HELEN: Davmo's Aluminum Frame Z50. Honda Z50 alloy monkey

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HELEN: Davmo's Aluminum Frame Z50. Honda Z50 alloy monkey

This is a discussion on HELEN: Davmo's Aluminum Frame Z50. Honda Z50 alloy monkey within the Z50, CT70 and JDM Monkeybikes forums, part of the General Talk category; Ok, some of you may remember this bike from a now defunct thread. I had this bike sitting on my table for the last few ...

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Thread: HELEN: Davmo's Aluminum Frame Z50. Honda Z50 alloy monkey

  1. #1
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    HELEN: Davmo's Aluminum Frame Z50. Honda Z50 alloy monkey

    Ok, some of you may remember this bike from a now defunct thread. I had this bike sitting on my table for the last few months, close, but not complete. There have been a bunch of things going on around here, and minibike building has taken a back seat, but now it is time to get back to it. Even though everything looks pretty close, it is all the details that take time to sort out. The mounts for the gas tank, wiring and ignition, seat relocation, paint and finishing, and then there are the "special details." So I was figuring that I could get it a little closer to being done mechanically, and get it off the table. Some pictures of the earlier assembly, and the Trail-Jet chrome tank I tried on for a while. The build took a turn after returning from the Vintage Japanese Motorcycle club meet in Helen, Ga, this year. Between the parts I got from Matt (HondaFiddyMan,) and the bikes I saw like Phong's (JDMCIVIC ) beautiful orange JT-1, I had a direction to take this thing. I got the seat, yellow headlight, rear-sets, and front cowl from Matt, and after seeing Phong's bike, I went home and tried a JT-1 tank someone had given me on the bike. Maybe it was the good memories from the meet, but everything just seemed to go together on the bike. As I started writing this thread today, one of the things that this build has been lacking came to me: a name. As before, everything gets a name around here, and this one is going to be called "Helen." I will keep updating over the next couple days or so, to try and get it up to where the build is now.
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    Last edited by davmo; 02-03-2014 at 02:44 PM.
    T Bolt USA and geezer like this.

  2. #2
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    More pics. Before anyone gets too jealous about someone giving me the JT-1 tank, let me show you the numerous pin-holes that only revealed themselves after stripping. Oh, well, that's what welding is for. The second tank picture shows how I dimple the pin-holes with a round punch prior to welding. That way, there is plenty of metal below the surface when you go to grind it back down. I also had to knock out side of the tank that was bashed in. To mount the tank, I made a bracket for the tail to hold down to the frame, and one in front that clamps to the frame that uses the stock tank mounts. The front bracket uses a rear tank cushion like the ones on a K3 and onward Z50 tank, while the rear cushion for this tank is from a K1 Z50 tank.
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  3. #3
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    More pics. You can see the JT-1 tank on the bike now, and it is a big improvement over the chrome one, if you ask me. You can see how the right-hand side of the tank looks beat up. This picture was after the dents were taken out. The different muffler guards, one with slots from a 60's CT90, and another from A 70's CT70. The round hole CT guard ended up being the one. The rear aluminum fender from a 70's Dirt bike, and the bracket I made to mount it. The rear stinger extension made for the minigunz exhaust to get around the shock.
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    Last edited by davmo; 10-27-2013 at 06:34 PM.

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    Pics of the gas tank rear hold-down tab, welded on. A little exhaust bracket to hold on the heat shield. There is a hose-clamp that holds the foot of that bracket to the pipe, so the guard can still come off. The front of the shield just uses the stock clamp with a little fiberglass wrap underneath (the stock honda fiberglass part is like $15!) The CDI box and wire harness mounted up. I started with a stock CRF50 wire harness, and added circuits for lights, front and back. There is a 90 Watt Rick Stator and a lightened flywheel under the side cover. You can see how the throttle cable and wire harness are held in place against the neck tube by the bracket for the front tank mount. One of the nice things about the bracket is that it slides. There are three different holes on the rear tank mount, and it makes it where the tank can be slid back. More on that later...
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    --X--'s Avatar

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    Looking good. Nice job on the tank. Welding the thin tank metal isn't easy. I usually burn through a few times then have to refill holes.

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    Man, when you get back to it, you really get to it.

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    Looking great thus far!

    -HFM

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    Cool build
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  10. #9
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    Thanks, guys.^^^^^^ Some more pics. When I mentioned how the tank can be slid back, it was because that is what ended up happening. I kept looking at the profile of the bike, and didn't like how the seat lines up with the rest of the bike. In the picture that looks a little dark, you can see how the tail droops in the rear. The answer was to slide the tank back about an inch, and move the seat back and up a little at the tail. Still need to make some new seat brackets to work things out, but you can see where the seat bracket (in the close-up shot) sits. Maybe I'm just being fussy, but the lines of the frame tube, exhaust pipe, seat, and tank compliment each other better in the last pics. There is a pic of the front fender with the still under construction mounting bracket. You can also see the beginning doodles with a marker, trying to come up with a paint scheme for the tank.
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    Last edited by davmo; 10-28-2013 at 06:21 PM.

  11. #10
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    The rearsets on the bike are another feature that still aren't a solid yet. While they feel fine when just sitting on the bike, I have to say the look of regular pegs is still appealing. That would mean putting another brake pedal and brake arm together. Here are some pictures from a while back with the pegs in the normal position. Making the decision a little easier is that there is a slight clicking of the kickstart against the rearset footpeg right now. Not a big deal, there is always some fitting involved in getting one of these set-ups to work right, could be as easy as using a different kicker. Tried to get some similar pics of both set-ups. Just messing around.
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    Subscribed. I love watching your builds take shape davmo. Can't wait to see how this one turns out.

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    I have the same contact issue between my rearsets and the kickstart arm.

    Its leaving a tiny tiny scratch on the kickstart arm.

    Personally I've left it, and I find that if I push down AND out on the kickstart arm it really helps.


    On another front, I know you seemed to put alot of deliberation into the tank / seat relationship...................................... ......personally (just my opinion) I don't like when tanks are too far back and they leave a big gap (open air) between the front of the tank and the headstock. On my builds I'd be moving the tank a bit forward to consume some of the unsightly gap between the headstock/triple tree and the front of the tank (Just my opinion)

    Cheers

    Will

  14. #13
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    Quote Originally Posted by 3cyltrbo View Post
    I have the same contact issue between my rearsets and the kickstart arm.

    Its leaving a tiny tiny scratch on the kickstart arm.

    Personally I've left it, and I find that if I push down AND out on the kickstart arm it really helps.


    On another front, I know you seemed to put alot of deliberation into the tank / seat relationship...................................... ......personally (just my opinion) I don't like when tanks are too far back and they leave a big gap (open air) between the front of the tank and the headstock. On my builds I'd be moving the tank a bit forward to consume some of the unsightly gap between the headstock/triple tree and the front of the tank (Just my opinion)

    Cheers

    Will
    Hey Will, I hear you on that unsightly space. Normally, i would try to do as you said, and move it forward a little more, but I have an ulterior motive besides just lining up the lines (i was working on it last night , cutting cardboard templates and the like.) Don't know if I will follow through with it, but I will share it soon.

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    Quote Originally Posted by davmo View Post
    Hey Will, I hear you on that unsightly space. Normally, i would try to do as you said, and move it forward a little more, but I have an ulterior motive besides just lining up the lines (i was working on it last night , cutting cardboard templates and the like.) Don't know if I will follow through with it, but I will share it soon.
    Is this going to be akin to the "junk drawer' on the magnum? It will be difficult to get your junk that far forward. Well, not my junk...

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    Googling around for something else entirely, I came across this build and it made me think of davmogul. Very nice lines on this simple build.


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