Trials Australia Forums

Hi,

I have a 158 framed 190 engined Bultaco Sherpa 250.

Looks Like this, only worse.



It's had a rough life! Note that part number on the side casing is how I identified the engine. I googled the number and some guy in spain is restoring the same engine number.

The main engine number on the bike is 811######which is gobbledygook.


Note rust flake in image... Plenty of that.


Anyway.

Stripped it down and there's a few nasties there.

Most pressing are these..

Engine casing holed due to chain off at some stage. It still holds oil and the oil doesn't seem water contaminated even after a pressure wash when everything els was water contaimated.

They are pretty tought these old bikes.



That side cover is busted as welll... Actually. EVERYTHING is busted. It's just degrees of BUSTED that I am workling with.

Should I try to weld... Obvioulsy replacing the side casing is one suggestion. Any others? Weld and machine the bearing again?

Another Engine problem is that the Kick starter seemed to be slipping. I didn't think it was clutch related due to it catching, holding until there wassome pressure then it would let go.

But, once I disconnected the clutch cable and had the engine up on the bench, it seems to be OK.... although I can't get enough hard pressure on the kick starter.

And then there's THIS
Nice crack.

It came apart properly when I took the front wheel off. The sleeve inside is still in there though.

My "Mate" Says he can weld it... But I'm not so sure about that. Maybe just a new one.

Every nut, bolt, washer spring and plastic has had the richard but I just want to get it going and do a running resto on it.

She's stripped back to the frame now and I am starting with some new rear shocks and a powder coat on the frame. Got some swingarm bushes on order. Have Tank Sealer ready to go too so any tips on using that would be much appreciated.

I have already sourced new engine bolts for it. Don't suppose there's a source for full rebuild stainless bolt sets for the whole bike. I know you can for Land ROvers....

Thanks in advance for any feedback and help.

I have had this bike since about 1993 and it's been stored since 1997 in a damp environ.

Cheers

Ian

What a headache, stored in a wet environment.....was it an anchor for your boat or what ?
No wonder its hard to find big rocks to ride over in Queensland, that bloody thing has crushed all of em.
is it really red paint, or someones blood all over it....
get in touch with the guy in Spain and see if he is looking for some NSNOS
reminds me of my missus before she had a couple of make overs spent heaps of money and I still gave her away

The good thing about Bultacos is that pretty much everything you need is available and they are virtually bullet proof. Over the years I have had various parts of Bultaco alloy welded by different welders and never had a problem. The two broken components you have are common issues and can be repaired. Parts can be obtained from Peter Schoene http://www.bultacoaustralia.com/ or Don Newell http://www.newellmotorcycles.com.au/Bultaco.htm
or from 'In Motion' in the UK http://www.inmotiontrials.com/ There is also a dedicated Bultaco forum on 'Trials Central'

Cheers Greg

Hi Ian. Your slipping kickstart would be the clutch slipping as they are a non primary kickstart on the Bultaco`s. If you pull the clutch in you can`t kick the engine over. It might just be not enough free play in the cable or not enough preload on the clutch springs or the clutch plates are worn. You will need to pull it apart and have a look. I also agree with Sherpa on the welding and the parts as well. They are very easy to work on. Graham.

Hi Ian,
John Tate from John Tate Automotive at Coopers Plains will be able to assist with repairing the casing and fork. He can also separate the tank and restore it. He mainly works on vintage motocrossers and I have seen him restore and repair bikes in far worse condition than yours!
Good luck

Funny you mention it. I did loan it to a deep sea rock breaking company for a short time there. Sorry to hear about the Missus. Put that one down to experience eh.

The clutch issue came about because I tried to kick it with the clutch in and out but maybe it's an adjustment thing. Moot point since I'm going to have to open the case up anyway.

I'm already on don and BA Xmas card list but thanks for the welding advice.

I can't wait to see what's inside


Cheers

Ian


Posts: 98
Joined: Fri Aug 06, 2004 8:38 pm
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Funny you mention it. I did loan it to a deep sea rock breaking company for a short time there. Sorry to hear about the Missus. Put that one down to experience eh.

The clutch issue came about because I tried to kick it with the clutch in and out but maybe it's an adjustment thing. Moot point since I'm going to have to open the case up anyway.

I'm already on don and BA Xmas card list but thanks for the welding advice.

I can't wait to see what's inside the donk

Here's what's left after the weekend.



Cheers and thanks

Mrapocalypse wrote:Funny you mention it. I did loan it to a deep sea rock breaking company for a short time there. Sorry to hear about the Missus. Put that one down to experience eh.

Cheers and thanks

Good to see you have a sense of humour...
You will get lots of help here,

Hey Mr Apocalypse,

It may be a trick of the light, but I reckon you have a bent frame.

The top tube looks bent at the back of the headstock gusset as if it has been ridden into a brick wall. This will steepen the head angle and compromise the lazy and predictable handling that these tractors - oops sory, bikes! - are renowned for.

Have a look at the down tube too, that will have taken some stick.

You dont need a frame specialist to sort it, just a competent fabricator/welder with a bit of sympathy and a good eye..

Good luck.

Joe.

Or 15 pound lump hammer... :)

Paul Mac