Search found 446 matches

by bh.sprint
Mon Feb 16, 2026 8:01 pm
Forum: Two stroke
Topic: RECONDITIONED CRANK ASSEMBLIES
Replies: 5
Views: 4342

Re: RECONDITIONED CRANK ASSEMBLIES

Re the Lambretta conrods. I put Lambretta rods in the Arrow engine but it needed crank pins making which puts up the price . It did mean I could also have needle rollers in the little end which reduces the chance of them seizing up and that engine has been revved. Also had 110 m/m conrods in the MK2 ...
by bh.sprint
Mon Feb 16, 2026 7:44 pm
Forum: Two stroke
Topic: Front fork suspension caps
Replies: 10
Views: 6883

Re: Front fork suspension caps

Re the plastic suspension tops. Around the 1990's some one made a batch of both suspension tops and torque arm covers in plastic, they have the letters BDG on the inside. By the time I needed some they had mostly run out but a few were available , so I made a suspension top mould in alloy and found ...
by bh.sprint
Fri Dec 26, 2025 11:59 am
Forum: Two stroke
Topic: petrol tap thread
Replies: 12
Views: 8143

Re: petrol tap thread

1/4 bsp. tpi 19 diameter .518'' . BH.
by bh.sprint
Mon Nov 24, 2025 6:20 pm
Forum: Two stroke
Topic: Suzuki pistons
Replies: 8
Views: 7295

Re: Suzuki pistons

Attached picture of the Suzuki and Ariel pistons - gudgeon pin centres lined up. Its about 30 thou difference in the height. The skirt is shorter which in effect opens the inlet sooner so the engine revs more feely but has less torque in the lower rev band. I've taken the gasket out on one engine to ...
by bh.sprint
Wed Oct 22, 2025 8:35 pm
Forum: Two stroke
Topic: Rust in air box
Replies: 8
Views: 5815

Re: Rust in air box

Hi, I've tried waxoyl on top of primer sprayed into every crack/crevis I could find. It reduced the rust particles but not completely. There is a double skin at the top of the section with a compartment which it is difficult to get into but small bits of rust come out through a drain hole. Finally ...
by bh.sprint
Wed Oct 01, 2025 8:36 pm
Forum: Two stroke
Topic: Arrow Sport bad starting
Replies: 6
Views: 45936

Re: Arrow Sport bad starting

Some more information I should have added. I used a 26 m/m carb on the Arrow but there is a 28 m/m one available. Brian.
by bh.sprint
Wed Oct 01, 2025 8:33 pm
Forum: Two stroke
Topic: Arrow Sport bad starting
Replies: 6
Views: 45936

Re: Arrow Sport bad starting

Hello, These are the jets etc for the standard Leader/Arrow engine - pilot 30, main 130/140, needle jet 182 N-8, NEEDLE 5DP7, slide 2.0, air jet 0.5 Motocarb near Liverpool is the best place to go . If the engine has been altered it make need variations on the above. You will need a rubber adaptor ...
by bh.sprint
Tue Sep 30, 2025 7:30 pm
Forum: Two stroke
Topic: Arrow Sport bad starting
Replies: 6
Views: 45936

Re: Arrow Sport bad starting

Hello, The engine in the Arrow shown has alloy cyclinders and was mildly tuned by Fahron so uses slightly different jets in the Mikuni carb but I'll check what they should be in a standard engine and get back to you. Brian H.
by bh.sprint
Sun Aug 17, 2025 9:27 am
Forum: Two stroke
Topic: Dragonfly electronic ignition?
Replies: 3
Views: 8113

Re: Dragonfly electronic ignition?

Hi, Keith H has some experience of the Drags ignition.Try asking him. Brian H.
by bh.sprint
Sat Aug 09, 2025 9:50 pm
Forum: Two stroke
Topic: Two stroke oil
Replies: 10
Views: 32214

Re: Two stroke oil

Ariel initially recommended 25 to 1 but in later information recommended 32 to 1 of some oils. I've used 32 to 1 in my standard Leader of any of the major oil makes ie. Castrol, Putaline etc. I find semi synthetic gives less smoke and is not too expensive. .Brian H ps the engine has done 17,000 ...