OzVMX Forum
Marque Remarks => Yamaha => Topic started by: YZ250H on January 30, 2010, 12:39:30 pm
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Hi guys,
At the final stages of getting this 250H together (getting it going). Struck trouble with the throttle cable. The one provided with the throttle does not fit onto the top of the carb. The standard one is not long enough to fit into the throttle section. >:( I have to come clean and admit that the throttle is not genuine GG - is Taiwanese copy. Maybe I should dice it and go for the real Gunner Gasser or go back to NOS stock (hard to find). Is there still the same issues with the cables ? In the mean time I will look at what the last guy did on the 465.
Any help help or advice much appreciated.
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You might have to shorten the cable outer of the standard cable to make the inner longer. ;)
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Yeah,
I'll mount it up and see if it is long enough. The carb is on the kitchen bench at the moment. Have moved house and can't find the clamps >:( >:(
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I'm running a Domino quick action throttles on my YZ 465 and RM 400. I am using a universal throttle cable, it comes in a kit form where you cut the outer and inner to length and then solder the nipple on. I have had one on my RM 400 for over six years with out a problem.
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YZ250H, careful with those imitation GG's as i remember a thread some time back where it was highlighted that a few of those were found to jam WFO . be cautious and piss it off.
I think Firko may have had a similar experience. not worth the risk.
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Hoony's right, I fitted one that had a real suspect action, the lug for the cable on the tube used to catch on the cap as you backed the throttle off, dumped it real quick.
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Yes i remember a few people had this problem. maybe it was your post Evo !
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Ask Ted about that one, as I recall he had a near death experience with a dodgey gunner gasser copy.
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Rocketfrog...Unfortunately it wasn`t a copy but the real thing.
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I bought a Magura 314 and had to frig around with a combination of different adjusters on the top of the carb to get the NOS cable to fit. The throttle itself has zero adjustment.
Don't know if this is the same prob you've got, if you can buy a decent throttle, but the cable won't fit, maybe the universal cable kit is the best option.
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Yeah Paul,
That's what seems to have been done to the 465. If the standard cable is long enough I will just shorten the outer and change the throttle end. I will start saving for a real one. Hopefully all goes well.
Thanks for the help guys - much appreciated. Another step closer to completion 8) 8)
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Hey Tony i use the stock yamaha throttles and cables from the dealer .YZ250J,K ,IT200,250K all fit and you never have to fart around with cables . and you can buy all separate parts . hilly
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Thanks mate - do they have the clear plate on top etc. The throttle on the 125J looks like the H model. I haven't seen one on ebay from memory, so I assumed they were NLA. Are they side pull ?
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Send your bikes down to me Tony with a rather large cheque and i will finally get them finished for ya....hahaha
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That's half the problem. I'm trying to save my pesos at the moment, so bikes are taking a back seat (again). To top all that off I connected up all the elcrics and guess what... no friggin spark AAAGH >:( >:( A process of elimination changing bits across from the 465 (although some bits don't change over).
This bike has been a challenge and I would never do one that was in such poor condition again. I will post some progress photos. So close, but yet so far. XYZ did finally send me some side covers, so it's almost there.
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What did you end up coming up with, got the same issues with my 465 & really don't like the housing someone has butchered to fit that has the cable coming straight out the front then bending along the bars
Much prefer the genuine gunnar gasser on my CZ both in action & how the cable runs
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Gunner Gasser can be made to fit as someone has fitted one to my 465. Works well. Haven't really looked into how it was done.
For the 250 I ended up paying way too much for the standard thing. Standard cable and everything. Kind of the cheats way out but .....
You can get everything NOS apart from the internal gear. The throttle tubes are hard to get hold of but but not impossible.
I still have the gunner Gasser copy throttle - just looking for a bike that the throttle fits on properly, then I will but that ;D ;D.
In the defence of the people on Ebay that I bought it off they did say it wouldn't work on a Yamaha. I thought "how hard can it be". Apparently too hard for me ::) ::)
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I don't feel like forking out $150us postage for a second hand throttle assembly & was hoping you'd come across a cable that fits, may have to work out how much outer cable to remove
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YZ250, i have the original 250 H throtle setup with a broken tube and broken clear top but the alloy bits and internal gear are all good , make me an offer, i live near Sydney and will post to you if you want.
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Guys remember there are two types of twist grips US and EURO , We in Aust had the Euro with the gear and clear top . Where as the US had a straight pull unit . the Euro type is avaliable from Yamaha Aust . Iainyz
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YZ250, i have the original 250 H throtle setup with a broken tube and broken clear top but the alloy bits and internal gear are all good , make me an offer, i live near Sydney and will post to you if you want.
Sounds interesting as I think the 125H has the same arrangement. I think I have the rest of the bits to make that work.
Want to post a picture or two ??
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yz250 sorry i am too stupid to post pics, check PMs.
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still have the gunner Gasser copy throttle - just looking for a bike that the throttle fits on properly, then I will but that .
Genuine Gunnar Gassers are good things but those Taiwanese copies are positively dangerous and I wouldn't use one under any circunstances. The little cutout where the cable nipple slots in has a tendency to break, causing the nipple to turn and sometimes jam in the throttle body...often on full throttle. I've had it happen to me twice and many other racers have experienced the same thing. There's a thread on here somewhere full of horror stories.
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Thanks Firko - its in the bin. Not a lot of good to me anyway as it doesn't work on a Yamaha.
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It belongs in the bin but as an aside, I can't understand why it won't work on a Yamaha. It shouldn't matter what bike it's on....I've used both Taiwanese and Swedish Gunnar Gassers on Mikuni carbed bikes including Yamahas with no problem whatsoever. The brand of carby used should be the criteria, not the bike it's on. I've used them on my Bing equipped Maicos and the Amal carb on my old DT1 as well with no adaption problems that I can recall. :-\
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Try the domino quick action, they work great. Use a universal throttle cable kit and make up the cable to your length and you're away.
Ballards have the throttle on page 66 of their catalog.
http://www.ballards.cc/catalogue-2011
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Gunnar throttle assembly
http://ozvmx.com/community/index.php?topic=4729.msg44568#msg44568
http://ozvmx.com/community/index.php?topic=2804.msg26497#msg26497
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i think john titman racing had some gunnar gasit throttles 07 3245 7499
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It belongs in the bin but as an aside, I can't understand why it won't work on a Yamaha. It shouldn't matter what bike it's on....I've used both Taiwanese and Swedish Gunnar Gassers on Mikuni carbed bikes including Yamahas with no problem whatsoever. The brand of carby used should be the criteria, not the bike it's on. I've used them on my Bing equipped Maicos and the Amal carb on my old DT1 as well with no adaption problems that I can recall. :-\
It's not that they don't work rather you need a custom cable due to the gooseneck top on the carb, looks like most inner cables are around an inch too short to fit
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It belongs in the bin but as an aside, I can't understand why it won't work on a Yamaha. It shouldn't matter what bike it's on....I've used both Taiwanese and Swedish Gunnar Gassers on Mikuni carbed bikes including Yamahas with no problem whatsoever. The brand of carby used should be the criteria, not the bike it's on. I've used them on my Bing equipped Maicos and the Amal carb on my old DT1 as well with no adaption problems that I can recall. :-\
It's not that they don't work rather you need a custom cable due to the gooseneck top on the carb, looks like most inner cables are around an inch too short to fit
What Tony said. It could be made to work, but is a lot of messing around.
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I normally use Swedish Gunnar Gassers on all of my bikes and have never had a problem with them. I recently tried one of the Taiwanese copies , as I had a quick look and couldn't see any noticeable differences. But the first time I used the imitation throttle, it let me down by jamming in the off position and the bike stalled. I had landed off a jump and the part of the throttle tube that holds the cable nipple, pushed past the stopper (which is built into the top cover) and jammed. It took a bit of effort to get it free again. It was a good painless lesson and I will never use one of the Taiwanese throttles again.
I probably put the Gunnar Gasser on Tony's YZ465H, as I had that bike an owner or two before him . I would have used a Husky cable, as they came out with a Mikuni carb and Gunnar Gasser as O.E.M. I know that Les at VMX Unlimited sells the Swedish throttles for only a few bucks more than the imitations and he also sells an aftermarket cable which suits the Gunnar Gasser to Mikuni or Bing carb (and I think that this cable is a bit longer than the standard Husky one ).
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Thats what I was hoping someone could come up with, I have a new needle jet to fit before the weekend so I'll be able to measure how much inner cable is needed at the carb end then ask Les to check the cable fitted to a genuine throttle before I order the parts
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Not sure if its been mentioned but www.husqvarna-parts.com has the Gunner gasser if anyone needs one.
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I probably put the Gunnar Gasser on Tony's YZ465H, as I had that bike an owner or two before him . I would have used a Husky cable, as they came out with a Mikuni carb and Gunnar Gasser as O.E.M. I know that Les at VMX Unlimited sells the Swedish throttles for only a few bucks more than the imitations and he also sells an aftermarket cable which suits the Gunnar Gasser to Mikuni or Bing carb (and I think that this cable is a bit longer than the standard Husky one ).
You are right Mark. It would have been you. I should have twigged to that ::)
Want to tell the story about what happens when you fit the wrong cable :o :o ;D ;D
Come on - you know you want to ;D ;D
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May have to order 1 of these when I get a new front plate
http://www.dcvmx.com/xcart/product.php?productid=18791&cat=573&page=1
Venhill list this, I've used their cables before so I may order a couple tonight
http://www.venhill.co.uk/Motorcycle_Hoses_and_Cables/YAMAHA/125/YZ/YZ_125_1977_(D)/Y01-4-007-7_YAMAHA_THROTTLE_CABLE.html
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Emailed Les the part number & he says there are some coming in his next order fron Venhill due in the next few weeks :)
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I normally use Swedish Gunnar Gassers on all of my bikes and have never had a problem with them. I recently tried one of the Taiwanese copies , as I had a quick look and couldn't see any noticeable differences. But the first time I used the imitation throttle, it let me down by jamming in the off position and the bike stalled. I had landed off a jump and the part of the throttle tube that holds the cable nipple, pushed past the stopper (which is built into the top cover) and jammed. It took a bit of effort to get it free again. It was a good painless lesson and I will never use one of the Taiwanese throttles again.
Firko has been giving warning of the Taiwanese copies jamming OPEN for years ;) :-[.
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These are the cables to ask Les for that fit to the gunnar gasser throttle
(http://i788.photobucket.com/albums/yy166/tony27_photo/065.jpg)
(http://i788.photobucket.com/albums/yy166/tony27_photo/064.jpg)
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I had the same issues as Mark.
The warning post is on here somewhere. The other is http://forums.mxtrax.co.uk/showthread.php/314488-Gunnar-Gasser-cheap-copy-warning (http://forums.mxtrax.co.uk/showthread.php/314488-Gunnar-Gasser-cheap-copy-warning).
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Do not, under any circumstances use a Chinese made Emgo brand Gunnar Gasser copy throttle on your bike. It will fail and you will most probably be hurt. I've campaigned elsewhere on this forum for these nasty pieces of shit to be avoided at all costs.....even banned if possible.
I recently got sucked in by an eBay merchant called Niche Cycle supply, buying what I thought was a Magura 314 throttle. What I got was an Emgo brand knock off. http://www.ebay.com/itm/170754766842?item=170754766842&viewitem=&sspagename=ADME:X:RTQ:MOTORS:1123&vxp=mtr (http://www.ebay.com/itm/170754766842?item=170754766842&viewitem=&sspagename=ADME:X:RTQ:MOTORS:1123&vxp=mtr)
I complained to the seller and reported the dodgy listing to eBay but as is usually the case, neither seller or eBay give a shit Niche is still selling them with the same misleading listing so eBay's complaint department is a toothless tiger. If the Emgo Magura copy is as bad as the Gunnar Gasser copy I predict even more heartache down the line.
The Venhill cables sold by Les at VMX Unlimited are The Best.
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Magura should go after them for false advertising. Pretty sleazy if you ask me.
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The ebay seller that I bought my copy one from was a great deal more honest. He instantly withdrew all remaining ads for the copy Gasser. To date I don't think he has relisted them. This seller was an ex-speedway rider who many years ago had a jammed throttle causing him a big off (not a chinky copy though).
I don't think the original manufacturers will have a hope of persuing a claim if the goods are made in China as they don't give a toss about copyright ! Or anybodies safety either.