OzVMX Forum

Clubroom => Tech Talk => Topic started by: melx on August 31, 2014, 09:33:32 pm

Title: 1975 YZ250B Spocket cover
Post by: melx on August 31, 2014, 09:33:32 pm

I am rebuilding a 75 YZ250B to race and it is close to completion, a harder project than I thought as parts are getting hard to find, I am still looking for a standard size piston but that is not stopping me yet, my problem is the bike has the original sprocket cover or minimal cover if you like but the Regs state I must cover the sprocket? Not use the original setup that everyone actually raced at the time?  Unless I fix that I cant race it? What do people use? does DT2MX cover fit onto the bike? All help appreciated.

Title: Re: 1975 YZ250B Spocket cover
Post by: tony27 on August 31, 2014, 09:35:15 pm

Contact Davey Crocket (John Tate) on here, makes a very nice billet 1 that has the legal sprocket covering

Title: Re: 1975 YZ250B Spocket cover
Post by: davidmc on August 31, 2014, 09:44:33 pm

There were 2 types available, one covers the sprocket,
I have 1 of each in stock.

Title: Re: 1975 YZ250B Spocket cover
Post by: Rossvickicampbell on September 01, 2014, 08:51:13 am

MelX - I agree with Tony - the one DC has is expensive but really good and also helps lighten the clutch feel.

Having troubles finding aprts - have you tried Yamatopdog or NWVCP?

Title: Re: 1975 YZ250B Spocket cover
Post by: OverTheHill on September 01, 2014, 09:06:34 am

If your talking YZB [which it sounds like] & not MX250B 1975 [had one new] then any clutch lifting sprocket cover from "68 DT1 to "73 DT3/RT3 would [should] fit, just a matter of finding one. Haven't trawled ebay for a while but everything seems to be getting more expensive. Even stumbled on an aftermarket rear sprocket for a DT1mx for $360+ dollars gosh & even showed a number had sold--yeah rite. Sorry if i missed the point without going back, but if you have a broken cover with good lifter can you extend it back to cover the area. Cheers.

Title: Re: 1975 YZ250B Spocket cover
Post by: TT5 Matt on September 01, 2014, 01:50:40 pm

theres a rt1 motor with stuffed cases at the wrecker here which might have the cover your after,let me know if you cant find one and ill check it out

Title: Re: 1975 YZ250B Spocket cover
Post by: Iain Cameron on September 01, 2014, 06:59:45 pm

Any DT from 68 to 73 standard cover will fit or RT to 73 . I have one of JT's covers they are the best .

Title: Re: 1975 YZ250B Spocket cover
Post by: OverTheHill on September 02, 2014, 10:51:23 am

loosing the plot, thought i'd posted this so will do it again just incase. Only that there's a YZ360B on trademe for 9 grand--yellow one.  Original clutch lifter so not legal in oz without adding to.

Title: Re: 1975 YZ250B Spocket cover
Post by: melx on September 05, 2014, 01:49:48 pm

Thanks everyone, that helps me understand it all