Search found 157 matches

by Michael Moore
Sat Mar 18, 2017 5:30 pm
Forum: Tech
Topic: B50 MX foot rest alternatives
Replies: 4
Views: 1721
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Re: B50 MX foot rest alternatives

http://b50.org/phpBB2/viewtopic.php?f=14&t=7545&p=70933&#p70943 Triumph TR5T (500 twin in unit single frame) footpegs are supposed to be pretty much a bolt on option. The stock peg position seems OK if you want to sit all the time but they were too far forward for me to comfortably stand on the pegs...
by Michael Moore
Wed Mar 15, 2017 12:47 am
Forum: Tech
Topic: drive sproket location
Replies: 3
Views: 1380
Flag: United States of America

Re: drive sproket location

The 27 degree steering head angle on the frame drawing doesn't necessarily follow through to the complete bike. When I measured my stock TR5MX with a digital protractor the actual steering head angle (relative to the ground) was in the 32 degree range. But that has a 21" front wheel instead of 20" a...
by Michael Moore
Tue Mar 14, 2017 5:56 pm
Forum: Tech
Topic: drive sproket location
Replies: 3
Views: 1380
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Re: drive sproket location

Jim, you should buy copies of the P92 blueprints from the members here who offer them on a CD, there is lots of interesting information in them. I attempted to replicate some of those in CAD and here are some dimensions from my drawing. Remember they are for the P92 and may or may not be the same as...
by Michael Moore
Tue Mar 14, 2017 4:02 am
Forum: Tech
Topic: valve timing agsin
Replies: 25
Views: 5793
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Re: valve timing agsin

hwan, the free Lotus 4T engine simulation software is supposed to be quite good. It only lets you model one cylinder, but who needs more than that? For 2T EngMod2T seems to get very good reviews from people who are 2T enthusiasts, and the same engineer has EngMod4T software too (though I've not hear...
by Michael Moore
Sat Mar 11, 2017 4:56 pm
Forum: Project bikes
Topic: Unit Single goodies from the Autojumble.
Replies: 9
Views: 4156
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Re: Unit Single goodies from the Autojumble.

I've also seen oiling holes for the pin drilled from the oil ring groove.

http://www.venolia.com/technical.html

I've also seen small diameter holes drilled through the rod from the big end bore to the little end.
by Michael Moore
Sat Mar 11, 2017 4:51 pm
Forum: Tech
Topic: valve timing agsin
Replies: 25
Views: 5793
Flag: United States of America

Re: valve timing agsin

Some alternator rotors have multiple timing marks on them for use on multiple bikes, and it isn't unknown for a timing mark to be incorrectly located so it is wise when building a new engine to check that the rotor marks are lining up when they are supposed to do so.
by Michael Moore
Thu Mar 09, 2017 10:47 pm
Forum: Tech
Topic: B44 Head Gasket Woes
Replies: 10
Views: 2420
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Re: B44 Head Gasket Woes

Sure, you can machine wood on a metal lathe, I've done it myself. But it seems like more of a chore to get it cleaned up than metal swarf is. Cast iron is pretty messy too.
by Michael Moore
Thu Mar 09, 2017 10:45 pm
Forum: Tech
Topic: electronic start
Replies: 17
Views: 3707
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Re: electronic start

There were things like that in the past, "Dyna" something or other I think. DC generator/starter combo? Maybe on Messerschmidt Kabinrollers or other bubble cars?
by Michael Moore
Thu Mar 09, 2017 4:30 am
Forum: Tech
Topic: B44 Head Gasket Woes
Replies: 10
Views: 2420
Flag: United States of America

Re: B44 Head Gasket Woes

Cleaning sawdust off of a well-lubricated lathe or mill can be such an annoying chore! What a local tuner used on cylinders was an aluminum disc (top-hat shaped so it could be pushed against the top of the cylinder to true it that was a close fit, with a lathe center hole installed. He tapped for a ...
by Michael Moore
Wed Mar 08, 2017 7:14 pm
Forum: Project bikes
Topic: B50SS it's here!
Replies: 10
Views: 5470
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Re: B50SS it's here!

Wow, that is REALLY clean! Good score!
by Michael Moore
Wed Mar 08, 2017 5:47 pm
Forum: Tech
Topic: Who made frames for B50s?
Replies: 13
Views: 4530
Flag: United States of America

Re: Who made frames for B50s?

Mark, even without the suit I can sometimes be hard to see from within the radiant glow of my glory. :smile: I'm an all the gear all the time motorcyclist too. I've gotten more protective/smarter about preventing getting hurt instead of recovering from getting hurt. Jeff and I have talked about buyi...
by Michael Moore
Wed Mar 08, 2017 12:36 am
Forum: Tech
Topic: Who made frames for B50s?
Replies: 13
Views: 4530
Flag: United States of America

Re: Who made frames for B50s?

Stan, I'm still thinking about it. Things seem to happen at a much slower speed now than it did when I was racing a lot. At the moment I'm trying to shed a lot of "not in this lifetime" project bikes (I've sold all my Motobi singles) including a Can Am/Armstrong/CCM 560 Sonic and a TR5MX. I was goin...
by Michael Moore
Tue Mar 07, 2017 11:35 pm
Forum: Project bikes
Topic: My new B50MX ...
Replies: 27
Views: 7917
Flag: United States of America

Re: My new B50MX ...

Tom, I don't have a photo of the DMS footpegs that came on my B50MX. They used the existing peg/engine (maybe center stand too) mounts to put the pegs roughly outside of the k/s spindle. The right peg used the mounting points below and to the front, and I the left used below and to the rear. I made ...
by Michael Moore
Tue Mar 07, 2017 11:17 pm
Forum: Tech
Topic: Who made frames for B50s?
Replies: 13
Views: 4530
Flag: United States of America

Re: Who made frames for B50s?

I had the ruler and note pad with me when I went to take photos of John Burkhard's DMS B50. The bsaotter website (lots of good frame stuff there) has a couple of photos of Scorpion (fabricated sheet steel frames) scramblers, including one with a C15: http://www.bsaotter.com/media/images/user-images/...
by Michael Moore
Tue Mar 07, 2017 6:19 pm
Forum: Tech
Topic: Who made frames for B50s?
Replies: 13
Views: 4530
Flag: United States of America

Re: Who made frames for B50s?

The photos that Mark posted here that I have saved are of an early B50-style frame (long spine tube ending under the seat) and what I presume is the next version with the spine ending at the front of the seat. Yes, what I'd like to see are frames that I've not seen before. I've got photos of most al...
by Michael Moore
Tue Mar 07, 2017 1:40 am
Forum: Tech
Topic: Who made frames for B50s?
Replies: 13
Views: 4530
Flag: United States of America

Re: Who made frames for B50s?

I've got the photos that Mark has posted. I see him as falling under the "CCM" category. What I hoping is to have someone come forward with a new B50 frame design that I've not seen before.
by Michael Moore
Tue Mar 07, 2017 12:46 am
Forum: Project bikes
Topic: My new B50MX ...
Replies: 27
Views: 7917
Flag: United States of America

Re: My new B50MX ...

Tom, I suspect that those giant mufflers with spark arrestors (IIRC) were put on because most of the bikes being sold were not being raced. The TR5MX I'm putting up for sale was converted to street trim (the purchaser wanted a B50SS but none were to be had) straight from the showroom floor and has z...
by Michael Moore
Mon Mar 06, 2017 7:01 pm
Forum: Tech
Topic: Who made frames for B50s?
Replies: 13
Views: 4530
Flag: United States of America

Who made frames for B50s?

I've been looking at my B50 stuff thinking that I really need to finally put it together, but while I've got most everything on hand there's no frame in my accumulation of parts. There are people on the forum who've deraked/lowered the engine/lengthened the swing arm on OEM frames. I've seen photos ...
by Michael Moore
Wed Apr 16, 2014 5:03 pm
Forum: Tech
Topic: Aluminum gas tank
Replies: 16
Views: 4033
Flag: United States of America

Re: Aluminum gas tank

I had a Henrob that I sold to a pal in Australia. I literally could not "come to grips" with the Henrob, it was just so awkward to hold and use. I've got a couple of the Meco torches now, one for clean acetylene and the other on the flux tank https://www.tinmantech.com/html/all_meco_related.php They...
by Michael Moore
Mon Apr 14, 2014 6:35 pm
Forum: Tech
Topic: Aluminum gas tank
Replies: 16
Views: 4033
Flag: United States of America

Re: Aluminum gas tank

In the USA the aluminum welding flux can be gotten from Kent White:

https://www.tinmantech.com/html/aluminu ... pplies.php

Kent's special welding lense makes gas welding aluminum easier as it filters out the flare from the flux.

cheers,
Michael
by Michael Moore
Sun Mar 30, 2014 3:34 am
Forum: Off topic
Topic: Bike Lift
Replies: 12
Views: 2603
Flag: United States of America

Re: Bike Lift

I've got a Western Handy Lift and like it a lot: http://www.handyindustries.com/images/products/STANDARD_LIFT/11-11_10741_BLACK_LIFT_AND_VISE____BIG_copy.jpg A friend had one of the inexpensive Chinese import lift tables but they aren't very stable. After his Commando tipped over sideways (still att...
by Michael Moore
Sun Mar 23, 2014 3:14 am
Forum: Tech
Topic: electronic ignition
Replies: 8
Views: 2037
Flag: United States of America

Re: electronic ignition

I ran the Rita on my B50MX for a bit with the ET stator and the starting capacitor and it ran fine, but it was a much easier starter after I put in the standard single-phase 120W stator and one of those little burglar alarm batteries so it wasn't dependent on me getting the thing spinning fast enoug...
by Michael Moore
Sat Mar 22, 2014 4:08 pm
Forum: Tech
Topic: electronic ignition
Replies: 8
Views: 2037
Flag: United States of America

Re: electronic ignition

A 3-phase Powerbase high output alternator is a big help for the British street bikes as it boosts the output a lot at low RPM. "While the 50% increase in full output (180 watts vs 120 watts) of the Powerbase alternator over previous Lucas alternators is significant, the greatest advantage of the 3-...
by Michael Moore
Thu Mar 20, 2014 9:34 pm
Forum: Books and other info
Topic: The Rupert Ratio Unit Single Manual Volume 2
Replies: 2
Views: 2750
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Re: The Rupert Ratio Unit Single Manual Volume 2

It is also on the USA Amazon for pre-order at $27.07

http://www.amazon.com/Rupert-Ratio-Unit ... PDKIKX0DER

cheers,
Michael
by Michael Moore
Fri Mar 14, 2014 4:34 pm
Forum: Tech
Topic: Phil Irvings' "Tuning for Speed"
Replies: 13
Views: 2951
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Re: Phil Irvings' "Tuning for Speed"

I've got a hard-back copy of the book but I downloaded it anyway, for "just in case". Sometimes my books don't get put away where I expect to find them . . .

cheers,
Michael
by Michael Moore
Fri Mar 14, 2014 4:32 pm
Forum: Tech
Topic: Carb slide wear
Replies: 7
Views: 1680
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Re: Carb slide wear

The body may well be worn too, so be sure to check that when you get the new slide. There's a shop in Arizona that fits hard-chromed brass Mikuni slides to the Amal bodies, I think with a very small amount of boring of the body which cleans up any wear on it.

cheers,
Michael
by Michael Moore
Thu Mar 13, 2014 3:47 am
Forum: Parts & Bikes wanted
Topic: Stainless Oil Lines and Fittings
Replies: 9
Views: 2468
Flag: United States of America

Re: Stainless Oil Lines and Fittings

-3 seems very small for an oil fitting. I think most oil lines tend to be -6 at the minimum.

http://www.russellperformance.com/

http://www.earlsindy.com/home/

http://www.goodridge.net/

are the usual suspects for high-performance plumbing needs.

cheers,
Michael
by Michael Moore
Tue Mar 11, 2014 4:28 pm
Forum: Tech
Topic: Track Craft B50
Replies: 1
Views: 784
Flag: United States of America

Track Craft B50

http://www.eurospares.com/graphics/BSAunitsingle/VMX5_1999_TrackCraftRickmanB50.pdf A short (688k file) article on a "market evaluation" B50 racer built by the Rickmans for BSA from VMX #5 (1999). The laid-down rear dampers and front disc are said to date from 1973. This back issue is not available ...
by Michael Moore
Mon Mar 10, 2014 4:36 pm
Forum: Tech
Topic: Phil Irvings' "Tuning for Speed"
Replies: 13
Views: 2951
Flag: United States of America

Phil Irvings' "Tuning for Speed"

You can download a copy of it here

http://www.stevenson-engineers.co.uk/fi ... Irving.pdf

cheers,
Michael
by Michael Moore
Mon Mar 10, 2014 6:39 am
Forum: Project bikes
Topic: B25 in a 72-74 Husqvarna frame
Replies: 7
Views: 2360
Flag: United States of America

Re: B25 in a 72-74 Husqvarna frame

Issue 21 (which is in the file name - VMX21) which was in 2003. The magazine is printed quarterly and they don't identify the issues beyond the issue number and year.

cheers,
Michael
by Michael Moore
Sun Mar 09, 2014 7:05 pm
Forum: Tech
Topic: small Rickman rear hubs
Replies: 2
Views: 978
Flag: United States of America

Re: small Rickman rear hubs

I did buy a KTM rear hub off of eBay since Mike Johnstone recommended them but it turned out to have a lot of cracks, and I'm generally not too keen on decades-old magnesium parts anyway. I've got a couple of the Rickman hubs in my storage space which means they weren't falling readily to hand and f...
by Michael Moore
Sun Mar 09, 2014 5:23 pm
Forum: Tech
Topic: small Rickman rear hubs
Replies: 2
Views: 978
Flag: United States of America

small Rickman rear hubs

Will the small (like Rickman Micro-Metisse) rear hub fit a standard B50MX swing arm without major re-engineering, and do they hold up OK in VMX? They look a bit narrow and I'm wondering if bent axles would be an issue.

thanks,
Michael
by Michael Moore
Sun Mar 09, 2014 5:09 pm
Forum: Project bikes
Topic: B25 in a 72-74 Husqvarna frame
Replies: 7
Views: 2360
Flag: United States of America

Re: B25 in a 72-74 Husqvarna frame

Here's the BSAng 250 article:

http://www.eurospares.com/graphics/BSAu ... Ang250.pdf

It is over the allowed file size I'm allowed to attach so a moderator will need to add a copy of it to the magazine section.

cheers,
Michael
by Michael Moore
Sun Mar 09, 2014 4:06 pm
Forum: Project bikes
Topic: B25 in a 72-74 Husqvarna frame
Replies: 7
Views: 2360
Flag: United States of America

Re: B25 in a 72-74 Husqvarna frame

I've seen photos of B50 engines in Maico frames, but when I bought a rolling chassis and took out the motor mounts I found that the B50 wasn't too eager to go in. The B25 engine would be easier. XL350s used to be a popular swap into Maicos after modifying the under-engine frame rails, but I think th...
by Michael Moore
Sat Mar 08, 2014 4:33 pm
Forum: Project bikes
Topic: B25 in a 72-74 Husqvarna frame
Replies: 7
Views: 2360
Flag: United States of America

Re: B25 in a 72-74 Husqvarna frame

VMX magazine had a reader's special article on a very tidy 250 in a mid-70s Bultaco Pursang chassis. I'll see about scanning that for the magazine files here. The 76 Husky frame was the basis for Aberg's HL500 Y*maha racer. From what I read the TT500 motor slots in pretty easily so a B50 might too. ...
by Michael Moore
Tue Mar 04, 2014 11:15 pm
Forum: Off topic
Topic: Rickman successes in SoCal
Replies: 5
Views: 2117
Flag: United States of America

Re: Rickman successes in SoCal

Hi Steve, I look in now and then but I haven't been doing anything BSAish for a bit so I haven't had anything to post about. But I'm in a bit of a manic (as opposed to depressive) part of my BSA unit single mental cycle at the moment so I've been thinking about the project bike. :smile: After I do s...
by Michael Moore
Tue Mar 04, 2014 10:23 pm
Forum: Off topic
Topic: Rickman successes in SoCal
Replies: 5
Views: 2117
Flag: United States of America

Re: Rickman successes in SoCal

Feel free to move it. I'll admit that I've always scrolled just far enough to show the first section, and wasn't aware of the magazine area.

:oops:

I'll have to go through those articles and see what I don't have or what I can add.

cheers,
Michael
by Michael Moore
Tue Mar 04, 2014 3:22 am
Forum: Off topic
Topic: Unit single humo(u)r
Replies: 3
Views: 1365
Flag: United States of America

Unit single humo(u)r

Unfortunately this seems to strike too close to home! This was in a recent Northern California BSAOC newsletter.

cheers,
Michael

Image
by Michael Moore
Tue Mar 04, 2014 3:20 am
Forum: Off topic
Topic: Rickman successes in SoCal
Replies: 5
Views: 2117
Flag: United States of America

Re: Rickman successes in SoCal

Here's a period ad touting Thorwaldson's success on the Metisse. Jim Wilson was a major SoCal expert who was sponsored by Nick Nicholson Motors, the US Greeves importer, on 250 and 380 Griffons. Steen's was the US Rickman importer. I find it interesting how even the people selling the product couldn...
by Michael Moore
Wed Feb 26, 2014 2:05 am
Forum: Off topic
Topic: Rickman successes in SoCal
Replies: 5
Views: 2117
Flag: United States of America

Rickman successes in SoCal

I've been reading through the online archives at cyclenews.com. I started with 1970 and I'm up to about September 1970 now. I've seen quite a few articles of wins in both desert and MX by Rickman BSA unit singles. Rich Thorwaldson (later sponsored by S*zuki) had a lot of those wins, but he was not t...