Search found 921 matches

by koncretekid
Sat Sep 26, 2020 1:16 am
Forum: Tech
Topic: GPS Speedometer
Replies: 11
Views: 927
Flag: Canada

Re: GPS Speedometer

. Hi Tom . Can you provide any further update on the performance of the GPS speedo? Thinking of getting one for my latest project but concerned about how easily the signal is picked up as the antennae is meant to have 'clear view of sky'. I cannot provide any update because I have never been able t...
by koncretekid
Tue Aug 18, 2020 1:57 pm
Forum: Tech
Topic: flywheel balancing
Replies: 15
Views: 560
Flag: Canada

Re: flywheel balancing

I think I've seen photos of balancing with the connecting rod in place. How about putting crankshaft with connecting rod attached in a lathe and lock the spindle of the lathe with the connecting rod at right angles to the crank (rod will be level thru the centerlines of the ends). Then weigh the sma...
by koncretekid
Sun Aug 16, 2020 2:09 pm
Forum: Tech
Topic: flywheel balancing
Replies: 15
Views: 560
Flag: Canada

Re: flywheel balancing

The B50 is much more difficult to balance because you first have to take off at least one crankpin nut and disassemble the crank, remove the rod and rod bearing, and weigh each end of the rod while it is level.You can do it with one very accurate scale and a support under the other end, and then do ...
by koncretekid
Thu Aug 13, 2020 12:12 pm
Forum: Tech
Topic: Gearbox vent 1971 B25T
Replies: 10
Views: 615
Flag: Canada

Re: Gearbox vent 1971 B25T

Clutch oil gets very black. Is it possible that the bushing in the sleeve gear is worn enough that clutch oil is contaminating the gearbox oil? This would be quite possible if neither of the primary cover access covers is vented and the timing access cover is well sealed on the non-primary vented co...
by koncretekid
Sat Aug 01, 2020 12:54 am
Forum: Project bikes
Topic: 74 TR5 MX Project For Ken
Replies: 88
Views: 7812
Flag: Canada

Re: 74 TR5 MX Project For Ken

One thing you need to be aware of is that Buchanans always include a slip of paper that seems to indicate "80 in-lbs" torque may be required for heavy bikes. I don't think that's necessary, but if you call them, they will tell you the correct torque for your application.
Tom
by koncretekid
Thu Jul 09, 2020 11:31 am
Forum: Tech
Topic: 441 Victor resurection
Replies: 45
Views: 3679
Flag: Canada

Re: 441 Victor resurection

The rotor loose on its hub is common. I just had to replace one yesterday. With all your bikes, I'll assume you have a front wheel chock. So put the front wheel in one and make sure it's stable and jack the rear wheel off the floor. Put the bike in 4th gear and take the spark plug out. Now rotate th...
by koncretekid
Wed Jul 08, 2020 12:04 pm
Forum: Tech
Topic: 441 Victor resurection
Replies: 45
Views: 3679
Flag: Canada

Re: 441 Victor resurection

The usual starting procedure is to flood the carb, turn the throttle stop in 1 turn (from previously set idle setting), and kick it with the throttle closed. Because you don't know the correct idle setting, start with the throttle fully closed and then open it just a hair (a Guitar E string should b...
by koncretekid
Mon Jul 06, 2020 12:34 pm
Forum: Tech
Topic: 441 Victor resurection
Replies: 45
Views: 3679
Flag: Canada

Re: 441 Victor resurection

"With everything together I can tickle the carb, then kick it through with the throttle wide open and the compression release compressed. On the 4th kick it will backfire" I'm not sure I'm interpreting your procedure correctly, but the compression release is to be used only to get the motor past top...
by koncretekid
Mon Jun 29, 2020 11:45 am
Forum: News
Topic: It's the big one
Replies: 12
Views: 1485
Flag: Canada

Re: It's the big one

"sexigenarian" definition - - an extremely sexy sexagenarian!
by koncretekid
Sat Jun 20, 2020 12:08 pm
Forum: Tech
Topic: 441 Victor resurection
Replies: 45
Views: 3679
Flag: Canada

Re: 441 Victor resurection

Sometimes the bolt that holds the ignition rotor on its taper is too long which allows the rotor to move. If you take the ignition stator off, try to move the rotor. If it moves, that's the problem.
Tom
by koncretekid
Tue Jun 16, 2020 11:20 am
Forum: Project bikes
Topic: LOBE 2 20-21
Replies: 39
Views: 3225
Flag: Canada

Re: LOBE 2 20-21

koncretekid the answer to you first question will be fixed, but not low, the answer to your second question is a little bit shorter than the length of string. Anita is the lady to speak to, I spoke to her yesterday on the same subject, but I am not in a hurry. dos it need it ?? See here . MM, I'n n...
by koncretekid
Mon Jun 15, 2020 10:44 pm
Forum: Project bikes
Topic: LOBE 2 20-21
Replies: 39
Views: 3225
Flag: Canada

Re: LOBE 2 20-21

What is the cost of Cook's conversion and when could he have it completed? I would have to know that to make that decision.
by koncretekid
Mon Jun 15, 2020 11:51 am
Forum: Project bikes
Topic: T 25 Project
Replies: 6
Views: 729
Flag: Canada

Re: T 25 Project

Isn't PE 1971? Of all the B50 parts I have, they are in Colorado and I can't get there now. I have a set of cases that need a weld repair where the sump passage to the oil pump has been punctured. I won't be there until this fall but I'll keep you in mind. Other than that, E & V Engineering will hav...
by koncretekid
Mon Jun 08, 2020 9:26 pm
Forum: Off topic
Topic: Lock down projects
Replies: 29
Views: 2557
Flag: Canada

Re: Lock down projects

The trail of my Bonneville bike (B50 now 600cc) is about 4-1/2" with a 30 degree rake angle.
by koncretekid
Mon Jun 08, 2020 2:33 am
Forum: Project bikes
Topic: LOBE 2 20-21
Replies: 39
Views: 3225
Flag: Canada

Re: LOBE 2 20-21

I thought 465cc because I thought you might use the B25 crankshaft (for high rpm) instead and run it in the 500cc class. Because you're starting with the B25/TR25 cases, you won't have the third main bearing unless you plant to weld onto the cases to carry the 3rd bearing. That long stroke crank sho...
by koncretekid
Mon Jun 08, 2020 2:24 am
Forum: Off topic
Topic: Lock down projects
Replies: 29
Views: 2557
Flag: Canada

Re: Lock down projects

Thanks for your explanation. I have considered putting a sidecar on the Bonneville land speed bike, but I don't think I'll go with "0" trail!
Tom
by koncretekid
Sun Jun 07, 2020 10:34 am
Forum: Off topic
Topic: Lock down projects
Replies: 29
Views: 2557
Flag: Canada

Re: Lock down projects

From Cycle World: "Trail (B) is measured in distance (inches or millimeters) between the point of the front wheel’s contact with the ground and a line drawn through the axis of the steering head. Under normal operation, this contact point is always some distance behind the projected line—somewhere b...
by koncretekid
Sat Jun 06, 2020 11:38 pm
Forum: Off topic
Topic: Lock down projects
Replies: 29
Views: 2557
Flag: Canada

Re: Lock down projects

Beat,
Does your new front suspension on your sidecar rig have negative trail? Looks like the front axle may be out in front of the steering axis, but I can't tell from the photo.
Tom
by koncretekid
Sat Jun 06, 2020 10:59 pm
Forum: Project bikes
Topic: LOBE 2 20-21
Replies: 39
Views: 3225
Flag: Canada

Re: LOBE 2 20-21

465cc ?
by koncretekid
Fri Jun 05, 2020 1:14 am
Forum: Tech
Topic: valve lifter wear
Replies: 6
Views: 855
Flag: Canada

Re: valve lifter wear

The indent on the exhaust rocker is quite common, as there is no return spring on the decompressor lever. If you look at the motor when it's running, you can see the lever bouncing back and forth because the cable doesn't retract fully on some and even leaving excess slack won't solve the problem. A...
by koncretekid
Wed Jun 03, 2020 11:25 am
Forum: Tech
Topic: GPS Speedometer
Replies: 11
Views: 927
Flag: Canada

Re: GPS Speedometer

Jack,
It's an actual needle, but of course, it only goes to 200 kph, or 120 mph.
Tom
by koncretekid
Sun May 31, 2020 2:42 pm
Forum: Tech
Topic: GPS Speedometer
Replies: 11
Views: 927
Flag: Canada

GPS Speedometer

Whoops, I meant "speedometer" and I can't edit the topic! (Edit by mm: Your wish is my command) On my recently completed B44 parts bike, I needed a speedometer. Besides the cost of a working Smith's speedo, there are the speedo gearbox and cable to worry about. I noticed a post on Britbike.com by M...
by koncretekid
Wed May 27, 2020 10:30 pm
Forum: Tech
Topic: High ratio B50 rocker arms
Replies: 17
Views: 1569
Flag: Canada

Re: High ratio B50 rocker arms

B50 revised head.jpg
B50 revised head
B50 revised head.jpg (24.29 KiB) Viewed 1185 times
B50 revised head.jpg
B50 revised head
B50 revised head.jpg (24.29 KiB) Viewed 1185 times
I think the included valve angle on the B50 is about 67 degrees, so better than earlier 90 degrees. Here's one you could copy:

Also, you do need to open up the intake a bit:
Tom's B50 head (Ed V.).jpg
My head by Ed V.
by koncretekid
Wed May 27, 2020 10:29 pm
Forum: Tech
Topic: High ratio B50 rocker arms
Replies: 17
Views: 1569
Flag: Canada

Re: High ratio B50 rocker arms

I think the included valve angle on the B50 is about 67 degrees, so better than earlier 90 degrees. Here's one you could copy:
by koncretekid
Tue May 26, 2020 12:20 pm
Forum: Tech
Topic: High ratio B50 rocker arms
Replies: 17
Views: 1569
Flag: Canada

Re: High ratio B50 rocker arms

Ed Valiket makes them. You will then want to sand them down and polish them. You also have to open up the pushrod tunnel, as the pushrods now move at more extreme angles where they intersect the shorter ends of the rocker arms.
B50 hr rocker arms.jpg
high ratio rocker arm
Tom

P.S. Has anyone heard from Stan lately?
by koncretekid
Tue May 26, 2020 12:01 pm
Forum: Tech
Topic: B44 / B50 kickstart quadrant
Replies: 10
Views: 1155
Flag: Canada

Re: B44 / B50 kickstart quadrant

Thanks, interesting info and history. So I suppose I’m back to my main query - can I fit a B50 kickstart quadrant into my B44 (which has a B44 mainshaft) and simply turn the ratchet mechanism the other way round? The B50 quadrant is longer so the recess in the inner timing cover is machined deeper ...
by koncretekid
Sun May 24, 2020 11:46 am
Forum: Tech
Topic: B44 / B50 kickstart quadrant
Replies: 10
Views: 1155
Flag: Canada

Re: B44 / B50 kickstart quadrant

B50 mainshaft has the shorter splines but cannot be used in B44 without also changing the inner timing cover, or possibly machining the inner cover to accommodate the B50 kick start quadrant which is longer. I was told by Ed V. that the B44 ones got chipped, as well as the B44 ratchet parts because ...
by koncretekid
Thu May 21, 2020 4:48 pm
Forum: Tech
Topic: Long Con rod, Short Piston
Replies: 19
Views: 1405
Flag: Canada

Re: Long Con rod, Short Piston

I'm running my 92mm bore x 90mm stroke @ 599cc in a 650cc class. Sure would be nice to get a 97mm stroke crank to get to 645cc. In 2018,I missed the SCTA speed record by .17 mph (149.99 mph on a 150.164 mph record). Last year the salt was soft, so I didn't make a full throttle run. This year, I can'...
by koncretekid
Mon May 18, 2020 9:53 pm
Forum: Tech
Topic: B25T Gearbox Clicking – What Sound is This?
Replies: 14
Views: 1351
Flag: Canada

Re: B25T Gearbox Clicking – What Sound is This?

If you need parts or help, Ed Valiket is only 2-1/2 hours from you in Howard City. See link at top of the page.
Tom
by koncretekid
Mon May 18, 2020 2:15 pm
Forum: Tech
Topic: B25T Gearbox Clicking – What Sound is This?
Replies: 14
Views: 1351
Flag: Canada

Re: B25T Gearbox Clicking – What Sound is This?

Layshaft pinion gear (the one that's always engaged with the sleeve gear) is the gear that wears the most. Ratio is 22/14, or 1.57. Sounds pretty close to 1.6.
Tom
by koncretekid
Fri May 08, 2020 11:33 am
Forum: Tech
Topic: Outer timing cover equivalences
Replies: 10
Views: 1256
Flag: Canada

Re: Outer timing cover equivalences

Outer timing cover should not be affected by the crank seal, to my knowledge. The later outer timing covers move the wiring for the points to a slot or a hole at the points cavity so the wires do not have to be trapped inside which is a lot handier when removing the timing cover.
Tom
by koncretekid
Thu Apr 30, 2020 11:22 am
Forum: Tech
Topic: B25 piston
Replies: 15
Views: 1646
Flag: Canada

Re: B25 piston

If your piston and bore are in good shape, and the clearance is OK, you could probably get away using +.020" rings on the +.010" piston, making sure the ring gap is sufficient. I did that on a race bike once (CB350 with K*wasak* pistons) and never had a problem.
Tom
by koncretekid
Tue Apr 28, 2020 8:45 pm
Forum: Tech
Topic: B44 gearbox in a B40FE
Replies: 6
Views: 1805
Flag: Canada

Re: B44 gearbox in a B40FE

Thanks for posting your pictures. Great looking project. I have a partially built B40 in Colorado (my second home) which had already been converted, but not yet tested. Hope to get back to it, some day!
B40 starting point (1).jpg
B40 Trials Bike starting point
Tom
by koncretekid
Sun Apr 26, 2020 8:56 pm
Forum: Project bikes
Topic: Ben's B50T trail bike
Replies: 38
Views: 9140
Flag: Canada

Re: bbenxe's B50T flat/street tracker

Lengthening the top-out spring should do the same thing as shortening the damper tube, except that shortening the damper tube does not change the length of the normal compression spring (it pulls the stancion down into the slider by the amount by which you have shortened it). You may still have to s...
by koncretekid
Sun Apr 26, 2020 12:53 pm
Forum: Project bikes
Topic: Ben's B50T trail bike
Replies: 38
Views: 9140
Flag: Canada

Re: bbenxe's B50T flat/street tracker

"At the moment I think pre-load is too high at 20mm, will decrease by shortening the spacers under the emulator, putting spacers under the top caps, cutting the springs, or a combination of all three. I also fitted footpegs that I recut the slots on to tilt them backwards and welded flicky footpegs ...
by koncretekid
Fri Apr 17, 2020 11:33 am
Forum: Project bikes
Topic: B25 trials project.
Replies: 60
Views: 5882
Flag: Canada

Re: B25 trials project.

Charlie & me - TR25 - 2.jpg
Charlie and me
I have one like that - - my dog seems to like it!
by koncretekid
Wed Apr 15, 2020 12:25 pm
Forum: Project bikes
Topic: B25 trials project.
Replies: 60
Views: 5882
Flag: Canada

Re: B25 trials project.

minetymenace wrote:
Wed Apr 15, 2020 8:21 am
FranktheWelder wrote:vynl shelf paper
Is that a thing for making seats?
It only works if you don't want to actually sit down!
by koncretekid
Tue Apr 14, 2020 1:35 am
Forum: Project bikes
Topic: B25 trials project.
Replies: 60
Views: 5882
Flag: Canada

Re: B25 trials project.

Thanks!
by koncretekid
Mon Apr 13, 2020 1:49 pm
Forum: Project bikes
Topic: B25 trials project.
Replies: 60
Views: 5882
Flag: Canada

Re: B25 trials project.

Stupid question, maybe, but isn't that foot peg bracket welded on upside down? Put the foot peg on so I can see how it works. I replaced the flange on the end of swinging arm spindle to offer more room and used that point to mount pegs. the part is made from 3mm sheet with 12mm flange. https://live....
by koncretekid
Fri Apr 10, 2020 11:14 pm
Forum: Project bikes
Topic: Converting a B50 to wet sump. (aka Boris Johnson)
Replies: 102
Views: 9306
Flag: Canada

Re: Converting a B50 to wet sump.

You will not be on your own, as we will be watching and will continue to comment. 92mm x 90mm = 599cc per my calculations.
Tom