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Blood Sweat Tears and Grease => Projects => Restorations => Topic started by: HansS on May 16, 2018, 08:09:15

Title: Ducati 500 GTL 1975 Resto
Post by: HansS on May 16, 2018, 08:09:15
Hi.
Lets start with a OOPS. What did I do.

I didn't mean to buy this one it just happend.
A couple of years a go I found an ad for this bike. But someone snatched it right in front of me. That someone happend to be a friend and my former boss.
Anyway yesterday he came and asked me if I still was interested in it.
I said yes, if the price is right.
Of course the price was and here I am with a new bike in the house.

I'm going to do a gentle restoration. I will try to save the paint since it's the original and there are no dent just some minor chips and some scuff marks in places.
Everything else is going to be torn down and restored.

 
Title: Re: Ducati 500 GTL 1975 Resto
Post by: irk miller on May 16, 2018, 08:16:27
Nice.  How hard are those side covers going to be to find?  I bought that tank at a Barber swap a couple years back for too much money and it turned out to be a dud.  So much braze was everywhere and it had a few pounds of Bondo. 
Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on May 16, 2018, 10:47:09
Found a pair on ebay and a rear light and licence plate bracket.

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Title: Re: Ducati 500 GTL 1975 Resto
Post by: spotty on May 17, 2018, 02:55:16
and just as a matter of interest, an XS650 motor pretty much fits straight into one of those, it was a common conversion in australia where they sold quite a few of them, shortly followed by quite a few of them blowing their delicate little italian hearts out

you end up with good italian looks, handling and brakes with the reliability of a japanese motor
Title: Re: Ducati 500 GTL 1975 Resto
Post by: The Limey on May 17, 2018, 03:43:45
XS650 and reliable in the same sentence?  Its relative, i suppose.

It's a lovely old thing.  The styling of the engine brings to mind the olde Aerial Square 4.
Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on May 17, 2018, 05:22:02
It's fun. Everybody seams to hate this Ducati. Even Ducati them selfs. ;D
Well I'm going to try to get it running and have it driving. I have read up on it and it needs a lot of servicing according to the owners manual.
And yes this engine has some issues, and yes it is the engine that made people think Ducatis where unreliable.
We will see how it goes. As a mechanical design engineer specialized in engines and engine design, it's a beautiful engine and the details are just awesome. that goes for the whole bike.

Spotty you are sent to the bench. Basta! ;)
I would never put a Japanese engine in a Ducati.
But if it's a Bimota then it's OK with a Japanese engine in the frame.

 
Title: Re: Ducati 500 GTL 1975 Resto
Post by: stroker crazy on May 17, 2018, 07:06:44
The Ducatista despise the 500 but they generally have no personal experience of the model.

Once the engine glitches are sorted it's a very capable machine.

Crazy
Title: Re: Ducati 500 GTL 1975 Resto
Post by: Pete12 on May 17, 2018, 09:15:10
XS650 and reliable in the same sentence?  Its relative, i suppose.

It's a lovely old thing.  The styling of the engine brings to mind the olde Aerial Square 4.
That's a bit harsh Limey, XS650's didn't handle particularly well, but the motors were as reliable as anything you could find...
Title: Re: Ducati 500 GTL 1975 Resto
Post by: innovativems on May 17, 2018, 15:29:17
That's a bit harsh Limey, XS650's didn't handle particularly well, but the motors were as reliable as anything you could find...

Agreed xs650 motors are spot on reliable


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Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on May 17, 2018, 20:01:06
Oops. So I took it apart.
Haven't seen anything that is really broken.
Some minor things on the frame need to be addressed. Someone has been welding some nuts on the frame for the luggage rack.
The chain guard has a crack in it. And the stand has a part broken off. So from now on it's mostly cleaning parts.
Big tumbs up.👍

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Title: Re: Ducati 500 GTL 1975 Resto
Post by: spotty on May 17, 2018, 21:00:41
no offence intended, just looking into my crystal ball to see an oily version of the future.......

seriously i have all respect for someone persevering with obscure italian machinery, i did my riding apprenticeship on crappy old vespas and lambrettas which were unreliable enough to start with, then start throwing tuning parts at them and make sure you've always got the money in your pocket for a tram ride home.....

a friend of mine has an obsession with similarly obscure spaghetti burners, he has quite a few tiny little 50s parilla's and the like as well as a morini camel, a 60s alfa Gulietta and the rarest of the lot a fire captains alfa 4WD form the 50s, it looks like a tiny little land rover but bright red with a stinking hot alfa twin cam in it
Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on May 17, 2018, 21:13:53
Got you!
I know exactly what you meant.
As a engineer, just looking at Italian engineering you are astonished how nice everything looks. Sure some times it doesn't work. But damn it looks good.
I done my share of bad engineering at work, trying out new ideas doesn't always work out as intended.


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Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on May 19, 2018, 22:32:56
Started kleening parts. And made a stand so I can start assembling it.
Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on May 20, 2018, 13:54:59
Making a pair of side covers. One side done, one to go.
Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on May 23, 2018, 14:55:02
Im trying to source missing parts. Got a really nice rear light and license plate holder from Germany today.
Need a rear light. I'll see if I can find one on eBay or maybe I can find a reproduction. It's from a Aprillia!!!
Also trying to find the paint code, not as easy as I thought. I left the gas tank at a automotive paint store to se if they can match the color.
Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on Jul 13, 2018, 18:49:36
Got the frame back from powder coater.
Looks really nice. Semigloss black.
Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on Oct 07, 2018, 12:01:56
Made a pair of excenters  for the swingarm.

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Title: Re: Ducati 500 GTL 1975 Resto
Post by: Nuked_114 on Oct 18, 2018, 04:04:05
I would definitely love to get my hands on an old Ducati but man are they becoming expensive. It might have its problems but I'd way rather ride this than a brand new one :)
Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on Dec 10, 2018, 21:42:51
Slow progress. Forks are pulled apart and waiting for parts.

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Title: Re: Ducati 500 GTL 1975 Resto
Post by: doc_rot on Dec 11, 2018, 01:38:12
nice work on those sidecovers
Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on Jan 03, 2019, 06:31:58
Thanks.
Yes they turned out really nice.

Got some nice parts for the 35mm Marzocchi fork from Ben @classicandvintagesuspension.co.uk


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Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on Jan 08, 2019, 08:04:23
Forks done.
Title: Re: Ducati 500 GTL 1975 Resto
Post by: spotty on Jan 08, 2019, 18:22:02
looking good and also well done on being allowed to have motorcycles inside the house, i'm barely allowed to have brand new parts in any area that is tiled, carpeted or floorboarded (unless i don't tell her of course)
on the other hand i used to know a guy who lived on his own who had a house full of old brit bikes and the place was filthy, smelly and dangerous so maybe not surprising he was on his own , and after he'd ripped off the required amount of mates he was truly on his own ( yes, scabba i'm looking at you , dodgy little bastard, using second hand bearings and pistons to 'rebuild' an engine is not the way to go)
Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on Jan 17, 2019, 18:43:36
My house, so I do as I want. Also why the bikes are in the hallway is because the garage is filled with a car. Well actually a car in pieces and a complete workshop with tig, mig, gas welder, plasma cutter, sheet metal break, pipe bender, blasting cabinet and the body and the old frame are hanging from the ceiling. One assembled frame on the floor and one frame hanging from the wall. So not so much space left. I'm also doing welding, grinding and sheetmetal work in the garage so it's extremely dirty. Then there is the metal workshop which is too small to fit a bike in. This is where the milling machine, drillpress and the lathe are and lots of tools are.
So the hallway is the perfect place.👍

So anyway, fixed one of the brake calipers. Two parts was missing from kit for the other caliper so it has to wait until I get some new ones.

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Title: Re: Ducati 500 GTL 1975 Resto
Post by: spotty on Jan 17, 2019, 20:30:12
you are indeed a lucky chap as well as obviously talented and for both those reasons i hate you... ;D
Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on Jan 18, 2019, 02:34:08



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Title: Re: Ducati 500 GTL 1975 Resto
Post by: TranceMachineVienna on Jan 18, 2019, 04:22:02
amazing project keep it coming!
Title: Re: Ducati 500 GTL 1975 Resto
Post by: advCo on Jan 18, 2019, 11:23:53
My house, so I do as I want. Also why the bikes are in the hallway is because the garage is filled with a car. Well actually a car in pieces and a complete workshop with tig, mig, gas welder, plasma cutter, sheet metal break, pipe bender, blasting cabinet and the body and the old frame are hanging from the ceiling. One assembled frame on the floor and one frame hanging from the wall. So not so much space left. I'm also doing welding, grinding and sheetmetal work in the garage so it's extremely dirty. Then there is the metal workshop which is too small to fit a bike in. This is where the milling machine, drillpress and the lathe are and lots of tools are.
So the hallway is the perfect place.👍

Looking great. Whats the car?  ;D
Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on Jan 18, 2019, 18:33:59
It's a Lotus Europa S2 from 1969.
Here is a link to a the forum where I post updates.
https://rejsa.nu/forum/viewtopic.php?t=23608


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Title: Re: Ducati 500 GTL 1975 Resto
Post by: stroker crazy on Jan 18, 2019, 18:38:24
Not a lot of room left for bikes!

Crazy
Title: Re: Ducati 500 GTL 1975 Resto
Post by: Popeye SXM on Jan 19, 2019, 09:40:58
L.O.T.U.S - Lots Of Trouble Usually Serious
Great project. Looks like you need a bigger garage. Love the Ducati too
Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on Jan 19, 2019, 11:56:32
Thanks. Yes its a great project. It's going slow at the moment. It's been in the family since 1986. It's been driven alot. But I finally realized it needed to be restord.

Well back to the Ducati.
All the aluminium parts are heavily oxidized so I'm doing some glas bead blasting. Here are a before and after picture of the speedo drive.

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Title: Re: Ducati 500 GTL 1975 Resto
Post by: Turnturtle on Jan 19, 2019, 17:56:57
You made up those two Lotus frames from scratch? That's very impressive!
Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on Jan 19, 2019, 18:05:34
Yes. Alot of measuring. 18 hours to weld one up.
But it was a nice project.
One frame was made for a friend but he gave up with his car so I'm stuck with an extra frame.
Maybe I will use it for a race car I'm collecting parts for.
But first some personal things need to be solved.


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Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on Jan 29, 2019, 17:14:45
New parts picked up. Packed in strange pizza boxes.🤔


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Title: Re: Ducati 500 GTL 1975 Resto
Post by: HansS on Feb 15, 2019, 06:03:57
A month ago when I went through the front calipers two parts was missing from the one of the repair kits. So new part was ordered.
Yesterday I got a box filled with new parts. :)
Also I changed my mind as I had cheated with the one caliper I did. The pistons was a bit pitted, not too much, but enough to be annoying. So decided to correct it.
New pistons for the calipers was ordered too.
Fun fact, 2 new pistons weighs 47grams, 2 old 132grams. Saving 85grams per caliper.
Soon I have  to change tread from restorations to cafe racer ;D