Crofter985'S KLX650C supermoto build

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Sandblaster
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Re: Crofter985'S KLX650C supermoto build

Post by Sandblaster » Mon Nov 10, 2014 1:03 am

Crofter985

Made up a frame for a reference of the seat mounting and the rear mudgaurd mounting.
Crofter985 klx650c supermoto build 129.jpeg
Crofter985 klx650c supermoto build 129.jpeg (249.12 KiB) Viewed 2596 times
With the tank lifted 15mm it also moves it back around 10mm, the frame or jig, has been moved to compensate.
Now off with the old one....
Crofter985 klx650c supermoto build 130.jpeg
Crofter985 klx650c supermoto build 130.jpeg (253.38 KiB) Viewed 2596 times
Now, no going back now, I bent 4 "U" shaped bits of steel flatbar with a 25mm jaw and turned 4 25mm bits of alloy bar for mounting points for the subframe.
Then got on with roughing out a frame.
Crofter985 klx650c supermoto build 131.jpeg
Crofter985 klx650c supermoto build 131.jpeg (311.69 KiB) Viewed 2596 times
That's where I'm up to now.
Still a lot of fabrication to go yet and a lot of stuff to fit in to that subframe.
If bikes are for kids I'll never grow up.

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Crofter985
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Location: Shetland Islands, UK

Re: Crofter985'S KLX650C supermoto build

Post by Crofter985 » Tue Nov 11, 2014 8:30 am

The subframe/plenum is going to be a slow process but I have had one bit of light today in the "how do I get all this stuff in here?" direction. First off the battery, w/m injection pump, w/m controller, CDI, rectifier, 4liters of plenum space and a w/m tank, all have to go in the space, what I thought was a bit of progress was as I was intending making a silencer to go under the engine the space for the silencer as it normally is could be taken over by the water/meth injection pump. Great, it will limit runs to non rainy days but it's probably going to be that anyway, I'm not the keenest ever on rainy days as we only have one kind of rain on this little island and it's the cold kind.
One question, how much water meth mix will go in with every litre of fuel? I think I saw somewhere it might be 20-1 roughly, is that close????? The tank is around 17litres I think and I'd like to make the w/m tank enough to do two fills of the tank, which if it's 20-1 would be doable.
So to keep some momentum going I messed around with the intake tube for a bit. I got a 2 1/2" aluminium tube the other day but all I could get was stuff with a 3mm wall, a bit thick for what I was needing so I bored it out to just under 2mm and I need a bung for the water meth jet, it's got a 1/8bsp thread so I got a tap for that and made up a bung and drilled a hole to weld it into the pipe
Image
Welded it in
Image
Now that's not the prettiest weld ever but there's no holes and it's not going to fall out, that thin aluminium is not the easiest to weld.
Here it is, with the w/m jet in place, the blue hose is a 90 bend neoprene hose cut in half and turned so you get a dogleg of hose, which was needed to clear the upper shock mount.
Image
So there it is the AEM kit recommends the jet goes a few inches behind the throttle plate so this should push all the buttons for that. I will make a door on the plenum so I can get to the jet later if needed.

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Sandblaster
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Re: Crofter985'S KLX650C supermoto build

Post by Sandblaster » Wed Nov 12, 2014 1:55 am

I sure like this unique build..
Are you gonna dyno it after you get it up and going?
If bikes are for kids I'll never grow up.

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Crofter985
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Re: Crofter985'S KLX650C supermoto build

Post by Crofter985 » Thu Nov 13, 2014 11:24 pm

Thanks, I appreciate your interest.
Dyno, well I'd really like to, dunno what to do about that, there's no dyno round here. It would be a 12h ferry ride off the island and dyno time and back again. Not impossible I know of guys who do that. I could try making one, I found a guy on YouTube that made a water brake one, looked doable. I wondered about a big flywheel with a speed sensor on it, that would be really dooable, dig a hole, bit of concrete, bearings, etc..... = dyno
That would give me the ability to develop the project, see how far I could push it.

Btw just a little update on the bike, I found a company called ignitech.cz they specialise in one off cdi's for bikes that are programmable, it looks like it's worth an email to find out more, wonder if the do boost retard? Could push a couple more psi out of the old girl..... :D

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Sandblaster
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Re: Crofter985'S KLX650C supermoto build

Post by Sandblaster » Fri Nov 14, 2014 1:45 am

Never considered making a dyno.
How would you calibrate it?
And just out of curiosity, what island do you live on?
I guess you mail order a lot :D
Also, I have more then a few klx650c and r parts.
If you need something, let me know and I'll sharpen my pencil for you. :shock:
If bikes are for kids I'll never grow up.

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Crofter985
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Location: Shetland Islands, UK

Re: Crofter985'S KLX650C supermoto build

Post by Crofter985 » Fri Nov 14, 2014 12:40 pm

Well I think for a dyno or horsepower measurement goes, HP is torque and the rpm it is produced at so if I make a big flywheel out of steel then fill it with scrap and concrete so it's solid and very heavy, weigh it, it should be straight maths from there.
Weight of the flywheel, speed, change of speed over time, that should equal power. A ABS sensor or something to accurately measure the flywheel speed, hooked to a PC. I'm not up to writing that sort of a program but I think I would find someone who could. I bet if I look in the right places on the internet it will already be out there.
I live on the Shetland Islands, north most island group of the UK. Just over 20,000 of us here, Island life kinda encourages you to make do or do without, so if I want to measure HP, I find some old scrap lying round and build something.
When I get some time I will do some real detailed research on how to build a dyno, all that waffle above is just stuff that's been floating around in my head for a bit.
You mentioned mail order, yeh I do that a bit, I bought an oil pump from you for the KLX. The world shrinks with the advent of the internet. The shops on the island have taken a big hit around late 90s when the internet came here and the possibilities of buying online, because of our remote location online shopping took off fast here.
I am almost certain I will be sending you an email soon asking for parts, breaking things is all part of development. I am looking out for a complete C engine, I was thinking to breathe on it then hook up the turbo parts to it through time.
I am keen to get the bike running with some forced induction, just as a carrot on a stick for me, a milestone, a stick in the sand to keep momentum and interest.

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Sandblaster
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Re: Crofter985'S KLX650C supermoto build

Post by Sandblaster » Fri Nov 14, 2014 3:40 pm

Ok now you have the wheels turning....
More on this later :D
If bikes are for kids I'll never grow up.

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Crofter985
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Location: Shetland Islands, UK

Re: Crofter985'S KLX650C supermoto build

Post by Crofter985 » Fri Nov 14, 2014 9:08 pm

This must be lunch time now in Oregon, are the wheels turning now? What's on yr mind mike?

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Sandblaster
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Re: Crofter985'S KLX650C supermoto build

Post by Sandblaster » Sat Nov 15, 2014 2:39 am

Once I stopped and thought about it, your right, a dyno is relatively simple.
Of course accurate timing and calculations are required but I'm sure it's doable...
I just need to do a bit of research... and hit up a few buddies.. :D
We might just make a special thread on this 8-)
If bikes are for kids I'll never grow up.

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Crofter985
Posts: 240
Joined: Mon Nov 10, 2014 6:47 pm
Location: Shetland Islands, UK

Re: Crofter985'S KLX650C supermoto build

Post by Crofter985 » Sat Nov 15, 2014 10:39 am

Good plan it is a whole new project indeed

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