Pre-65 Bikes

where is a good place to buy 40 hole alloy rims 21" and 18"

does anyone know the difference between the teardrop tanks offered by armac, upb and terry weedy besides price?

Who supplies trials alloy tanks for cubs & c15 bikes. Is there an other bike tank that fits these frames, that looks neat ? what are you all using ?.

Does anyone know what weight difference there is between alloy and steel rims? I'm thinking the standard 21/18" trials sizes. Hopefully someone might have some lying about they could weigh! Thanks!

I'm in the middle of rebuilding an M20 BSA engine for a customer.I bought a big end assembly made by Alpha in Dudley,(From another supplier)on assembling it I found it was going to need altering - because the flywheel tapers were badly machined in the flywheels themselves.(The conrod had too much side clearance with the previous big end) machining tapers is not an easy task but when I called Alpha they offered to sort it out for me so I posted it to them on monday at 4pm.It came back in the post today at 10am,with the requested 17thou removed,it now has 10thou of side clearance as it should.All done FOC. They didnt even charge me postage - the crank is now built up and t…

I have just fitted a Honda TL125 Kehein carb to my Tiger Cub, it runs OK on tick over but as soon as I roll of the throttle, after giving it some throttle! it pops back through the exhaust, at the moment its 98 main and 35 pilot,with the needle raised one from the bottom,do I need to go bigger on the main or raise the needle to the max! I thought that the TL 125 carb just bolted on with the standard jets and that was it. My Cub is the 250cc Serco conversion.

Looking at rotating kickers for C15 or Cubs with the clevis pin type mount, everything I see is massive looking steel mounts. Would a similar massive aluminium (6061) mount be adequate? I suspect there is some reason I do not see them in aluminium. Thanks!!

Hi, Will kindly ask if any of you do know the mesaurements of threads at the back end of Amal MK1 body? I do need to extend the rear end of the carb by ~3" (have seen such solutions somewhere, made of nylon..on a Bantam) Do you think any tube ( for other assemby..?) with matching threads inside is available? I might can use a std part, Polished Alloy Bellmouths, but dont know if its perfect to seal the air boot to a chone. BR,

Hi all Anybody know a good starting point with jetting on a Mk 1 Amal carb , its to fit a Villiers 250cc 32A motor Cheers

I have a Amal 622 Mark 1 on my cub what pilot do the gurus out there recommend Vinnie

I have a 1962 C15 that I am converting to trials, I have junked the worn concentric carb and have bought an Amal 622 and a 1.5" long inlet manifold extension, it will be running PVL. Is anyone else running a 622 on a C15 and can they tell me what jetting they use and what needle position they find best?

Hello People. What is the best jetting options for an Amal Mk1 626 concentric going to be fitted to a Villiers 250. Cheers. Paul.

Many British bikes fitted with the Amal carburettor use a round screw on air filter which usually has either a paper or gauze filter element. Which type is best though, some of the gauze ones look rather poor (you can see straight through them) the paper ones I suppose may get wet when it rains via the holes in the metal outer so which type is the better option?

Can anyone help please, I have an Amal concentric carb, looks like a Mk 1.5 concentric with the choke lever, the body has a cast number 625 with L1 stamped to the left of it and number 1 below the 6. Can't work out from the Amal website exactly which type it is 1600 or 1900 to order spares. Any advice gratefully received

Hi there im rebuilding a Matchless G250 for trials riding it had a 28mm monoblock carb on as standard road trim what size should i buy a new concentric carb for trialing cheers andyd

Just fitted an Amal stay up float kit to the concentric carb on my bike but now it floods as soon as the fuel is switched on, have tried to lower the float level as well as checking the viton tipped float needles operation but without effecting a cure. Any ideas please.

Hi, Will kindly ask if any of you know of a supplier who offers Amal MK1 main jets in sizes above 110 but leaner than 120? Cheers

Hi, I have a 1961 BSA C15 with an Amal MK1 carb. The bike runs ok but you have to be very gentle when you open the throttle from tickover or it will stall and it is a bit lumpy on 1/4 throttle. The carb is a 622. 3 1/2 slide. needle on middle groove. 110 main jet. 105 needle jet. Pilot air screw about 3/4 turns out. Pilot bush fitted, I believe this is a 25. The plug is black, not wet and never fouls (touch wood) Will be grateful for any advice or opinions. Cheers.

Hi, Will kindly ask if any of you have found softer spring rates vs std for Amal MK1 throttle? BR, Pat

Has anyone tried one of these new carbs from AMAL yet, if so how do they perform? I need to get a carb sorted for the new Ariel 500cc short stroke project and was wondering whether to go with one of these rather then spend ages tweaking a Villiers. If anyone has tried one of these on an Ariel, any chance you could let me know the jetting? Thanks all