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Blood Sweat Tears and Grease => Projects => Restorations => Topic started by: irk miller on Sep 10, 2017, 18:23:49

Title: 1986 xr-z50r big wheel hellride
Post by: irk miller on Sep 10, 2017, 18:23:49
I just pulled in a 9 bike z50r haul. I'm looking to restore as many as three of them, with the 86 seemingly the most solid. Plus it's a classic gold wheel Honda dirt bike. This will be my first actual restoration:

(https://uploads.tapatalk-cdn.com/20170910/7f360a9aceb5c6610bcabe143c0c848e.jpg)

(https://uploads.tapatalk-cdn.com/20170910/c75b495d031162cd0b6f87f7720e77b2.jpg)


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Title: Re: 1986 z50r restoration hellride
Post by: bradj on Sep 10, 2017, 18:28:21
Rad
Title: Re: 1986 z50r restoration hellride
Post by: Hurco550 on Sep 10, 2017, 20:09:39
I'll watch

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Title: Re: 1986 z50r restoration hellride
Post by: clem on Sep 10, 2017, 22:23:51
Addicted.

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Title: Re: 1986 z50r restoration hellride
Post by: irk miller on Sep 10, 2017, 22:26:16
It's a hellride.   
Title: Re: 1986 z50r restoration hellride
Post by: clem on Sep 10, 2017, 22:41:42
Rust rida. All joking aside this is a cool pickup.

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Title: Re: 1986 z50r restoration hellride
Post by: cyclefreak on Sep 10, 2017, 22:58:50
http://www.hondaminitrail.com/z50.html
Whole bunch of new parts here if you need them.

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Title: Re: 1986 z50r restoration hellride
Post by: WhyNot on Sep 11, 2017, 06:36:22
Cool, wouldn't mind having one of those, myself.................
Title: Re: 1986 z50r restoration hellride
Post by: irk miller on Sep 13, 2017, 23:21:25
Started a tear down. The jug is actually good to go with a cleanup and hone. The head, on the other hand, I'm not so sure. One valve doesn't spring back. The cam looks good. Everything else with the motor is solid.

(https://uploads.tapatalk-cdn.com/20170914/a5cc130a0d01bd60196b7de4d61fe836.jpg)

(https://uploads.tapatalk-cdn.com/20170914/cfd9bf9a14f03e8c8035996faedf77d3.jpg)

(https://uploads.tapatalk-cdn.com/20170914/e069a204475fdc4798ac359ab4500357.jpg)



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Title: Re: 1986 z50r restoration hellride
Post by: Brodie on Sep 14, 2017, 00:46:06
I am in for sure. I love the old Z50s.
So many parts for these motors as well.

I have 2 Z50A and my brother has a Z50R. Best fun I have had on a bike was on these little things.
Title: Re: 1986 z50r restoration hellride
Post by: advCo on Sep 14, 2017, 01:30:47
I am envious of that haul. Those gold wheels are too legit.
Title: Re: 1986 z50r restoration hellride
Post by: canyoncarver on Sep 14, 2017, 17:44:14
Neat minis.
Title: Re: 1986 z50r restoration hellride
Post by: Tifun on Sep 20, 2017, 20:00:58
Fuck yeah


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Title: Re: 1986 z50r restoration hellride
Post by: irk miller on Sep 26, 2017, 01:46:55
Trying to see if I can save some covers.,,

(https://uploads.tapatalk-cdn.com/20170926/5d961cae6ce52d9143c5e91844a4cb44.jpg)

(https://uploads.tapatalk-cdn.com/20170926/e30a868ea58f91305172c8d82a30050e.jpg)


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Title: Re: 1986 z50r restoration hellride
Post by: irk miller on Jan 14, 2018, 21:20:31
This little guy has not been forgotten. Iím slowly collecting parts. The gold paint on these rims doesnít appear to be available in the US. Iíve been testing different off-the-shelf paints to find the right match, hoping I can find it that way without having to dig through catalogs of paint chips. Low and behold, I think Iíve found a decent match (old rim with tire, newly painted rim without):

(https://uploads.tapatalk-cdn.com/20180115/0872c0b85fa8f22050f9f300de27edfc.jpg)

Needles to say, HM rims in good shape are not as easy to find as I thought. For all the bikes I hauled in, thatís one part I have a short supply of.


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Title: Re: 1986 z50r restoration hellride
Post by: cxman on Jan 15, 2018, 07:29:42
you can get a complete top end jug piston rings cam head rockers gaskets everything for less than 100 bucks

its tough to spend a lot of time working on the old stuff steve brought some to barbers and sold them all either there or since
Title: Re: 1986 z50r restoration hellride
Post by: Ply318ci on Jan 19, 2018, 11:12:38
Awesome. Watching this one.


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Title: 1986 z50r restoration hellride
Post by: irk miller on Feb 01, 2018, 01:36:33
Starting rust removal and rebuilding forks.  Everything rusty is getting a bath in phosphoric acid.

(https://uploads.tapatalk-cdn.com/20180201/f3b7d9541e6369d3548230ad456b0006.jpg)

I worked the forks with Scotch Brite and phosphoric acid, then I followed up with a Simichrome polish...

(https://uploads.tapatalk-cdn.com/20180201/1810b5ba0417b66f68df1aaf3df5fc61.jpg)

(https://uploads.tapatalk-cdn.com/20180201/df897e5d9a17942ee4e707483eeb6ff8.jpg)

Also trying to rebuild the handlebar control switches...

(https://uploads.tapatalk-cdn.com/20180201/22eac9324d988863e18c6c4656c0818c.jpg)

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Title: Re: 1986 z50r restoration hellride
Post by: morgs88 on Feb 01, 2018, 02:30:21
I remember I had a yam pw 50!! My friend has the 50r his sister Iím sure had the 50r trike!! Hours of fun


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Title: Re: 1986 z50r restoration hellride
Post by: morgs88 on Feb 16, 2018, 02:12:21
You got these little beasts running yet?


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Title: Re: 1986 z50r restoration hellride
Post by: irk miller on Feb 16, 2018, 08:17:08
Not yet. Still collecting a few parts.   ;)
Title: Re: 1986 z50r restoration hellride
Post by: Maritime on Feb 16, 2018, 08:55:44
Not sure how I'm not yet signed up to get notices on this hellride but I am now
Title: Re: 1986 z50r restoration hellride
Post by: Brodie on Apr 19, 2018, 03:32:18
Done yet?
Title: Re: 1986 z50r restoration hellride
Post by: irk miller on Apr 19, 2018, 08:02:27
Haha.  It's still sitting in a prominent spot on the bench.  Four more weeks of school and then we roll.
Title: Re: 1986 (xr)z50r big wheel hellride
Post by: irk miller on Jul 23, 2018, 16:47:35
Okay.  So I went to Mid-O loaded with Z50r parts hoping to make some decent loot.  While I broke even in my investment, with three mostly complete bikes to spare, I walked away feeling like the market was just not strong enough to warrant putting the time and money into a restoration.  For one, guys don't seem to be interested in restorable parts.  They want parts already in good, original condition.  I say fuck that.  So, on that Saturday eve, I put out $10 for a crappy XR80 roller with the intention of converting this Z into a gold wheeled big wheel.  In the words of Mr E, "That's gonna be illegal grade fun."

Here we go with a big wheel conversion XR-Z50r:

First order of business is to trim the frame axle tube by 10mm on each side to accept the XR swing arm:

(http://www.dotheton.com/gallery/77150-230718141506-4128370.jpeg)

Next is to fit the front end.  Now, one way to do this is to swap stems.  Which, if any of you know, requires grinding through the welds and pressing the stem out of the bottom triple.  HAHAHA.  Too much work.  Instead, like a guy with a lathe, I decided to put a spacer on top of the upper race.  The spacer is machined to include the dust cap as well.  I figure, for a bigger person having the handlebars and upper triple spaced above the frame is not such a bad thing.  The spacer could go below the neck just as easily.

(http://www.dotheton.com/gallery/77150-230718141503-4124904.jpeg)

(http://www.dotheton.com/gallery/77150-230718141504-41261649.jpeg)

(http://www.dotheton.com/gallery/77150-230718141505-4127497.jpeg)

Here it is on legs. 

(http://www.dotheton.com/gallery/77150-230718141508-41292039.jpeg)

The rear shocks will need to be addressed.  The pick shows the rear wheel not dropping because of the jack stands, but regardless the rear needs lift.  Have two options: (1) 14 in shocks replace 12 inch shocks, or (2) the swing arm (lower) shock mounts move forward.  I'm leaning toward replacing the shocks since these are old and beat anyway. 
Title: Re: 1986 (xr)z50r big wheel hellride
Post by: The Jimbonaut on Jul 23, 2018, 17:53:33
Irk how many builds do you have going on at any one time?  I am literally staggered by your productivity and creativity, it's really impressive.  Plus, I want your garage space.  Please, and thank you.
Title: Re: 1986 (xr)z50r big wheel hellride
Post by: irk miller on Jul 23, 2018, 18:16:22
Irk how many builds do you have going on at any one time?  I am literally staggered by your productivity and creativity, it's really impressive.  Plus, I want your garage space.  Please, and thank you.

Haha.  Well, I'm a teacher on holiday, so if my kids aren't trying to kill themselves, I get to build shit.  I'm fortunately in a relationship where the female likes to do her thing unencumbered by her man as much as me.  Plus, I trained her going through a BFA and MFA in Studio Art, which translates to 18 hours a day in the studio.  ;) And right now I have 4 builds going on.  The chopper is almost done.  The trike is halfway done.  This is a slow burn.  Who knows, but it will go into the spring most likely.  The DR370 runs and rides, so really that bike is more dress-up than project build.  At least that's how I justify it.  The trike and this bike will either go to the kids or get sold at Mid-O next year so I can build something else.  ;D
Title: Re: 1986 (xr)z50r big wheel hellride
Post by: The Jimbonaut on Jul 23, 2018, 19:43:58
Haha.  Well, I'm a teacher on holiday, so if my kids aren't trying to kill themselves, I get to build shit.  I'm fortunately in a relationship where the female likes to do her thing unencumbered by her man as much as me.  Plus, I trained her going through a BFA and MFA in Studio Art, which translates to 18 hours a day in the studio.  ;) And right now I have 4 builds going on.  The chopper is almost done.  The trike is halfway done.  This is a slow burn.  Who knows, but it will go into the spring most likely.  The DR370 runs and rides, so really that bike is more dress-up than project build.  At least that's how I justify it.  The trike and this bike will either go to the kids or get sold at Mid-O next year so I can build something else.  ;D

Any time the wife shows even the vaguest interest in anything I thoroughly, unsubtly and dramatically encourage her to take it up as a hobby.  Pottery, oil painting, inter-continental travel...once she starts rolling her sleeves up and getting stuck in then it justifies me sloping off for days on end without fear of reprimand.  Even enrolled her into motorcycle lessons - she was doing great while things were carpark-bound but as soon as the instructor said it was time to get on the 600cc Shadows and go for a barrel down the highway she turned white and legged it.  So much for that. 
Title: Re: 1986 xr-z50r big wheel hellride
Post by: irk miller on Jul 23, 2018, 22:23:46
Got the Ď86 replica seat cover... because restorations.




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Title: Re: 1986 xr-z50r big wheel hellride
Post by: Hurco550 on Jul 23, 2018, 23:25:42
This. Is. Cool.

#midohio2019isgonnaberediculous

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Title: Re: 1986 xr-z50r big wheel hellride
Post by: Brodie on Jul 23, 2018, 23:59:50
Needs a 160cc engine and your set!
Title: Re: 1986 xr-z50r big wheel hellride
Post by: advCo on Jul 24, 2018, 09:51:59
Awesome.
Title: Re: 1986 xr-z50r big wheel hellride
Post by: cbrianroll on Jul 24, 2018, 11:27:31
That's awesome! I think I saw some of those on a Z50 website somewhere. My son is wanted to do it for a long time I'll have to show him these pictures.
Title: Re: 1986 xr-z50r big wheel hellride
Post by: JustinLonghorn on Jul 24, 2018, 11:35:24
yep.