Search found 432 matches

by malmac
Tue Nov 24, 2020 2:27 am
Forum: Vintage (1948-1969) Motorcycles
Topic: let the games begin - R69s engine rebuild
Replies: 51
Views: 4178

Re: let the games begin - R69s engine rebuild

Bit more work on the honing mandrel today.
Here is first view of the inside mechanism.
MAL_1108.jpg
Here is the 2nd view of the inside workings.

MAL_1109.jpg
The mechanism assembled, but still missing the drive yoke.
MAL_1107.jpg
Mal
by malmac
Mon Nov 23, 2020 2:22 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: let the games begin - R69s engine rebuild
Replies: 51
Views: 4178

Re: let the games begin - R69s engine rebuild

The tweaking of the crank has stalled for the moment. I got to a point where I thought I needed to regroup and let the situation soak for a bit. Here is the problem I face. MAL_1076.jpg So I have turned my attention for the moment to the Sunnen hone. Step one was to calculate the dimensions I needed...
by malmac
Mon Nov 23, 2020 2:12 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: How I solved the differential timing issue
Replies: 4
Views: 728

Re: How I solved the differential timing issue

Interesting post. Thank you for showing us what you did.

These are the adjustments that promise to allow your bike to run the way it was designed to run.


Mal
by malmac
Mon Nov 23, 2020 2:05 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: Deep oil pan cartridge filter adapter
Replies: 3
Views: 192

Re: Deep oil pan cartridge filter adapter

I knew Peter quite well over a 20 year period and have one of his oil filter kits. It has not yet been fitted to my engine and I am interested to know if the people you know have had any undesirable consequences to fitting the oil filter to their bikes? Your design seems a lot easier to manufacture ...
by malmac
Mon Nov 16, 2020 12:19 am
Forum: Vintage (1948-1969) Motorcycles
Topic: let the games begin - R69s engine rebuild
Replies: 51
Views: 4178

Re: let the games begin - R69s engine rebuild

Work on the crank is progressing. The alignment offset was .65mm when I started and now is well within the .2mm. The next challenge is to get the runout at either end of the crank to within specs. Currently front stated at .06 and I have reduced that to .05, so still lots to go to be less than .02mm...
by malmac
Sun Nov 15, 2020 12:34 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: Old dirty r69 - from basket to bike.
Replies: 51
Views: 7314

Re: Old dirty r69 - from basket to bike.

Interesting read and it is amazing to see what is happening behind closed doors.

I also like the choice you made to do the mechanicals and for the time being delay the cosmetics.
Makes your bike great to ride and with some of it's life story showing.

Mal
by malmac
Sun Nov 15, 2020 6:42 am
Forum: Vintage (1948-1969) Motorcycles
Topic: let the games begin - R69s engine rebuild
Replies: 51
Views: 4178

Re: let the games begin - R69s engine rebuild

Well been away for a couple of weeks and got back into the shed today. Time to do some more work on the engine. Two main issues on the plate. 1. Sorting out the reproduction crank and 2. Honing the bores for the over sized cam followers. 2. The parts for the honing system are in the mail so this wee...
by malmac
Tue Oct 27, 2020 1:00 am
Forum: Vintage (1948-1969) Motorcycles
Topic: Rear Shock Diagnosis and Recommendation
Replies: 7
Views: 246

Re: Rear Shock Diagnosis and Recommendation

Mal The Ikon shocks are made in Albury . I have been using their shocks on my race bikes for many years . If and when you need a set . I have a mate who has an account with them and gets trade price .I also have a NOS set of Koni that I bought a long time ago . Never fitted them to my R69s as the B...
by malmac
Mon Oct 26, 2020 3:47 pm
Forum: Vintage (1948-1969) Motorcycles
Topic: Rear Shock Diagnosis and Recommendation
Replies: 7
Views: 246

Re: Rear Shock Diagnosis and Recommendation

well there you go. I didnt know Ikon shocks were made in Australia.

I know where to go when I need some.


Mal

Toowoomba
Australia
by malmac
Sat Oct 17, 2020 7:42 am
Forum: Vintage (1948-1969) Motorcycles
Topic: Clutch compression ring - home made
Replies: 5
Views: 404

Re: Clutch compression ring - home made

Always another turn in the road, another challenge to over-come. I am sure you will find a solution. There are other options than helicoil - look around, no need to rush.


Mal