bigred1977 Posted September 8, 2013 Report Share Posted September 8, 2013 hello, I am new to this site, however have been reading through the forums and thank all for there info. I have acquired a banshee 535 cheetah set up originally sold by trinity.prior to this I have had no experience at all with these set ups, this 535 is mounted in a 2010ktm 450 chassis and its objective is beach racing, it has the following,kehin 41mm taperbores,22cc domes,drag pipes, dynatek igniton,535 kit,straight cut primarys,wiseco basket,100hp fast clutch,mod shaft, short cam shift star,adjustable timing plate, I run it on vp mr109. I do have acces to a dyno, which I have used, I have had nothing but problems with this bike, I got it seized and when I pulled it down, it was a cold 4 corner, I checked the jetting which was 180 main 60 pilot and mid clip pos, so was happy with that. igniton was stock pos, it had 25cc domes fitted and I rebuilt the engine with a little more ptb clearance, ran through the heat cycles etc and popped off the pipes, bores and pistons looked spot on, let it cool down and did a comp test 140 each cylinder and even, it was set at a conservative 1,3mm squish. anyway with the engine running, I ran a tank of gas through it 40;1 and put it on the dyno, was pretty disappointed to see only 85 at the rear, at this point started fiddling a bit, brought the jetting back ended up 50 pilot, 165 main and dropped the needles, came crisp and into life a bit, but still only manage 96hp, thought this was stillconservative. I called trinity for some info on there components, they were very helpful and suggested I go to 22cc domes and +5. I ordered and fitted them to the engine, they recommended 1.0mm squish...... now heres the odd part, when I fitted the domes and was setting up the squish I found the the clearance get tighter towards the center of the piston!!!! I was alarmed at this as this would work against theorey, rather than go any further I rung trinity and explained, he replied OH! you got that have you, to which I said yeah, do you run them like that to which he said yes should be fine, just set it up in the middle of the squish, I asked really, he said yeah will be fine, I jumped off the phone a little perplexed, but thought oh well its there product there setup, ill stick to the rules so to speak.... anyway on with it and back to the dyno... 22cc fitted 1.0mm squish and +5 on the ignition, bike ran back at 85, I was thiking wtf at this point, it did take of with a huge hit though but still, crap results for the changes, rolled back into the work shop to find the plugs backed out!!!! wtf the plugs were a good rich colour and the running temp cool too.. race fuel seemed odd.. plulled the head too find the inner orings, looking frazzled and the combustion mark most prominent ant the piston crown sqush to bowl edge, now am no expert but that is fuked, can anyone shed some light for me hear, seems like am detonating at rich and cold temps, fuked.. must be that angle, but trinity say not????? also could anyone shed light on why the hell my flywheel seems to be welding itself to the crank!!!! new crank, flywheel, stator ywice over now, got me fuked, lapped in checked measured, new key, balanced, you name it av done it, bloody odd engine, just about ready to torch this thing.... thanks in advance.... Quote Link to comment Share on other sites More sharing options...
dave5.0 Posted September 8, 2013 Report Share Posted September 8, 2013 Do some more searching on the site. If you're asking these questions you haven't looked much. Search trinity cheeta. Been an ongoing saga. Many with the same results you have. And from many years ago. Quote Link to comment Share on other sites More sharing options...
Coupelx Posted September 8, 2013 Report Share Posted September 8, 2013 This is typical of the trinity junk. Have domes cut by a site sponsor. The 4 corner sieze is typical of the bigger bore cp cylinders when run long and hard. The RZ forums have some really good info about this. Quote Link to comment Share on other sites More sharing options...
special06shee Posted September 8, 2013 Report Share Posted September 8, 2013 Call a Redline racing. Explain to him. He will cut you a set of domes. Problem solved Quote Link to comment Share on other sites More sharing options...
J-Madd Posted September 8, 2013 Report Share Posted September 8, 2013 Blue locktite on the crank will help the flywheel issue. Quote Link to comment Share on other sites More sharing options...
10milmike Posted September 8, 2013 Report Share Posted September 8, 2013 First off 96 HP on a un ported 535 is not bad. Second u listen to Trinity BIG Mistake. A 535 is a good Motor when set up right. There domes are junk. Call Tim Bond at Titan Racing he cuts the best domes for a cheetah. Your squish u want is .050 that is idea for a cheetah set up. My Cheetah makes a 114hp and 64 ft pounds of tq. But I have sent lots of time and money on mine. Plus it was ported and set up my one of the best in the industry. Do not call trinity and ask for there help. They are a bunch of retards. I leaned the hard way. Along with many other's. Again there domes are JUNK!!!! Sent from my DROID RAZR using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
springer Posted September 8, 2013 Report Share Posted September 8, 2013 its been said a couple of times already, but just to drive the point home, dont listen to trinity. they are notorious for using those shitty ass domes. half of the time, they sell the wrong ones and you will get the wrong angle like you did where it gets thinner towards the center. my cheetah came from them like that. i didn't even run it. went through the whole thing and fixed several issues that came from trinity and got new domes. camatv on here helped me fix (pretty much did it all while i watched) everything and i had some domes cut to his specs and havent had a problem since. do what others have already said. call someone that knows what they are doing. trinity does not. Quote Link to comment Share on other sites More sharing options...
bigred1977 Posted September 8, 2013 Author Report Share Posted September 8, 2013 hey guys thanks a lot for your input on this, it is just confirmation of what I thought, but at time when your not experienced in a certain product you do need some guidance. am in a bit of a situ and a risky one, great how we all start rushing when the heat is on,. I have the yearly race this weekend and I need to sort this asap, I do not have time to get domes cut from the states as I am in Australia. Am thinking of recutting the squish myself,i know like hell there will be the optimum cut but I need to get that taper angle bettered, maybe another 3 deg leading to the dome will definitely be better? Well its conclusive then, don't listen to TRINITY!! As for the cylinder been ported, I was under the assumption it already was from trinity, the kit was claimed 120hp, however am not too fussed on that but would of liked to see 100 at the least.... I think I have all my bases, covered, but this engine just keeps biting in the wrong way!! thanks again guys.. Quote Link to comment Share on other sites More sharing options...
lms1977 Posted September 8, 2013 Report Share Posted September 8, 2013 Yep trinity SUCKS... I fixed a few sets of there domes , first of 22 cc domes is high compression like 18 or 19 to 1 I just built a 543 cheetah and with 27cc domes it had way more than 140psi at around 1000ft elevation. Hope ya get it running right they are fun motors. Quote Link to comment Share on other sites More sharing options...
lms1977 Posted September 8, 2013 Report Share Posted September 8, 2013 I cut my own domes I belive I used a 12.5 degree angle and set it up at .045 Quote Link to comment Share on other sites More sharing options...
bigred1977 Posted September 8, 2013 Author Report Share Posted September 8, 2013 (edited) thanks for that, something to go on, yeah its 180psi on both with the 22cc... thing is it runs bloody crisp, sharp etc, but its just this issue, as a matter of interest on your 548 what jetting set up you finish with, cheers oh and to add to that I think trinity quote these as been 10 deg? so maybe the added 3 is the way too go, ill get them out and deal to them.... Edited September 8, 2013 by bigred1977 Quote Link to comment Share on other sites More sharing options...
10milmike Posted September 8, 2013 Report Share Posted September 8, 2013 Yea its not ported. If the most u got out of it was 96 HP. That's is what my did on the dyno 96 HP. But on there dyno it was 111. That place is a joke. I use to get parts there because my buddy worked there. They are only good for parts. 120 maybe on alky and a good builder setting up the motor. When u get all the kinks worked out u will love the motor. Good luck! Sent from my DROID RAZR using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
lms1977 Posted September 8, 2013 Report Share Posted September 8, 2013 I ran 170 mains 48 pilots cel in the middle clip. I ran shearer big bores 39 pwks Quote Link to comment Share on other sites More sharing options...
bigred1977 Posted September 8, 2013 Author Report Share Posted September 8, 2013 thanks for that, am on the right track then, results not too bad, and more optimistic marketing bullshit hp numbers eh..... ims1977 what ex port duration did you end up with on your ported engine, this engine seems to sign off rather quick see... Quote Link to comment Share on other sites More sharing options...
lms1977 Posted September 8, 2013 Report Share Posted September 8, 2013 Mine was not ported by trinity at all. 196/128 is what I set it at Quote Link to comment Share on other sites More sharing options...
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