Yamaha made the TZR250 from 1986 to 1996 and is a twin cylinder 2 stroke 250cc motorcycle.Later models had the Yamaha Power Valve System (YPVS) which raises and lowers the exhaust port depending on the rpm of the engine, the YPVS servo starts to open at about 6,000rpm. In standard form 50bhp is claimed at 10,000rpm. They were often raced against the Suzuki RGV250 which was known as having a slight power advantge over the TZR. There is plenty of good info online for the TZR250, try http://tzr250.com/forums Couple of good write ups First compares the 1KT/2MA vs 3MA vs 3XV http://www.green-flight.co.uk/3xv/generation-comparisons.pdf Then this compares the 3XV R versus the SP http://www.green-flight.co.uk/3xv/3xv_r_vs_sp.pdf The TZR250 is a rare bike in Australia and rarely offered for sale, in saying that I tend to see them used as track day bikes instead of on the road. If you can find one in good nick, snap it up as 2 stroke 250cc bike values are increasing. Video of one in action yamaha tzr 250 3ma Cheers Chris
Yamaha TZR250 I will be racing my TZR250 next weekend at the Barry Sheene Festival of Speed at Eastern Creek. We are in garage 39. Stop by and say hello.
Bike went great this weekend - the best road bike I have ever ridden. I now have a list of things that I would like to improve but it is already very close.
The TZR250 is better every time I race it. It was great at the 2013 BSFOS. For next weekend I have some stiffer fork springs and hopefully raise the rear a bit.
Tyre pressures depend on how hot the track is and whether it is a fast or slow track and how soft the tyre compound is. The higher the pressure the cooler the tyre will be. The Bridgestone 125GP slicks should be between 25 and 29 psi set when the tyre is cold.
I realise theres many variables but what do u get out of a tyre? a race or 2? a meeting? more? What kind of cost for a set of slicks that u use?
If I get them too hot then I chew them out quickly. That is why tyre pressure is so important. I look at each tyre every time I come in from the track to see how it is. I would normally get a couple of years out of a front but maybe only one year from a rear. I pay about $300 for a pair.
I guess u expect alot of "expenses" when u go racing , but thats not too bad to get that much life from the tyres ..if used wisely...! Cheers for the info
The ability to be able to race long term is all about managing your expenses. Bikes like the TZR250 and RD250LC help this a lot due to their reliable design. The first stage is to get guaranteed funds. Any sponsorship from anywhere will help here. But the main thing is your ability to negotiate funding with your wife/partner. You need to negotiate a race budget for each year. If you have to ask for money for racing every few weeks then her answer will be no. Have three bank accounts; common to cover household expenses, biils, etc and one for you and one for her. Negotiate how much goes into your individual accounts. You will find that this model works well because she can spend or save for what she wants without having to negotiate with you regularly too. Much happier relationship if not fighting over money. Negotiate what gets paid for by each account so that if you don't spend money then you can use it for racing. I took my car off the road, made my own lunch, stopped buying magazines, minimised alcohol consumption, etc. Don't spend money on the race bikes unless you have to. e.g. only have a pretty paint job if you do it yourself. Try to avoid crash damage: you will crash and so how do you protect it and you from damage? eg. I cable tie part of a rubber mud flap around the brake master cylinder so that it is protected in a crash. You are the slowest thing on the bike and so rather than spending big on bike modifications you are better off getting fit by cycling to work and/or running. There will be some money in your budget for modifications and so use it for what is needed. When you are racing it will be obvious what is a problem and so just fix that. Engine modifications are likely to reduce reliability which increases cost. Best value normally comes from tuning suspension and brakes and making lighter bits yourself. Look after your tyres. Green plastic garbage bags are good for this and keep them cool and dark. Anyway, you get the idea. ps. my motivation for this long spiel was not just your posting. I wanted to give Chris a few tips. Mark
