my first bike H100A 1980, ratty racer. 2015 build pics (WIP)

[Iain.]

Highly reccomend going up two on the main jet, and swapping the plug out for one grade colder. Can then really spank it without it nipping up. Also, wemoto sell a refurb kit for that carb that isn't a lot of money at all.

Top work though

[RyanTZR125]

Failed the MOT on Friday. Stupid things, nothing I can't sort.

One issue was the enduro style rubber plate hanger was fouling the rear wheel.. Hence the new rear light set up. I had to cut the back of the seat to fit over the light, measured twice, three times. get the misses to double check and cut once
https://i3.photobucket.com/albums/y87/NitroCowBoy/BIKE/Honda%20rebuild%202015/photoshake_1432657041924_zpslkyxotwj.jpg
https://i3.photobucket.com/albums/y87/NitroCowBoy/BIKE/Honda%20rebuild%202015/photoshake_1432656047439_zps7tb5bmbc.jpg


The other issues where an iffy light switch, bit of WD40 sorted that.
and brakes, new shoes on the way
____________________
1980 Honda H100A, Cafe racer. (SOLD)
1998 Yamaha TZR 125 4HX.
1999 Yamaha R6 YZF

[RyanTZR125]

Cutting vinyl wrap, to match my bash, for the tan and seat....

https://i3.photobucket.com/albums/y87/NitroCowBoy/BIKE/Honda%20rebuild%202015/20150529_193545_zpsbrxtop04.jpg
____________________
1980 Honda H100A, Cafe racer. (SOLD)
1998 Yamaha TZR 125 4HX.
1999 Yamaha R6 YZF

[-Matt-]

[RyanTZR125]

[Just_James]

Done a really nice job with that!

Good luck with the MOT
____________________
Current Bikes / Projects: 1999 Rieju RS1 50
Previous bikes - 1986 DT125R (field bike), 1989 KX250, 1980 KX420 (with 500cc big bore), 1992 YZ250, 1988 KX500, 1989 XR250R, 1988 VFR400R NC24, 1999 Cagiva Mito 125, 2008 Rieju RS2 50 , 1993 Honda NSR 125

[stevo as b4]

Nice work indeed! Well done with the transformation into one of the nicest 100's I've ever seen!

Did you decide against the rear set's in the end? I still can't help but think that with those bars and std foot pegs/controls, that it must be a bit uncomfortable to ride?

[RyanTZR125]

[Rogue_Shadow]

Great Progress thread
Good luck with the MOT
Now stop it! I don't have any room for a second bike

[bypass2]

You done a really nice job there mate. Good Luck with the MOT.

[RyanTZR125]

https://i3.photobucket.com/albums/y87/NitroCowBoy/BIKE/Honda%20rebuild%202015/photoshake_1433235556561_zpso5f5xai3.jpg


She passed

Thank you all for the compliments
____________________
1980 Honda H100A, Cafe racer. (SOLD)
1998 Yamaha TZR 125 4HX.
1999 Yamaha R6 YZF

[RyanTZR125]

Dropped the engine out of my Honda today, after a weekend rideout to Ramsgate something went on the ride over, troubles getting into 2nd and 5th, with grinding noises, I managed to limp her home in 4th. The gearbox oil had metal flakes in as does the gearbox..

Start of a full strip and rebuild..

https://i3.photobucket.com/albums/y87/NitroCowBoy/BIKE/Honda%20rebuild%202015/11407037_10153300423714020_7999201328166657122_n_zps7piupyje.jpg
https://i3.photobucket.com/albums/y87/NitroCowBoy/BIKE/Honda%20rebuild%202015/10363819_10153300746179020_7409741370165223574_n_zpsoswftvte.jpg
____________________
1980 Honda H100A, Cafe racer. (SOLD)
1998 Yamaha TZR 125 4HX.
1999 Yamaha R6 YZF

[Just_James]

Gutted for you

Looks like you're on with it though, I wouldn't have the first idea what to do with all those cogs and stuff

Good luck with it
____________________
Current Bikes / Projects: 1999 Rieju RS1 50
Previous bikes - 1986 DT125R (field bike), 1989 KX250, 1980 KX420 (with 500cc big bore), 1992 YZ250, 1988 KX500, 1989 XR250R, 1988 VFR400R NC24, 1999 Cagiva Mito 125, 2008 Rieju RS2 50 , 1993 Honda NSR 125

[stevo as b4]

Once your gearbox cases are flushed out and any damaged gears or bearings are replaced, is the next post the one about an Athena 125cc big bore kit?

[RyanTZR125]

[A100man]

[pepperami]

Really sorry to see that cool little bike is not well
GWS cool little bike
____________________
I am the sum total of my own existence, what went before makes me who I am now!

[RyanTZR125]

Engine is stripped and crank cases have been split open, the culprit is the input shaft bearing has blown...

https://i3.photobucket.com/albums/y87/NitroCowBoy/BIKE/Honda%20rebuild%202015/11110965_10153315657609020_4867332826336758804_n_zps1gi6mpkm.jpg

Clean out the debris and as you see the outer race is still seated in the case, but the debris from the blown bearing has gouged and smashed some of the casing behind the bearing.

https://i3.photobucket.com/albums/y87/NitroCowBoy/BIKE/Honda%20rebuild%202015/11406908_10153315688424020_1559762523359539261_n_zpss28b7end.jpg

This is a picture of the same area, from the Haynes, showing the bearing in situ, there also looks to be some kind of pin in the center. That has been seared off on my casing, its the piece shown in the first picture

https://i3.photobucket.com/albums/y87/NitroCowBoy/BIKE/Honda%20rebuild%202015/1546016_10153315850039020_3493553644568926470_n_zpsoyrzpgue.jpg
____________________
1980 Honda H100A, Cafe racer. (SOLD)
1998 Yamaha TZR 125 4HX.
1999 Yamaha R6 YZF

[Just_James]

Eeesh, that doesn't look good

Fair play to you for getting in there and diagnosing it though!

Is that something that can actually be fixed?
____________________
Current Bikes / Projects: 1999 Rieju RS1 50
Previous bikes - 1986 DT125R (field bike), 1989 KX250, 1980 KX420 (with 500cc big bore), 1992 YZ250, 1988 KX500, 1989 XR250R, 1988 VFR400R NC24, 1999 Cagiva Mito 125, 2008 Rieju RS2 50 , 1993 Honda NSR 125

[RyanTZR125]

The outer race left in the casing can certainly be removed and replaced with a new bearing, I'm not too sure if the lack of the locating pin will affect the engine if rebuilt, I would guess it would be a weak point and blow bearings regularly as the input shaft has nothing to keep it central..
This is just my thoughts, I'm going to rebuild it and test the issue
____________________
1980 Honda H100A, Cafe racer. (SOLD)
1998 Yamaha TZR 125 4HX.
1999 Yamaha R6 YZF

[A100man]

I might be thinking along the lines of another casing from breakers and replace all the bearings. On the other hand you might get away with thorough degreasing patching alloy with chemical metal and a new bearing..

J
____________________
Now: A100, GT250A, XJ598, FZ750

Then: Fizz, RS200, KL250, XJ550, Laverda Alpina, XJ600, FZS600

[RyanTZR125]

On further investigation it seem the little pin that's sheared off is an oil feed for the input shaft gears... Not looking like it's fixable.. I will be looking for secondhand crank case or complete engine
____________________
1980 Honda H100A, Cafe racer. (SOLD)
1998 Yamaha TZR 125 4HX.
1999 Yamaha R6 YZF

[Just_James]

That's shit news mate, gutted for you!

I'm guessing not an engine that's going to be particularly easy to source either?

Maybe time for a power transplant? Make a positive from the negative
____________________
Current Bikes / Projects: 1999 Rieju RS1 50
Previous bikes - 1986 DT125R (field bike), 1989 KX250, 1980 KX420 (with 500cc big bore), 1992 YZ250, 1988 KX500, 1989 XR250R, 1988 VFR400R NC24, 1999 Cagiva Mito 125, 2008 Rieju RS2 50 , 1993 Honda NSR 125

[Matt B]

Sorry to so this, makes me sad
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stinkwheel: He had an animated .gif of a cat performing fellatio. It's not socially acceptable. It can have real life adverse effects on other people.

[RyanTZR125]