Search found 72 matches

by FranktheWelder
Sat May 23, 2020 1:39 am
Forum: Project bikes
Topic: 74 TR5 MX Project For Ken
Replies: 44
Views: 2892
Flag: United States of America

Re: 74 TR5 MX Project For Ken

That side panel came out nice!
by FranktheWelder
Sat May 09, 2020 12:44 am
Forum: Project bikes
Topic: 74 TR5 MX Project For Ken
Replies: 44
Views: 2892
Flag: United States of America

Re: 74 TR5 MX Project For Ken

Those came out nice!
by FranktheWelder
Fri May 01, 2020 1:38 am
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

I would try good emulsion shocks on a trials bike but we don't have to use them on MX bikes any more. :ban
by FranktheWelder
Thu Apr 30, 2020 11:04 pm
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

Thanks, I saw those a while back but had forgotten about them. They are more money than one pair of shocks but less than two! Between that and the fork you get a lot of tuning.
by FranktheWelder
Thu Apr 30, 2020 12:14 am
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

Mine is set up to use a pretty short shock. I was looking for a specific swing arm angle that was modest and then would be able to source longer shocks to change geometry. I should have brought this up before but what I did is "hack" work that should have never been done and my modifications shouldn...
by FranktheWelder
Wed Apr 29, 2020 11:43 pm
Forum: Tech
Topic: B25 piston
Replies: 15
Views: 729
Flag: United States of America

Re: B25 piston

Well this is all very interesting. I have the same piston you do with no forward mark at .020" oversize. My bore was fine and didn't get measured and ordered standard BSA rings not aware mine was not stock. I received my rings today but didn't compare or test fit to barrel yet.
by FranktheWelder
Wed Apr 29, 2020 10:02 am
Forum: Project bikes
Topic: 74 TR5 MX Project For Ken
Replies: 44
Views: 2892
Flag: United States of America

Re: 74 TR5 MX Project For Ken

Nice! That looks beefy!
by FranktheWelder
Sun Apr 26, 2020 11:57 pm
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

Sure, Are you building one?
by FranktheWelder
Sat Apr 25, 2020 10:11 pm
Forum: Project bikes
Topic: It's finished
Replies: 6
Views: 523
Flag: United States of America

Re: It's finished

It would be greatly appreciated if, at some point you could provide a side shot of the whole bike? I really love all the bright work with that color. Lovely!
by FranktheWelder
Sat Apr 25, 2020 10:00 pm
Forum: Off topic
Topic: Lockdown wish list
Replies: 20
Views: 968
Flag: United States of America

Re: Lockdown wish list

I am envious of your technical ability and will be lucky to make a spark at the right time if at all. :laugh .

I am looking for sheet metal machines now. I know of several in a basement in the village. :razz:
by FranktheWelder
Fri Apr 24, 2020 11:27 pm
Forum: Suppliers and New Products
Topic: bend pipes
Replies: 16
Views: 2923
Flag: United States of America

Re: bend pipes

Welding is a great skill and can make you very popular in paddock! Your bike is a work of art!
by FranktheWelder
Fri Apr 24, 2020 11:17 pm
Forum: Off topic
Topic: Lockdown wish list
Replies: 20
Views: 968
Flag: United States of America

Re: Lockdown wish list

I have been socking money away for crank bearings, .020" over stock rings, Inlet and exhaust valves/possibly a valve job, 18T crank gear, Regina chain, main shaft sleeve gear bearings, clutch friction discs/springs/cover and gaskets. I live in a rural area and am allowed to go to work, not with the ...
by FranktheWelder
Fri Apr 24, 2020 1:28 am
Forum: Tech
Topic: Leak back,
Replies: 20
Views: 1058
Flag: United States of America

Re: Leak back,

Johnq1 wrote:
Wed Apr 22, 2020 10:13 am
I would recommend zooming this picture to look at the jobs list on the blackboard, very special
The whole image is filled with amazing.

By the way, your bike is stunning!!
by FranktheWelder
Fri Apr 24, 2020 1:04 am
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

I made progress on the skid plate this week. I used 6061 around 5mm thick and torch annealed it at around 371C. and formed it to the basic profile by hand. I noticed the sump and motor mount is a little below the frame rails so I used the press to do some tight bends. Though the angle is steep I ke...
by FranktheWelder
Thu Apr 23, 2020 5:30 pm
Forum: Suppliers and New Products
Topic: bend pipes
Replies: 16
Views: 2923
Flag: United States of America

Re: bend pipes

Yes, normally I work with few amps, but I get high cords instead of flatter. I remember my teacher telling me more amps and faster, but for this I have to be more skillful.... :oops: I am sorry I didn't see your post. I weld bicycles also, sometimes very thin material. I weld very cold and do one p...
by FranktheWelder
Wed Apr 22, 2020 11:29 pm
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

It's coming along nicely. Did you make dedicated form tools for the tank sides? What is the aluminium grade? Thank you. Yes, I made a simple wood piece and use a hand held pneumatic rivet gun (similar to air hammer)to form the metal. When I sanded the tank I could see the grain of the wood! 3003 H1...
by FranktheWelder
Wed Apr 22, 2020 12:58 am
Forum: Project bikes
Topic: Converting a B50 to wet sump. (aka Boris Johnson)
Replies: 102
Views: 4854
Flag: United States of America

Re: Converting a B50 to wet sump.

Great thread.
by FranktheWelder
Sun Apr 19, 2020 10:57 pm
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

Thanks guys, I have been TIG welding almost daily for 45 years. I am starting to get the hang of it! :laugh :laugh . I got a few more things done today including finishing the seat and tank mounts. I used the TIG process with si-bronze, quick but not the same as bronze welded or fillet brazed as bic...
by FranktheWelder
Sat Apr 18, 2020 11:33 pm
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

...and steering stops and welding. Today I have endured as many "exotic scents" as I care to and am doing a mental list on what remains on the bike. 1)Skid plate and brackets. 2)mounts for electrical bits. 3/a) straighten and modify swinging arm 3/b) make new swinging arm. 4) seat mount After all th...
by FranktheWelder
Sat Apr 18, 2020 1:44 am
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

If Charlie likes it, I like it! The foam is a little fragile but carves really nicely! I filled the holes in the mud guards and took out most of the dents. Had I reversed the order I would have been more successful. I am sure I am going to ruin these when I start riding my practice routes. I may get...
by FranktheWelder
Thu Apr 16, 2020 11:56 pm
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

I'm in awe, still had to google "vynl shelf paper" though............ Thanks for the compliments. I am in awe of the knowledge and experience all of you have shared on this forum. If any of you gents need additional info, don't hesitate to ask. I saw a pre-65 class trials bike with such a surface. ...
by FranktheWelder
Wed Apr 15, 2020 12:01 am
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

I made the new cross member/head steady I mentioned earlier. I chose to use a thicker (.095") 1" diameter tube and add some slight bends to allow easy access to rocker cover nuts and ill finish it when the motor is buttoned up. https://live.staticflickr.com/65535/49770569348_422fac5fa2_c.jpg by barn...
by FranktheWelder
Tue Apr 14, 2020 1:53 am
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

koncretekid wrote:
Tue Apr 14, 2020 1:35 am
Thanks!
They are an unusual configuration. The bracket only holds the fulcrum and the chassis serves as the stop.
by FranktheWelder
Mon Apr 13, 2020 11:26 pm
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

I think they will be great for trials. they swing back with no trouble and if you are at a trials event and can't find a spare to buy/borrow you are at the wrong place. :laugh :laugh
by FranktheWelder
Mon Apr 13, 2020 1:46 am
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

:thumb :thumb lovely work :!: beat Thanks! It makes me very happy. Very nice work Frank! I must confess I'm a bit intrigued as to how the foot pegs work, how they fold? Also will the kickstarter foul the footpeg? That tank is sweet. When I made my alloy tank I was told to braze the filler neck in, ...
by FranktheWelder
Sun Apr 12, 2020 1:22 am
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

So last week we learned that the Betor forks I have were made in Mexico by Moto-Islo in the late 70's. they were originally produced for Cooper motorcycles and also sold to Rokon motorcycles which was manufactured in Keene New Hampshire, very close to my shop and made for MX/enduro so perfectly suit...
by FranktheWelder
Fri Apr 10, 2020 11:59 pm
Forum: Project bikes
Topic: Starfire 441
Replies: 89
Views: 12880
Flag: United States of America

Re: Starfire 441

I could see them before but not now. I use Flickr. ten years with no problems.
by FranktheWelder
Thu Apr 09, 2020 2:36 am
Forum: Project bikes
Topic: 74 TR5 MX Project For Ken
Replies: 44
Views: 2892
Flag: United States of America

Re: 74 TR5 MX Project For Ken

It may need all radius-ed corners when viewed from the side or bigger radius? those perfect corners on top are beautiful and would look good all around but add a whole new level of complexity.

Did the .DWG file open?
by FranktheWelder
Wed Apr 08, 2020 12:01 am
Forum: Project bikes
Topic: My 1971 B25 VT
Replies: 24
Views: 1899
Flag: United States of America

Re: My 1971 B25 VT

That bike is looking good man. I grew up in Granada hills and there were Lockheed people everywhere. I am curious about shock length and what current head angle is at stock shock position? thx,
by FranktheWelder
Sun Apr 05, 2020 10:49 pm
Forum: Project bikes
Topic: Starfire 441
Replies: 89
Views: 12880
Flag: United States of America

Re: Starfire 441

Really beautiful!
by FranktheWelder
Sat Apr 04, 2020 9:54 pm
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

You were correct about the crown, they appear to be the same. they are stamped Betor on the bottle, very close to the wiper. Thank you for the additional information regarding Bultaco. The story of señor Bulto is an inspiration.
by FranktheWelder
Sat Apr 04, 2020 10:42 am
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

on the fuel tank, I will add a vent and exit ports. I purchased a model 11 a few months ago and it came with this fork as a spare (it seems to be unused). I also received motor spares with two spare cases. One has no serial number and the other Sherpa S 200 serial. I searched for other images of the...
by FranktheWelder
Sat Apr 04, 2020 1:58 am
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

Here is the cap, welded with no finish work https://live.staticflickr.com/65535/49732346783_2d09a99897_c.jpg Moroso cap by barnstormerbikes , on Flickr https://live.staticflickr.com/65535/49733214587_0208547385_c.jpg Cap by barnstormerbikes , on Flickr The cap is thick enough for pressing/threading...
by FranktheWelder
Sat Apr 04, 2020 1:31 am
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

I have to make a gas tank for my TR25 land speed bike, if I ever get back there (Colorado) to do so. What thickness of aluminum did you use? And have you found a good source for filler caps? Tom Funny you should mention gauge., My suppler has always used Imperial decimal and I never learned gauge. ...
by FranktheWelder
Sat Apr 04, 2020 12:49 am
Forum: Tech
Topic: Frame Geometry
Replies: 10
Views: 1026
Flag: United States of America

Re: Frame Geometry

I can describe the drawing I sent to johnu. I took my B44 engine cases and located the bolt holes with a CNC mill. When gathering the points, I made the barrel mounting surface horizontal. I collected the three motor mount bolt positions and a very approximate envelope. I then created a new drawing ...
by FranktheWelder
Fri Apr 03, 2020 1:43 am
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

I haven't done much sheet metal work in my career but enough to know it's not super easy. I weld a lot of thin materials so it should be easy but it's not. The shape of the oil tank is fine and the (MY) directive is get this done and make refinements later. Here is how is looks in the frame initiall...
by FranktheWelder
Tue Mar 31, 2020 12:35 am
Forum: Project bikes
Topic: "Old Smokey" A 1970 B44
Replies: 30
Views: 2816
Flag: United States of America

Re: "Old Smokey" A 1970 B44

Angus, thank you for the kind words. I spent a few too many evenings looking up part numbers and wandered off-course a bit. Spring is just around the corner out here so I shifted my focus to a B25 trials bike which doesn’t need as much work and I can use on a regular basis. I’ll be back on this soon.
by FranktheWelder
Wed Mar 18, 2020 1:03 am
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

Hope you keep the ape hangers that are on the Starfire :ban If they weren't bent bicycle handlebars your suggestion might be a good one. :idea: Perhaps a coat rack or something? :laugh . It looks pretty large but will get smaller. https://live.staticflickr.com/65535/49671428097_d01ee9cd29_b.jpg Unt...
by FranktheWelder
Tue Mar 17, 2020 12:49 am
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

I like this project, right up my alley! Was it difficult to remove the head tube? No,it's easy. I think I posted an image of the frame in the saw. I beveled the tubes back quite a bit and have a torch that allows me to weld the main tubes to the head tube between the gussets. It's better to replace...
by FranktheWelder
Sat Mar 14, 2020 11:43 pm
Forum: Project bikes
Topic: B25 trials project.
Replies: 56
Views: 3254
Flag: United States of America

Re: B25 trials project.

https://live.staticflickr.com/65535/49659119573_accd19da19_b.jpg Untitled by barnstormerbikes , on Flickr I made a roller from a urethane bushing lined with white delrin. https://live.staticflickr.com/65535/49659940112_aa33d5dfc0_b.jpg Untitled by barnstormerbikes , on Flickr This is bottomed out. ...