Author Topic: FT 500 modified (Read 91183 times)

Chronic · « **Reply #25 on:** April 27, 2015, 03:15:27 am »

This weekend i attended a Bikeswap, and found a Mikuni Flatslide 37 mm carburator!!!

It´s 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 · « **Reply #26 on:** April 27, 2015, 07:39:09 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.

Chronic · « **Reply #27 on:** April 27, 2015, 09:30:37 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 · « **Reply #28 on:** April 27, 2015, 09:32:47 am »

Here´s a pic

J6G1Z · « **Reply #29 on:** April 27, 2015, 10:11:59 am »

Hmmm... I've never seen one like that before. Does it have an accelerator pump?

J.

triguyracer · « **Reply #30 on:** April 27, 2015, 11:26:02 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 · « **Reply #31 on:** April 27, 2015, 05:12:48 pm »

Those rear signal lights are different, how are they mounted and who makes them?

ex119x · « **Reply #32 on:** April 28, 2015, 12:37:55 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.

Chronic · « **Reply #33 on:** April 28, 2015, 04:03:25 am »

Quote from: Lefty on April 27, 2015, 05:12:48 pm

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 · « **Reply #34 on:** April 28, 2015, 04:04:37 am »

Quote from: ex119x on April 28, 2015, 12:37:55 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, isn´t it?

Chronic · « **Reply #35 on:** April 28, 2015, 04:06:49 am »

Quote from: J6G1Z on April 27, 2015, 10:11:59 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 · « **Reply #36 on:** April 28, 2015, 06:59:37 am »

The original FT Ascot carb is a 35mm with an accelerator pump. It's actually quite a sophisticated carb.

J.

ex119x · « **Reply #37 on:** April 28, 2015, 11:26:45 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 · « **Reply #38 on:** May 03, 2015, 05:26:35 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 · « **Reply #39 on:** May 04, 2015, 02:34:16 am »

Quote from: Lefty on May 03, 2015, 05:26:35 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

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 $:-\$

Chronic · « **Reply #40 on:** May 04, 2015, 04:25:42 am »

http://www.ebay.com/itm/2Pairs-LED-Running-Brake-Tail-Turn-Signal-Lights-Indicator-For-Yamaha-Motorcycle-/391041239497?hash=item5b0bdfc9c9&vxp=mtr

Chronic · « **Reply #41 on:** May 04, 2015, 04:26:27 am »

http://www.ebay.com/itm/2Pcs12LED-Black-Motorcycle-Brake-Running-Turn-Signal-Indicators-Red-Amber-Light-/281381303588?hash=item4183a1f524&vxp=mtr

Lefty · « **Reply #42 on:** May 04, 2015, 05:10:05 pm »

Thanks for the link! For 19.99, they're worth a try

Blueb3 · « **Reply #43 on:** January 07, 2016, 08:30:44 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

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Author Topic: FT 500 modified (Read 91183 times)