike looks really good overall as well :)