For the 2 stroke fans

[bex]

Follow up to The Unrideables documentary.

Grand Prix 500: The Rainey Days - tonight ITV4 @ 9pm

http://youtu.be/Pl95XAJ54aA

[Mark Taylor]

WooHoo, thanks for the heads-up, love to see the 2-stroke era, reminds me of my youth, back in the day, blah, blah, blah, etc.:thumbsup:

[Black Bob]

Nice one!

Ect.

(That 10 characters yet?)

[Albie]

Nice one!

Ect.

(That 10 characters yet?)

I thought it was etc.....

[Rally]

Cheers Bex, a good heads up there. I love the new avatar trouble! :D

[bex]

Summarises my relationship with the baby 'unrideables'

[utopia]

Highlights from BSB round one at Brands last weekend are also on the same channel in the hour preceding this. :)

[Nickj]

Summarises my relationship with the baby 'unrideables'

The big ones were as rideable as the small ones, that is not for too long.
I had some TZR 250's, a jap import road one that had some substantial engine work and a real detuned one that just scraped a daytime MOT. Both were good till they weren't either trying to throw you into the nearest convenient hedge/ditch or desciding the pistons were actually made of congealed cream cheese.
Awesone fun though :mand:

[bex]

Ah yes, a borrowed racing TZR250 projected me out of clearways @ brands recently.

I think I'll buy one.

[Black Bob]

Just watched it.

Great program - those things were animals... and when exactly did they invent run-off on race tracks ?

[Nickj]

Ah yes, a borrowed racing TZR250 projected me out of clearways @ brands recently.

I think I'll buy one.

If you take a full on TZR you don't need to do too much to make it regularly fail.
The 2MA I had (the 3MA reverse cylinders motors are too fragile and the V's can make awesome power but theres too few) had something like this done
A general engine porting, Stan Stephens (sadly now just renovating) did this to a track stage 3 but Try Becketts work was good too, the ports just went out from big to kin big from 3 to 5mm wider all round with nocer radiusing.
The head was reshaped so there was an angled bevel into the normally flat edged centre domed chamber. Put the capacity up a little but made way more power.
Crank had 250L TZR conrods and crank with standard for the model wiseco's. Initially used the standard ignition and mag but it didn't work too well so a race mag went on (250L again) once the crank end was retapered to fit. So also a big battery to run the lights, going out at night was a point to point dash to get there and back while you could see!! I used to keep a charger at work!
Gearbox tossed for a closer ratio cluster, this was a part of a standard race pack Yam made for the road TZR that came from japan, was a pain to source that part.
Much heavier clutch springs
Carbs were fairly standard other than tossing the backplate, drilling out the previously blocked airway to something like 2-3mm, a bigger main (260-280) spray bar and needle did the biz after a bit of experimenting. OK took ages to get the carbs right :hissy:
Suspension revavle to try and keep everything on the deck pointing the same direction.

Never got it dyno'd that was a rarity back then but it wasn't short of ponies, the powerband kick in was a bit brutal and a sod to sell as it scared the crap out of people stupid enough to sign up for a test ride.

[Dirty]

Slightly rarer and more expensive way to crash a 2 stroke here :) http://www.ebay.co.uk/itm/BIMOTA-V-DUE-TROFERO-/171309416173?pt=UK_Motorcycles&hash=item27e2d63eed

[Capo]

My brother is a two stroke man, based down under he has won a number of championships

His current stable, 2 each 125's and 250's all factory kitted

http://i295.photobucket.com/albums/mm143/Tarugo996/bobsbikes_zps250291fc.jpg (http://s295.photobucket.com/user/Tarugo996/media/bobsbikes_zps250291fc.jpg.html)

[bex]

Nice Capo :thumbsup:

[pompone]

Nice stable to have Capo :)