Search found 950 matches

by koncretekid
Thu Apr 29, 2021 2:03 pm
Forum: Tech
Topic: B44 Victor clutch springs...
Replies: 2
Views: 173

Re: B44 Victor clutch springs...

I have some cups that are about 1.100" in length (more-or-less, as they are all a bit different) but British Cycle Supply could not find any in Nova Scotia to match. However, Mark Appleton did tell me he found some in his shop in Maine that are 1.05". As to improving the clutch, you can machine off ...
by koncretekid
Sat Mar 20, 2021 4:19 pm
Forum: Project bikes
Topic: 1968 B44 Victor Special re-commission
Replies: 30
Views: 2972

Re: 1968 B44 Victor Special re-commission

Nice project! I don't know my speedometer I.D. numbers, but I don't think the '68 Victor came with the 150 mph speedo. So mileage numbers will not be correct. Of course, the PO may have gotten a new speedometer from a later Victor or a Lightning, and he really hasn't put more than 23 miles on it sin...
by koncretekid
Sun Mar 07, 2021 2:09 pm
Forum: Tech
Topic: B50mx Second Start Up Running Better but??"s
Replies: 10
Views: 1536

Re: B50mx Second Start Up Running Better but??"s

Valve timing: take the plug out and the valve adjustment covers off. At top dead center on the exhaust stroke, both valves should be open about .150" (by memory). By rocking it forward the exhaust valve should close (not completely but within .040" depending on your cam) about 35 degrees after TDC a...
by koncretekid
Tue Mar 02, 2021 12:47 pm
Forum: Project bikes
Topic: LOBE 2 20-21
Replies: 210
Views: 34780

Re: LOBE 2 20-21

I used a lot of wood braces when building my land speed bike. It's easy to cut, drill, and attach and is plenty rigid for holding tubing in place for welding.

Image

Tom
by koncretekid
Sun Feb 21, 2021 12:41 pm
Forum: Project bikes
Topic: 74 TR5 MX Project For Ken - Finished
Replies: 131
Views: 27094

Re: 74 TR5 MX Project For Ken - Finished

Another view of brake cable linkage:
brake cable
brake cable
Tom
by koncretekid
Sun Feb 21, 2021 12:36 pm
Forum: Project bikes
Topic: 74 TR5 MX Project For Ken - Finished
Replies: 131
Views: 27094

Re: 74 TR5 MX Project For Ken - Finished

I road raced a H*nda 350, then a B50. First "bus stop" turn I jammed on the rear brake to shift and went down like a ton of bricks! You can convert to left foot shifting by running a shift shaft thru the hollow swing arm and making linkage. The harder part is converting to cable rear brake, as seen ...
by koncretekid
Thu Feb 11, 2021 4:03 pm
Forum: Project bikes
Topic: LOBE 2 20-21
Replies: 210
Views: 34780

Re: LOBE 2 20-21

You're building a Chopper?

Is it just me, or does it look high in the front end? Or maybe it's just because I am inseam challenged?

Tom
by koncretekid
Tue Feb 02, 2021 2:11 am
Forum: Project bikes
Topic: 1972 B50 SS Return to Flight .
Replies: 91
Views: 12704

Re: 1972 B50 SS Return to Flight .

For original paint color, Rickard Nebrer has posted it here. http://www.b50.org/phpBB2/viewtopic.php?t=4828 It is called hi-violet. As far as I know, it uses a white base which shows thru the violet. I don't have the paint codes and I did not have a good original to color match. The purple I used is...
by koncretekid
Sat Jan 30, 2021 1:22 am
Forum: Tech
Topic: B25 Negative crankshaft end float
Replies: 9
Views: 2180

Re: B25 Negative crankshaft end float

Before you machine anything, I would assemble the cases with the crankshaft and the case bolts tightened, and give each end of the crankshaft a good blow with a big hammer against a block of hardwood to make sure both bearings are seated both in the cases and against the crankshaft.
Tom
by koncretekid
Thu Jan 28, 2021 2:20 pm
Forum: Tech
Topic: Serious Wet Sumping After Engine Overhaul
Replies: 7
Views: 1743

Re: Serious Wet Sumping After Engine Overhaul

First, make sure you have the hoses hooked up properly, i.e. the inner one is the feed so it must be connected to the tank - - bottom of frame. The outer one is connected to the top of the frame, and the small spur is connected to the rocker box oiler. In most cases, the anti-wet sump ball and sprin...
by koncretekid
Mon Jan 25, 2021 9:06 pm
Forum: Project bikes
Topic: 1972 B50 SS Return to Flight .
Replies: 91
Views: 12704

Re: 1972 B50 SS Return to Flight .

First order of parts in - exciting :-) Now that I have hubs clear, and other painted bits - should I remove paint on all? Was thinking about polishing hubs vice paint, but even if so need to remove the paint with stripper - should I remove paint from tank and fenders or let the fellow I hire to pai...
by koncretekid
Sun Jan 24, 2021 1:37 pm
Forum: Tech
Topic: B50 engine fitted to B44 frame
Replies: 13
Views: 2397

Re: B50 engine fitted to B44 frame

Isn't the rear engine mounting hole a little further back on the B50 motor? So you would have to elongate that hole to fit the B25/B44 frame?
by koncretekid
Sat Jan 23, 2021 1:02 pm
Forum: Tech
Topic: B50 engine fitted to B44 frame
Replies: 13
Views: 2397

Re: B50 engine fitted to B44 frame

The TR25 motor is of course shorter in height than the B50 motor, but it looks like there would be more room to remove rocker box and head because there is no extra tube as found on the B50 frames. You will have to make your own head steady, but that shouldn't be a problem. Tr25 motor in B25 frame f...
by koncretekid
Sat Jan 23, 2021 12:59 pm
Forum: Tech
Topic: B50 engine fitted to B44 frame
Replies: 13
Views: 2397

Re: B50 engine fitted to B44 frame

Not B50, but TR25T motor into B25 frame (same as B44 frame). The TR25T motor has the same motor mounts as the B50. I first cut off the original rear motor mounts from the frame. Tr25 in B25 frame rear mounts.jpg I think I had to trim that left rear original mount to allow the new flange to clear and...
by koncretekid
Sat Dec 19, 2020 5:20 pm
Forum: News
Topic: Stan Millard
Replies: 20
Views: 6254

Re: Stan Millard

One of my mentors from my start in racing the B50's, but I never got the chance to meet him. Talked to him on the phone, traded parts and ideas. I'll never forget when I lunched the transmission out the bottom of my cases and he said "just weld it back together - - piece of cake." I sent him the cas...
by koncretekid
Tue Nov 24, 2020 1:02 pm
Forum: Project bikes
Topic: B40 Project
Replies: 8
Views: 2661

Re: B40 Project

You guys lost me on that. Do they serve Spotted Dick at the Spotted Cow?
by koncretekid
Tue Nov 24, 2020 12:53 pm
Forum: Tech
Topic: Primary Case Breather
Replies: 6
Views: 1873

Re: Primary Case Breather

I have found in the past that the oil tank vent which hangs down the front down tube often leaks after a spirited ride. I teed that tank vent into the main breather hose which is routed to the back of the frame. You don't have to put the gauze filter on the end of the hose, but it may drip. Here is ...
by koncretekid
Sat Nov 21, 2020 12:24 pm
Forum: Tech
Topic: clutch plates
Replies: 4
Views: 1917

Re: clutch plates

Friction plate first. And if you machine off the facing (friction material) and fit that plate in the bottom, steel surface against the basket, and your plates are worn down just a bit, you can actually fit an extra friction and an extra steel plate to make it a 6 plate (6 friction, 6 steel) clutch,...
by koncretekid
Sat Nov 14, 2020 8:00 pm
Forum: Tech
Topic: Fitting Allen screws to rocker box on B50.
Replies: 35
Views: 9031

Re: Fitting Allen screws to rocker box on B50.

You don't need to replace any of the studs to remove the rocker box on a B44. You just have to rotate the box up and over the studs. But on a B50, there is an additional frame brace that is close to the rocker box. I replaced all the studs and recessed them on my B50 tracker with Allen head bolts. Y...
by koncretekid
Thu Nov 12, 2020 1:44 pm
Forum: Tech
Topic: Clutch Pushrod???
Replies: 17
Views: 3281

Re: Clutch Pushrod???

A word of caution about the clutch pushrod and ball - - do not hold the clutch in while revving the motor for more than a few seconds. I have found doing dyno tuning that if you accelerate the motor up to maximum rpm, and pull in the clutch while the dyno wheel continues to spin the wheel and hence ...
by koncretekid
Mon Nov 09, 2020 1:03 pm
Forum: Tech
Topic: Clutch Pushrod???
Replies: 17
Views: 3281

Re: Clutch Pushrod???

"7/32 is very close to 5.5 mm- which is a standard, and possibly K*wasak* head stock race size" I believe that many of the older Japanese bikes, i.e. '60's and '70"s, used "inch" sized ball bearings (the balls, not the race sizes). All the H*nda ones I've ever measured were like .250" for example, n...
by koncretekid
Sun Nov 08, 2020 1:54 am
Forum: Tech
Topic: Clutch Pushrod???
Replies: 17
Views: 3281

Re: Clutch Pushrod???

7/32" ball bearings probably aren't that hard to find, but not in common hardware stores. I looked on eBay and found that some K*wasak* models used them for something or other. Got the part number off eBay and went to my local Kawi dealer who checked that number, went back to his storeroom and came ...
by koncretekid
Fri Oct 30, 2020 1:22 pm
Forum: Tech
Topic: Rebuild Compression
Replies: 26
Views: 4600

Re: Rebuild Compression

"Copper should be annealed at what we called dull or first red or cherry red This is not the bright pink cherry red but the dull almost maroon cherry red Which is why you do it in a dark place and stop when you can detect a red colour once the flame has been moved off the surface." Thanks for that B...
by koncretekid
Fri Oct 16, 2020 1:05 pm
Forum: Tech
Topic: B50 rear hub
Replies: 11
Views: 2176

Re: B50 rear hub

If the internal spacer is not original, it could have been made incorrectly. From memory, it looks like the reliefs on the ends aren't machined as deep as the bearings, which would prevent the offside one (which doesn't bear against anything) from seating deep enough. I don't have the exact size, bu...
by koncretekid
Fri Oct 16, 2020 12:50 pm
Forum: Tech
Topic: 1974 tr5mx Engine Mounting Bolts
Replies: 7
Views: 1555

Re: 1974 tr5mx Engine Mounting Bolts

This will work and make a few extra ones: https://www.amazon.com/Threaded-Rod-All ... 860&sr=8-2
Tom
by koncretekid
Mon Oct 05, 2020 1:24 pm
Forum: Tech
Topic: Fork Rebuild Questions
Replies: 8
Views: 1738

Re: Fork Rebuild Questions

Heat and impact wrench.... Bottom nuts are aluminum, so heating will tend to expand the nuts more than the stanchions. But heating to break the seal may help, but I would heat the entire end and plunge into a bucket of water for a few seconds, as the aluminum should contract at a faster rate than t...
by koncretekid
Wed Sep 30, 2020 6:04 pm
Forum: Tales Of Woe
Topic: TR5MX clutch/kickstart issue
Replies: 25
Views: 7011

Re: TR5MX clutch/kickstart issue

MM already mentioned this, but he asked if the nut was tight. I forgot to mention that if the nut comes loose, the gear rack cannot push the clutch release rod and you will get the exact same consequence - - the clutch will feel rock solid as it hits the nut before it contacts the rod. Also, quite s...
by koncretekid
Tue Sep 29, 2020 10:04 pm
Forum: Tales Of Woe
Topic: When you're at your Wits End ..it could be worse
Replies: 5
Views: 2045

Re: When you're at your Wits End ..it could be worse

It Could Have Been Worse - - it could have then caught on fire and you and your bud would have been toasting roasted nuts with your bitters!
by koncretekid
Mon Sep 28, 2020 1:52 pm
Forum: Tales Of Woe
Topic: TR5MX clutch/kickstart issue
Replies: 25
Views: 7011

Re: TR5MX clutch/kickstart issue

The pinion gear on the end of the mainshaft is a 2-gear affair where the outer gear under the nut is fixed and the inner gears spins freely on a steel sleeve with a light spring that keeps it engaged to the outer gear. The teeth are designed to grab when the kickstart is actuated and release as the ...
by koncretekid
Sat Sep 26, 2020 1:16 am
Forum: Tech
Topic: GPS Speedometer
Replies: 11
Views: 3148

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: 2827

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: 2827

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: 2528

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 - Finished
Replies: 131
Views: 27094

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: 8448

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: 8448

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: 8448

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: 4378

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: 8448

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: 210
Views: 34780

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...