Search found 43 matches

by FranktheWelder
Sun Apr 05, 2020 10:49 pm
Forum: Project bikes
Topic: Starfire 441
Replies: 77
Views: 10141
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: 19
Views: 733
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: 19
Views: 733
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: 19
Views: 733
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: 19
Views: 733
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: 294
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: 19
Views: 733
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: 1876
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: 19
Views: 733
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: 19
Views: 733
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: 19
Views: 733
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. ...
by FranktheWelder
Sat Mar 14, 2020 11:36 pm
Forum: Project bikes
Topic: B25 trials project.
Replies: 19
Views: 733
Flag: United States of America

Re: B25 trials project.

i started by eyeing up the swing arm angle and potential shock lengths. My new fork is 25mm longer than original and has the greatest offset of ones I have seen so I figured with the shortest aftermarket shock assembly (stock length), modest head angle, deepen swinging arm axle dropouts 1" I should ...
by FranktheWelder
Wed Mar 11, 2020 10:05 am
Forum: Project bikes
Topic: 74 TR5 MX Project For Ken
Replies: 16
Views: 690
Flag: United States of America

Re: 74 TR5 MX Project For Ken

Beautiful bike! Congrats! I am looking forward to seeing your progress.
by FranktheWelder
Sun Mar 08, 2020 11:27 pm
Forum: Project bikes
Topic: B44 on the cheap!
Replies: 34
Views: 2720
Flag: United States of America

Re: B44 on the cheap!

Looks great!
by FranktheWelder
Sun Mar 08, 2020 12:52 am
Forum: Project bikes
Topic: B25 trials project.
Replies: 19
Views: 733
Flag: United States of America

Re: B25 trials project.

Those bikes were shown on the Britbike forum and I pointed out that they both had 250 motors but the Victor gas tank was worth the price of both bikes - - good buy! I thought surely Peter Quick would snatch them up before anyone else would have a chance. The B44 looks to be early model frame, '66 o...
by FranktheWelder
Sat Mar 07, 2020 3:28 am
Forum: Project bikes
Topic: B25 trials project.
Replies: 19
Views: 733
Flag: United States of America

B25 trials project.

Reviewing the ads very early in the morning I spotted a familiar partially yellow alloy fuel tank and had a moment to slip away and make the call. The seller two hours away agreed that he wouldn't make another deal until after we had met. I borrowed a box van with no heat on a day that was well belo...
by FranktheWelder
Sat Mar 07, 2020 12:29 am
Forum: Tech
Topic: Odd clutch bearing arrangement.
Replies: 9
Views: 448
Flag: United States of America

Re: Odd clutch bearing arrangement.

tridentperu wrote:
Fri Mar 06, 2020 8:48 pm
Where had the PO rebuilt it? At the bottom of a pond???
The bike was parked on a yoga mat and I noticed a small sticker that appeared to read "organic mechanic" so I can only assume the case was filled with Hummus or refried beans. :laugh :laugh
by FranktheWelder
Thu Mar 05, 2020 10:38 am
Forum: Tech
Topic: Odd clutch bearing arrangement.
Replies: 9
Views: 448
Flag: United States of America

Re: Odd clutch bearing arrangement.

'nothing worse than an asymmetrical blodge.
by FranktheWelder
Wed Mar 04, 2020 2:25 am
Forum: Tech
Topic: Odd clutch bearing arrangement.
Replies: 9
Views: 448
Flag: United States of America

Odd clutch bearing arrangement.

I dismantled a 69 model B25 motor that had been rebuilt at some point and found an unusual bearing arrangement in the clutch. Five rollers had been removed and replaced with balls. My first guess is the technician (with some impulsive behavior) dropped a roller on the floor and found a bag of ball b...
by FranktheWelder
Sun Feb 02, 2020 1:26 am
Forum: Tech
Topic: B44 Shooting Star To MX
Replies: 5
Views: 1078
Flag: United States of America

Re: B44 Shooting Star To MX

mine is cases, gears and head only. I need 76 new parts in the engine. :lol: :lol:
by FranktheWelder
Sat Feb 01, 2020 11:43 pm
Forum: Project bikes
Topic: B44 on the cheap!
Replies: 34
Views: 2720
Flag: United States of America

Re: B44 on the cheap!

fender color looks pretty close to tank. It would be cool to find a rear fender to match. The alloy rims look great too.
by FranktheWelder
Sat Feb 01, 2020 11:26 pm
Forum: Suppliers and New Products
Topic: bend pipes
Replies: 4
Views: 1081
Flag: United States of America

Re: bend pipes

beat wrote:
Sat Feb 01, 2020 8:11 pm
Jack Gifford wrote:
Sat Feb 01, 2020 5:23 am
Nice work!
:thumb :thumb :thumb
Thanks, did another today, much nicer.

ImageUntitled by barnstormerbikes, on Flickr
by FranktheWelder
Sat Feb 01, 2020 1:10 pm
Forum: Project bikes
Topic: "Old Smokey" A 1970 B44
Replies: 30
Views: 1876
Flag: United States of America

Re: "Old Smokey" A 1970 B44

Barry Creary wrote:
Sat Feb 01, 2020 1:23 am
Very impressed <201
Thank you! I almost brought it home to show the wife.
by FranktheWelder
Sat Feb 01, 2020 12:53 pm
Forum: Suppliers and New Products
Topic: bend pipes
Replies: 4
Views: 1081
Flag: United States of America

Re: bend pipes

Jack Gifford wrote:
Sat Feb 01, 2020 5:23 am
Nice work!
Is the engine's displacement increased in the same proportion as the exhaust ID area? :lol:
Thanks but no, 1-7/16" is a weird size tube and not very available in job shop quantities so I went up to 1.5".
by FranktheWelder
Sat Feb 01, 2020 2:00 am
Forum: Suppliers and New Products
Topic: bend pipes
Replies: 4
Views: 1081
Flag: United States of America

bend pipes

If you live within a practical distance of southern Vermont and have a need, I invite you inquire about hand formed exhaust headers. I first learned this craft some years ago and really enjoyed a recent project on my own bike which came out pretty well. I can also do an exceptional job of "cut splic...
by FranktheWelder
Sat Feb 01, 2020 1:10 am
Forum: Project bikes
Topic: "Old Smokey" A 1970 B44
Replies: 30
Views: 1876
Flag: United States of America

Re: "Old Smokey" A 1970 B44

I have been a little obsessed about bending the exhaust. I had great results some years ago but when I tried a couple days ago I had some big failures. I had a couple pieces of material left and anticipating another failure chose one too short to complete the job. As is turned out I found the right ...
by FranktheWelder
Fri Jan 31, 2020 11:57 pm
Forum: Project bikes
Topic: B44 MX Motor
Replies: 48
Views: 12185
Flag: United States of America

Re: B44 MX Motor

That is good to hear. My frame is too rusty to use so ill make use of what can be discovered between now and when the new frame is constructed.
by FranktheWelder
Fri Jan 31, 2020 11:27 am
Forum: Project bikes
Topic: B44 MX Motor
Replies: 48
Views: 12185
Flag: United States of America

Re: B44 MX Motor

That frame is a beauty! :shock: Is the geometry stock? I was reading the AHRMA rulebook and they mention "frames of BSA design" being legal for the class which would allow a longer swinging arm.
by FranktheWelder
Sun Jan 26, 2020 1:40 am
Forum: Suppliers and New Products
Topic: Fork seal tool, inlet spacers and air filter housing.
Replies: 0
Views: 468
Flag: United States of America

Fork seal tool, inlet spacers and air filter housing.

I have a fabrication shop with tube bending, TIG welding and a simple CNC mill. We recently produced a few items for Peter Quick at BSA unit singles and they should be in his inventory very soon. Thanks for looking. Straight B50 manifold spacers and 1.5 degree B25 spacers. https://live.staticflickr....
by FranktheWelder
Sat Jan 18, 2020 11:35 am
Forum: Project bikes
Topic: "Old Smokey" A 1970 B44
Replies: 30
Views: 1876
Flag: United States of America

Re: "Old Smokey" A 1970 B44

I think I finished the work on the intake. I had a radius corner mill that worked perfect for the touching up the spring seat. <208 I was really worried about some type of catastrophic error at this point so I turned the tool holder by hand to take the final skim. https://live.staticflickr.com/65535...
by FranktheWelder
Sat Jan 18, 2020 12:37 am
Forum: Project bikes
Topic: It sparks
Replies: 206
Views: 54848
Flag: United States of America

Re: It sparks

It looks very beautiful compact and durable. Plastic cover with 0-ring?
by FranktheWelder
Thu Jan 16, 2020 1:46 am
Forum: Project bikes
Topic: "Old Smokey" A 1970 B44
Replies: 30
Views: 1876
Flag: United States of America

Re: "Old Smokey" A 1970 B44

I opened up the exhaust port to the old pipe diameter and ill go up one tube size for the exhaust. Never seen one but the 70 model year pipes are supposed to be larger, so 70 pipes may fit you modified head saving the need for custom pipes but then you look to be able to do that anyway ;) . I have ...
by FranktheWelder
Mon Jan 13, 2020 12:26 am
Forum: Project bikes
Topic: "Old Smokey" A 1970 B44
Replies: 30
Views: 1876
Flag: United States of America

Re: "Old Smokey" A 1970 B44

I also broke thru the valve spring seat and had to re-weld it. I have a neighbor in Colorado who is a professional welder who does my aluminum welding. I have a small TIG welder in Nova Scotia (Thermal Arc 95S I think) and learned how to weld 1" by .062" wall steel tubing, but cannot do aluminum. S...
by FranktheWelder
Sun Jan 12, 2020 2:21 pm
Forum: Project bikes
Topic: "Old Smokey" A 1970 B44
Replies: 30
Views: 1876
Flag: United States of America

Re: "Old Smokey" A 1970 B44

It looks like what you are about to do is what I did on my TR25 land speed motor. Only I cut off the original flange and re-welded it back on after the angled porting. I copied you and/or Ed V. I didn't make the port any bigger round though, I just angled it up and over a little bit. It's 30mm diam...
by FranktheWelder
Sun Jan 12, 2020 2:33 am
Forum: Project bikes
Topic: "Old Smokey" A 1970 B44
Replies: 30
Views: 1876
Flag: United States of America

Re: "Old Smokey" A 1970 B44

New vent <213 https://live.staticflickr.com/65535/49369939733_21fa2df314.jpg close up by barnstormerbikes , on Flickr The cable housing stop was rotten so I deleted that and tapped a couple holes for a bolt-on unit which will work with longer arms. I have sense removed the vent port. https://live.st...
by FranktheWelder
Sun Jan 12, 2020 2:25 am
Forum: Project bikes
Topic: "Old Smokey" A 1970 B44
Replies: 30
Views: 1876
Flag: United States of America

Re: "Old Smokey" A 1970 B44

Questionable to begin with and useless burned and rusted I tacked a piece of pipe on to avoid grinding a socket to fit the pressure relief valve with all this casting flash. https://live.staticflickr.com/65535/49149295186_153ecd1e2d_b.jpg Untitled by barnstormerbikes , on Flickr I faced it off. http...
by FranktheWelder
Sun Jan 12, 2020 1:58 am
Forum: Project bikes
Topic: "Old Smokey" A 1970 B44
Replies: 30
Views: 1876
Flag: United States of America

Re: "Old Smokey" A 1970 B44

The valves were corroded but I was happy to see the valve seats are still in good shape. https://live.staticflickr.com/65535/49035488711_bfce37f09d_b.jpg Untitled by barnstormerbikes , on Flickr https://live.staticflickr.com/65535/49034990423_e50cae361f_b.jpg Untitled by barnstormerbikes , on Flickr...
by FranktheWelder
Sat Jan 11, 2020 1:11 pm
Forum: Project bikes
Topic: "Old Smokey" A 1970 B44
Replies: 30
Views: 1876
Flag: United States of America

Re: "Old Smokey" A 1970 B44

The oil pump assembly was super tight and couldn't be turned by hand so I squared up the body, cleaned up the thrust washers and added X-type seals to the shafts (Thanks Kommando!) https://live.staticflickr.com/65535/49184503141_abccd47888_b.jpg Untitled by barnstormerbikes , on Flickr Using BSA doc...
by FranktheWelder
Sat Jan 11, 2020 1:15 am
Forum: Project bikes
Topic: "Old Smokey" A 1970 B44
Replies: 30
Views: 1876
Flag: United States of America

Re: "Old Smokey" A 1970 B44

I had the cases "vapor honed" which got the lichen and ash off the outside and crud from the inside. https://live.staticflickr.com/65535/49102427577_a4dabd3938_b.jpg Untitled by barnstormerbikes , on Flickr When dismantling and cleaning would become tiring I would try to make a step forward going do...
by FranktheWelder
Sat Jan 11, 2020 12:26 am
Forum: Project bikes
Topic: "Old Smokey" A 1970 B44
Replies: 30
Views: 1876
Flag: United States of America

Re: "Old Smokey" A 1970 B44

This is great! Puts my 'great fire of Beeza' from a few years ago to shame! Loving the melted fibreglass petrol tank and the fact you've rescued the horn! My bike only leaks from the primary case and that seems the only place yours is oil (or water) tight... Keep it coming... Cheers Ian b44icon IHO...