Thread: 2/3 scale Indian Straight Four.
13th Nov 2013, 01:53 PM #1
2/3 scale Indian Straight Four.
I've been building a Straight Four Indian motorcycle, I started a month or so ago.
So far I've only built the four cylinder's and some of the exhaust valve's and oil feed line's.
It's all being done at two third scale using mainly timber and PVC, along with those every day thing's
I seem to end up throwing at most thing's.
This is pretty much where it's at, so as you can see I'm not to far along the track.
Hopefully in the end it will end up looking something like is
Over the next couple of weeks I'll upload some picture's of getting to this stage.
And then I'll add some updates as it goes along.
Anyway I hope you enjoy the build.
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13th Nov 2013, 02:11 PM #2
I shall be sitting and waiting,
Engine looks real nice already.
13th Nov 2013, 09:59 PM #3
I'm sure most of you know my work, but for those that haven't seen it here's two motorcycles I've made in the past.
Their an Ariel and sidecar from around 1916, and a Harley-Davidson board racer from the 20's.
Ariel 2.jpg Ariel 1.jpg
Harley 2.jpg Harley 1.jpg
Both are 2/3 scale to the originals and their constructed from recycled materials, mainly pine, mdf, pvc and old water pipe.
Along with a hole range of things you find around the house.
I should say up front I don't use plan's to build from, I just get some pictures from the net and start making it.
It's all very monkey see monkey do.
I don't know why but I always seem to make the engine first.
I guess it's the heart of the bike, and if you can get it right your half way home.
If there's any questions along the way I'm more than happy to answer them if I can.
But that's enough of that on with the build.
14th Nov 2013, 07:21 AM #4
The first thing I needed to make are the four Barrel's.
It worked out well that I'd made a prototype for one quite some time ago.
It's made from MDF, Pine, PVC and Dowel.
All it needed was a coat of satin black.
Once you start cutting on the bandsaw it doesn't take long to cover the floor with off cuts.
The first parts were the base plate's, fin's and spacer's, along with PVC to make the lower part of the barrel.
Once the lower section of the barrel's were cut, I stacked them in order and put a bolt through them.
Then it was on to the upper part of the Barrel's which get's a little trickier.
The Barrel at that point start's to project forward to incorporate the intake manifold and the exhaust ports.
At this point it seems appropriate to have something for scale, so I went for a trusty coke can.
14th Nov 2013, 05:31 PM #5Senior Member
- Join Date
- Jan 2012
- Yenda NSW
Being a biker I can really appreciate this build.Top marks for your imagination & quality of work,fantastic!
14th Nov 2013, 09:32 PM #6
I know I shouldn't jump back and forth, but having just finished the exhaust valves and the oil feed lines
I really wonted to show them.
Although in the end the hole area will be covered by the exhaust pipes I'm pretty happy with it.
At the moment all the parts are in primer, and I'll leave them like that until the engine is built.
The chrome paint I use really doesn't like being handled, and it marks up very easily.
About now is probably a good time to point out some of the things I use in making my work.
Although most of what's in the picture's is made from pine and MDF.
There's a few thing's you might not expect.
As you already know there's PVC pipe, but there's some other thing's as well.
The two rocker box's each have what looks like hinged inspection covers.
I still have to finish the one on the left, but the hinges are made from the inside of a pen.
It's cut into segments and has a bicycle spoke through it.
The cover's on the box's are cardboard from a Corn Flakes box.
The section that I just finished has parts from an old cloths horse, a texter, coat hanger wire and
copper tube from an old oil heater amongst other thing's.
It's always fun trying to make something look exactly like what it isn't!
Sorry about the jump I'll get back to the time line tomorrow.
14th Nov 2013, 09:44 PM #7
Imagination and ingenuity so well combined to make another top build......
15th Nov 2013, 08:24 PM #8
Back to the building of the Barrel's.
Once at this point it was time to set them square, and to make sure that they were level.
It's also a good time to get a couple of my levels in the photo's.
The smaller one is a Jennings and the larger a Davis.
The Jennings is showing the top's of the barrel's to be level.
The Davis is just there because it looks good!
IMG_0901.jpg IMG_0902.jpg IMG_0904.jpg
After that I inserted PVC pipe for the sparkplug and the exhaust, both the holes were drilled out with spade bits.
Then I filled any gap's and blended it all together with bodyfiller.
After some sanding and matt black paint it all start's to look more like being one piece.
The heads will be next.
16th Nov 2013, 08:14 AM #9
To finish the barrel's I needed to make the cylinder head's.
Which looks like a dome with eight fins across it.
To make something that looked like that I used 3mm MDF and Bodyfiller.
I made mould from an egg poacher, by filling it with bodyfiller.
Then before the filler had hardened off I ran it through the bandsaw.
This works really well by if you ever do it make sure the filler hasn't fully hardened.
After cutting some fins from the MDF it was just a matter of gluing it all together,
and shaping them to fit the top of the barrel.
When all four had been done it was on to the intake manifold for the carbie.
16th Nov 2013, 09:29 AM #10Skwair2rownd
- Join Date
- Nov 2007
- Dundowran Beach
16th Nov 2013, 12:27 PM #11
I'm pulling up a chair Trevor, another top build.
Just one problem - it looks too real.... Steve
-- Monkey see, monkey do --
16th Nov 2013, 03:14 PM #12
I'd just like to say thanks to all for the kind words.
I'm really enjoying building the Indian, it has a lot of complex shape's.
Which make it both challenging and fun to build.
Anyway I hope you enjoy it, as it goes along.
16th Nov 2013, 08:22 PM #13
The next part to make was the intake manifold.
Of the parts I've built so far this was the hardest to form the shape of.
But it all started with two pieces of MDF to make the top and bottom of the main section,
a piece of pine to act as a spacer to give it the right height.
And a length of PVC in front as the intake tube.
The intake has a line of fins on three of it's sides, they were made from 3mm MDF.
IMG_1012.jpg IMG_1013.jpg IMG_1014.jpg
Once each fin is cut and glued in place, they are blended into the rest of the manifold with bodyfiller.
I use matt black paint over the areas I've filled to make sure they have been sanded back properly.
After it was all sanded and painted I added the studs, to make it look as if it was bolted down.
Next will be the rocker boxes that sit on top of the manifold.
17th Nov 2013, 10:42 AM #14Skwair2rownd
- Join Date
- Nov 2007
- Dundowran Beach
I dips me lid to ya squire!!!
17th Nov 2013, 08:43 PM #15
The rocker box's for the Indian four are a real miss mash of parts and material's.
Honestly some times I think my work would be best described as being "Extreme Playschool Useful Box".
IMG_1048.jpg IMG_1049.jpg IMG_1052.jpg
The rocker box's are made from a piece of 3mm MDF as a base, when it was finished I thought it looked a little thick so I sanded it down.
A piece of pine makes the main body, and it has PVC pipe which was cut in half glued to the top and both ends of it.
The rounded dome sections on either end are formed with bodyfiller.
The front cover of the box and the hinge supports are cardboard from a Corns Flakes packet.
While the hinge it's self is made from the inside of a ball point pen, that's been cut into sections and has a bicycle spoke through it.
The spring is the wire from a twist tie off a loaf of bread.
The last picture show's the second rocker box in primer.
Along with the start of the valve guides and oil feed lines, which will be next.
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