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 Post subject: RS250 NF5 - - 96hp & 50lbft - too good to be true? Videos.
PostPosted: Wed May 27, 2015 3:08 pm 
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Joined: Fri Aug 19, 2011 5:18 am
Posts: 1600
Location: Houston, Texas.
As if eleventy five bike & car projects are not enough, I figured getting a pair of clean ready to show (and maybe go) GP gems was not such a bad idea. Hopefully these will actually increase in value over time.

1987 TZ250T 2KM
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1988 RS250R NF5
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_________________
TZ500V/OW53 Track bike
YZR500 OW81 Clone
OW69 Daytona 200 Replica - 784cc Monster
NS400 Track Bike
RS250R NF5
TZ250T 2KM
TZ250B 3YL
TZR250 3MA Track Bike
427ci C5 Z07


Last edited by RC45 on Wed Mar 08, 2017 12:23 am, edited 5 times in total.

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 Post subject: Re: Privateer GP 250 twins on the Water.
PostPosted: Fri May 29, 2015 12:55 am 
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Did you buy them? Do they run? And will you ride them? Just bought an FZR 400 and going to sell my Bandit. I have told myself enough is enough to keep all running, licensed, and insured.


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 Post subject: Re: Privateer GP 250 twins on the Water.
PostPosted: Fri May 29, 2015 3:32 am 
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Yep - bought em. They should be here in a couple months. They may run right out the box, but I should imagine after having been static displays for many years they need to be given a mechanical once over.

I would like to have the RS250 in good thrashable condition and the TZ just for the occasional parade lap.

These 'build from scratch' bikes are exhausting, it would be nice to have some complete very presentable bikes on hand.

I am also on the look out for a pukka 500 GP bike. Probably end up getting a real RS500 or XR35/40 RG500 at some point. In the end it will probably cost about the same as the cost of a decent replica.

_________________
TZ500V/OW53 Track bike
YZR500 OW81 Clone
OW69 Daytona 200 Replica - 784cc Monster
NS400 Track Bike
RS250R NF5
TZ250T 2KM
TZ250B 3YL
TZR250 3MA Track Bike
427ci C5 Z07


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 Post subject: Re: Privateer GP 250 twins on the Water.
PostPosted: Fri May 29, 2015 7:22 am 
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Joined: Tue Aug 14, 2007 2:14 pm
Posts: 232
Location: France - Nantes
They look splendid :smt007 .


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 Post subject: Re: Privateer GP 250 twins on the Water.
PostPosted: Sun Mar 20, 2016 2:10 pm 
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Joined: Fri Aug 19, 2011 5:18 am
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The bikes have been here for a while now.

The TZ is waiting on a couple consumables and a 17" rear wheel.
It is like a time capsule. Someone pulled into the pits in 1988 after a club race, wiped the bike down, drained the fluids and parked it inside for the next 25 years.

With everything being so original I might do a photo essay for anyone who wants to restore a 2KM to original state.

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The RS has been given a cosmetic once over and even brought to life.

A couple before, during and after painting pics. The 17" HRC wheel is installed and makes tyre choice a lot easier.

And Its ALIVE!!! Video ---> https://youtu.be/FXjXvkxVul0

Before
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[During
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After
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_________________
TZ500V/OW53 Track bike
YZR500 OW81 Clone
OW69 Daytona 200 Replica - 784cc Monster
NS400 Track Bike
RS250R NF5
TZ250T 2KM
TZ250B 3YL
TZR250 3MA Track Bike
427ci C5 Z07


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 Post subject: Re: Privateer GP 250 twins here - Video!!
PostPosted: Wed Mar 23, 2016 10:10 am 
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Joined: Fri Aug 19, 2011 5:18 am
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Location: Houston, Texas.
All dressed up with the new decals, fresh off an 8psi leak down test and ready to go :)

Just waiting on new tires and brake pads.

Image

_________________
TZ500V/OW53 Track bike
YZR500 OW81 Clone
OW69 Daytona 200 Replica - 784cc Monster
NS400 Track Bike
RS250R NF5
TZ250T 2KM
TZ250B 3YL
TZR250 3MA Track Bike
427ci C5 Z07


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 Post subject: Re: RS250 - New video & photos.
PostPosted: Sat Mar 26, 2016 3:21 am 
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Location: Houston, Texas.
New startup & warm-up video.

https://youtu.be/thn7bMEGZqY

Took the chance to take some photos with the DSLR.

The Van
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The Bike
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_________________
TZ500V/OW53 Track bike
YZR500 OW81 Clone
OW69 Daytona 200 Replica - 784cc Monster
NS400 Track Bike
RS250R NF5
TZ250T 2KM
TZ250B 3YL
TZR250 3MA Track Bike
427ci C5 Z07


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 Post subject: Re: RS250 - New video & photos.
PostPosted: Sat Mar 26, 2016 2:20 pm 
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Joined: Fri May 09, 2008 8:56 pm
Posts: 1681
Location: Houston, Texas
Are you OK. A bike that runs. Kidding. I like it. Good finds. Get the tires and see you at track. MSR next weekend.


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 Post subject: Re: RS250 - New video & photos.
PostPosted: Sun Apr 03, 2016 4:11 pm 
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Went out to the country to try some straight line runs to do a couple plug chops.

Decided to try various video setups as well.

1st up, a push start video from an unusual perspective - 360* panorama :)
https://www.youtube.com/watch?v=RnYixnW577U

Next up - an onboard 360* plug chop run. Fadng light, bumpy country road, 10 year old slicks, close ratio road race transmission and small sprocket make for chasing "5 to 10s at full throttle" an interesting experiemnt.
https://www.youtube.com/watch?v=IZ1xWEgH0NA

This one is a road side view of the outbound run for the 1st plug chop
https://youtu.be/KdQkBPhClNw

Same as above, just onboard looking back through the haze of 2 smoke :)
https://youtu.be/6qeykEweavA

Our road side pits and the volunteer pit crew :)
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The Plugs - very hard to tell - down in the plug the porcelain is coated in a coffee color, but the rest seem swashed off. I am not looking for ultimate power, just reliable not lean setup.
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_________________
TZ500V/OW53 Track bike
YZR500 OW81 Clone
OW69 Daytona 200 Replica - 784cc Monster
NS400 Track Bike
RS250R NF5
TZ250T 2KM
TZ250B 3YL
TZR250 3MA Track Bike
427ci C5 Z07


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 Post subject: Re: RS250 - Onboard 360* Panorama video & photos.
PostPosted: Wed Mar 08, 2017 12:20 am 
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Joined: Fri Aug 19, 2011 5:18 am
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Location: Houston, Texas.
Finally got around to doing some controlled plug chops and AFR checks on the dyno.

Picked up the bike form the local Honda dealership where it is on display...
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Took the bike for the dyno runs down to a local bloke that builds and tune some crazy Banshees and other 4 wheelers
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Warm-up video..


The Dyno Run video

_________________
TZ500V/OW53 Track bike
YZR500 OW81 Clone
OW69 Daytona 200 Replica - 784cc Monster
NS400 Track Bike
RS250R NF5
TZ250T 2KM
TZ250B 3YL
TZR250 3MA Track Bike
427ci C5 Z07


Last edited by RC45 on Thu Mar 16, 2017 10:03 pm, edited 1 time in total.

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 Post subject: Re: RS250 - Onboard 360* Panorama video & photos.
PostPosted: Wed Mar 08, 2017 12:21 am 
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Joined: Fri Aug 19, 2011 5:18 am
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The pistons - a little washed out byt he flash.

Lower cylinder
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Upper cylinder
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_________________
TZ500V/OW53 Track bike
YZR500 OW81 Clone
OW69 Daytona 200 Replica - 784cc Monster
NS400 Track Bike
RS250R NF5
TZ250T 2KM
TZ250B 3YL
TZR250 3MA Track Bike
427ci C5 Z07


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 Post subject: Re: RS250 - Onboard 360* Panorama video & photos.
PostPosted: Wed Mar 08, 2017 12:21 am 
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Joined: Fri Aug 19, 2011 5:18 am
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Location: Houston, Texas.
Well, it was another afternoon on the dyno.

Dyno Run 2


Dyno Run 3



The bike again posted some amazing results, different conditions to Saturday but very similar results.

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49ftlb and 95hp & 50ftlb and 96hp. This appears to be one very healthy RS250. ALmost too healthy :oops: And without getting too caught up in the numbers I was again really interested in the jetting and health of the bike during the runs.

AFR numbers showed the bike to be running on the safe side at WOT and below 7,000, with a bit of a leaner patch from about 7500 to 8500 rpm. Leanest was 17:1.

But once the revs picked up it starts to richen up again and pulls as far as the throttle jockey is willing to go. We did one run almost to 12,000 but the rest we dint go past 11,000. Did not seem to the be a need for it.

Now I guess all that is left is to go ride the damn thing :)

_________________
TZ500V/OW53 Track bike
YZR500 OW81 Clone
OW69 Daytona 200 Replica - 784cc Monster
NS400 Track Bike
RS250R NF5
TZ250T 2KM
TZ250B 3YL
TZR250 3MA Track Bike
427ci C5 Z07


Last edited by RC45 on Thu Mar 16, 2017 10:02 pm, edited 2 times in total.

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 Post subject: Re: RS250 - Onboard 360* Panorama video & photos.
PostPosted: Wed Mar 08, 2017 12:27 am 
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RC45 wrote:
Now I guess all that is left is to go ride the damn thing :)


With those numbers you should bring a parachute :mrgreen:

_________________
1985 RZ500 1GE Spec
1985 RZ500 47X Spec Project Bike
1986 RG500 ATR
1986 NS400R
1987 TZR250
1988 Honda RC31
2007 DL650 VStrom
2014 Triumph Thruxton Modified


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 Post subject: Re: RS250 NF5 - - 96hp & 50lbft - too good to be true? Video
PostPosted: Wed Mar 08, 2017 1:27 am 
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Joined: Fri May 09, 2008 8:56 pm
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Put it on the track. Missing another COTA event.


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 Post subject: Re: RS250 NF5 - - 96hp & 50lbft - too good to be true? Video
PostPosted: Wed Mar 08, 2017 1:49 am 
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Joined: Fri Aug 19, 2011 5:18 am
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Location: Houston, Texas.
Yep, now that all the t's are crossed and i's dotted the bike is ready to use. I will look into a day in the near future. I would have probably foregone this next COTA day as I have zero interest in rain riding.

I spent lots of years commuting in the rain on a motorcycle back home - I am a great rain rider I just detest the rain itself so much there will be no fun to be had, for me at least.

_________________
TZ500V/OW53 Track bike
YZR500 OW81 Clone
OW69 Daytona 200 Replica - 784cc Monster
NS400 Track Bike
RS250R NF5
TZ250T 2KM
TZ250B 3YL
TZR250 3MA Track Bike
427ci C5 Z07


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