http://www.nichecycle.com/ncs/categories/electronics/ignition-system/electronic-ignition/yamaha-rd250-400-r5-elec-ign.html
That's the Ebay special. Tytronic. I'm told if you like your machine running in reverse, buy one of these and enjoy.
I made the mistake of buying left and right handlebar switches from Niche, one was wrong, took 2 weeks, a few emails and multiple pictures sent, before they finally acknowledged the error and said they'd send return shipping label, they never sent it...
So I paid them $80 for 1 switch and I bought the other from John (Economy) for $60... I've been had.
:twocents:
lots of issues with those. fwiw, those are basically the cheapest garbage aircooled pertronix knockoff VW retrofit pickups.
that being said, i used a similar (better quality pickups) setup on the t500 i made myself. it was ok but def not performance oriented.
https://www.ebay.com/itm/323789002393?epid=4017004322&hash=item4b63541699:g:ARYAAOxymiVRAaoP
i use something similar on all my twins, except i get mine from simonbbc here in england. i use the fiat 500 type and make my own backplate. why use 2 pick-ups? you only need one, the red rotor ring has 2 magnets in it 180 degrees apart, so just run a wasted spark system. i started fitting the powerspark kit [with home made backplate] about 10 years ago - long before this bloke and others 'invented' this kit. i've run them without a problem on alsorts of engines - dt125, gt250, rg250, t10 and even fitted one to my old ajs 250csr. admittedly they aren't for max performance, but for everyday use what do you want for £35? i love them and at that price if they do break down, throw them away and fit another set - takes about 15 minutes to fit, or an hour if you're a novice :tung2-1: :tung2-1: :tung2-1:
cheers, gil.
p.s. did i mention i love them? you can also get them from accuspark. just remember - the red rotor rings, not the black ones.
damn, they've gone up in price:
https://www.ebay.co.uk/itm/130963483786?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D233199%26meid%3D09042e67d9b84ec4b53abd43ccada51e%26pid%3D101195%26rk%3D1%26rkt%3D12%26sd%3D362285870120%26itm%3D130963483786%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv9PairwiseWithPLXWeb%26brand%3DPowerspark&_trksid=p2047675.c101195.m1851&amdata=cksum%3A13096348378609042e67d9b84ec4b53abd43ccada51e%7Cenc%3AAQAGAAACID2x90GbvqqWW81C8hANZclL5Bxr2FYE5SGQL3V58iD4iu5VdRq%252B9L3p9fh0PyCO7zUU9p949LCJC0an1u8B6NksQYJR%252Fxolj2z%252BqQrUIAE%252Fj%252B7Su%252F00wJ6aHPumOes52Dl6tfvNmELkTrQ%252FKI0wXKtZKNAakK3A0iKWh58fHrJwDtoz58so51s9%252BH1frSz4WjOy3%252BodxrqmaPjM%252F9%252Bn3Imsm%252FaD6ueRCmm0KrHYNhBMvC%252BRwKs4bxaYX9R5c%252B2CHjXJzLnvucXQkiO5A%252FsThwlAddbCLfhj1GQDlaj%252FlChOa84C32U2iw1EP8%252FXcYQAs9vCU7fUEDAgeF%252FcLOd%252Fyaxh7WjjnV1t%252FY7jSI0BRHJMQxK%252FiRehkoRdKLU%252BI6twdmXMZswyMWI3EZJQTl3yAMOVLFrP2%252B%252F4E1J3SLQitXEXE3EPqnpAlV8IXh5%252BTerpvoe7EurkbUyJAMGxomPuvJ0CXL3AmDYGp16vNHqH%252FVRAnCJautolgM8S%252FJXxdN3BfmQkkflk898OcjUctUDdDFQRW5%252B9svkZz%252BSH4QVVZegk8NXk34bWGhLBw4zsaDbHjZ0JvUZl%252Ba5HQ8q2WtShXH%252B4M8ocynMGgSddIVbcVL632NNwE%252BB0UFEH3sLP66XeuOcQ1nkOny0fwIsf9Gd5j0td01lD%252BZSVLVot9QmCGc%252BTuNWuf72WiuFAmtgrtrYZ7RFqhv5A4%252FEptCqPOwWg8U0%253D%7Campid%3APL_CLK%7Cclp%3A2047675&epid=3021736127
i did very similar setup using allison car igntions with a dual lead coil for years on rds. they work well.
on an automotive 4 cyl @ 5000 rpm, the coil fires 10,000 per revolution. on a v8, double that. 20,000 firing cycles per minute. does it work? on a twin? yes. however, i left mine (the t500) with 2 pickups so i could revert back if need be and work the pickup 1/2 the amount. but, i may do wasted spark dual coil this go around.
So, we agree.
Pertronix units are still on my RD as well as our GT750. The key to keeping them from starting in reverse is to add an extra magnet so the timing is way off in reverse. It's the same strategy as the optic style units use.
I really need to get my HPI kit installed though.
^ yup.
increase the dwell time . the VS dynas are made the same way. ;)
Quote from: m in sc on August 19, 2021, 11:30:22 AM
^ yup.
increase the dwell time . the VS dynas are made the same way. ;)
My VS ignition still ran in reverse somehow. That's why I ditched the idea altogether and went Vape. Maybe my timing was way off. But, I don't see how using the dial gauge and watching the spark crack.
beats me how that happens . almost impossible unless it was way off. but.. again.. timing light.
I really need to just buy a not used-and-half-broken timing light. I know you posted an actron before. Would make sense since I tends to be inside my motor's frequently lol.
Regular Dyna or similar designs will run backwards. I know my GT750 version did.
VS system uses dyna or similar pickups but I believe that he has extra magnets in the rotor so that if the thing kicked back, the timing would be so far off, that it cannot run.
Just kick it harder. The GT only did that once but it sure surprised me and took a moment or two for the brain to work out what was going on.
thats exactly it. and exactly why dyna quit selling an rd unit a LONG time ago (they never figured that bit out).
O'Reilly Auto loans test equipment. I borrowed a fuel pressure tester and noid kit to test the fuel injection on my Royal Enfield. I'm sure they have timing lights. I purchased a Bosch timing light that does 2 and 4 stroke engines from them for working on the dune buggy.
I was looking in the Tech Library for info regarding timing with a timing light but couldn't find a thread. Would it be possible for someone familiar with the ins and outs of it to create a post?
Thanks
process is basically the same for.. anything. note the video link int he threads.
https://www.2strokeworld.net/forum/index.php?topic=1139.0
https://photos.imageevent.com/supertune/mikemrd350/Project%20mike%201st%20fire%20hpi.mp4
I had a Dyna on my bike and it was sitting there idling real low and all of a sudden it lets out a little cough/misfire and starts running backwards. And another good one. I was working on a little 4 cylinder industrial engine that had a Pertronix ignition. When it was shut off it stopped just past TDC on a compression stroke of one of the cylinders. The rotor was pointing right at the plug wire for that cylinder. When you shut the ignition off on the Pertronix it causes the coil to fire. I can't remember what I was checking, but I turned the key on. A few moments later I flicked the ignition switch off and then immediately on again. The motor started, no starter motor needed. :omg:
coincidentally put this on tonight.
Quote from: teazer on August 19, 2021, 02:05:16 PM
Regular Dyna or similar designs will run backwards. I know my GT750 version did.
VS system uses dyna or similar pickups but I believe that he has extra magnets in the rotor so that if the thing kicked back, the timing would be so far off, that it cannot run.
Just kick it harder. The GT only did that once but it sure surprised me and took a moment or two for the brain to work out what was going on.
"Just kick it harder" is good advice for all sorts of situations in life. I like it.
Kick it harder or use a bigger hammer...
so, full disclosure:
well, i put the pickups in, the ignition worked great, i mean stellar. like, pull a pretty damn good wheelie in 1st gear good, which is something on a stock t500 as they are long as an aircraft carrier. :olaf:
then.. the RH coil took a shit on the way to work. :bang: :huh:
so, i used a bigger hammer, reached out to Benji at treatland, and ordered an HPI for the 500. the only recurring issues i've had with this bike has been ignition failures, intermittent or otherwise.. I know i could replace the coils, and be ok on the cheap, but i plan on keeping this bike for a LONG time. the whole unit is under 300 shipped and the little rotor should help it wind faster as the flywheels on the 500 are huge anyways. Im pretty sure a lot of these issues are due to the damp environment in fla it sat in for all those years.
I've had my engine run backwards. It was pretty scary.
Quote from: Striker1423 on August 19, 2021, 07:30:49 AM
That's the Ebay special. Tytronic. I'm told if you like your machine running in reverse, buy one of these and enjoy.
haha!
way back before MZB redesigned the rotor on the now vape ignition, mine fired up backwards once. it was idling, didn't know it was in reverse except it sounded weird (electronic tach). then it grabbed the kicker.. see the results. :eek: yes, i had to replace the cases. :huh:
I did exactly that with my Pertronix system. Not cool.
Quote from: m in sc on August 19, 2021, 10:53:28 AM
i did very similar setup using allison car igntions with a dual lead coil for years on rds. they work well.
I can attest to this. XR700 Crane ignition is reliable and about the cheapest you can do. Had the XR700 on both the RD350 and the RD400. about 100 bucks for the XR700 kit. modify a fender washer and tack weld it to the points cam, dual spark coil...i think at least 3 ohms resistance....a drill and bits w/ tap and dies and Spacing the triggler correctly.
The only dial indicator i like to use is the very small Central Tools D.I. that fits under the tank. Also when you time it, use a post office box card board envelope and fold it around the generator to shield the trigger from any light while timing it.....I had a side cover fall off while riding and the sunlight had the igntion go BONKERS. Very important to keep light away from the trigger while timing.
Mark can you confirm that it is better to time w/ the bike running a slow turn static time? I remember turning the crank 3.0 turns clockwise and then sneaking up (counter clockwise) to 1.8~2.0 mm BTDC w the key on and a battery charger hooked up to the battery. I had no ill effects w/ Judy's 400 doing it this way, but I'm sure Mark will probably say, make your timing mark on the generator and then strobe it while running...idle? or higher rpm?