|
Post by mraxl on Jun 28, 2014 8:05:06 GMT -5
|
|
|
Post by MooKaw on Jul 5, 2014 12:03:55 GMT -5
You really can't precisly time a CDI triple unit without a light. What is a good timing light for a triple? I know you need one to handle the more frequent firing.
|
|
|
Post by miller on Jul 29, 2014 7:58:49 GMT -5
Sorry to catch on this late.... High speed knock can kill a piston(s) in a few seconds. A few ways to combat high speed knock are: - increase mixture strength at WOT - reduce CR - improve headshape (squishaction) - use fuel with higher MON-value Hope these pointers help you forward!
|
|
|
Post by vtcat on Sept 7, 2014 8:25:40 GMT -5
Hi,if I remember correctly in Snow Tech a few years ago they said that even in Mikuni Hex,that over 500 was created some years later and the sizing is different.Like a 520 is smaller than a 500, a 540 was about the same as a 500.Anyone remember this?
Brec
|
|
|
Post by Jim on Sept 7, 2014 13:28:43 GMT -5
One fella took off his brand new boxes at Donnie's to cure a misfire.. If it's the unit I think you mean, Dave sent the single late H1 combined A and B unit back to me and I tested it with my motor driven alternator to 11,000 rpm for an extended time, and then ran it at 7,000 for about half an hour until it got quite hot here on the bench. Then I ran it back to 11,000 another minute or two. This was with my special 5mm gap spark plug. It never missed a beat. I strongly suspect that the act of changing the unit caused something like a dirty bullet connector or ground to make good contact again, but without actually swapping the new unit back in and trying it again, we won't know. Since Dave is in Canada and I'm in the US, after my testing I decided not to ask him to try the unit again, but instead I built him a new one, tested it thoroughly, and sent it to him at no charge. I'm hoping he'll have a chance to try it and let me know how it performs before too long. For the record, I've sold about 100 late H1 combination A-B units over the last six years and have not previously had even one customer report a failure or improper performance.
|
|
|
Post by JA-Moo on Sept 7, 2014 14:41:02 GMT -5
Nothing is perfect, but if you have even seen Jim's work, and thought it has to be his ignition, when everything else is 40 years old, is a bit daft to even think it could be the new part.
|
|
|
Post by zambia on Sept 7, 2014 16:26:24 GMT -5
Nothing is perfect, but if you have even seen Jim's work, and thought it has to be his ignition, when everything else is 40 years old, is a bit daft to even think it could be the new part. Who are you calling daft? I rode the bike for an hour...the hotter it got, the lower the rpm at which it signed off. We swapped the iggy box with 40 year old units and it pulled right up to red line immediately. I haven't got a bad thing to say about Jim's parts or his customer service - he is the best person in the world to deal with. I don't recall 100% but I think we put the aftermarket unit back on and the problem returned - Dave can confirm this. Believe me, the box was the last thing we suspected as problematic.
|
|
|
Post by Jim on Sept 7, 2014 16:45:11 GMT -5
I asked Dave if my new unit was tried again, and he said it was not. I really wish it had been so I'd know for sure if it was the problem. But I did keep the unit in question, and plan to get it installed on an H1 and give it a good test at some point. I can tell you that on my work bench with no forced air flow, it got very hot and continued to run as fast as ever.
|
|
|
Post by Ned on Sept 8, 2014 8:34:31 GMT -5
One fella took off his brand new boxes at Donnie's to cure a misfire.. If it's the unit I think you mean, Dave sent the single late H1 combined A and B unit back to me and I tested it with my motor driven alternator to 11,000 rpm for an extended time, and then ran it at 7,000 for about half an hour until it got quite hot here on the bench. Then I ran it back to 11,000 another minute or two. This was with my special 5mm gap spark plug. It never missed a beat. I strongly suspect that the act of changing the unit caused something like a dirty bullet connector or ground to make good contact again, but without actually swapping the new unit back in and trying it again, we won't know. Since Dave is in Canada and I'm in the US, after my testing I decided not to ask him to try the unit again, but instead I built him a new one, tested it thoroughly, and sent it to him at no charge. I'm hoping he'll have a chance to try it and let me know how it performs before too long. For the record, I've sold about 100 late H1 combination A-B units over the last six years and have not previously had even one customer report a failure or improper performance. Sorry. The box is installed but I have yet to take the H1 out for a good run. I've been busy riding the H2C.
|
|
|
Post by Jim on Sept 8, 2014 8:47:18 GMT -5
No rush Dave, I just want to know things are working the way they should, whenever you do get a chance to find out.
|
|
|
Post by zambia on Apr 4, 2015 8:32:20 GMT -5
|
|
|
Post by Walms on Apr 4, 2015 8:55:06 GMT -5
Looks good Zed, I bet it sounds throaty as well! You'll have her dialled in by the end of the day.
|
|
|
Post by pipe welder on Apr 4, 2015 10:45:28 GMT -5
The pipes look great Ian. You can put a band clamp over the EGT holes. Here's a photo of the standard EGT sensor and mount used on two strokes. You can see their made with a standard band clamp. If you want to use EGT sensors make sure you get the correct length for the diameter of the pipe. They are a very good tool for ensuring you get the correct mixture for maximum HP. at WOT.
|
|
|
Post by zambia on Apr 18, 2015 22:30:04 GMT -5
Switched to 35 pilots today and it definitely helped - still a bit of four stroking so I tried dropping the needle a notch. This move didn't clear up the four stroke and I am idling a bit lean. Might try 30 pilots?
Jim, the EGT hole has a hollow bolt welded in pace - I'm trying to find a correct thread domed nut to cover them.
|
|
jyrgnorway
2nd Gear
H2B CAFE, H2B, H1B, F8 BISON, Z1000ELR, RD500
Posts: 468
|
Post by jyrgnorway on Apr 21, 2015 10:40:12 GMT -5
Hi. If it idle a bit lean, but four strokes at small throttle openings, you should have a look at your needle jet and cut away. Is your cut away 2.5?
What is your needle jet? P6?
What needle?
|
|