Long Long Project......Montesa

dr nosh

dr nosh

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Started in 2012 as a frame and and 5 boxes of bits. Oh I do like a jigsaw puzzle.

Fitted new steering lock with key, powder coated frame, new bearings throughout - wheel hubs, engine, gearbox, swinging arm bushes, fork bushes, taper roller steering head bearings, spent hours refurbishing the fibreglass seat/fuel tank cover, then painted, correct decals applied, 2 pack clear coated, new seat foam and cover, refinished engine in satin black, honed bore, made lots of parts in stainless and polished, made lots of specialised fasteners in stainless and polished (eg M7 threads), made a set of handlebar shims 1" down to 7/8", vapor blasted all exposed alloy, new wheel rims with stainless spokes. Fitted ignition case, gearbox and clutch case breathers, all tubed up in clear to under the tank. You will have to be in some deep do do's to drown that engine.

Last problem ....getting a spark. Simple wiring harness made up for ignition and horn only. No spark, tested coil primary and secondary resistances, all good. Finally tracked down to....new NGK plug, new NGK plug cap.....the rubber grommet on the open end was preventing the plug from making contact no matter how hard I pushed....removed the grommet...felt the plug snap home and bingo....a spark.:thumby:
 

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I'm not a fan of old trials bikes but I do appreciate the time, effort and money people put in to them, that is very nice indeed.
 
I have no particular interest either, but as I’ve said before, I’m in awe of people who can do this.

Amazing


Sent from my iPhone using Tapatalk
 
That's a beauty !!

By the sound of it, that could so easily have become another bike that was 'broken' for parts - all the bits sold off and the bike just sort of disappear. Great that it's all back together and looking so good.

If It was mine I would now become all precious about it and I wouldn't want to get it dirty...:blast
 
That's a beautiful job dr nosh, really beautiful :beerjug:

I'm curious about the breathers and routing, was that normal for Montesas? On the Bultaco I did the way they came out of the factory was to just tuck them into the barrel.........

<a href="https://andressotoscastello.smugmug.com/Bultaco/n-k954th/i-mx2BMWq/A"><img src="https://photos.smugmug.com/photos/i-mx2BMWq/0/b0837d37/XL/i-mx2BMWq-XL.jpg" alt=""></a>

Andres
 
Looks too good to give it a battering in a trial.
Thoughts on breathers- If you're going to ride through deep water take them well up in to fresh air because the water will cool the engine, making it breath in, pulling water in if it's below the surface.
The Yam TTR 250s carb breathers are Tee'd, one running down to drain, one running up to breathe if the down one is under water.
 
jonnie comet said:
That's a beauty !!

By the sound of it, that could so easily have become another bike that was 'broken' for parts - all the bits sold off and the bike just sort of disappear. Great that it's all back together and looking so good.

If It was mine I would now become all precious about it and I wouldn't want to get it dirty...:blast
Click to expand...

When I bought it, the plan was basically 'throw' it together and ride it in my local trials group. However, so many bits were missing/knackered/worn out/bent/twisted, that stopped that plan.

The attraction and potential was it has a V5 and matching engine/frame numbers.

Its unlikely that I will be throwing it at trees or rocks just to add a bit of patina.

You might see it up for sale with the spares (complete engine as well)
 
Outtomunch said:
That's a beautiful job dr nosh, really beautiful :beerjug:

I'm curious about the breathers and routing, was that normal for Montesas? On the Bultaco I did the way they came out of the factory was to just tuck them into the barrel.........

<a href="https://andressotoscastello.smugmug.com/Bultaco/n-k954th/i-mx2BMWq/A"><img src="https://photos.smugmug.com/photos/i-mx2BMWq/0/b0837d37/XL/i-mx2BMWq-XL.jpg" alt=""></a>

Andres
Click to expand...

That is also nice Andres .

(Bit like a mutual appreciation society this afternoon):D

The gearbox breather vents into the air filter box.
The ignition flywheel vents up and under the tank.
The primary/clutch breather vents up into the main frame top tube.

I used clear tubing in order to be able to see if anything had got in there.

The idea was to get the vent as high as possible to prevent anything getting sucked in.

I dont know if that was how Montesa arranged them originally, but to me it was a practical solution.

I would say that your breather wedged in the barrel fin could take water in quite easily if you ended up in a deep puddle or bog.:eek:
 
My old Montesa
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d to the Fantic

Crock of shite compared to the Fantic :D
 
Dr Nosh

Very fine looking twin shock... you’ve done a wonderful job on that.
 
dr nosh said:
Timolgra.

Thats a nice clean example.

What year?
Click to expand...

Can't remember but around 1980, what I can remember though was looping the bastard in a deep gully, it landed nose first and shattered the front wheel hub!
Had to drag the piece of shite all the way back to my van....
Oy Mark Earthmover, I know you laughing :D
 
Me on my Bultaco too many years ago.

My sis-in-laws husband has a mint Bultaco 250 (first of the plastic tank ones) that he bought new. He sold it, bought it back, sold it again and bought it back and restored it to perfection. Problem is it’s too good to ride now without destroying all the hard work. :blast
 

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dean0n0 said:
............
Thoughts on breathers- If you're going to ride through deep water take them well up in to fresh air ................
Click to expand...

dr nosh said:
That is also nice Andres .

(Bit like a mutual appreciation society this afternoon):D

The gearbox breather vents into the air filter box.
The ignition flywheel vents up and under the tank.
The primary/clutch breather vents up into the main frame top tube.

I used clear tubing in order to be able to see if anything had got in there.

The idea was to get the vent as high as possible to prevent anything getting sucked in.

I dont know if that was how Montesa arranged them originally, but to me it was a practical solution.

I would say that your breather wedged in the barrel fin could take water in quite easily if you ended up in a deep puddle or bog.:eek:
Click to expand...

Very good points and one's I'd not really considered, just copied period photos (all from Spain where we know it doesn't rain, except on the plain ;) )......... Time to have a re-think :thumb2

Andres
 
Broxhead common?

Never owned one but have very fond memories as a teenager watching these wonderful machines competing at trials on the old military laundry site at Broxhead Common, Hampshire in the late sixties and seventies. I can clearly remember being mesmerised as the riders romped up the old concrete staircase with ease. I had a couple of local older friends who rode Cota and Sherpa models and the fierce but friendly brand rivalry. When one lad turned up with an Ossa with it's white and green tank everyone was agog and wondered if it was the future, obviously not as I didn't see another. It's a pleasure to see some surviving now as they were thrashed and discarded when the Japanese models came along and out performed the traditional brands.
 
Lovely job
This was my old montessa, sold about 4yrs ago
SNB12271_zps85ba8a14.jpg
 
Nippy Normans supply Touratech, Wunderlich, Desert Fox and many other makes of accessories.
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