OzVMX Forum

Clubroom => Bike Talk => Topic started by: asasin on March 23, 2009, 02:51:12 pm

Title: ATK,S
Post by: asasin on March 23, 2009, 02:51:12 pm: I have just gained possession of a 560 ATK , anyone else running one of these American beauties?If so any hassles or set up info would be appreciated . It seems really good as is ,but what falls off ( except me) etc
Cheers
Title: Re: ATK,S
Post by: Marc.com on March 23, 2009, 07:33:56 pm: lucky you, pretty cool bike, single sided frame, talons, rotax motor, WP suspension, if memory serves me correct.
Title: Re: ATK,S
Post by: asasin on March 23, 2009, 08:00:37 pm: Im actually impressed with its starting from cold.slowly kick it over until little white mark appears and jump on it! 1 kick and she bursts into life.I know some modern button starts that arnt that good
Title: Re: ATK,S
Post by: Marc.com on March 23, 2009, 08:22:17 pm: I think they are cool thing and spares come straight from your BMW dealer. I think I saw that bike advertised/ now all you need is the Stars and Stripes decal set and you have one of the best dirtbikes the yanks ever produced. I liked ATKs, I rode a 406 for a bit, flat as a tack power and 4 sprockets where 2 would normally do the job.
Title: Re: ATK,S
Post by: holeshot buddy on March 23, 2009, 09:17:10 pm: they are a great bike i used to race
a 1996 atk 605
cool bike c&j frame,white power suspension,
excels, talon hubs. billet triples brake pedal etc,
taper bars, magura levers, nissan calipers,
rotax engine roller rockers and cam,
external cam belt, cool engine,
very powerful for its time
wish i still had mine
i remember a set of rings cost $280.00
parts still availiable
bert flood motorcycles lilydale victoria ph 0397355655

cheers rusty
Title: Re: ATK,S
Post by: Tim754 on March 23, 2009, 10:13:38 pm: Sad to have to say former ATK distributor Bert Flood passed away a couple of weeks ago, A great rider and superior tuner in his own right and father of champion racers Gary and Trevor Flood.
Title: Re: ATK,S
Post by: Husky500evo on March 24, 2009, 08:39:34 am: (http://img.villagephotos.com/p/2007-4/1252864/ebay%20010.jpg)
I just fitted a set of new MXM (universal ATK)tank decals to mine. Would have prefered them to have "Made in the USA" where the "Patriot" bit is, but they are otherwise a good quality vented tank decal . My bike has been modified to have the rear disc brake on the back wheel . The FIM banned the countershaft mounted rear disc brake set-up for racing , because if the chain derails or breaks going down a steep hill , you have no rear brake (who needs brakes anyway, they only slow you down :D). The countershaft mounted disc spins about 3 times faster than a rear wheel mounted one , & is supposed to get really hot & wear out pads rapidly, as well . Mine is an '89 605 electric start model & I hope to race it sometime in QVMX's pre '90 class .
Title: Re: ATK,S
Post by: asasin on March 24, 2009, 09:15:36 am: Very nice Husky.I rode mine for a few laps and boiled the rear brake fluid.I have looked into it and the line was touching the exhust ,moved it away and put new fluid in seems ok now .Mine is a 85 560.looks like they havent changed them much from the photo
Title: Re: ATK,S
Post by: evo550 on March 24, 2009, 07:13:36 pm: Assasin,
When do we get some pics ??? ???
Title: Re: ATK,S
Post by: Ian P on March 24, 2009, 07:50:09 pm: When his hands stop shaking ;D
Title: Re: ATK,S
Post by: crash n bern on March 31, 2009, 12:29:18 pm: Nothing falls off them. If anything check the cam drive belt as they can snap if they're old. Mine always start first kick every time. Just run it through to top dead center, pull in the decomp push it just past and then bring the lever back up and kick. The Rotax motors are over engineered and if you ever pull it down you will be impressed with the internal build of them. The only other thing is keep your valve clearance a couple of thou larger than the book recommends. I don't have the specs on me at the moment. The exhaust valve can stick on them if they sit for a while. Engine parts are very expensive, but most of the old 4 strokes are getting expensive to rebuild anyway.

http://www.atkmotorsports.com/atkbb/ is the forum link for everything you need to know.
Title: Re: ATK,S
Post by: asasin on March 31, 2009, 01:25:16 pm: Thanks Crash :)I was impressed with its starting too 1 kick from cold!! I am going to race it this weekend at our VMX champs final ;D
Title: Re: ATK,S
Post by: Marc.com on March 31, 2009, 05:10:57 pm: Quote from: asasin on March 31, 2009, 01:25:16 pm
Thanks Crash :)I was impressed with its starting too 1 kick from cold!! I am going to race it this weekend at our VMX champs final ;D

freaking cool bike, sing out if you get short of cash ;D
Title: Re: ATK,S
Post by: Marc.com on April 13, 2009, 06:28:52 pm: so do we get a ride impression, is it a real trench digger.
Title: Re: ATK,S
Post by: asasin on April 13, 2009, 08:42:46 pm: Really smooth , ran out of brakes (rear ) in 3 laps,I think that the idle was up too high ie no engine brakeing.fell of my 125 and parked the ATK (sore ribs made it hard to hang onto),Handles really well not like a BIG bike at all.
Title: Re: ATK,S
Post by: Marc.com on April 14, 2009, 06:41:14 pm: sounds good to me, apart from the ribs , I have ridden the 250 and the 406 2 strokes back in the day, acquired taste.