collapse

www.dimecitycycles.com


www.restocycle.com

www.CITYLIMITMOTO.com

www.jadusmotorcycleparts.com

www.bisonmotorsports.com

www.speedmotoco.com

www.cognitomoto.com

www.townmoto.com

www.sparckmoto.com

www.Moto-Madness.com

www.pistonsociety.com

www.steeltowngarage.com

GET DTT UPDATES ON FACEBOOK AND TWITTER

Author Topic: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)  (Read 43648 times)

Offline Qawls

  • Posts: 131
Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #50 on: Mar 23, 2013, 20:56:53 »
Hahaha awesome!

Offline Nebr_Rex

  • DTT SUPPORTER
  • *
  • Posts: 830
Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #51 on: Mar 30, 2013, 23:38:28 »
Throwing around the idea of having a third project bike.
18 in. spokes front and rear.  1.60/1.85 3.5
Stretch the  swing arm and rake the front.
Lose the fairing,seat, wiring harness and belt drive.
Add turbo to blow thru the carbs to make the NA bikes in sportsman nervous.
Use the factory carbs and air box.
Got the forged pistons just need to bore the block.
Just basically need a GT12 or similar size turbo.

.



Offline BLSully

  • Posts: 177
Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #52 on: Apr 09, 2013, 00:58:16 »
I'd like to see that! Looks like a good base with which to start...
'05 Vulcan 1500 Classic - Daily rider.
'79 KZ400 B2 - http://www.dotheton.com/forum/index.php?topic=42063.0
'80 KZ440 - Actually runs.

Support these guys: www.power-barn.com www.dimecitycycles.com

Offline Nebr_Rex

  • DTT SUPPORTER
  • *
  • Posts: 830
Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #53 on: Apr 13, 2013, 18:54:56 »
Swapped bikes with a local,said he was going to restore it.
Traded for his bobber/rat bike.
Did a little mock up to give you an idea of where I'm heading with this.





.









Offline 7aliveatlast7

  • Posts: 509
  • the bearded hessian
Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #54 on: Apr 16, 2013, 19:18:30 »
what is that spoked rear wheel that you're going to use off of?

Offline Nebr_Rex

  • DTT SUPPORTER
  • *
  • Posts: 830
Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #55 on: Apr 17, 2013, 00:31:48 »
3.518, aftermarket rim, 650 and up spoked wheel hub.
Offset on the sprocket is more on the bigger bikes so I'll need to make an offset counter sprocket to match.
« Last Edit: May 05, 2013, 15:06:23 by Nebr_Rex »

Offline Nebr_Rex

  • DTT SUPPORTER
  • *
  • Posts: 830
Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #56 on: May 05, 2013, 15:30:25 »
Not much ambition with lousy weather we have had. Maybe when spring finally gets here I'll pickup the pace a little.
I have wired up a bread board with a different circuit to try.
It is copied from a KZRiders.com members site.
The actual circuit he designed and built was used to replace the stock ignitor on a GPZ550.
This is just an experiment just like the GM hei module.
I have drawn up a circuit that is a simplified version to try after that.

.

Offline Nebr_Rex

  • DTT SUPPORTER
  • *
  • Posts: 830
Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #57 on: May 05, 2013, 15:39:27 »
Have had a little time to do some ebaying.
Found a Garrett GT1541 and a TD04.
The TD04 will work for the 750 project  I have planned.
And GT15  (according to the online turbo calculators) for the 440 drag bike.

Offline Nebr_Rex

  • DTT SUPPORTER
  • *
  • Posts: 830
Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #58 on: May 27, 2013, 14:48:23 »
Been working on the toys of others and not mine.
Finished the dune buggy death ride and did a tune up on a young gentleman's KZ440 LTD bobber.
Sold him some brake parts so he could have front brakes.
Also I gave him a set of exhaust pipes and case guards with some hi way pegs,stuff I'll never use.
I did oil and grease my pickup and clean and rearrange the shop.
Only thing done the bikes was to solder up another circuit to try.
And some pics of what I'll try to put together next.
The modulator will be controlled by a wide band o2 sensor to then control the fuel pump.

.

Offline Nebr_Rex

  • DTT SUPPORTER
  • *
  • Posts: 830
Re: Dr. Jekyll and Mr. Hyde ( a pair of KZ400s)
« Reply #59 on: Jun 24, 2013, 00:57:43 »
I got tired of burning up transistors and have decided to stick with the GM hei ignition modules.
What I have done is realign the ring with two lobes I made that is tack welded to the end of the cam.
This works with the variable reluctor/pickup coil epoxied in the rocker box to send a signal to one of the hei modules.
Having the cam advanced one tooth (+ 10 from stock) now gives me 60% duty cycle max for the injectors.
Flowing enough fuel for 42 h.p. ,which is close to the 40 h.p. rating of the 440.
There will be two injector circuits.
The primary will be the one triggered by the cam .
It showed 14% at idle and 29℅ at wot.
The secondary will be the spare pickup coil down on the crank not use by the ignition.
It showed 18% at idle and 30% at wot.
The primary side will always be on.
The secondary will be switched on and off by an adjustable pressure switch plumbed into the oil system.
At idle it will be off and when rpm/pressure goes up it will turn on.
Primary and secondary overlap at idle.
Since the ignition advances with rpm so will the secondary side.
The ignition counter weights will need to be lightened to slow down and smooth out both the ignition advance curve and the duty cycle growth.
What I am hoping for is 14% at idle growing to 60% at wot with help from the pressure regulator ( psi ) and wide band o2 sensor and pulse width modulator ( volume).
« Last Edit: Jun 24, 2013, 01:37:35 by Nebr_Rex »