Search found 31 matches

by Duncan J Robertson
Mon Jun 08, 2026 9:43 pm
Forum: For sale/wanted - Parts, and those bits and bobs
Topic: Arrow crank locking tool
Replies: 0
Views: 36

Arrow crank locking tool

Has anyone got a crank locking tool for sale or hire, Draganfly are out of stock.
If you also have an extractor for the flywheel end covers, I would also be interested, but Draganfly do have these in stock.
I could make them but it will save a lot of work, here's hoping
Duncan
by Duncan J Robertson
Thu Apr 09, 2026 7:46 pm
Forum: Four stroke
Topic: clutch tabs - ask a stupid question.....
Replies: 13
Views: 2390

Re: clutch tabs - ask a stupid question.....

Blue Locktite (medium strength) works, But I like a tab washer, easy to use and they do what is asked of them.
by Duncan J Robertson
Thu Apr 09, 2026 3:29 pm
Forum: Four stroke
Topic: 4G Mk1 rockers
Replies: 6
Views: 1329

Re: 4G Mk1 rockers

It never occurred to me the holes would be at an angle, on checking the four of mine drilled with a single hole, they were all at an angle.
Thanks for the head up on this.
Looking at the picture from Paul, your two rockers on the left are from a 4G and the one on the right is a MK1
My assumption for ...
by Duncan J Robertson
Thu Apr 09, 2026 12:25 pm
Forum: Four stroke
Topic: 4G Mk1 rockers
Replies: 6
Views: 1329

Re: 4G Mk1 rockers

Thanks for your efforts Paul, much appreciated.
Thought there should only be a single oil hole in the rocker, my machines top end was obviously built from a box of bits.
I have a set of 8 with no holes, the same profile as the 4G ones in the picture, going to get 4 of them drilled
by Duncan J Robertson
Wed Apr 08, 2026 7:21 pm
Forum: Four stroke
Topic: 4G Mk1 rockers
Replies: 6
Views: 1329

Re: 4G Mk1 rockers

Thanks Paul
What does P19 refer to, I can't find any links.
The Ariel manual !948-1958 shows a central drilled hole, also details of how to solve over oiling etc. so I assume they should all be centre drilled, and no others
by Duncan J Robertson
Wed Apr 08, 2026 5:26 pm
Forum: Four stroke
Topic: 4G Mk1 rockers
Replies: 6
Views: 1329

4G Mk1 rockers

Can anyone advise which are the correct rockers for a MK1 with regard to the oil holes drilled, or otherwise.
I have 5 variations on mine out of the 8, is this a record for different rockers.

No holes
Drilled center rib
Drilled center rib and short side
Drilled center rib and long side
Drilled ...
by Duncan J Robertson
Sun Mar 29, 2026 7:27 pm
Forum: Ariel Talk
Topic: Square four Mk1 rocker
Replies: 18
Views: 26240

Re: Square four Mk1 rocker

A bit late on this, but I have just had a stuck inlet valve on my MK1.
Having rebuilt the engine bottom up, I started having problems with number 2 firing or so I thought, it proved to be the inlet valve sticking open.
On inspection the rocker was different from the others, did not have any oil ...
by Duncan J Robertson
Sat Feb 22, 2025 5:14 pm
Forum: Four stroke
Topic: MK1 Square 4 oil tank
Replies: 6
Views: 6456

Re: MK1 Square 4 oil tank

Thanks Chris
More than happy to buy this.
Sure with a bit of TLC I will get it to fit.
email me directly and I will arrange. djrobertson56@btinternet.com
Regards
Duncan
by Duncan J Robertson
Thu Feb 20, 2025 5:38 pm
Forum: Four stroke
Topic: MK1 Square 4 oil tank
Replies: 6
Views: 6456

Re: MK1 Square 4 oil tank

Thanks for looking Roger.
I found it on Cheffin's auction site as well.
Anyway, engine now rebuilt, bottom up, will keep looking for the correct oil tank.
My next post, has anyone got one.
by Duncan J Robertson
Thu Feb 20, 2025 12:47 pm
Forum: Four stroke
Topic: MK1 Square 4 oil tank
Replies: 6
Views: 6456

Re: MK1 Square 4 oil tank

Roger, thank for the reply.
Engine no. TM435
Frame. SV429
Reg NLY 937