The Holy Grail...resto

[090]

Dad snagged a motor, frame and swing arm for a twin pipe. He has a donor bike for most of what is missing, plus i have sourced a few things as well.
Here are a few pic's of the motor. Weird old thing thats for sure. the head is way to big, the barrel is ridiculously heavy and some of the fins are part of the cases 
This is an early motor as it is made of magnesium, where as the later TP's were aluminum. The cases and side covers are rough as guts as they were sand cast ( oooh, worksy!). Still typically bullet proof though.
The clutch cover had a fibreglass repair which was pulled out. It will be repaired properly.

[motomaniac]

Beaudifull! Love the gearbox lid!!

[090]

Gearbox inspection in ten minutes flat! Selector forks in your hand in twelve!
The only issue at the moment is that there are no selector forks. The seller neglected to point that out when we (dad) paid the premium he asked.
I have since emailed him and to his credit has apologized and said he will find the parts. I will also be trying to source as well as this wont be a long term project as dad is already stuck into it. No doubt it will be finished and sorted for nats.

[paul]

now you got me thinking

[shortshifter]

Excellent Brad,I always enjoy your "blow by blow" restos with plenty of good quality pictures.These models seem overall smaller than the later models or is that just an optical illusion?Are the front ends the same measurements as later models?

[firko]

Good one Brad. The old bike classes wouldn't be in so much trouble if more later era riders like yourself and Mainline looked outside of the circle towards the already existing older classes instead of lobbying for newer divisions. Nearly every younger bloke I know of who's undertaken a pre 75 or pre 65 bike build has become engulfed in the project and started to understand the history and culture of our sport so much more.
You're so lucky to have a dad who can share your passion. You fellas are going to have a ball with this project.

[Bamford#69]

Hi
When you find someone to cast up an alloy barrel for your 250 twinport , put me down for one as well, then I can use the cast iron one I've got, as it should be used , as a bloody boat anchor, they couldn't have made it heavier if they tried to.
I was told by an "expert" that Twinport engine #'s starting with 100*** were the magnesium (Electron) case motors , my one has a 200*** number like yours but has an aluminuim case, any other experts out there with relevant info ?

[090]

Excellent Brad,I always enjoy your "blow by blow" restos with plenty of good quality pictures.These models seem overall smaller than the later models or is that just an optical illusion?Are the front ends the same measurements as later models?

Thanks mate. The motor maybe a little smaller but the chassis is almost identical to a sidepiper. Even the forks are the same. the motor is the most unique part of the bike. There will be alot more manufacturing with this one as they are fairly rare. A side pipe rod kit will be made to fit which in turn allows the side pipe piston (which is the same as all) as well.
 

You're so lucky to have a dad who can share your passion. You fellas are going to have a ball with this project.

I am very lucky for sure Firko. I love every bit of it. We are into it already with parts coming from Les, hyping up George Mackensie to do all the machining etc and have pulled the motor to bits.

[firko]

Here's one for sale on Marks Swapmeet.http://www.vintagemx.us/cgi-bin/largephoto.cgi?C=WfSjgR2njGUVdXPP

[shortshifter]

Grab that from the swapmeet site as its also on US ebay for a buy it now of $11500.

[shortshifter]

Hamster get back to work.

[Ji Gantor]

Well done Brad and Bert,
Yet another bike you can roost us all with.
Happy resto.

Ji

[090]

I bought a set of Morads for a more authentic look and dad has painted up the hubs, so they are off to the wheel builder today. I have sourced parts from S.A and after ringing around the world found a source in Holland. Luckily dad speaks Dutch as the guy doesn't speak any english and has all we want for the motor.
The third photo is the #62 which i am certain is the year of manufacture as it is a magnesium motor which is the early type, going to alloy later on.

[GMC]

Yes Brad, your pipes are under way, should be ready for the platers sometime in the next 2 weeks, if I can remember which bits to put together to make a twin port pipe

[090]

Holy crap!
Thats why you make the big bucks