ESE's works engine tuner

[Frits Overmars]

I have resorted to using an original Suzuki GP125 unit with two 6Volt lighting coils wired in series. Its a very heavy flywheel compared to the KX80 one that I am using now...

How high are you going to rev that flywheel, and is your hospital insurance up to it? (I'm not kidding).

[Muciek]

If You could swap this flywheel and stator there You would have over 130W of power http://www.ebay.com/itm/ROYAL-ENFIEL...88f8c3&vxp=mtr

We use it in our engines, we rev them to around 7000 rpm. I can help You with wiring and regulator schematics ect. Flywheel weights around 800g.

Here is picture how You need to mount pickup and trigger. You can use one from Chinese scooter just need one with 2 wires or You could use that original one from suzuki.

[TZ350]

How high are you going to rev that flywheel, and is your hospital insurance up to it? (I'm not kidding).

Had one to 12k before but, Yess...... I am a bit concerned too.

[TZ350]

If You could swap this flywheel and stator there You would have over 130W of power http://www.ebay.com/itm/ROYAL-ENFIEL...88f8c3&vxp=mtr

That looks very interesting.

I will be running to 14K so twice the rpm means T quadruples.



That is four times the centripetal force required at the flywheel rim to hold the magnets and the rim itself in at 14k than there was at 7k but at least the explosion looks more contained with the Enfield setup. A smaller diameter rotor at the same rpm would reduce T by reducing the rims velocity.

The Enfield looks promising, Thanks.

[Muciek]

But we don't use them in Enfields. It's same setup as one used in vintage engine from here , and since the 40 year old magnets are not strong enough to produce enough power we use this. 7k in standard engine that is used to touring,and in tuned engines we rev it over 11k and it's ok.

[TZ350]

It's same setup as one used in vintage engine from here, and in tuned engines we rev it over 11k and it's ok.

Great..... I will get one, thanks.

[wobbly]

This is what you need - 100mm dia kicks out about 8 amps,have run them over 12,000 for ages,got one here with a reg if you want one.

[wobbly]

That tandem twin CAD rendering has a small problem, the cranks don't counter rotate - I see issues with the rider not being able to hold the bars.

[Ocean1]

That tandem twin CAD rendering has a small problem, the cranks don't counter rotate - I see issues with the rider not being able to hold the bars.

Meh. Just bump the constraints on the CAD rider biceps.

[Flettner]

Not counter rotating, but 180 degree firing tandem is smooth ( enough ). I have made one and run it on my gyro, certainly a lot smoother than the 180 degree parallel twin I have now ( without the ballance shaft ). The problem is the gear to crank attachment, there are a lot of harsh load reversals.

[TZ350]

This is what you need - 100mm dia kicks out about 8 amps,have run them over 12,000 for ages,got one here with a reg if you want one.

Deal Done - Thanks Wob

[husaberg]

That tandem twin CAD rendering has a small problem, the cranks don't counter rotate - I see issues with the rider not being able to hold the bars.

Wasn't the KR250 Kawasaki (road bike)non counter rotating though?
Never rode one or actually never seen one in the flesh either......
the cad rendering i couldn't open the link, so not sure what it was about, could have just been folly......
I did lead me to something else though........

[wobbly]

In an inline tandem twin,the only way to get the counterweights to cancel each other when both pistons are at 90* down and up the bore,is to have them counter rotate.
The original Kawasaki 250 tandem race bikes initially fired at 180* and shook so bad the frames cracked continually and the riders ( Mamola and Ballington who came here with them )
got blurred vision.
Once they fired both together with counter rotating cranks they were no problem at all.
The Rotax tandem as was used in bikes and in SuperKarts still, has counter cranks for super smooth no vibes running.
The Exactaweld had a very clever setup with an extra gear to allow counter cranks and have rotary valves on both sides.

[Yow Ling]

Wasn't the KR250 Kawasaki (road bike)non counter rotating though?
Never rode one or actually never seen one in the flesh either......
the cad rendering i couldn't open the link, so not sure what it was about, could have just been folly......
I did lead me to something else though........

Yes , the roadbike was like the RZ500 the cranks were both meshed into the gear on the clutch basket.
Not so many left now

[husaberg]

Yes , the roadbike was like the RZ500 the cranks were both meshed into the gear on the clutch basket.
Not so many left now

Like this.....