Search found 129 matches

by Ivor Collins
Tue Jan 09, 2024 10:07 am
Forum: Two stroke
Topic: Arrow engine tools
Replies: 7
Views: 586

Re: Arrow engine tools

Maybe locktite has been used on the centre bearing but there are two stages to separating the crank halves from each other. Firstly by taking the tension off the cap head and secondly continuing to unscrew it until resistance it felt once again when the tapers can be forced apart. If you have done b...
by Ivor Collins
Fri Jan 05, 2024 7:56 pm
Forum: Two stroke
Topic: Arrow engine tools
Replies: 7
Views: 586

Re: Arrow engine tools

There is a drawing I could look out if that would help you?
by Ivor Collins
Wed Dec 27, 2023 10:52 am
Forum: Two stroke
Topic: Rebuilding Arrow Engine
Replies: 7
Views: 597

Re: Rebuilding Arrow Engine

Richard
Suggest that, after inspection, you put it back together and get accustomed to a little piston slap at tickover. If it runs okay, it’s unlikely to lead to any failure and, if it’s intolerable, easy to lift off the barrel off for rebore at a later stage.

Ivor
by Ivor Collins
Tue Dec 26, 2023 11:02 pm
Forum: Two stroke
Topic: Rebuilding Arrow Engine
Replies: 7
Views: 597

Re: Rebuilding Arrow Engine

Have you considered piston slap as the source of the clatter? It’s very common to have some level of piston slap on these engines and would seem to fit the description you gave.
Ivor
by Ivor Collins
Sun Dec 03, 2023 8:40 pm
Forum: Two stroke
Topic: Carburettor leaking fuel
Replies: 8
Views: 723

Re: Carburettor leaking fuel

Ah, so what you need to do is fit a clear plastic tube to the projecting pilot jet after removal of the pilot jet cover nut. The height of fuel in the tube should be seen to match with the pip on the cover.
by Ivor Collins
Sun Dec 03, 2023 9:52 am
Forum: Two stroke
Topic: Carburettor leaking fuel
Replies: 8
Views: 723

Re: Carburettor leaking fuel

Hi Paul
I assume you know that the ‘pip’ protruding from the float bowl cover is the correct fuel level and you should be adjusting to suit?
by Ivor Collins
Sat Jul 22, 2023 3:19 pm
Forum: Two stroke
Topic: Tiger Cub rear sprockets?
Replies: 4
Views: 567

Re: Tiger Cub rear sprockets?

You can buy platewheel sprockets of the size you want to fit to an old cast iron carrier which can then be either bolted or welded together.
by Ivor Collins
Thu Feb 16, 2023 11:13 pm
Forum: Two stroke
Topic: Still wont Start!
Replies: 17
Views: 2208

Re: Still wont Start!

Glad to hear your sorted out now, well done for preserving

So am I correct in thinking that in summary, you got the cylinder pressure up to 100psi and it still wouldn’t start but then fitted the new carb and hey presto!
by Ivor Collins
Thu Jan 26, 2023 7:46 am
Forum: Two stroke
Topic: Still wont Start!
Replies: 17
Views: 2208

Re: Still wont Start!

The first puzzle is that low compression figure. It won’t start until you get it closer to 100 psi But what technique are you using to take the measurement? The reading should be cumulative so, with the throttle open, continue kicking it over until the pressure no longer rises before taking a measur...
by Ivor Collins
Wed Jan 18, 2023 8:42 am
Forum: Two stroke
Topic: Stepped piston rings
Replies: 5
Views: 518

Re: Stepped piston rings

Am I right in assuming you’re trying to fit stepped rings to ‘original’ Ariel pistons? I hadn’t thought about it before but guess it’s an option if the thickness matched the groove exactly If this is the case, as already suggested, why wouldn’t you remove some of the step from the ring rather than a...