Search found 815 matches

by koncretekid
Wed Sep 18, 2019 3:29 pm
Forum: Project bikes
Topic: B25/TR25 Land Speed Project
Replies: 87
Views: 15035
Flag: Canada

Re: B25/TR25 Land Speed Project

Just got back from the Bonneville Salt Flats "World of Speed" event where we set an SCTA national record of 95.168 mph. I actually made a speed of 97.xxx on the down run in mile 2, but the bike quit in the 2nd mile on the back-up run due to a clogged fuel filter. I thought I had blown the record att...
by koncretekid
Tue Sep 03, 2019 11:54 am
Forum: Tech
Topic: Lithium-ion battery pack
Replies: 6
Views: 353
Flag: Canada

Re: Lithium-ion battery pack

Interesting, but what would be the best combination to run a "total loss" system with Boyer or similar ignition? Is 11.1 volts sufficient or would 14.8 be better and would 14.8 volts harm any of the components? I also note that the charger is only rated to charge up to 13.2 volts, so would it just c...
by koncretekid
Mon Sep 02, 2019 10:15 pm
Forum: Int BSA Rally and other meetings
Topic: National bsa Rally South Australia
Replies: 8
Views: 1029
Flag: Canada

Re: National bsa Rally South Australia

Retirement is for OLD FARTS Even worse I am yet to find a retired person who has managed to get a single bike together. Retirement is a figment of a demented imagination. I'm busier now than when I was working. Although it may not be fair to say that since I retired early at the age of 62 due to a ...
by koncretekid
Wed Aug 28, 2019 12:47 pm
Forum: Tech
Topic: B44 Victor frame drawing
Replies: 9
Views: 574
Flag: Canada

Re: B44 Victor frame drawing

Thanks for the replies. As for the correct exhaust, I bought a new one from a reputable vendor that didn't fit my Colorado B44, so I bought a used one from BSA Unit Singles - - that fit. I've bought another one on ebay, but that didn't fit either. I have a nice new one that might be B25 high right s...
by koncretekid
Tue Aug 13, 2019 11:59 am
Forum: Tech
Topic: B44 Victor frame drawing
Replies: 9
Views: 574
Flag: Canada

Re: B44 Victor frame drawing

Thanks, although the "dry build" in this case would have to wait quite a while because I need a proper exhaust pipe (nearly impossible to find the correct one) as well as a muffler. So I went ahead and sand blasted and painted the frame because I was bored, and impatient -- it's only paint and I can...
by koncretekid
Mon Aug 12, 2019 1:17 pm
Forum: Tech
Topic: B44 Victor frame drawing
Replies: 9
Views: 574
Flag: Canada

B44 Victor frame drawing

I'm building another Victor using leftover parts including a 1970 B25 frame which has the muffler mount on the wrong side for the B44 motor. I can cut that bracket off and move to the right side, but exactly where is it located dimensionally? Is it exactly the same position as the B25, or is it high...
by koncretekid
Sat Jul 20, 2019 10:57 am
Forum: Tech
Topic: Final Drive Sprocket
Replies: 21
Views: 1259
Flag: Canada

Re: Final Drive Sprocket

I simply purchased a deep socket, 1-1/2" I think, cut it in half, and welded a piece of steel pipe about 2" long in the middle. It is shown here along with some other interesting tools.

download/file.php?id=8404&mode=view

Tom
by koncretekid
Sat Jul 20, 2019 1:45 am
Forum: Project bikes
Topic: Typhoon BX60V
Replies: 71
Views: 12500
Flag: Canada

Re: Typhoon BX60V

They look great! And it's a good idea to do the final tightening in the swingarm and front forks. As for stand, I just use an old swingarm mounted in a bench vise with the actual axle with spacers to be able to fix the position of the hub so it can't move during the tightening phase.Worst part for m...
by koncretekid
Sat Jun 29, 2019 11:04 pm
Forum: Off topic
Topic: Crankshaft experiment
Replies: 165
Views: 28818
Flag: Canada

Re: Crankshaft experiment

Good luck with your trial run, Jack. 120 mph should be a rush in any case, especially on a 1/10th mile course! How about bringing it to Loring next month for a little extra room to go and mostly, to stop? I'll be there with some spare time, as I'm only bringing the Bridgestone, and I'm not planning ...
by koncretekid
Mon Jun 24, 2019 11:46 am
Forum: Tech
Topic: 8inch front brake
Replies: 16
Views: 2186
Flag: Canada

Re: 8inch front brake

How does using 2 clock springs change the operation of the brake? As long as the cable is free to move, not tied to the frame or the front fender (which may look nicer), it will pull equally on each brake arm - - "for every action there is an equal and opposite reaction" is a principle of physics I ...
by koncretekid
Tue Jun 18, 2019 12:53 pm
Forum: Project bikes
Topic: Typhoon BX60V
Replies: 71
Views: 12500
Flag: Canada

Re: Typhoon BX60V

Just a heads-up about the carburetor mounting on the B50 (unless you're using Fuel injection!) - - the right rear downtube on the OEM B50 frame always fouls the carburetor unless you're using stock Amal carb with no manifold extension. You might want to fit the cylinder and head on the motor in the ...
by koncretekid
Fri May 10, 2019 2:38 pm
Forum: Off topic
Topic: Star
Replies: 210
Views: 27271
Flag: Canada

Re: Star

ask me what job is on now........ beat <216 Mikuni 34 flatslide? I just put one on TR250 Land Speed bike. It started and ran, but needs the "Beat touch" to get it tweaked. I'm enclosing my dyno to keep the neighbors happy (read: "keep the wife happy"), so I'll be putting the TR250 on, maybe next we...
by koncretekid
Sun May 05, 2019 3:28 pm
Forum: Tech
Topic: megacycle 541x4 degree options
Replies: 9
Views: 1478
Flag: Canada

Re: megacycle 541x4 degree options

Trimming the edges of the valves, chamfering them on their top edge (intake), and cutting them deeper will work. Also, make sure the intake valve is not hitting the edge of the fire ring (top of cylinder liner), as this will make the same clicking noise. If so, the fire ring can be chamfered slightl...
by koncretekid
Tue Apr 30, 2019 8:27 pm
Forum: Tech
Topic: B50 doesn't like tickling
Replies: 6
Views: 1102
Flag: Canada

Re: B50 doesn't like tickling

Ed, Welcome to the forum. I recognize your name from Britbike. I'm wondering if you're getting some leakage past the float valve for some reason.Do you have a bowl with the bottom jet access plug you can drill and tap for a small spigot and plastic tube like a battery breather tube, just to see if p...
by koncretekid
Sun Apr 28, 2019 4:30 pm
Forum: Off topic
Topic: Star
Replies: 210
Views: 27271
Flag: Canada

Re: Star

I was getting ready to guess 175 kg, when I realized I was too late. Anyway, I was looking at your front brake stay (anti-dive control rod) and I think it may twist it's mounting bracket on the fork leg. I had a brake stay lug on a S*zuki 4ls fork tube break off during braking into a corner, so ther...
by koncretekid
Fri Apr 19, 2019 12:57 am
Forum: Project bikes
Topic: Project Mail from Beat
Replies: 203
Views: 44458
Flag: Canada

Re: Project Mail from Beat

We have it so easy, especially in Colorado. After the initial pain of getting an unregistered bike registered, all I have to do is send in $48 per year and they send me a new sticker for my license plate! On two of my bikes, I have vintage plates that cost something like $200 for 5 years. In Nova Sc...
by koncretekid
Wed Apr 10, 2019 10:20 pm
Forum: Project bikes
Topic: B25ss Goldstar.
Replies: 5
Views: 1041
Flag: Canada

Re: B25ss Goldstar.

You might want to read this from the Britbike forum:
http://www.britbike.com/forums/ubbthrea ... rks#UNREAD
Tom
by koncretekid
Wed Apr 10, 2019 2:04 am
Forum: Project bikes
Topic: Project Mail from Beat
Replies: 203
Views: 44458
Flag: Canada

Re: Project Mail from Beat

Maybe you could just borrow a better front wheel and brake from another bike (B50 8" tls?) to get thru inspection?
Tom
by koncretekid
Sun Apr 07, 2019 9:46 pm
Forum: Tech
Topic: 1000-Series 2/4-stroke Concentrics
Replies: 85
Views: 7025
Flag: Canada

Re: 1000-Series 2/4-stroke Concentrics

Thanks for the explanation. For what it's worth, I get 53 cfm at 6000 rpm, as the motor is only inhaling 3000 times per minute at 6000 rpm.
Tom
by koncretekid
Sun Apr 07, 2019 6:02 pm
Forum: Tech
Topic: 1000-Series 2/4-stroke Concentrics
Replies: 85
Views: 7025
Flag: Canada

Re: 1000-Series 2/4-stroke Concentrics

Magnetoman, When you say depression, do you mean an increase in vacuum or a decrease in vacuum? You state the flow bench pressure is 7" H2O, is that positive or negative? In other words are you sucking thru the carb or blowing? I'm also wondering about the 7" H2O, as the vacuum created by the downst...
by koncretekid
Fri Apr 05, 2019 3:33 pm
Forum: Project bikes
Topic: Project Mail from Beat
Replies: 203
Views: 44458
Flag: Canada

Re: Project Mail from Beat

Add about 20mm to the length of each brake arm. As long as your drum is well fitted to the shoes, you will then be able to lock up the front wheel easily. You may also need to find or make a new front brake cable with heavier inside cable and better outside sheath. I used an old S*zuki front brake c...
by koncretekid
Tue Apr 02, 2019 3:53 pm
Forum: Parts & Bikes wanted
Topic: B50 rear fender
Replies: 3
Views: 647
Flag: Canada

Re: B50 rear fender

I have a red one if you're interested. Shipping would be expensive.
Tom
by koncretekid
Tue Mar 26, 2019 3:37 pm
Forum: Project bikes
Topic: Hammer of the Gods - B50SS Project
Replies: 143
Views: 25433
Flag: Canada

Re: Hammer of the Gods - B50SS Project

When you replaced the main bearing in the gearbox, did you remember to install the shim behind it (part number 71-1271)? Also, did you use the post '69 shift plate and corresponding shift fork (has the turned down barrel to allow further engagement of 2nd gear into the sleeve gear)? There is also th...
by koncretekid
Thu Mar 21, 2019 4:10 pm
Forum: Tech
Topic: megacycle 541x4 degree options
Replies: 9
Views: 1478
Flag: Canada

Re: megacycle 541x4 degree options

Start by getting the mixture correct, around 12 to 14 is fine. If it is a little rich, it won't hurt, but try not to go over 14. Set the ignition timing at around 32-34 degrees. Just for starters, I would make the exhaust pipe quite short, around 23", and then make some 2" extensions you can try up ...
by koncretekid
Sun Mar 17, 2019 4:03 pm
Forum: Tech
Topic: megacycle 541x4 degree options
Replies: 9
Views: 1478
Flag: Canada

Re: megacycle 541x4 degree options

With flat followers, the valves will hit each other, as the effect of the flat tappet is to open the valve sooner and close it later. But you can get Megacycle to grind the tappets at 1-1/8" radii which will give you more duration and overlap, but measure very carefully for valve interference. Some ...
by koncretekid
Sun Mar 10, 2019 2:07 pm
Forum: Parts & Bikes wanted
Topic: billet rocker oil feed pipe
Replies: 2
Views: 648
Flag: Canada

Re: billet rocker oil feed pipe

Just saw your post, Mike. I made another 10 or so and consigned them to Peter Quick at "BSA Unit Singles", see above link. My machinist just retired and sold his equipment, so the ones that Peter has may be the last of them.
Tom
by koncretekid
Fri Mar 08, 2019 1:25 am
Forum: Tech
Topic: Timing B50 with X4 Megacycle and STK010 Ignition
Replies: 2
Views: 840
Flag: Canada

Re: Timing B50 with X4 Megacycle and STK010 Ignition

You mentioned that you had welded up part of the combustion chamber and that you have a squish band of .7-.73mm (about .028"), I am surprised that with the 92mm bore that your compression is only 10.5 to 1. So the top of your piston must be chopped or your valve clearances to the piston are quite la...
by koncretekid
Tue Feb 26, 2019 9:09 pm
Forum: Off topic
Topic: Star
Replies: 210
Views: 27271
Flag: Canada

Re: Star

Beat,
I like your single sided swingarm. What is the wheel and what is the axle size that it can handle the side load?
Tom
by koncretekid
Tue Feb 26, 2019 3:13 am
Forum: Project bikes
Topic: BSA B50T from Trial to Race bike
Replies: 25
Views: 3058
Flag: Canada

Re: BSA B50T from Trial to Race bike

Those are great numbers! What bikes do you have to race against and what tracks will you race at? I think you'll love the torque and handling of your B50. I know my road race B50, which didn't have that kind of horsepower, was faster than I was able to take advantage of. I am better off in a straigh...
by koncretekid
Fri Feb 22, 2019 3:09 pm
Forum: Project bikes
Topic: B44 scrambler
Replies: 4
Views: 1053
Flag: Canada

Re: B44 scrambler

With the B44, you don't need the breather spigot, but make sure the inspection covers are vented type (they have small holes in them) to allow for expansion of the air inside. The B50 had unvented inspection covers. Beautiful job! Is the swingarm custom made or aftermarket? What is the muffler? Tom
by koncretekid
Fri Feb 22, 2019 2:54 pm
Forum: Off topic
Topic: Star
Replies: 210
Views: 27271
Flag: Canada

Re: Star

I see you're using a right hand chair. Will the exhaust pipe be an issue for the "monkey?"
Tom
by koncretekid
Thu Feb 21, 2019 4:32 pm
Forum: Tech
Topic: Electric Start
Replies: 623
Views: 110208
Flag: Canada

Re: Electric Start

Beat, I do think that a compression release would do wonders to help get rotational momentum into the flywheel before releasing the compression release. Another thing to try is to just put the bike in gear and back it up against compression. Then put it back in neutral and hit the starter button. Th...
by koncretekid
Sun Feb 17, 2019 2:39 pm
Forum: Tech
Topic: Electric Start
Replies: 623
Views: 110208
Flag: Canada

Re: Electric Start

Congratulations, Beat! Hard work and perseverance pays off. What are you going to do for your next trick?
Tom
by koncretekid
Thu Feb 14, 2019 11:23 pm
Forum: Project bikes
Topic: BSA B50T from Trial to Race bike
Replies: 25
Views: 3058
Flag: Canada

Re: BSA B50T from Trial to Race bike

Thanks,
I'll be interested to see the results of the dyno testing. The seat looks great.
Tom
by koncretekid
Thu Feb 14, 2019 2:51 pm
Forum: Project bikes
Topic: BSA B50T from Trial to Race bike
Replies: 25
Views: 3058
Flag: Canada

Re: BSA B50T from Trial to Race bike

Very nice looking bike. I would be interested in your combustion chamber modifications as well as rocker arms and valve angles.

I note you do not have a seat in place. A Matchless G50 seat looks nice on a race bike, if you don't have one yet.

My shop has never been that clean!

Tom
by koncretekid
Sun Feb 10, 2019 3:07 pm
Forum: Off topic
Topic: Star
Replies: 210
Views: 27271
Flag: Canada

Re: Star

Thanks for the information on the welding. My current TIG welder is a $500 Thermal Arc DC only with no foot pedal. I did learn to weld steel tubing as thin as .062" wall, but with some (many) issues. Of course it won't weld aluminum so I will have to buy the more expensive AC type to do so. If you h...
by koncretekid
Fri Feb 08, 2019 11:13 pm
Forum: Off topic
Topic: Star
Replies: 210
Views: 27271
Flag: Canada

Re: Star

Beat, I just noticed your build yesterday and I'm very impressed. I've been looking for an older motor like yours just to get started on another project. I'm also trying to get set up to weld aluminum as you have done. Are you using gas or electric, MIG or TIG? By the way, after I saw your post, I p...
by koncretekid
Fri Feb 08, 2019 4:42 pm
Forum: Off topic
Topic: Swiss Motocross 1970 maybe Beat
Replies: 7
Views: 1061
Flag: Canada

Re: Swiss Motocross 1970 maybe Beat

Sorry, but I don't know where we were in Switzerland. We rode 10,000 miles that summer in 3 months. We started in England, went to the Isle of Mann races, then headed south thru France, Spain, Portugal, Italy, Morocco, Greece, Yugoslavia (where we had to stay in a campground waiting for new primary ...
by koncretekid
Fri Feb 08, 2019 4:27 pm
Forum: Off topic
Topic: Swiss Motocross 1970 maybe Beat
Replies: 7
Views: 1061
Flag: Canada

Re: Swiss Motocross 1970 maybe Beat

Sorry about the duplicates - - they are scanned images and don't have names, just numbers that I can't interpret without opening each one and naming it.
by koncretekid
Fri Feb 08, 2019 4:22 pm
Forum: Off topic
Topic: Swiss Motocross 1970 maybe Beat
Replies: 7
Views: 1061
Flag: Canada

Re: Swiss Motocross 1970 maybe Beat

More. How many can I add at once?