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Old 11-26-2014, 12:52 PM   #1
V4Rider65 OP
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Joined: Jul 2014
Oddometer: 6
IT250 as a dual sport Bike.

I've been in the process of restoring a 1983 Yamaha IT250K. Its been on going for 3 yrs now. My goal was to build it for Vintage racing. But at my age I really don't think I want to race.
While searching through Rocky Mountain ATV I discovered a DS Light kit that runs off a rechargeable battery. That got me thinking What if I installed that light kit, and changed out the front forks for a set with disc brakes The I could do light duty trail riding and some Dual Sport rides. I could keep the original front end and remove the light kit if I decided to sell it as a Vintage race bike.
What do you guys think?
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2005 Yamaha Royal Star Venture
1984 Honda VF700S "Sabre'
1983 Honda VF750S "Sabre"
1983 Yamaha IT250K (Restored)
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Old 11-26-2014, 03:48 PM   #2
Mr. Carts
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Do not bother with a small battery powered light.

Have Ricky Stator send you a Lighting coil.

Then you can put a H4 on it and actually see at night.

I run a PIAA Super White bulb on mine.


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Old 11-26-2014, 08:29 PM   #3
dhallilama
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rewound my own stator and put a 12V regulator on it... cost about $20 and runs a 55w light just fine.



'99 up YZ forks fit easily... just press out the IT stem and press into the YZ trees... boom, brakes that WORK! the fork valving is a bit rough, though.

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Old Yesterday, 03:55 PM   #4
V4Rider65 OP
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Front forks

Thanks for the advise guys! I was thinking of installing 1985 - 1989 YZ front forks. I think they are the same size as the IT.
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Formerly Solorider40. Not riding solo anymore so I changed my user name
2005 Yamaha Royal Star Venture
1984 Honda VF700S "Sabre'
1983 Honda VF750S "Sabre"
1983 Yamaha IT250K (Restored)
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Old Yesterday, 05:42 PM   #5
G54B
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They are, but unless you use disc brake 43mm triples ('85-on TT, IT200S, '85-'89 disc YZ) as well, or muck around making custom spacers, you'll run into fork spacing issues.
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Old Today, 05:37 AM   #6
V4Rider65 OP
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Quote:
Originally Posted by G54B View Post
They are, but unless you use disc brake 43mm triples ('85-on TT, IT200S, '85-'89 disc YZ) as well, or muck around making custom spacers, you'll run into fork spacing issues.
I was wondering about that. Thanks for the insight. I was hoping to not swap out triple trees, but if I need to to make a better DS bike I will.

I came acrossed a full front end for a YZ125 at a local bike shop. He priced them reasonable, so I think I'll pick them up. Comes with triples, front wheel and caliper. I will just need to rebuild them.

As for electrics, I still think I'll go with Tusk system, but update the battery to a lithium for better reliability and power. I want to keep the headlight stock, but add a couple LED fog lights to each side of the headlight.

One other idea I have is installing a Roto Pax fuel can on the bike somewhere to haul an extra gallon of fuel. I thought about putting in on the right number plate side panel(since its so flat) with a aluminium bracket behind the panel for support.
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Formerly Solorider40. Not riding solo anymore so I changed my user name
2005 Yamaha Royal Star Venture
1984 Honda VF700S "Sabre'
1983 Honda VF750S "Sabre"
1983 Yamaha IT250K (Restored)
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Old Today, 07:44 AM   #7
anotherguy
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Ricky Stator makes an 85 watt lighting coil for my YZ465. With the regulator will that charge a small battery?
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Old Today, 09:10 AM   #8
Mr. Carts
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I have a 10ah battery in my fender pack.

I am going to replace it with a 4 cell Lithium to save weight.

This is the one I am using to charge the battery.
http://www.rickystator.com/catalog/r...lay-p-637.html

Not sure why you would need to change to a battery power light as the IT's came with a lighting coil to power the stock headlight.

More IT info:

http://www.simnet.is/skulitho/sc_english/index.html

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Old Today, 09:56 AM   #9
upnorthhillrod
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The It is a great dual sport if you have a high tolerance for bull spit. It literally can do everything. I bought my 400 as a good runner for 250 bucks in January. I proceded to blow it up on the lake and then went 3 sizes over on the bore to make it a 405.

at the same time I acquired an xt 550 frame and title. I cut the vin off the neck and welded it over the it's serial number to deal with registration. I added a old honda tail light and brake light and road the piss out of it all summer.

pros
110mph on gps (plus 2 on the front sprocket mild porting and jetted right)
wheelies wheelie wheeeelllies all the way to 4th!
claw hammer reliable
litteraly does everything from interstate to racing hare scrambles
super easy to rebuild. 5 tools to take it from rideable to top end torn down to ridable again.
smokes husky 310s, drzs, xr 650s, and even some smaller displacement cruisers



cons
10mpg plus adding oil
constantly tightening everything
terrible lighting
FUEL SENSITIVE, ethanol forget it, 93 ok, 93 mixed with 110 is what it really needs and I'm guessing the 250 would be the same.
terrible vibrations
chewed up lots of tires
they hate summer heaT
also the chain and sprockets go quick riding on the road as there is no cush drive.
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Old Today, 10:49 AM   #10
dhallilama
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Quote:
Originally Posted by upnorthhillrod View Post

cons
10mpg plus adding oil
constantly tightening everything
terrible lighting
FUEL SENSITIVE, ethanol forget it, 93 ok, 93 mixed with 110 is what it really needs and I'm guessing the 250 would be the same.
terrible vibrations
chewed up lots of tires
they hate summer heaT
also the chain and sprockets go quick riding on the road as there is no cush drive.

my '77 250:

averaged 46mpg over the course of 3 months commuting (all around town, no interstate, a few fire roads). otherwise if i'm wringing its neck, the mileage drops but nowhere near 10. it's also got nowhere near the torque of a big bore :)

only have to constantly tighten the stuff that didn't fall off

rewound stator & a 12vac regulator fixed the terrible lighting. rewound stock stator will drive a 55w halogen just fine at idle.

i've run 91 with ethanol, no issues.

yeah. the vibration. not horrid, but not great either.

running trials tires with great luck... also it's not a big bore.

doesn't get hot enough here to notice.

lack of cush drive: i had an aluminum rear sprocket last a month on the street. steel is doing a lot better.
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Old Today, 10:51 AM   #11
anotherguy
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Quote:
Originally Posted by Mr. Carts View Post

Not sure why you would need to change to a battery power light as the IT's came with a lighting coil to power the stock headlight.
I had a magneto Sportster that ran off the generator and at low engine speeds the lights were very dim. Made me leery of riding it in the dark.

I want to plate my YZ and if it has plates it'll get ridden on pavement occasionally. I'd like the lights to remain bright as possible regardless of whether I stall it or engine speed for safety sake. A small lithium battery between the fork tubes at the triple would give me peace of mind.
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