Benelli Dynamo Scrambler Restoration

Two wheels good.

Benelli Dynamo Scrambler Restoration

Post by wi11iam @ Tue Aug 14, 2018 10:56 pm

I think this started before ID had demonstrated the fallacy of trying to make old Italian bikes work again but it definitely goes under ‘drunk in charge of eBay app’.

I don’t have a bike licence, I don’t really want one and have never seen the fascination of transport that falls over on its own when you’re not paying attention but the idea of a pit bike got lodged in my head, a cheeky bid later and it was mine.

It’s sat in the garage for 9 months whilst I’ve spent as much again on parts, mostly postage ‘cos all the spares appear to be in America but I glibly think I’ve enough missing bits to make it work so time to get on with the strip down.

This is likely to be a long and sorry tale but someone on here suggested a build thread in the last plea for lurkers to contribute so here goes. I’ll invariably be needing advice, encouragement and tolerance as this takes a lot longer than I hope, costs more and I then fall off it.

Image
As bought.
Research (that I’d not done before buying) reveals it’s a 65cc two stroke made very late sixties or early seventies of which there may only be a few hundred left and mostly sold in the States. That will explain the difficulty in finding spares here then.

Onto the disassembly.
Image
Image
Image
Image

Frame etc has been stripped and is primed for paint. Shiny bits are in the process of being polished if salvageable else to be rechromed (only the exhaust primary on that list so far) with another pile to be replated.

The plan is to get the whole thing back together as a rolling bike and then start on the engine. It’s all come apart relatively easily so far but for the wheels which had stuck to the tyres.

So far so good but all wiring had been helpfully trimmed off so that’ll be a challenge - that and the missing cylinder head revealing a seized piston. But the engine is part two.
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Re: Benelli Dynamo Scrambler Restoration

Post by Pigeon @ Wed Aug 15, 2018 12:26 am

Has it even got any wiring so as you'd notice? Aren't the two wires attached to the ignition coil about 50% of the total?

At least with the head off you're well set to pour a bit of diesel in it every day while you sort the non-engine stuff out.

Looks fun, anyway. Look forward to seeing how you get on with it.
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Re: Benelli Dynamo Scrambler Restoration

Post by Dirk @ Wed Aug 15, 2018 6:49 am

Well done for posting anyway.

Now you have to finish or be proven to have less determination than ID
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Re: Benelli Dynamo Scrambler Restoration

Post by Deuteronomy @ Wed Aug 15, 2018 9:59 am

Excellent stuff, keep posting.
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Re: Benelli Dynamo Scrambler Restoration

Post by Il Duce @ Wed Aug 15, 2018 10:09 am

Dirk wrote:Well done for posting anyway.

Now you have to finish or be proven to have less determination than ID


I didn't really finish mine did I?
Also he has a red tool CHEST so don't expect the numerous cock-ups I made.

Anyway, go for it Willy!
Only one piece of advice, which is now scrawled in pencil on the wall above my work bench:

"DO IT RIGHT THE FIRST TIME"
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Re: Benelli Dynamo Scrambler Restoration

Post by Dirk @ Wed Aug 15, 2018 10:16 am

True,
I'll correct my post to

Now you have posted, you have to finish or be shown to be as incompetent as ID
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Re: Benelli Dynamo Scrambler Restoration

Post by S1K @ Wed Aug 15, 2018 10:30 am

I've got that Halford's socket set too.

Don't just pour diesel down the bore, use every different type of oil you can find, WD40 onwards.
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Re: Benelli Dynamo Scrambler Restoration

Post by Il Duce @ Wed Aug 15, 2018 10:33 am

Dirk wrote:True,
I'll correct my post to

Now you have posted, you have to finish or be shown to be as incompetent as ID


“It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat.”
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Re: Benelli Dynamo Scrambler Restoration

Post by Dirk @ Wed Aug 15, 2018 10:49 am

Il Duce wrote:
Dirk wrote:True,
I'll correct my post to

Now you have posted, you have to finish or be shown to be as incompetent as ID


“It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat.”

Excellent example of hyperbole>actuality. h>a

:clap:
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Re: Benelli Dynamo Scrambler Restoration

Post by Il Duce @ Wed Aug 15, 2018 10:54 am

Dirk wrote:
Il Duce wrote:
Dirk wrote:True,
I'll correct my post to

Now you have posted, you have to finish or be shown to be as incompetent as ID


“It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat.”

Excellent example of hyperbole>actuality. h>a

:clap:


You weren't there man... you weren't there!
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Re: Benelli Dynamo Scrambler Restoration

Post by tanglerat @ Wed Aug 15, 2018 2:12 pm

Good man Willy.

Ignore Dirk, ID has been a restro-virgin marvel on these pages. I've now got high hopes for you too.
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Re: Benelli Dynamo Scrambler Restoration

Post by Careless Whisperer @ Wed Aug 15, 2018 3:01 pm

This has got to stop before we all end up with a pile of old bike bits in the corners of our sheds.

Anyway Willy, a duff engine eh? Well, sounds like you need an upgrade...
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Re: Benelli Dynamo Scrambler Restoration

Post by manfromdelmonte @ Wed Aug 15, 2018 3:30 pm

Excellent, keep us updated and post lots of pictures, especially of you falling off.

What parts have you bought?
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Re: Benelli Dynamo Scrambler Restoration

Post by Dirk @ Wed Aug 15, 2018 3:31 pm

Careless Whisperer wrote:This has got to stop before we all end up with a pile of old bike bits in the corners of our sheds.

Anyway Willy, a duff engine eh? Well, sounds like you need an upgrade...

V8?
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Re: Benelli Dynamo Scrambler Restoration

Post by Careless Whisperer @ Wed Aug 15, 2018 3:35 pm

Dirk wrote:
Careless Whisperer wrote:This has got to stop before we all end up with a pile of old bike bits in the corners of our sheds.

Anyway Willy, a duff engine eh? Well, sounds like you need an upgrade...

V8?

I was thinking of the mower in the background, but yeah, a V8 would be a faster way from highway to headstone...
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Re: Benelli Dynamo Scrambler Restoration

Post by wi11iam @ Wed Aug 15, 2018 5:28 pm

The lawnmower’s engine is earmarked for a go cart if I can find a gearbox or something to change the plane of output rotation through 90 degrees. Or I could just fix it and flog it which is more likely. Ok. Fix it then fail to give it away.

Missing bits appear to be stuff that was easily taken off and used on other bikes or got in the way - foot rests, pedals, levers, lights. That does mean they’re available from other failed salvage/restoration attempts though. eBay has been the answer so far.

More updates and photos then when I do something to it.
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Re: Benelli Dynamo Scrambler Restoration

Post by Pigeon @ Wed Aug 15, 2018 5:39 pm

wi11iam wrote:The lawnmower's engine is earmarked for a go cart if I can find a gearbox or something to change the plane of output rotation through 90 degrees.


Sierra diff?
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Re: Benelli Dynamo Scrambler Restoration

Post by S1K @ Wed Aug 15, 2018 5:43 pm

Pigeon wrote:
wi11iam wrote:The lawnmower's engine is earmarked for a go cart if I can find a gearbox or something to change the plane of output rotation through 90 degrees.


Sierra diff?

Surely far too heavy.
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Re: Benelli Dynamo Scrambler Restoration

Post by manfromdelmonte @ Wed Aug 15, 2018 6:48 pm

wi11iam wrote:More updates and photos then when I do something to it.


In the meantime maybe you can tell us something about the Caterham?
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Re: Benelli Dynamo Scrambler Restoration

Post by wi11iam @ Sun Sep 02, 2018 1:17 pm

Not a lot to report other than polishing and spending more money on bits and pieces.

Hubs, head and carb body back from the soda blaster. It’s returned some areas back to as new but where there was tarnish it’s too gentle to remove that so some ‘patina’ remains.

Image

Primary and handlebars being rechromed which will take 3 weeks. Seat cover replacement quote £300 and they can’t do it until November.

Lots of polishing. How come making something shiny appears to require making everything else near black and greasy? Tip to others. Don’t do this at the kitchen table. It will not be appreciated.

Image
Image

Paint, bearings, rear shocks (not quite the same as original) and tyres bought/on order. I went for knobblier tyres (Bridgestone Trail Wings if you’re that interested) over road tyres as a nod to its name, not that I intend to go off road.

Lots of WD40 into the piston cup. Working theory is that previous owner didn’t put two stroke oil in a petrol top up so it seized. TBC.

Image

And CBT booked with the proviso I don’t buy another bike.
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Re: Benelli Dynamo Scrambler Restoration

Post by S1K @ Sun Sep 02, 2018 1:32 pm

Those shiny bits are very impressive. A domestic dishwasher is also a very effective degreaser, but again it's something best done with prior permission or when you won't be found out.

Good luck with freeing up the piston and with the CBT.
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Re: Benelli Dynamo Scrambler Restoration

Post by Strawman @ Sun Sep 02, 2018 1:39 pm

Plus Gas can work when WD40 doesn't

https://www.amazon.co.uk/English-Abrasi ... B0001P02RK
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Re: Benelli Dynamo Scrambler Restoration

Post by Tokyo Sexwale @ Sun Sep 02, 2018 2:37 pm

wi11iam wrote: TBC.

TDC I think.

hahaha
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Re: Benelli Dynamo Scrambler Restoration

Post by Il Duce @ Mon Sep 03, 2018 10:21 am

Here's the foolproof method:

Plus gas tin in one hand, blowtorch in the other.....
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Re: Benelli Dynamo Scrambler Restoration

Post by minimoog @ Mon Sep 03, 2018 12:09 pm

wi11iam wrote:Seat cover replacement quote £300


What are they re-covering it with, mink?
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Re: Benelli Dynamo Scrambler Restoration

Post by wi11iam @ Mon Sep 03, 2018 12:29 pm

4 hours labour @£55/hr and then the vinyl and VAT

Given it’s the biggest part and I can’t sew I’m resigning myself to the cost.
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Re: Benelli Dynamo Scrambler Restoration

Post by Dirk @ Mon Sep 03, 2018 12:49 pm

wi11iam wrote: I can’t sew

Can't your wife/girlfriend?

<Checks title>
Ah, bike restoration. Don't worry, I've answered my own question
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Re: Benelli Dynamo Scrambler Restoration

Post by Il Duce @ Mon Sep 03, 2018 3:11 pm

Dirk wrote:
wi11iam wrote: I can’t sew

Can't your wife/girlfriend?

<Checks title>
Ah, bike restoration. Don't worry, I've answered my own question


Dirk, it's not that we couldn't get one if we wanted one, it's just that they're very expensive and that lathe/pillar drill/welder is not going to buy itself is it?

Anyway, what would you prefer, a resto thread or a thread about a relationship?
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Re: Benelli Dynamo Scrambler Restoration

Post by Dirk @ Mon Sep 03, 2018 3:25 pm

Resto obv. This is CTF, not mumsnet
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Re: Benelli Dynamo Scrambler Restoration

Post by Damien Thorn @ Tue Sep 04, 2018 7:56 am

wi11iam wrote:And CBT booked with the proviso I don’t buy another bike.

When's the CBT wi11iam? Have you done it yet? Have / had you ever ridden before?
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